ENSCO INTERNATIONAL INC
10-Q, 1997-05-01
DRILLING OIL & GAS WELLS
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<PAGE>



                          SECURITIES AND EXCHANGE COMMISSION
                               Washington, D. C.  20549

                                       FORM 10-Q
                                       ---------

          (Mark One)

          [X]  Quarterly  report  pursuant to  Section 13  or 15(d)  of the
               Securities Exchange Act of 1934

                    FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1997
                    ---------------------------------------------

                                          OR


          [ ]  Transition report pursuant  to Section  13 or  15(d) of  the
               Securities Exchange Act of 1934

          For the transition period from _______________ to ______________ 


                                           

                            Commission File Number 1-8097

                           ENSCO INTERNATIONAL INCORPORATED
                (Exact name of registrant as specified in its charter)

                           DELAWARE                         76-0232579
              (State or other jurisdiction of            (I.R.S. Employer
               incorporation or organization)           Identification No.)

                                 
                     2700 Fountain Place            
                1445 Ross Avenue, Dallas Texas              75202 - 2792
           (Address of principal executive offices)          (Zip Code)

        Registrant's telephone number, including area code:  (214) 922-1500


        Indicate by check  mark whether  the registrant (1)  has filed  all
        reports  required  to  be  filed by  Section  13  or  15(d)  of the
        Securities Exchange Act of 1934 during  the preceding twelve months
        (or for such  shorter period  that the registrant  was required  to
        file  such  reports),  and (2)  has  been  subject  to such  filing
        requirements for the past 90 days.     YES  [ X ]     NO [   ]

        There  were 70,873,236 shares of  Common Stock, $.10  par value, of
        the registrant outstanding as of April 28, 1997.<PAGE>



                      ENSCO INTERNATIONAL INCORPORATED

                             INDEX TO FORM 10-Q

                    FOR THE QUARTER ENDED MARCH 31, 1997



                                                                PAGE  
                                                              --------
PART I - FINANCIAL INFORMATION

     ITEM 1.  FINANCIAL STATEMENTS

          Review Report of Independent Accountants                 3

          Consolidated Statement of Income
              Three Months Ended March 31, 1997 and 1996           4
     
          Consolidated Balance Sheet
              March 31, 1997 and December 31, 1996                 5

          Consolidated Statement of Cash Flows
              Three Months Ended March 31, 1997 and 1996           6

          Notes to Consolidated Financial Statements               7
               
     ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF
              FINANCIAL CONDITION AND RESULTS OF OPERATIONS       10


PART II - OTHER INFORMATION

     ITEM 6.   EXHIBITS AND REPORTS ON FORM 8-K                   18


SIGNATURES                                                        19<PAGE>



                       PART I - FINANCIAL INFORMATION

ITEM 1.     FINANCIAL STATEMENTS


                  REVIEW REPORT OF INDEPENDENT ACCOUNTANTS
                  ----------------------------------------

To the Board of Directors and Stockholders 
of ENSCO International Incorporated


We  have  reviewed the  accompanying  consolidated balance  sheet  of ENSCO
International  Incorporated   as  of  March   31,  1997  and   the  related
consolidated statements  of income  and of cash  flows for the  three month
periods  ended March 31, 1997 and 1996.   This financial information is the
responsibility of the Company's management.

We conducted our  review in  accordance with standards  established by  the
American  Institute of Certified Public  Accountants.  A  review of interim
financial  information   consists   principally  of   applying   analytical
procedures to financial  data and making  inquiries of persons  responsible
for  financial and accounting  matters.  It is  substantially less in scope
than an  audit  conducted in  accordance with  generally accepted  auditing
standards, the objective of which is the expression of an opinion regarding
the financial statements taken as a  whole.  Accordingly, we do not express
such an opinion.

Based on  our review, we are  not aware of any  material modifications that
should be  made to the accompanying  financial information for it  to be in
conformity with generally accepted accounting principles.

We previously  audited  in  accordance  with  generally  accepted  auditing
standards, the consolidated balance sheet as of December  31, 1996, and the
related consolidated statements  of income and  of cash flows for  the year
then ended (not presented herein), and in our report dated January 28, 1997
we  expressed  an  unqualified  opinion  on  those  consolidated  financial
statements.  In our opinion, the  information set forth in the accompanying
consolidated balance sheet information  as of December 31, 1996,  is fairly
stated in all  material respects  in relation to  the consolidated  balance
sheet from which it has been derived.



/s/ Price Waterhouse LLP
- -------------------------
Dallas, Texas
April 28, 1997<PAGE>


<TABLE>
             ENSCO INTERNATIONAL INCORPORATED AND SUBSIDIARIES
                      CONSOLIDATED STATEMENT OF INCOME
                   (In thousands, except per share data)
                                (Unaudited)

<CAPTION>
                                                 THREE MONTHS ENDED
                                                      MARCH 31,      
                                               ----------------------
                                                 1997          1996  
                                               --------      --------
<S>                                            <C>           <C>
OPERATING REVENUES...........................  $161,600      $ 84,546 

OPERATING EXPENSES
  Operating costs............................    70,111        43,524
  Depreciation and amortization..............    24,185        16,374
  General and administrative.................     3,082         2,215
                                               --------      --------
                                                 97,378        62,113

OPERATING INCOME.............................    64,222        22,433 

OTHER INCOME (EXPENSE)
  Interest income............................     1,414         1,236
  Interest expense...........................    (5,857)       (4,049)
  Other, net.................................        91           264 
                                               --------      --------
                                                 (4,352)       (2,549)

INCOME BEFORE INCOME TAXES AND MINORITY 
  INTEREST...................................    59,870        19,884 

PROVISION FOR INCOME TAXES
  Current income taxes.......................     9,191           367
  Deferred income taxes......................    13,474         4,400
                                               --------      --------
                                                 22,665         4,767 

MINORITY INTEREST............................       928           427
                                               --------      --------

NET INCOME ..................................  $ 36,277      $ 14,690 
                                               ========      ========

EARNINGS PER SHARE...........................  $    .51      $    .24
                                               ========      ========

WEIGHTED AVERAGE SHARES OUTSTANDING..........    70,864        60,651
                                               ========      ========
</TABLE>

The accompanying notes are an integral part of these financial statements.<PAGE>


<TABLE>
             ENSCO INTERNATIONAL INCORPORATED AND SUBSIDIARIES
                         CONSOLIDATED BALANCE SHEET
                  (In thousands, except for share amounts)
<CAPTION>
                                                   MARCH 31,   DECEMBER 31,
                                                     1997         1996    
                                                 ------------  -----------
                                                  (UNAUDITED)   
<S>                                               <C>          <C>
ASSETS
- ------
CURRENT ASSETS
  Cash and cash equivalents.....................  $   87,544   $   80,698
  Accounts and notes receivable, net............     124,113      111,033  
  Prepaid expenses and other....................      17,053       19,668
                                                  ----------   ----------
        Total current assets....................     228,710      211,399

PROPERTY AND EQUIPMENT, AT COST.................   1,280,123    1,248,873
  Less accumulated depreciation.................     280,394      257,284
                                                  ----------   ----------
        Property and equipment, net.............     999,729      991,589

OTHER ASSETS, NET...............................     111,341      112,432
                                                  ----------   ----------
                                                  $1,339,780   $1,315,420
                                                  ==========   ==========
LIABILITIES AND STOCKHOLDERS' EQUITY                                       
- ------------------------------------
CURRENT LIABILITIES                                 
  Accounts payable..............................  $   10,660   $   11,447 
  Accrued liabilities...........................      56,347       57,490
  Current maturities of long-term debt..........      35,314       34,943
                                                  ----------   ----------
        Total current liabilities...............     102,321      103,880

LONG-TERM DEBT..................................     235,590      258,635

DEFERRED INCOME TAXES...........................      86,437       72,963

OTHER LIABILITIES...............................      33,024       33,991

COMMITMENTS AND CONTINGENCIES...................   

STOCKHOLDERS' EQUITY
  Common stock, $.10 par value, 125.0 million 
    shares authorized and 77.2 million shares 
    issued......................................       7,725        7,718
  Additional paid-in capital....................     837,157      835,475
  Retained earnings.............................     108,079       71,802 
  Restricted stock (unearned compensation)......      (4,639)      (4,929)
  Cumulative translation adjustment.............      (1,086)      (1,086)
  Treasury stock at cost, 6.4 million and 6.3 
    million shares..............................     (64,828)     (63,029)
                                                  ----------   ----------<PAGE>



        Total stockholders' equity .............     882,408      845,951
                                                  ----------   ----------
                                                  $1,339,780   $1,315,420
                                                  ==========   ==========
</TABLE>
The accompanying notes are an integral part of these financial statements.<PAGE>


<TABLE>
             ENSCO INTERNATIONAL INCORPORATED AND SUBSIDIARIES
                    CONSOLIDATED STATEMENT OF CASH FLOWS
                               (In thousands)
                                (Unaudited)

<CAPTION>
                                                      THREE MONTHS ENDED
                                                           MARCH 31,     
                                                      -------------------
                                                        1997       1996  
                                                      --------   --------
<S>                                                   <C>        <C>
OPERATING ACTIVITIES
  Net income........................................  $ 36,277   $ 14,690 
  Adjustments to reconcile net income to net cash
    provided by operating activities:
      Depreciation and amortization.................    24,185     16,374 
      Deferred income tax provision.................    13,474      4,400  
      Amortization of other assets..................     1,388        752 
      Other.........................................       (37)      (262)
      Changes in operating assets and liabilities:
        Increase in accounts receivable.............   (13,087)    (4,275)
        (Increase) decrease in prepaid expenses 
          and other.................................       543       (642)
        Increase (decrease) in accounts payable.....      (787)     7,495
        Decrease in accrued liabilities.............    (1,978)    (1,491) 
                                                      --------   --------
          Net cash provided by operating activities.    59,978     37,041
                                                      --------   --------

INVESTING ACTIVITIES
  Additions to property and equipment...............   (31,718)   (38,878)
  Sale of short-term investments....................         -      5,000
  Other.............................................       366      2,128 
                                                      --------   --------
          Net cash used by investing activities.....   (31,352)   (31,750) 
                                                      --------   --------

FINANCING ACTIVITIES
  Reduction of long-term borrowings.................   (22,477)    (7,846)
  Reduction in restricted cash......................     1,075          -
  Other.............................................      (378)       645  
                                                      --------   --------
          Net cash used by financing activities.....   (21,780)    (7,201) 
                                                      --------   --------

INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS....     6,846     (1,910) 

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD......    80,698     77,064 
                                                      --------   --------
       
CASH AND CASH EQUIVALENTS, END OF PERIOD............  $ 87,544   $ 75,154
                                                      ========   ========
</TABLE>
 The accompanying notes are an integral part of these financial statements.<PAGE>


             ENSCO INTERNATIONAL INCORPORATED AND SUBSIDIARIES
                 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                (Unaudited)


Note 1 - Unaudited Financial Statements

The consolidated financial statements included herein have been prepared by
ENSCO International Incorporated  (the "Company"), without audit,  pursuant
to the rules and regulations of  the Securities and Exchange Commission and
in accordance  with generally  accepted accounting principles  and, in  the
opinion of  management, reflect  all adjustments  (which consist of  normal
recurring adjustments) which are  necessary for a fair presentation  of the
financial  position  and  results  of operations  for  the  interim periods
presented.

The financial data for the three month period ended March 31, 1997 included
herein has been subjected to a limited review by Price  Waterhouse LLP, the
registrant's independent accountants.   The accompanying  review report  of
independent accountants is not  a report within the  meaning of Sections  7
and  11 of  the Securities  Act of  1933 and  the independent  accountant's
liability under Section 11 does not extend to it.

Results  of operations for the three month  period ended March 31, 1997 are
not  necessarily indicative of results of operations which will be realized
for  the  year ending  December 31,  1997.   It  is recommended  that these
statements be read in conjunction with the Company's consolidated financial
statements and notes thereto for the year ended December  31, 1996 included
in the Company's Annual Report to the Securities and Exchange Commission on
Form 10-K.

Note 2 - Acquisition of DUAL DRILLING COMPANY

On  June 12,  1996, the  Company acquired  DUAL DRILLING  COMPANY ("Dual"),
pursuant  to an Agreement  and Plan of  Merger among the  Company, a wholly
owned subsidiary of the Company, and Dual.  The acquisition was approved on
that date by  Dual stockholders who received 0.625 shares  of the Company's
common  stock for  each share  of Dual  common stock.   The  Company issued
approximately  10.1 million shares of its common stock to Dual stockholders
in  connection with the acquisition,  resulting in an  acquisition price of
approximately $218.4 million. 

The  Company accounted  for the  acquisition of  Dual as  a purchase.   The
purchase price allocation has  been based on preliminary estimates  of fair
value  and  is  subject to  adjustment  as  additional information  becomes
available  and is evaluated.  The primary areas subject to further purchase
price adjustment are reserves associated with insurance related matters and
taxes.    The  excess  of  the purchase  price  over  net  assets  acquired
approximated $100 million and is being amortized over 40 years.

The acquired Dual  operations consisted of a fleet  of 20 offshore drilling
rigs, including 10  jackup rigs and 10  platform rigs.  Four of  the jackup
rigs are presently  located in the  Gulf of Mexico and  six are located  in
various  locations  throughout Southeast  Asia.   Of  the 10  platform rigs
operated by  Dual, seven are  currently located in  the Gulf of  Mexico and
one, which  is not owned  but managed, is  located off the coast  of China.<PAGE>


The remaining two platform rigs were retired in September 1996.

The following  unaudited  pro  forma  information  shows  the  consolidated
results of operations for the three months ended March 31,  1996 based upon
adjustments to the historical  financial statements of the Company  and the
historical financial statements of  Dual to give effect to  the acquisition
by  the Company  as if such  acquisition had  occurred January  1, 1996 (in
thousands, except per share data):

                                           1996  
                                         --------
     Operating revenues                  $114,007
     Operating income                    $ 24,975
     Net income                          $ 14,998

     Earnings per share                  $   0.21

The  pro  forma consolidated  results  of  operations are  not  necessarily
indicative  of  the  actual  results  that  would  have  occurred  had  the
acquisition occurred  on January 1, 1996,  or of results that  may occur in
the future.

Note 3 - Long-Term Debt

On February 27, 1997,  the Company amended and restated  its $150.0 million
revolving credit facility with  a group of international banks,  increasing
availability under the amended and  restated revolving credit facility (the
"Facility") to $200.0 million and reducing the interest rate margin and the
commitment  fee.  Availability under the  Facility will be reduced by $14.0
million on a semi-annual  basis beginning April  1998.  The final  maturity
date of the Facility remains October 2001 and the Facility  continues to be
collateralized by the majority of the Company's jackup rigs.  The covenants
under the  Facility are  similar to  the covenants  that existed  under the
original  revolving credit facility and  the interest rate  continues to be
tied  to   London  InterBank  offered  rates.     As  of  March  31,  1997,
approximately  $111.1  million  was  outstanding  and  $88.9  million   was
available for withdrawal under the Facility.  The weighted-average interest
rate on the Facility was 6.5% as of March 31, 1997.

Note 4 - Related Party Transaction

In January  1997, a director of the Company settled a $675,000 note payable
to the Company.   The note  payable related to  the director's purchase  of
168,750 shares of restricted common stock of the Company in 1988.  The note
was settled through the delivery to the Company of restricted shares of the
Company's  common  stock valued  at  a formula  price  provided for  in the
director's  1988 stock  purchase  agreement.   As  a result,  the  director
retained  132,998  net  shares of  common  stock  and  $238,000 cash  after
repayment of the note.

Note 5 - Amendment of Shareholder Rights Plan

On March 3,  1997, the Board of Directors of  ENSCO amended the Shareholder
Rights Plan  of the Company to  increase the purchase price  from $50.00 to
$250.00   for  each  one  one-hundredth  of  a  share  of  preferred  stock
purchasable upon the exercise of a Right, subject to adjustment.<PAGE>


Note 6 - Purchase of Additional Rig Interest

In April  1997, the Company agreed to acquire the remaining 51% interest in
a jointly owned premium jackup rig located in Southeast Asia.   The Company
previously  acquired  a  49%  interest  in  the rig  as  a  result  of  the
acquisition  of Dual.   The transaction is  expected to close  in May 1997,
subject to certain governmental approvals.

Note 7 - Earnings Per Share

In February 1997, the Financial Accounting Standards Board issued Statement
of Financial Accounting  Standards ("SFAS") No. 128, "Earnings  per Share,"
(the  "Statement")  which  establishes  new  standards  for  computing  and
presenting earnings per share.   The new Statement is  intended to simplify
the  standard for  computing  earnings  per  share  and  will  require  the
presentation of basic  and diluted earnings  per share on  the face of  the
income  statement, including all prior periods presented.  The Statement is
effective for financial statements issued for periods ending after December
15, 1997,  and earlier adoption is  not permitted.  For  the quarters ended
March  31, 1997  and  1996,  the  calculation  of  earnings  per  share  in
accordance with the provisions of SFAS No. 128 would have resulted in basic
earnings per share of $.52 and $.24  and diluted earnings per share of $.51
and $.24, for the respective periods.<PAGE>





ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS  OF FINANCIAL CONDITION  AND
          RESULTS OF OPERATIONS


This   report  contains   forward-looking  statements   based  on   current
expectations  that involve a number  of risks and  uncertainties that could
cause actual results to differ materially from the results discussed in the
forward-looking statements.   Generally, forward-looking statements include
words  or phrases such as "management anticipates", "the Company believes",
"the Company anticipates"  and words and  phrases of similar  impact.   The
forward-looking statements are  made pursuant to safe  harbor provisions of
the Private  Securities Litigation  Reform Act of  1995.  The  factors that
could  cause actual  results  to differ  materially  include, but  are  not
limited to:   (i)industry  conditions and  competition,  (ii) the  cyclical
nature  of the  industry,  (iii) worldwide  expenditures  for oil  and  gas
drilling, (iv)operational risks  and insurance, (v)  risks associated  with
operating in  foreign jurisdictions,  (vi) environmental  liabilities which
may arise  in the future which  are not covered by  insurance or indemnity,
(vii) the impact of current and future laws and governmental regulation, as
well  as repeal  or modification  of the  same, affecting  the oil  and gas
industry and the Company's  operations in particular, and (viii)  the risks
described from time to time in the Company's reports to  the Securities and
Exchange  Commission, including  the  Company's Annual Report  on Form 10-K
for the year ended December 31, 1996.  

Demand for  the Company's services  is significantly affected  by worldwide
expenditures for  oil  and gas  drilling.   Expenditures  for  oil and  gas
drilling  activity  fluctuate  based  upon  many  factors  including  world
economic  conditions, the  legislative environment  in the  U.S. and  other
major countries, production levels  and other activities of OPEC  and other
oil and gas  producers and the impact that  these and other events  have on
the current and expected future pricing of oil and natural gas.

BUSINESS ENVIRONMENT

ENSCO International  Incorporated  is  one  of  the  largest  providers  of
offshore drilling services  and marine transportation  services to the  oil
and gas industry.  The Company's operations are conducted in the geographic
cores of  North America,  Europe,  Asia Pacific  and  South America.    The
Company's  largest geographic  unit  is  North  America where  the  Company
operates primarily  in the Gulf  of Mexico.   The operations of  the Europe
Unit are  concentrated in the  North Sea  and the operations  of the  South
America Unit are conducted on Lake Maracaibo, Venezuela.

In  the first quarter  of 1997, strong  demand continued to  push day rates
upward  from levels at the latter part  of 1996.  With  nearly all actively
marketed rigs in the world under  contract and demand for high quality rigs
exceeding supply in major markets, the current outlook remains positive for
additional  increases  in  day rates  and  continued  high  demand for  the
remainder of 1997.<PAGE>



Offshore  rig and marine vessel  industry utilization for  the three months
ended March 31, 1997 and 1996 is summarized below:

            INDUSTRY WIDE AVERAGES *                    1997     1996    
            ------------------------                   ------   ------
            Offshore Rigs
                 U.S. Gulf of Mexico:
                      All Rigs:
                           Rigs Under Contract           165      149       
                           Total Rigs Available          183      178      
                           % Utilization                 90%      84%      

                      Jackup Rigs:
                           Rigs Under Contract           123      115      
                           Total Rigs Available          135      137      
                           % Utilization                 91%      84%      

                      Platform Rigs:
                           Rigs Under Contract            18       16      
                           Total Rigs Available           24       25      
                           % Utilization                 75%      64%      

                 Worldwide:
                      All Rigs:
                           Rigs Under Contract           585      551      
                           Total Rigs Available          636      641      
                           % Utilization                 92%      86%      

                      Jackup Rigs:
                           Rigs Under Contract           355      334      
                           Total Rigs Available          378      384      
                           % Utilization                 94%      87%      

                      Platform Rigs:
                           Rigs Under Contract           112      103      
                           Total Rigs Available          121      114      
                           % Utilization                 93%      90%      

            Marine Vessels  
                 U.S. Gulf of Mexico:
                      Vessels Under Contract             277      268      
                      Total Vessels Available            289      281
                      % Utilization                      96%      95%      


            *   Industry utilization based on data published by
                OFFSHORE DATA SERVICES, INC.<PAGE>


RESULTS OF OPERATIONS
- ---------------------
The following analysis  highlights the Company's operating results  for the
three months ended March 31, 1997 and 1996 (in thousands):

                                                      1997        1996  
         Operating Results                          --------    --------
         -----------------
             Revenues                               $161,600    $ 84,546
             Operating margin <F1>                    91,489      41,022   
             Operating income                         64,222      22,433
             Other expense                             4,352       2,549 
             Provision for income taxes               22,665       4,767 
             Minority interest                           928         427 
             Net income                               36,277      14,690 
     
         Revenues
         --------
             Contract drilling
               Jackup rigs:
                 North America                      $ 67,684    $ 36,053
                 Europe                               32,251      20,922
                 Asia Pacific <F2>                    12,863           -
                                                    --------    --------
                   Total jackup rigs                 112,798      56,975   
               Barge drilling rigs - South America    20,541      15,908
               Platform rigs <F2>                      7,411           -   
                                                    --------    --------
                   Total contract drilling           140,750      72,883

             Marine transportation
               AHTS <F3>                               4,695       3,778    
               Supply                                 13,569       6,595
               Mini-supply                             2,586       1,290
                                                    --------    --------
                 Total marine transportation          20,850      11,663

         Total                                      $161,600    $ 84,546
                                                    ========    ========
         Operating Margin <F1>
         ---------------------
             Contract drilling
               Jackup rigs:
                 North America                      $ 41,672    $ 16,154
                 Europe                               19,288       9,429
                 Asia Pacific <F2>                     2,424           -
                                                    --------    --------
                   Total jackup rigs                  63,384      25,583   
               Barge drilling rigs - South America    13,086       9,994
               Platform rigs <F2>                      2,343           -
                                                    --------    --------
                   Total offshore rigs                78,813      35,577
               Land rig <F4>                               -         (31)
                                                    --------    --------
                     Total contract drilling          78,813      35,546
                                                    --------    --------<PAGE>


                                                      1997        1996  
         Operating Margin <F1> (Cont.)              --------    --------
         -----------------------------
             Marine transportation
               AHTS <F3>                               2,812       2,177    
               Supply                                  8,453       2,901
               Mini-supply                             1,411         398
                                                    --------    --------
                     Total marine transportation      12,676       5,476
                                                    --------    --------

             Total                                  $ 91,489    $ 41,022
                                                    ========    ========

   <F1>  Defined  as   revenues  less  operating  expenses,   exclusive  of
         depreciation and general and administrative expenses.
   <F2>  The  Company did  not have an  Asia Pacific Unit  or platform rigs
         prior to the Dual acquisition.
   <F3>  Anchor handling tug supply vessels.
   <F4>  The Company sold its remaining land rig in July 1996.
<PAGE>



The  following is  an  analysis of  certain  operating information  of  the
Company for the three months ended March 31, 1997 and 1996:

                                                      1997        1996  
         Contract Drilling                          --------    --------
         -----------------
            Rig utilization:
               Jackup rigs:
                 North America                           93%         90%
                 Europe                                 100%         94%
                 Asia Pacific <F1>                       61%           -
                                                    --------    --------
                   Total jackup rigs                     88%         91%
               Barge drilling rigs - South America      100%         80%
               Platform rigs <F1>                        61%           -
                                                    --------    --------
                     Total                               87%         88%
                                                    ========    ========

            Average day rates:
               Jackup rigs:
                 North America                      $ 37,006    $ 23,385
                 Europe                               60,649      43,345
                 Asia Pacific <F1>                    32,624           -
                                                    --------    --------
                   Total jackup rigs                  41,084      27,959   
               Barge drilling rigs - South America    22,813      21,798
               Platform rigs <F1>                     17,909           -
                                                    --------    --------
                     Total                          $ 34,653    $ 26,266
                                                    ========    ========

         Marine Transportation 
         ---------------------
             Fleet utilization:
               AHTS <F2>                                 79%         88% 
               Supply                                    94%         89%  
               Mini-supply                               96%         66%
                                                    --------    --------
                 Total                                   92%         84%
                                                    ========    ========

             Average day rates:
               AHTS <F2>                            $ 10,992    $  7,828
               Supply                                  6,962       3,535
               Mini-supply                             3,726       2,678
                                                    --------    --------
                 Total                              $  6,791    $  4,120
                                                    ========    ========

   <F1>  The Company  did not have  an Asia  Pacific Unit or  platform rigs
         prior to the Dual acquisition.
   <F2>  Anchor handling tug supply vessels.
<PAGE>



The Company's consolidated revenues, operating margin and operating  income
for the three months ended March 31, 1997 increased significantly  from the
same period in 1996.   The increases were due  to higher average day  rates
and utilization for  the Company's  drilling rigs and  marine vessels  that
were  owned in both  the first  quarter of  1997 and 1996,  as well  as the
results  from  the drilling  rigs acquired  in the  Dual acquisition.   The
improved level of operating income in the first quarter of 1997 was reduced
by increased  depreciation and amortization expense resulting from the Dual
acquisition and  capital expenditures on the Company's fleet in 1996.<PAGE>


Contract Drilling
- -----------------
The following  is an analysis  of the Company's  offshore drilling rigs  at
March 31, 1997 and 1996:
                                                    1997        1996
                                                    ----        ----   
             Jackup rigs:
                 North America                       22          18
                 Europe                               6           6
                 Asia Pacific                         7 <F1>      -  
                                                    ----        ----
                     Total jackup rigs               35          24
             Barge drilling rigs - South America     10          10
             Platform rigs                            8 <F2>      -  
                                                    ----        ----
                     Total                           53          34  
                                                    ====        ====

         <F1>   Includes  one jackup  rig operated  by the Company  that is
                currently  49% owned.    The  Company anticipates  that the
                remaining  51% interest will  be acquired  in a transaction
                expected  to  close  in  May   1997  (see  Note  6  to  the
                Consolidated Financial Statements).
         <F2>   Seven are located in  the Gulf of Mexico  and one, which is
                not  owned but  operated  under  a management  contract, is
                located off the coast of China.

Revenues and operating margins for the  Company's contract drilling segment
for the three months  ended March 31, 1997 were  up $67.9 million, or  93%,
and  $43.3 million,  or  122%, respectively,  compared  to the  prior  year
period.   The  significantly improved  1997 results  were primarily  due to
increased day rates  and utilization for rigs owned by  the Company in both
the  current year and  prior year period  and to the  revenue and operating
margins generated from the rigs added in the Dual acquisition.  

For  the three months ended  March 31, 1997,  revenues and operating margin
from the Company's North America jackup rigs increased by $31.6 million, or
88%, and $25.5 million, or 158%,  respectively, compared to the same period
in 1996.   These improvements are  primarily due to an  increase in average
day rates of approximately $13,600 and an increase in  utilization over the
prior year period.  In addition,  the North America jackup rigs acquired in
the Dual acquisition contributed approximately $7.9 million in revenues and
$3.6 million in operating margin in the first quarter of 1997. 

Revenues  and  operating  margin  from the  Company's  Europe  jackup  rigs
increased   by  $11.3  million,  or   54%,  and  $9.9   million,  or  105%,
respectively, from the prior year period.  These improvements are primarily
due to  an  approximate $17,300,  or  40%, increase  in  day rates  and  an
increase  in utilization  over the prior  year period.   In  the prior year
period,  two   of  the  Company's   Europe  jackup  rigs   were  undergoing
modifications and enhancements for a part of the quarter.

The  Company  did  not  have  an  Asia  Pacific  Unit  prior  to  the  Dual
acquisition.  Subsequent to  the Dual acquisition, the Company  acquired an
additional  jackup rig  located  in Southeast  Asia  in November  1996  and
transferred another jackup rig from the  Gulf of Mexico to the Asia Pacific
Unit in the first  quarter of 1997.  Of  the seven jackup rigs in  the Asia<PAGE>



Pacific Unit, four were  in the shipyard for all or a  portion of the first
quarter  of 1997.   At  March 31,  1997, two  of the  rigs remained  in the
shipyard  and are projected  to return to  work during the  first to middle
part  of  May.   In  May  1997,  the  Company  anticipates  completing  the
acquisition of  the remaining 51%  interest in  a jointly owned  jackup rig
located  in  Southeast  Asia.   This  rig  will  undergo modifications  and
enhancements during  most of the second  and part of the  third quarters of
1997.   

Revenues  and  operating  margin from  the  Company's  South America  barge
drilling rigs increased by $4.6 million,  or 29%, and $3.1 million, or 31%,
respectively, from the prior year period.  These improvements are primarily
due  to an increase in utilization to 100%  in the current year period from
80% in the prior year period, and an approximate $1,000 increase in average
day  rates.     Two  of  the  barge  drilling  rigs  that  were  undergoing
modification  for the entire first quarter of  1996 returned to work in May
and June of 1996.

Marine Transportation
- ---------------------
The following is an analysis of the Company's marine transportation vessels
as of March 31, 1997 and 1996:

                                           1997       1996   
                                           ----       ----
             AHTS *                          6          6
             Supply                         23         23
             Mini-Supply                     8          8 
                                           ----       ----
                Total                       37         37  
                                           ====       ====

             *  Anchor handling tug supply vessels.

Revenues and  operating margins  for  the Company's  marine  transportation
segment for the three months ended March 31, 1997  were up $9.2 million, or
79%, and $7.2 million, or 131%,  respectively, from the prior year  period.
The 1997 results  improved significantly from the prior year  period due to
increased current  year activity levels in  the Gulf of Mexico  which was a
contributing  factor to higher average  day rates for  the Company's marine
transportation vessels as  compared to the prior year  period.  Average day
rates  for  the  Company's  marine  transportation  vessels  increased   by
approximately $2,700  from the prior year period  and utilization increased
to 92% in the current year period from 84% in the prior year period.  

Depreciation and Amortization
- -----------------------------
Depreciation  and amortization expense  increased by $7.8  million, or 48%,
for  the three months  ended March 31,  1997 as compared to  the prior year
period due primarily  to depreciation and amortization  from the additional
drilling  rigs  and  goodwill  associated with  the  Dual  acquisition, and
depreciation associated with  major modifications and  enhancements to  the
Company's fleet in 1996.<PAGE>


Other Income (Expense)
- ----------------------
Other income (expense) for the  three months ended March 31, 1997  and 1996
was as follows (in thousands):
                                               1997       1996  
                                             --------   --------
             Interest income                 $  1,414   $  1,236
             Interest expense                  (5,857)    (4,049) 
             Other, net                            91        264
                                             --------   --------
                                             $ (4,352)  $ (2,549)
                                             ========   ========
 
Interest  income increased due primarily to higher average cash balances in
the  current period.   Interest expense increased  as a result  of the debt
assumed in the Dual acquisition.

Provision for Income Taxes
- --------------------------
The Company's provision for income taxes increased by $17.9 million for the
three  months ended March  31, 1997 as  compared to the  prior year period.
The  increase  in   income  taxes  results  from  the  Company's  increased
profitability and the recognition of the remaining net operating losses for
financial reporting purposes.  


LIQUIDITY AND CAPITAL RESOURCES

Cash Flow and Capital Expenditures
- ----------------------------------
The  Company's cash flow from  operations and capital  expenditures for the
three months ended March 31, 1997 and 1996 are as follows (in thousands): 

                                               1997       1996   
                                             --------   --------
             Cash flow from operations       $ 59,978   $ 37,041      
                                             ========   ========
             Capital expenditures
                Sustaining                   $  7,666   $  2,551
                Enhancements                   24,052     23,056
                Acquisitions                        -     13,271
                                             --------   --------
                                             $ 31,718   $ 38,878
                                             ========   ========
 
Cash flow  from operations increased by $22.9  million for the three months
ended March 31, 1997 as compared to the prior year period.  The increase in
cash  flow from  operations is  primarily a  result of  increased operating
margins in the first three months of 1997 offset, in part, by a decrease in
cash flow from changes in various working capital accounts.  

Management anticipates that capital expenditures for the remainder of  1997
will be  approximately $185  million, including  $35  million for  existing
operations, $130  million for  modifications and  enhancements of  rigs and
vessels,  and  $20  million  for  acquisitions.    The  Company  may  spend
additional  funds to acquire  rigs or vessels in  1997, depending on market
conditions and opportunities.<PAGE>


Financing and Capital Resources
- -------------------------------
The Company's long-term debt,  total capital and debt to  capital ratios at
March 31, 1997  and December 31, 1996  are summarized below  (in thousands,
except percentages):

                                           March 31,     December 31,
                                             1997            1996     
                                         ------------    ------------
       Long-term debt                     $  235,590      $  258,635      
       Total capital                       1,117,998       1,104,586
       Long-term debt to total capital           21%             23%

The decrease in  long-term debt is a result of debt repayments in the first
quarter of  1997.  The total capital of the Company increased primarily due
to equity increases resulting from the profitability of the Company for the
three months ended March 31, 1997.

On February 27,  1997, the Company amended and  restated its $150.0 million
revolving  credit facility with a group  of international banks, increasing
availability  under the amended and restated revolving credit facility (the
"Facility") to $200.0 million and reducing the interest rate margin and the
commitment fee.  Availability under  the Facility will be reduced by  $14.0
million on a  semi-annual basis beginning  April 1998.  The  final maturity
date of the Facility remains October 2001 and the Facility  continues to be
collateralized by the majority of the Company's jackup rigs.  The covenants
under the  Facility are  similar to  the covenants  that existed  under the
original  revolving credit facility and  the interest rate  continues to be
tied   to  London  InterBank  offered  rates.     As  of  March  31,  1997,
approximately  $111.1  million  was  outstanding  and  $88.9  million   was
available for withdrawal under the Facility.  The weighted-average interest
rate on the Facility was 6.5% as of March 31, 1997.

The Company's liquidity position at March 31, 1997 and December 31, 1996 is
summarized in the table below (in thousands, except ratios):

                                             March 31,    December 31,
                                               1997          1996    
                                           ------------   ------------
          Cash and short-term investments    $ 87,544      $ 80,698
          Working capital                     126,389       107,519
          Current ratio                           2.2           2.0

The Company utilizes a  conservative investment philosophy with respect  to
its cash  and  cash equivalents  and  does  not invest  in  any  derivative
financial instruments.

Based  on current energy industry conditions, management believes cash flow
from  operations, the Company's existing  credit facility and the Company's
working capital should be sufficient to fund  the Company's short and long-
term liquidity needs.

Other Matters
- -------------
In February 1997, the Financial Accounting Standards Board issued Statement
of  Financial Accounting Standards ("SFAS") No.  128, "Earnings per Share,"
(the  "Statement")  which  establishes  new  standards  for  computing  and<PAGE>


presenting earnings per share.   The new Statement is intended to  simplify
the  standard for  computing  earnings  per  share  and  will  require  the
presentation  of basic and  diluted earnings per  share on the  face of the
income  statement, including all prior periods presented.  The Statement is
effective for financial statements issued for periods ending after December
15, 1997,  and earlier adoption is  not permitted.  For  the quarters ended
March  31,  1997  and  1996,  the  calculation  of  earnings per  share  in
accordance with the provisions of SFAS No. 128 would have resulted in basic
earnings per share of $.52 and $.24  and diluted earnings per share of $.51
and $.24, for the respective periods.<PAGE>



                           PART II - OTHER INFORMATION


     ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

            (a)  Exhibits Filed with this Report

                 EXHIBIT NO.
                 -----------

                    10.1    Amended and Restated Credit Agreement  dated as
                            of  February  27,  1997  by  and  among   ENSCO
                            International   Incorporated,  ENSCO  Delaware,
                            Inc.,  ENSCO  Offshore Company,  ENSCO Offshore
                            U.K.  Limited,  Dual  Holding  Company, as  the
                            borrowers,    and    Christiania     Bank    OG
                            Kreditkasse, New  York Branch,  and Den  Norske
                            Bank ASA,  New York Branch,  as Co-Agents,  and
                            Christiania  Bank  OG  Kreditkasse,  New   York
                            Branch,  as Admini-strative  Agent and Security
                            Trustee.

                    15.1    Letter  of  Independent  Accountants  regarding
                            Awareness of Incorporation by Reference.

                    27.1    Financial  Data  Schedule.   (Exhibit  27.1  is
                            being  submitted  as an  exhibit  only  in  the
                            electronic format of this  Quarterly Report  on
                            Form  10-Q  submitted  to  the  Securities  and
                            Exchange Commission.)
                 
                 
            (b)  Reports on Form 8-K

                 (i)    During the first quarter of 1997, the Company filed
                        a Current Report on  Form 8-K, dated March 3, 1997,
                        which reported  under Item 5, "Other  Events," that
                        the Company's Board  of Directors  had amended  the
                        Shareholder Rights Plan of the Company. <PAGE>



                                   SIGNATURES
                                   ----------


     Pursuant to the requirements  of the Securities Exchange Act  of 1934,
     the registrant  has duly caused this report to be signed on its behalf
     by the undersigned thereunto duly authorized.




                                        ENSCO INTERNATIONAL INCORPORATED



     Date:   April 29, 1997             /s/  C. Christopher Gaut          
           -------------------          ----------------------------------
                                        C. Christopher Gaut
                                        Chief Financial Officer


                                        /s/  H. E. Malone                 
                                        ----------------------------------
                                        H. E. Malone, Corporate Controller
                                        and Chief Accounting Officer<PAGE>

<TABLE> <S> <C>





<ARTICLE>   5<PAGE>





                                                            EXHIBIT NO. 27.1
                                                            ----------------

     <LEGEND>
     This schedule contains summary financial information extracted from the
     March 31, 1997 financial statements and is qualified in its entirety by
     reference to such financial statements.
     </LEGEND>
     
          
               <MULTIPLIER>                           1,000
               <PERIOD-TYPE>                          3-MOS
               <PERIOD-START>                         JAN-01-1997 
               <FISCAL-YEAR-END>                      DEC-31-1997
               <PERIOD-END>                           MAR-31-1997

               <CASH>                                 $   87,544
               <SECURITIES>                                    0
               <RECEIVABLES>                             126,235
               <ALLOWANCES>                                2,122
               <INVENTORY>                                 2,589
               <CURRENT-ASSETS>                          228,710
               <PP&E>                                  1,280,123
               <DEPRECIATION>                            280,394
               <TOTAL-ASSETS>                          1,339,780 
               <CURRENT-LIABILITIES>                     102,321
               <BONDS>                                   235,590
               <COMMON>                                    7,725
                                          0
                                                    0
               <OTHER-SE>                                874,683
               <TOTAL-LIABILITY-AND-EQUITY>            1,339,780
               <SALES>                                         0
               <TOTAL-REVENUES>                          161,600
               <CGS>                                           0
               <TOTAL-COSTS>                              70,111
               <OTHER-EXPENSES>                           27,267
               <LOSS-PROVISION>                                0
               <INTEREST-EXPENSE>                          5,857
               <INCOME-PRETAX>                            59,870
               <INCOME-TAX>                               22,665
               <INCOME-CONTINUING>                        36,277
               <DISCONTINUED>                                  0
               <EXTRAORDINARY>                                 0
               <CHANGES>                                       0
               <NET-INCOME>                               36,277
               <EPS-PRIMARY>                                0.51
               <EPS-DILUTED>                                0.51<PAGE>

</TABLE>

<PAGE>



                                                     EXHIBIT NO. 10.1
                                                     ********************
                                                     TO QUARTERLY REPORT
                                                     ON FORM 10-Q FOR THE
                                                     PERIOD ENDED 3/31/97
                                                     --------------------<PAGE>



==========================================================================


                  AMENDED AND RESTATED CREDIT AGREEMENT

                                  among

                    ENSCO INTERNATIONAL INCORPORATED,

                           ENSCO DELAWARE, INC.,

                          ENSCO OFFSHORE COMPANY,

                        ENSCO OFFSHORE U.K. LIMITED,

                            DUAL HOLDING COMPANY,

                        VARIOUS LENDING INSTITUTIONS,

                       CHRISTIANIA BANK OG KREDITKASSE,
                               NEW YORK BRANCH
                                     and
                    DEN NORSKE BANK ASA, NEW YORK BRANCH,
                                as Co-AGENTS

                                     and

                      CHRISTIANIA BANK OG KREDITKASSE,
                               NEW YORK BRANCH,

                           as ADMINISTRATIVE AGENT
                             and SECURITY TRUSTEE

                    ____________________________________

                       Dated as of December 15, 1993
             and Amended and Restated as of September 27, 1995
         and further Amended and Restated as of February 27, 1997
                    ____________________________________


==========================================================================<PAGE>




                            TABLE OF CONTENTS


                                                                     Page
                                                                     ----


SECTION 1.  Amount and Terms of Credit  . . . . . . . . . . . . .      1
     1.01   The Commitments . . . . . . . . . . . . . . . . . . .      1
     1.02   Minimum Borrowing Amounts, etc. . . . . . . . . . . .      3
     1.03   Notice of Borrowing . . . . . . . . . . . . . . . . .      3
     1.04   Disbursement of Funds . . . . . . . . . . . . . . . .      4
     1.05   Notes . . . . . . . . . . . . . . . . . . . . . . . .      5
     1.06   Conversions . . . . . . . . . . . . . . . . . . . . .      5
     1.07   Pro Rata Borrowings . . . . . . . . . . . . . . . . .      6
     1.08   Interest  . . . . . . . . . . . . . . . . . . . . . .      6
     1.09   Interest Periods  . . . . . . . . . . . . . . . . . .      7
     1.10   Increased Costs, Illegality, etc. . . . . . . . . . .      8
     1.11   Compensation  . . . . . . . . . . . . . . . . . . . .     11
     1.12   Change of Lending Office; Limitation on Indemnities .     11
     1.13   Replacement of Banks  . . . . . . . . . . . . . . . .     11

SECTION 2.  Letters of Credit . . . . . . . . . . . . . . . . . .     12
     2.01   Letters of Credit . . . . . . . . . . . . . . . . . .     12
     2.02   Letter of Credit Requests; Request for Issuance of  
              Letter of Credit  . . . . . . . . . . . . . . . . .     13
     2.03   Agreement to Repay Letter of Credit Payments  . . . .     14
     2.04   Letter of Credit Participations . . . . . . . . . . .     15
     2.05   Increased Costs . . . . . . . . . . . . . . . . . . .     17
     2.06   Indemnities . . . . . . . . . . . . . . . . . . . . .     18

SECTION 3.  Fees; Commitments . . . . . . . . . . . . . . . . . .     19
     3.01   Fees  . . . . . . . . . . . . . . . . . . . . . . . .     19
     3.02   Voluntary Reduction of Commitments  . . . . . . . . .     20
     3.03   Mandatory Adjustments of Commitments, etc.  . . . . .     21

SECTION 4.  Payments  . . . . . . . . . . . . . . . . . . . . . .     23
     4.01   Voluntary Prepayments . . . . . . . . . . . . . . . .     23
     4.02   Mandatory Prepayments . . . . . . . . . . . . . . . .     24
     4.03   Method and Place of Payment . . . . . . . . . . . . .     26
     4.04   Net Payments  . . . . . . . . . . . . . . . . . . . .     26

SECTION 5.  Conditions Precedent  . . . . . . . . . . . . . . . .     29
     5.01   Execution of Agreement  . . . . . . . . . . . . . . .     29
     5.02   No Default; Representations and Warranties  . . . . .     29
     5.03   No Default Under Existing Credit Agreement  . . . . .     29
     5.04   Opinions of Counsel . . . . . . . . . . . . . . . . .     29
     5.05   Secretary Certificate; Corporate Proceedings  . . . .     29
     5.06   Fees  . . . . . . . . . . . . . . . . . . . . . . . .     30
     5.07   Security Agreement  . . . . . . . . . . . . . . . . .     30
     5.08   Mortgages . . . . . . . . . . . . . . . . . . . . . .     31
     5.09   Evidence of Lien, etc.  . . . . . . . . . . . . . . .     31
     5.10   Insurance Report  . . . . . . . . . . . . . . . . . .     31
     5.11   Pledge Agreement  . . . . . . . . . . . . . . . . . .     31<PAGE>


     5.12   Subsidiary Guaranty . . . . . . . . . . . . . . . . .     32
     5.13   Existing Credit Agreement . . . . . . . . . . . . . .     32

SECTION 6.  Representations, Warranties and Agreements  . . . . .     32
     6.01   Corporate Status  . . . . . . . . . . . . . . . . . .     32
     6.02   Corporate Power and Authority . . . . . . . . . . . .     33
     6.03   No Violation  . . . . . . . . . . . . . . . . . . . .     33
     6.04   Litigation  . . . . . . . . . . . . . . . . . . . . .     33
     6.05   Use of Proceeds; Margin Regulations . . . . . . . . .     34
     6.06   Governmental Approvals  . . . . . . . . . . . . . . .     34
     6.07   Investment Company Act  . . . . . . . . . . . . . . .     34
     6.08   True and Complete Disclosure  . . . . . . . . . . . .     34
     6.09   Financial Condition; Financial Statements . . . . . .     34
     6.10   Tax Returns and Payments  . . . . . . . . . . . . . .     35
     6.11   Compliance with ERISA . . . . . . . . . . . . . . . .     35
     6.12   Subsidiaries  . . . . . . . . . . . . . . . . . . . .     35
     6.13   Patents, etc. . . . . . . . . . . . . . . . . . . . .     35
     6.14   Pollution and Other Regulations . . . . . . . . . . .     35
     6.15   Properties  . . . . . . . . . . . . . . . . . . . . .     36
     6.16   Citizenship . . . . . . . . . . . . . . . . . . . . .     36
     6.17   Rig Classification  . . . . . . . . . . . . . . . . .     36

SECTION 7.  Affirmative Covenants . . . . . . . . . . . . . . . .     37
     7.01   Information Covenants . . . . . . . . . . . . . . . .     37
     7.02   Books, Records and Inspections  . . . . . . . . . . .     39
     7.03   Insurance . . . . . . . . . . . . . . . . . . . . . .     39
     7.04   Payment of Taxes  . . . . . . . . . . . . . . . . . .     39
     7.05   Consolidated Corporate Franchises . . . . . . . . . .     40
     7.06   Compliance with Statutes, etc.  . . . . . . . . . . .     40
     7.07   Good Repair . . . . . . . . . . . . . . . . . . . . .     40
     7.08   End of Fiscal Years; Fiscal Quarters  . . . . . . . .     40
     7.09   Use of Proceeds . . . . . . . . . . . . . . . . . . .     40
     7.10   Earnings Concentration Account  . . . . . . . . . . .     40
     7.11   Additional Rig Valuations . . . . . . . . . . . . . .     41
     7.12   Further Assurances  . . . . . . . . . . . . . . . . .     41
     7.13   ERISA . . . . . . . . . . . . . . . . . . . . . . . .     41

SECTION 8.  Negative Covenants  . . . . . . . . . . . . . . . . .     42
     8.01   Changes in Business . . . . . . . . . . . . . . . . .     42
     8.02   Consolidation, Merger or Sale of Assets, etc. . . . .     42
     8.03   Liens on Assets . . . . . . . . . . . . . . . . . . .     43
     8.04   Indebtedness  . . . . . . . . . . . . . . . . . . . .     44
     8.05   Dividends; Restrictions on Subsidiaries, etc. . . . .     45
     8.06   Vessel Management; Registry . . . . . . . . . . . . .     46
     8.07   Interest Coverage Ratio . . . . . . . . . . . . . . .     46
     8.08   Working Capital . . . . . . . . . . . . . . . . . . .     47
     8.09   Leverage Ratio  . . . . . . . . . . . . . . . . . . .     47
     8.10   Collateral Maintenance  . . . . . . . . . . . . . . .     47

SECTION 9.  Events of Default . . . . . . . . . . . . . . . . . .     47
     9.01   Payments  . . . . . . . . . . . . . . . . . . . . . .     47
     9.02   Representations, etc. . . . . . . . . . . . . . . . .     47
     9.03   Covenants . . . . . . . . . . . . . . . . . . . . . .     47
     9.04   Default Under Other Agreements  . . . . . . . . . . .     47
     9.05   Bankruptcy, etc.  . . . . . . . . . . . . . . . . . .     48
     9.06   Security Documents  . . . . . . . . . . . . . . . . .     48
     9.07   Guaranty  . . . . . . . . . . . . . . . . . . . . . .     49<PAGE>


     9.08   Judgments . . . . . . . . . . . . . . . . . . . . . .     49
     9.09   Citizenship . . . . . . . . . . . . . . . . . . . . .     49
     9.10   Change of Control . . . . . . . . . . . . . . . . . .     49

SECTION 10. Definitions . . . . . . . . . . . . . . . . . . . . .     50

SECTION 11. The Administrative Agent and the Security Trustee . .     73
     11.01  Appointment of the Administrative Agent and the
              Security Trustee  . . . . . . . . . . . . . . . . .     73
     11.02  Nature of Duties  . . . . . . . . . . . . . . . . . .     74
     11.03  Lack of Reliance on the Administrative Agent  . . . .     74
     11.04  Certain Rights of the Administrative Agent  . . . . .     75
     11.05  Reliance  . . . . . . . . . . . . . . . . . . . . . .     75
     11.06  Indemnification . . . . . . . . . . . . . . . . . . .     75
     11.07  The Administrative Agent in Its Individual Capacity .     76
     11.08  Holders . . . . . . . . . . . . . . . . . . . . . . .     76
     11.09  Resignation by the Administrative Agent . . . . . . .     76

SECTION 12. Miscellaneous . . . . . . . . . . . . . . . . . . . .     77
     12.01  Payment of Expenses, etc. . . . . . . . . . . . . . .     77
     12.02  Right of Setoff . . . . . . . . . . . . . . . . . . .     78
     12.03  Notices . . . . . . . . . . . . . . . . . . . . . . .     78
     12.04  Benefit of Agreement  . . . . . . . . . . . . . . . .     79
     12.05  No Waiver; Remedies Cumulative  . . . . . . . . . . .     81
     12.06  Payments Pro Rata . . . . . . . . . . . . . . . . . .     81
     12.07  Calculations; Computations  . . . . . . . . . . . . .     82
     12.08  GOVERNING LAW; SUBMISSION TO JURISDICTION; VENUE; 
              WAVER OF JURY TRIAL . . . . . . . . . . . . . . . .     82
     12.09  Counterparts  . . . . . . . . . . . . . . . . . . . .     83
     12.10  Effectiveness . . . . . . . . . . . . . . . . . . . .     83
     12.11  Headings Descriptive  . . . . . . . . . . . . . . . .     84
     12.12  Amendment or Waiver . . . . . . . . . . . . . . . . .     84
     12.13  Survival  . . . . . . . . . . . . . . . . . . . . . .     85
     12.14  Domicile of Loans . . . . . . . . . . . . . . . . . .     85
     12.15  Confidentiality . . . . . . . . . . . . . . . . . . .     85
     12.16  Registry  . . . . . . . . . . . . . . . . . . . . . .     85
     12.17  Designated Senior Indebtedness  . . . . . . . . . . .     86

SECTION 13. Guaranty  . . . . . . . . . . . . . . . . . . . . . .     86
     13.01  The Guaranty  . . . . . . . . . . . . . . . . . . . .     86
     13.02  Bankruptcy  . . . . . . . . . . . . . . . . . . . . .     86
     13.03  Nature of Liability . . . . . . . . . . . . . . . . .     87
     13.04  Independent Obligation  . . . . . . . . . . . . . . .     87
     13.05  Waiver of Notice, etc.  . . . . . . . . . . . . . . .     87
     13.06  Authorization . . . . . . . . . . . . . . . . . . . .     88
     13.07  Reliance  . . . . . . . . . . . . . . . . . . . . . .     89
     13.08  Subordination . . . . . . . . . . . . . . . . . . . .     89
     13.09  Waiver  . . . . . . . . . . . . . . . . . . . . . . .     89
     13.10  Subrogation . . . . . . . . . . . . . . . . . . . . .     90

ANNEX I    --  Commitments
ANNEX II   --  Bank Addresses
ANNEX III  --  Existing Letters of Credit
ANNEX IV   --  Commitment Reduction Schedule
ANNEX V    --  Subsidiaries
ANNEX VI   --  Rigs and Vessels
ANNEX VII  --  Approved Brokers<PAGE>



EXHIBIT A      --    Form of Notice of Borrowing
EXHIBIT B-1    --    Form of Tranche A Note
EXHIBIT B-2    --    Form of Tranche B Note
EXHIBIT B-3    --    Form of Tranche C Note
EXHIBIT C      --    Form of Letter of Credit Request
EXHIBIT D      --    Form of Section 4.04(b)(ii) Certificate
EXHIBIT E-1    --    Form of Opinion of Robert O. Isaac, Esq.
EXHIBIT E-2    --    Form of Opinion of White & Case
EXHIBIT F      --    Form of Secretary's Certificate
EXHIBIT G-1    --    Form of Borrower A Security Agreement
EXHIBIT G-2    --    Form of Borrower B Security Agreement
EXHIBIT G-3    --    Form of Borrower C and Subsidiary Guarantor 
                       Security Agreement
EXHIBIT H-1    --    Form of US Fleet Mortgage 
EXHIBIT H-2    --    Form of Liberian Fleet Mortgage
EXHIBIT H-3    --    Form of Bahamian Mortgage
EXHIBIT I      --    Form of Aon Natural Resources Worldwide Opinion
EXHIBIT J      --    Form of Pledge Agreement
EXHIBIT K      --    Form of Subsidiary Guaranty
EXHIBIT L      --    Form of Compliance Certificate 
EXHIBIT M      --    Form of Assignment and Assumption Agreement<PAGE>



          AMENDED AND RESTATED CREDIT AGREEMENT, dated as of  December 15,
1993,  and Amended  and  Restated as  of  September 27,  1995  and further
Amended  and Restated as of  February 27, 1997,  among ENSCO INTERNATIONAL
INCORPORATED  ("Holdings"), a Delaware  corporation, ENSCO  DELAWARE, INC.
("Parent"), a Delaware corporation, ENSCO OFFSHORE COMPANY ("Borrower A"),
a Delaware  corporation, ENSCO  OFFSHORE  U.K. LIMITED  ("Borrower B"),  a
company formed under the laws of the United Kingdom, DUAL HOLDING  COMPANY
("Borrower  C" and,  together  with  Borrower A  and  Borrower B,  each  a
"Borrower" and collectively the "Borrowers"), a Delaware corporation,  the
lending institutions  listed from time to  time on Annex I  hereto (each a
"Bank" and,  collectively, the "Banks"), CHRISTIANIA  BANK OG KREDITKASSE,
NEW YORK BRANCH  and DEN NORSKE  BANK ASA, NEW  YORK BRANCH, as  co-agents
(the "Co-Agents") and CHRISTIANIA BANK OG KREDITKASSE, NEW YORK BRANCH, as
administrative agent  and security  trustee (the  "Administrative Agent").
Unless  otherwise defined  herein, all capitalized  terms used  herein and
defined in Section 10 are used herein as so defined.


                             W I T N E S S E T H :


          WHEREAS, Borrower A, Borrower  B, Borrower C, each of  the Banks
and the  Co-Agents are party to an  Amended and Restated Credit Agreement,
dated  as of September 27,  1995 (as amended,  modified or supplemented to
date, the "Existing Credit Agreement");

          WHEREAS, Holdings, Parent, each  of the Banks and  the Co-Agents
are party to  an Amended and Restated Guaranty, dated  as of September 27,
1995  (as  amended,  modified  or  supplemented  to  date,  the  "Existing
Guaranty"); and

          WHEREAS,  the  parties  hereto  wish to  amend  and  restate the
Existing Credit Agreement and  the Existing Guaranty in their  entirety as
follows;

          NOW, THEREFORE, IT IS AGREED:

          SECTION 1.  AMOUNT AND TERMS OF CREDIT.

          1.01  The Commitments.   (a)  Subject to and  upon the terms and
conditions herein  set forth, each Tranche A Bank severally agrees to make
a loan or loans (each a "Tranche A Loan" and, collectively, the "Tranche A
Loans") under the Tranche A Facility  to Borrower A, which Tranche A Loans
(i) shall be  made at  any time and  from time  to time on  and after  the
Restatement Effective Date and prior to the Maturity Date, (ii)  except as
hereinafter  provided, may, at the  option of Borrower  A, be incurred and
maintained as, and/or converted into, Base Rate Loans or Eurodollar Loans,
PROVIDED  that all  Tranche A  Loans made  as part  of the  same Borrowing
shall, unless otherwise specifically provided herein, consist of Tranche A
Loans of the same Type,  (iii) may be repaid and reborrowed  in accordance
with the provisions hereof, (iv) shall not exceed in the aggregate for all
Tranche A  Banks at any time  outstanding, the Total  Tranche A Commitment
and (v) shall not  exceed for any Tranche  A Bank at any  time outstanding
that aggregate principal  amount which, when  combined with the  aggregate
outstanding principal amount of all other Tranche A Loans of such Bank and
with such  Bank's Adjusted Tranche A Percentage of the Tranche A Letter of<PAGE>


Credit Outstandings (exclusive  of Unpaid Drawings  which are repaid  with
the proceeds of, and simultaneously with the incurrence of, the respective
Tranche A Loans) at such time, equals (1) if such Bank is a Non-Defaulting
Bank, the Adjusted Tranche A  Commitment of such Bank at such time and (2)
if such Bank is a Defaulting Bank,  the Tranche A Commitment of such  Bank
at such time.  

          (b)  Subject  to and  upon the  terms and conditions  herein set
forth, each Tranche B  Bank severally agrees to make a loan or loans (each
a "Tranche B  Loan" and,  collectively, the "Tranche  B Loans") under  the
Tranche  B Facility to Borrower B, which Tranche B Loans (i) shall be made
at any time and  from time to time on and  after the Restatement Effective
Date  and prior to the Maturity Date,  (ii) except as herein provided, and
subject  to  Section  1.01(d)  may,  at  the  option  of  Borrower  B,  be
denominated  in and maintained in,  either US Dollars  or Pounds Sterling,
(iii) if  US Dollar  Loans, except  as hereinafter  provided, may,  at the
option  of Borrower  B, be  incurred and  maintained as,  and/or converted
into, Base  Rate Loans or  Eurodollar Loans, PROVIDED  that all  Tranche B
Loans  made  as  part  of  the  same  Borrowing  shall,  unless  otherwise
specifically provided  herein, consist of Tranche B Loans of the same Type
and denomination, (iv)  if Pound  Sterling Loans, shall  be maintained  as
Eurodollar Loans, (v) may be repaid  and reborrowed in accordance with the
provisions hereof, (vi) shall not exceed in the  aggregate for all Tranche
B Banks  at any time outstanding, the Total Tranche B Commitment and (vii)
shall  not exceed  for any  Tranche B  Bank at  any time  outstanding that
aggregate  principal  amount  which,  when  combined  with  the  aggregate
outstanding principal  amount of all other  Tranche B Loans of  such Bank,
equals the Tranche B Commitment of such Bank at such time.

          (c)  Subject to  and upon  the terms and  conditions herein  set
forth, each Tranche C Bank severally agrees to make a  loan or loans (each
a "Tranche C Loan" and, collectively, the "Tranche C Loans", and, together
with  the Tranche  A Loans  and the  Tranche B  Loans, each  a "Loan"  and
collectively, the "Loans") under the Tranche C Facility (together with the
Tranche  A Facility  and  the Tranche  B  Facility, the  "Facilities")  to
Borrower C, which Tranche  C Loans (i) shall be made at  any time and from
time  to time on and after the Restatement Effective Date and prior to the
Maturity Date, (ii) except as hereinafter  provided, may, at the option of
Borrower C, be  incurred and  maintained as, and/or  converted into,  Base
Rate Loans or Eurodollar Loans, PROVIDED that all Tranche C  Loans made as
part of the  same Borrowing shall, unless  otherwise specifically provided
herein, consist of  Tranche C Loans of the same Type,  (iii) may be repaid
and  reborrowed in accordance with  the provisions hereof,  (iv) shall not
exceed in the  aggregate for all Tranche C Banks  at any time outstanding,
the Total  Tranche C Commitment and (v) shall not exceed for any Tranche C
Bank at any time  outstanding that aggregate principal amount  which, when
combined  with the  aggregate  outstanding principal  amount of  all other
Tranche  C Loans  of such  Bank and  with such  Bank's Adjusted  Tranche C
Percentage  of the Tranche C  Letter of Credit  Outstandings (exclusive of
Unpaid  Drawings which are repaid with the proceeds of, and simultaneously
with the  incurrence of, the  respective Tranche  C Loans)  at such  time,
equals  (1) if such Bank is a  Non-Defaulting Bank, the Adjusted Tranche C
Commitment of such Bank at  such time and (2) if such Bank is a Defaulting
Bank, the Tranche C Commitment of such Bank at such time.

          (d)  Whenever Borrower  B incurs a  Tranche B  Loan pursuant  to
Section 1.01(b) denominated in Pounds Sterling, the outstanding  principal<PAGE>


amount  of Tranche B  Loans (the  "Tranche B  Outstandings") at  such time
shall be affected by such Loan on the basis of the US Dollar Equivalent of
the  stated amount  of such  Loan.  Any  US Dollar  Equivalent established
according to the  preceding sentence shall remain in effect until the last
day of the Interest Period applicable to any such Loan, except that in the
case of an Interest  Period in excess  of six (6)  months, such US  Dollar
Equivalent shall remain in effect until the date occurring  six (6) months
after the  first day of such Interest Period, at  which time the Tranche B
Outstandings shall be adjusted to reflect the current US Dollar Equivalent
of the stated amount of any such Loan.

          1.02  Minimum  Borrowing Amounts, etc.   The aggregate principal
amount  of each  Borrowing shall not  be less  than the  Minimum Borrowing
Amount for  the Loans  constituting such  Borrowing.   More  than one  (1)
Borrowing may be incurred on any day, PROVIDED that at no time shall there
be outstanding more than ten (10) Borrowings of Eurodollar Loans.

          1.03  Notice of Borrowing.  Whenever a Borrower desires to incur
Loans  hereunder, it  shall give  the Administrative  Agent at  its Notice
Office,  prior to  3:00 p.m. (New York  time), at least  four (4) Business
Days' prior  written notice  (or telephonic notice  promptly confirmed  in
writing) of any Borrowing  to be made hereunder.  Each such notice (each a
"Notice of  Borrowing") shall  be in  the form of  Exhibit A and  shall be
irrevocable and shall specify (i) the name of such Borrower, (ii) the date
of  such Borrowing  (which shall  be a Business  Day), (iii)  whether such
Loans  shall consist  of Tranche  A Loans,  Tranche B  Loans or  Tranche C
Loans, and,  if Tranche B Loans, whether such Loans will be denominated in
US  Dollars or  (to  the  extent  permitted)  Pounds  Sterling,  (iv)  the
aggregate  principal amount  of  the Loans  to  be made  pursuant to  such
Borrowing  (stated in Pounds Sterling and the current US Dollar Equivalent
thereof in the case of  Pound Sterling Loans), (v) whether  the respective
Borrowing shall consist of  Base Rate Loans or  (to the extent  permitted)
Eurodollar  Loans  and, if  Eurodollar Loans,  the  Interest Period  to be
initially applicable  thereto and  (vi)  disbursement instructions.    The
Administrative Agent  shall promptly  give each  Bank  written notice  (or
telephonic notice promptly confirmed in  writing) of each proposed Borrow-
ing, of such Bank's proportionate share  thereof and of the other  matters
covered by the Notice of Borrowing.

          1.04  Disbursement of Funds.  (a)  No later than 11:00 A.M. (New
York time)  on the date specified  in each Notice of  Borrowing, each Bank
with a Commitment under the respective Tranche will make available its pro
rata share  of each Borrowing  requested to be  made on  such date in  the
manner provided  below.  All such  amounts shall be made  available to the
Administrative Agent in US Dollars in the case of a Borrowing of US Dollar
Loans or in Pounds  Sterling in the case of a  Borrowing of Pound Sterling
Loans and immediately available funds at  the US Payment Office for any US
Dollar Loan or at  the UK Payment Office  for any Pound Sterling Loan  and
the Administrative Agent  promptly will make  available to the  respective
Borrower by depositing to its account at the respective Payment Office (or
in accordance  with  any other  disbursement  instructions given  by  such
Borrower) the aggregate of the amounts so made available in  US Dollars or
Pounds  Sterling, as  the case  may be,  and immediately  available funds.
Unless the Administrative Agent shall have been notified by any Bank prior
to the date of Borrowing that such Bank does not intend to make  available
to the Administrative Agent its portion of the  Borrowing or Borrowings to
be made on such date,  the Administrative Agent may assume that  such Bank<PAGE>

has made such amount available to the Administrative Agent on such date of
Borrowing, and the Administrative Agent, in reliance upon such assumption,
may (in  its sole discretion  and without  any obligation to  do so)  make
available  to the  requesting Borrower  a corresponding  amount.   If such
corresponding amount is not  in fact made available to  the Administrative
Agent by such Bank and the Administrative Agent has made available same to
such  Borrower, the Administrative Agent shall be entitled to recover such
corresponding  amount from  such Bank.   If  such Bank  does not  pay such
corresponding  amount  forthwith upon  the  Administrative Agent's  demand
therefor, the Administrative Agent shall promptly (and in any event within
two (2)  Business Days from  the date  the Administrative Agent  made such
funds  available to such Borrower) notify such Borrower, and such Borrower
shall (within two  (2) Business Days  of receiving such  demand) pay  such
corresponding amount  to the  Administrative  Agent.   The  Administrative
Agent shall also be entitled  to recover on demand from such  Bank or such
Borrower, as  the case may  be, interest  on such corresponding  amount in
respect  of  each day  from the  date such  corresponding amount  was made
available by  the Administrative Agent  to such Borrower to  the date such
corresponding amount is recovered  by the Administrative Agent, at  a rate
per annum equal to  (x) if paid by such Bank,  the overnight Federal Funds
Effective Rate (calculated on the basis of the US Dollar Equivalent in the
case of Pound Sterling  Loans) or (y) if  paid by such Borrower, the  then
applicable rate of  interest, calculated in accordance  with Section 1.08,
for the respective Loans.

          (b)  Nothing herein shall be deemed to relieve any Bank from its
obligation to fulfill its commitments hereunder or to prejudice any rights
which any Borrower may have against any Bank as a result of any default by
such Bank hereunder.

          1.05  Notes.  (a)   Each  Borrower's   obligation  to   pay  the
principal  of, and  interest  on, the  Loans  made by  each  Bank to  such
Borrower shall be evidenced (i)  if Tranche A Loans, by a  promissory note
duly  executed and delivered  by Borrower A  substantially in  the form of
Exhibit  B-1 with  blanks appropriately  completed in  conformity herewith
(each a "Tranche A  Note" and, collectively, the "Tranche  A Notes"), (ii)
if Tranche  B Loans, by a  promissory note duly executed  and delivered by
Borrower   B  substantially  in  the  form  of  Exhibit  B-2  with  blanks
appropriately  completed in conformity  herewith (each a  "Tranche B Note"
and, collectively, the "Tranche B Notes"), (iii) if Tranche C  Loans, by a
promissory note duly executed and delivered by Borrower C substantially in
the  form of Exhibit B-3 with blanks appropriately completed in conformity
herewith (each a "Tranche C Note" and, collectively, the "Tranche C Notes"
and  together with  the  Tranche A  Notes  and the  Tranche  B Notes,  the
"Notes.")

          (b)  The  Notes issued to each Bank shall (i) be executed by the
respective Borrower thereunder,  (ii) be payable to the order of such Bank
and  be  dated the  Restatement  Effective  Date,  (iii)  be in  a  stated
principal amount equal to the Commitment of such Bank under the respective
Tranche on such date  and be payable in the principal  amount of the Loans
evidenced thereby, (iv) mature on the Maturity Date, (v) bear interest  as
provided in the appropriate clause of  Section 1.08 in respect of the Base
Rate Loans and Eurodollar  Loans, as the case  may be, evidenced  thereby,
(vi) be  subject to mandatory  repayment as  provided in Section  4.02 and
(vii) be entitled to the benefits of and subject to this Agreement and the
other Credit Documents.<PAGE>


          (c)  Each Bank will note  on its internal records the  amount of
each Loan made by it  and each payment in respect thereof  and will, prior
to any transfer  of any of its Notes, endorse on  the reverse side thereof
the outstanding principal amount  of Loans evidenced thereby.   Failure to
make  any such notation shall not affect the respective Borrower's obliga-
tions in respect of such Loans.

          1.06  Conversions.    The Borrowers  shall  have  the option  to
convert on  any  Business Day  all  or a  portion at  least  equal to  the
applicable Minimum Borrowing Amount of the outstanding principal amount of
the US Dollar Loans owing pursuant  to the Tranche A Facility, the Tranche
B Facility  or  the Tranche  C  Facility, as  the  case may  be,   into  a
Borrowing or Borrowings pursuant to such Facility of another Type of Loan,
provided  that  (i)  except  as otherwise  provided  in  Section  1.10(b),
Eurodollar Loans  may be converted into  Base Rate Loans only  on the last
day of an Interest Period applicable  thereto and no partial conversion of
a  Borrowing of  Eurodollar Loans  shall reduce the  outstanding principal
amount of  the Eurodollar Loans  made pursuant to  such Borrowing  to less
than  the Minimum Borrowing Amount  applicable thereto, (ii)  no Base Rate
Loans may be converted into Eurodollar Loans at any time when a Default or
Event of  Default is  in existence on  the date  of the conversion  if the
Administrative Agent or  the Required  Banks have determined  that such  a
conversion would be disadvantageous  to the Banks and (iii)  Borrowings of
Eurodollar  Loans resulting  from this  Section 1.06  shall be  limited in
number as  provided  in  Section 1.02.    Each such  conversion  shall  be
effected by the respective Borrower giving the Administrative Agent at its
Notice  Office, prior to  12:00 Noon (New  York time), at  least three (3)
Business  Days'  prior  written  notice  (or  telephonic  notice  promptly
confirmed in writing) (each a "Notice of Conversion") specifying the Loans
to be so converted, the Type of Loans  to be converted into and, if to  be
converted into  a Borrowing of Eurodollar Loans, the Interest Period to be
initially applicable  thereto.  The  Administrative Agent shall  give each
Bank prompt  notice of any such  proposed conversion affecting any  of its
Loans.

          1.07  Pro Rata Borrowings.  All Loans under this Agreement shall
be  made  by  the  Banks  pro  rata  on  the  basis  of  their  respective
Commitments.   No Bank shall be  responsible for any default  by any other
Bank in  its obligation to  make Loans  hereunder and each  Bank shall  be
obligated  to make the Loans provided to  be made by it hereunder, regard-
less  of  the  failure  of  any  other  Bank  to  fulfill  its commitments
hereunder.

          1,08  Interest.  (a)  The unpaid  principal amount of  each Base
Rate Loan shall bear interest from the date of the Borrowing thereof until
maturity (whether by acceleration or otherwise) at a rate per  annum which
shall at all times be the Base Rate in effect from time to time.

          (b)  The unpaid  principal amount of each  Eurodollar Loan shall
bear  interest from  the  date of  the  Borrowing thereof  until  maturity
(whether by  acceleration or otherwise) at a rate per annum which shall at
all times be the Applicable Eurodollar Margin plus the relevant Eurodollar
Rate.

          (c)  All overdue principal and, to the  extent permitted by law,
overdue  interest in respect  of each  Loan and  any other  overdue amount
payable hereunder shall bear interest at a rate per annum  equal to 2% per<PAGE>


annum in excess of the rate otherwise applicable thereto, PROVIDED that no
Loan shall  bear  interest  after  maturity (whether  by  acceleration  or
otherwise) at a  rate per  annum less than  2% plus  the rate of  interest
applicable thereto at maturity.

          (d)  Interest  shall accrue from  and including the  date of any
Borrowing to but excluding the date of any repayment thereof  and shall be
payable (i) in respect of each Base Rate Loan, quarterly in arrears on the
first  day of each  January, April, July  and October, (ii)  in respect of
each  Eurodollar Loan, on the last day  of each Interest Period applicable
thereto  and, in  the case  of an  Interest  Period in  excess of  six (6)
months, on the date  occurring six (6) months after the  first day of such
Interest Period  and (iii) in respect  of each Loan, on  any prepayment or
conversion (other than the  prepayment and conversion of Base  Rate Loans)
(on the amount prepaid or converted), at maturity (whether by acceleration
or otherwise) and, after such maturity, on demand.

          (e)  All  computations of  interest hereunder  shall be  made in
accordance with Section 12.07(b).

          (f)  The Administrative  Agent,  upon determining  the  interest
rate for  any Borrowing of Loans  for any Interest Period,  shall promptly
notify the respective Borrower and the Banks thereof.

          1.09  Interest Periods.  (a)  At the time  any Borrower gives  a
Notice of Borrowing  or Notice of Conversion in respect  of the making of,
or conversion  into, a Borrowing of  Eurodollar Loans (in the  case of the
initial  Interest Period applicable thereto)  or prior to  12:00 Noon (New
York  time) on  the  third Business  Day  prior to  the  expiration of  an
Interest  Period applicable to a  Borrowing of Eurodollar  Loans, it shall
have the  right to elect by giving the Administrative Agent written notice
(or  telephonic notice  promptly  confirmed in  writing)  of the  Interest
Period applicable to such  Borrowing, which Interest Period shall,  at the
option of such  Borrower, be a one (1), three (3)  or six (6) month period
(or, to  the extent  available  and at  the reasonable  discretion of  the
Administrative  Agent, a nine (9) or twelve (12) month Interest Period or,
if  each Bank agrees, a non-standard period).  Notwithstanding anything to
the contrary contained above:

          (i)  the  initial   Interest   Period  for   any  Borrowing   of
     Eurodollar  Loans  shall  commence  on the  date  of  such  Borrowing
     (including the date of any  conversion from a Borrowing of  Base Rate
     Loans) and each  Interest Period occurring  thereafter in respect  of
     such Borrowing shall  commence on  the day on  which the  immediately
     preceding Interest Period expires;

         (ii)  if any Interest Period begins  on a day for which  there is
     no numerically corresponding  day in the calendar month at the end of
     such  Interest Period,  such Interest  Period shall  end on  the last
     Business Day of such calendar month;

        (iii)  if any  Interest Period  would  otherwise expire  on a  day
     which is not a Business Day, such Interest Period shall expire on the
     next succeeding  Business Day, PROVIDED  that if any  Interest Period
     would otherwise expire on a day which is not a Business Day but  is a
     day of the  month after which no further Business  Day occurs in such<PAGE>


     month, such Interest Period shall expire on the immediately preceding
     Business Day;

         (iv)  no Interest Period shall extend beyond the Maturity Date; 

          (v)  no  Interest Period with respect  to any Borrowing of Loans
     under  any Facility may be elected  that would extend beyond any date
     upon which a Scheduled Commitment Reduction is required to be made in
     respect of  such Facility if, after giving effect to the selection of
     such  Interest  Period,  the  aggregate  principal  amount  of  Loans
     maintained  as  Eurodollar Loans  under  the  Facility with  Interest
     Periods ending after  such date would exceed the  aggregate principal
     amount  of Loans of such  Facility permitted to  be outstanding after
     such Scheduled Commitment Reduction; 

         (vi)  no Interest  Period  may be  elected  at  any time  when  a
     Default  or  Event   of  Default   is  then  in   existence  if   the
     Administrative Agent or the Required  Banks have determined that such
     an election at such time would be disadvantageous to the Banks; and

        (vii)  no  more  than  ten   (10)  Interest  Periods   (except  as
     described in  Clause (b) below) of  one (1) month may  be selected by
     the Borrowers in any calendar year.

          (b)  If  upon  the  expiration  of  any  Interest  Period,   the
respective Borrower has failed to (or may not) elect a new Interest Period
to  be applicable  to  the respective  Borrowing  of Eurodollar  Loans  as
provided above,  such Borrower shall be  deemed to have elected  a six (6)
month Interest Period for  such Borrowing, PROVIDED that if  such Borrower
may not elect an Interest Period as a result of clause (a)(vi) above, such
Borrower will  be deemed to have  elected a one (1)  month Interest Period
effective as of the expiration date of such current Interest Period.
     
          1.10  Increased Costs, Illegality,  etc.  (a)  In the event that
(x) in the case of clause (i) and (iv)  below, the Administrative Agent or
(y) in  the case  of clauses  (ii) and (iii)  below, any  Bank shall  have
determined (which determination shall, absent manifest error, be final and
conclusive and binding upon all parties hereto):

          (i)  on any  date for  determining the Eurodollar  Rate for  any
     Interest Period that, by reason of any changes arising after the date
     of this Agreement affecting the interbank Eurodollar market, adequate
     and  fair means do not exist for ascertaining the applicable interest
     rate on the basis provided for in the  definition of Eurodollar Rate;
     or

         (ii)  at any time, that  such Bank shall incur increased costs or
     reductions  in  the amounts  received  or  receivable hereunder  with
     respect to any  Eurodollar Loans  (other than any  increased cost  or
     reduction  in the amount  received or  receivable resulting  from the
     imposition of  or a change in the  rate or basis of  taxes or similar
     charges) because of (x) any  change since the date of  this Agreement
     in any applicable  law, governmental rule,  regulation, guideline  or
     order  (or  in  the  interpretation  or  administration  thereof  and
     including  the introduction  of  any new  law  or governmental  rule,
     regulation,  guideline  or order)  (such  as,  for  example, but  not<PAGE>


     limited  to, a change in  official reserve requirements,  but, in all
     events, excluding reserves required under Regulation D to  the extent
     included  in the computation of the Eurodollar Rate) and/or (y) other
     circumstances  occurring  after  the  date  of  this  Agreement   and
     affecting the interbank Eurodollar market; 

        (iii)  at  any  time,  that  the  making  or  continuance  of  any
     Eurodollar Loan has  become unlawful  by compliance by  such Bank  in
     good faith with any law, governmental rule, regulation, guideline (or
     would conflict with any such governmental rule, regulation, guideline
     or  order not  having  the force  of  law but  with  which such  Bank
     customarily complies  even though  the  failure to  comply  therewith
     would not be unlawful); or

         (iv)  at any  time,  that Pounds  Sterling are  not available  in
     sufficient   quantity,   as  determined   in   good   faith  by   the
     Administrative Agent, to fund any Borrowing of Pound Sterling Loans;

then, and in any such event, such Bank (or the Administrative Agent in the
case of clause  (i) and (iv) above) shall (x) on  such date and (y) within
ten (10)  Business Days of the date on which  such event no longer exists,
give notice (by telephone confirmed in writing) to the respective Borrower
and  to the Administrative Agent  of such determination  (which notice the
Administrative  Agent shall promptly transmit to each of the other Banks).
Thereafter  (A)  in  the  case  of  clause  (i)  above,  Eurodollar  Loans
(including, without limitation, Pound  Sterling Loans) shall no longer  be
available  until  such  time  as the  Administrative  Agent  notifies  the
respective  Borrower and the Banks  that the circumstances  giving rise to
such notice by the Administrative Agent no longer exist, and any Notice of
Borrowing or Notice  of Conversion given by such  Borrower with respect to
Eurodollar Loans which have not yet been made shall be deemed rescinded by
such  Borrower,  (B) in  the case  of  clause (ii)  above,  the respective
Borrower shall, subject to Section 1.12(b) (to the extent applicable), pay
to  such Bank, upon written  demand therefor, such  additional amounts (in
the form  of an increased rate  of, or a different  method of calculating,
interest or otherwise as such Bank in its sole discretion shall determine)
as  shall be required to compensate such  Bank for such increased costs or
reductions in amounts  receivable hereunder  (a written notice  as to  the
additional   amounts  owed  to  such  Bank,  showing  the  basis  for  the
calculation thereof, submitted to such Borrower by such Bank shall, absent
manifest  error,  be final  and conclusive  and  binding upon  all parties
hereto), (C)  in the case of  clause (iii) above,  the respective Borrower
shall take the actions  specified in Section 1.10(b)  as promptly as  pos-
sible and, in any event, within the time period required by law and (D) in
the  case of clause  (iv) above, Pound  Sterling Loans shall  no longer be
available  until such time as the Administrative Agent notifies Borrower B
and the Tranche B Banks that  the circumstances giving rise to such notice
by the Administrative Agent no longer  exists and any Notice of  Borrowing
given by  Borrower B with respect  to Pound Sterling Loans  which have not
yet been incurred shall be deemed rescinded by Borrower B.

          (b)  At  any time that any US Dollar Eurodollar Loan is affected
by  the  circumstances  described in  Section  1.10(a)(ii)  or  (iii), the
affected Borrower  may (and in  the case  of a US  Dollar Eurodollar  Loan
affected pursuant to Section 1.10(a)(iii), such Borrower shall) either (i)
if  the  affected  Eurodollar  Loan  is  then  being made  pursuant  to  a
Borrowing, cancel  said  Borrowing  by  giving  the  Administrative  Agent<PAGE>


telephonic notice (confirmed promptly in writing) thereof on the same date
that such Borrower was notified by a Bank pursuant to  Section 1.10(a)(ii)
or (iii),  or (ii) if  the affected Eurodollar  Loan is then  outstanding,
upon at least three (3) Business Days' notice to the Administrative Agent,
require the affected Bank to convert each such Eurodollar Loan into a Base
Rate Loan,  PROVIDED that if  more than  one (1) Bank  is affected  at any
time, then  all affected Banks must  be treated the same  pursuant to this
Section 1.10(b).   If at any time the  making or continuance of  any Pound
Sterling Loan,  or giving effect to  the obligations of a  Bank in respect
thereof,  has been made  unlawful by any  law coming into force  or by any
change in  any law or regulation  or in the interpretation  or application
thereof by any court or  any statutory board or commission, then  Borrower
B,  upon  at  least  three  (3)  Business  Days'  written  notice  to  the
Administrative  Agent and  the affected  Bank or  Banks, shall  repay such
Pound Sterling Loan in full.

          (c)  If  any  Bank   shall  have  determined   that  after   the
Restatement Effective Date,  the adoption or effectiveness  of any applic-
able law, rule  or regulation  regarding capital adequacy,  or any  change
therein,  or any change in the interpretation or administration thereof by
any governmental authority, central bank or comparable agency charged with
the  interpretation or administration thereof,  or compliance by such Bank
with any request or  directive regarding capital adequacy (whether  or not
having the force of law but with which such Bank customarily complies even
though the failure to comply therewith would not be unlawful)  of any such
authority, central bank or comparable agency, has or would have the effect
of reducing the rate of return on such Bank's capital or assets as  a con-
sequence of its commitments or obligations hereunder to a level below that
which  such Bank could have achieved but for such adoption, effectiveness,
change  or compliance (taking into consideration such Bank's policies with
respect to capital adequacy), then from time to time, within 15 days after
demand by such  Bank (with a copy to the  Administrative Agent), each Bor-
rower  agrees, subject to Section  1.12(b) (to the  extent applicable), to
pay to such Bank such additional amount or amounts as will compensate such
Bank for such  reduction.  Each Bank, upon determining  in good faith that
any additional amounts will  be payable pursuant to this  Section 1.10(c),
will give written  notice thereof (such notice  to be given  in accordance
with Section 1.12(b) below) to such Borrower, which notice shall set forth
the basis of the calculation of such additional amounts.

          1.11  Compensation.  Each Borrower shall  compensate each  Bank,
upon its  written request  (which request  shall set forth  the basis  for
requesting  such compensation),  for all  reasonable losses,  expenses and
liabilities (including, without limitation, any loss, expense or liability
incurred by reason of the liquidation or reemployment of deposits or other
funds required by such Bank to fund its Eurodollar Loans  but excluding in
any  event the loss of  anticipated profits) which  such Bank may sustain:
(i) if  for  any  reason  (other  than a  default  by  such  Bank  or  the
Administrative Agent) a Borrowing of Eurodollar  Loans does not occur on a
date specified therefor in  a Notice of Borrowing or Notice  of Conversion
(whether or not withdrawn  by the respective Borrower or  deemed withdrawn
pursuant  to  Section  1.10(a));  (ii)  if  any  prepayment,  repayment or
conversion of  any of  its  Eurodollar Loans  (including  as a  result  of
Section 1.10 or the last paragraph of Section 9) occurs on a date which is
not the  last day of an  Interest Period applicable thereto,  (iii) if any
prepayment of any  of such Borrower's Eurodollar Loans is  not made on any
date specified in a notice  of prepayment given by such Borrower;  or (iv)<PAGE>


as a consequence  of (x) any other  default by such Borrower to  repay its
Eurodollar Loans  when required by the  terms of this Agreement  or (y) an
election made pursuant to Section 1.10(b).

          1.12  Change of Lending  Office; Limitation on Indemnities.  (a)
Each Bank agrees that, upon the occurrence of any event giving rise to the
operation of Section 1.10(a)(ii) or (iii), 1.10(c), 2.05 or  4.04 with re-
spect to  such Bank, it will,  if requested by the  affected Borrower, use
reasonable efforts (subject to overall policy considerations of such Bank)
to designate another  lending office  for any Loans  or Letters of  Credit
affected by  such event, PROVIDED  that such  designation is made  on such
terms that such Bank and  its lending office suffer no economic,  legal or
regulatory disadvantage, with  the object of  avoiding the consequence  of
the event giving  rise to the operation  of any such Section.   Nothing in
this Section 1.12 shall affect  or postpone any of the obligations  of any
Borrower or the right of any Bank provided in Section 1.10, 2.05 or 4.04.

          (b)  Notwithstanding anything in this Agreement to the contrary,
to the extent any notice  required by Section 1.10, 2.05 or 4.04  is given
by any  Bank more  than 90  days after such  Bank obtained,  or reasonably
should have obtained, knowledge of the occurrence of the event giving rise
to  the additional costs of the type  described in such Section, such Bank
shall not be entitled to compensation under Section 1.10, 2.05 or 4.04 for
any amounts incurred or accruing prior to the giving of such notice to the
respective Borrower.

          1.13  Replacement of  Banks.  (x)  Upon  the occurrence  of  any
event  giving rise  to  the operation  of  Section 1.10(a)(ii)  or  (iii),
1.10(c), 2.05 or 4.04 with respect to any Bank which results in such  Bank
charging  to any  Borrower  increased  costs  in  excess  of  those  being
generally charged  by the other Banks  or such Bank  becoming incapable of
making Eurodollar Loans, (y)  if a Bank becomes  a Defaulting Bank  and/or
(z) as provided in Section 12.12(b), in the case of a refusal by a Bank to
consent  to a  proposed  change,  waiver,  discharge or  termination  with
respect to  this Agreement which has been  approved by the Required Banks,
the Borrowers shall have the right, if no Default or Event of Default then
exists, to replace such Bank (the "Replaced Bank") with one  or more other
Eligible   Transferee   or  Transferees   reasonably  acceptable   to  the
Administrative Agent, none of which Eligible Transferees shall  constitute
a  Defaulting  Bank at  the time  of  such replacement  (collectively, the
"Replacement  Bank"), PROVIDED  that (i)  at the  time of  any replacement
pursuant to this Section 1.13,  the Replacement Bank shall enter  into one
or more Assignment and Assumption Agreements pursuant to Section  12.04(b)
(and with all fees payable pursuant to said Section 12.04(b) to be paid by
the Replacement Bank) pursuant to which the Replacement Bank shall acquire
all  of the  Commitments  and  outstanding  Loans of,  and  in  each  case
participations  in Letters of Credit by, the Replaced Bank and, in connec-
tion therewith, shall pay to  (x) the Replaced Bank in respect  thereof an
amount equal to the sum of (A) the principal  of, and all accrued interest
on, all outstanding  Loans of the Replaced  Bank, (B) all Unpaid  Drawings
that  have been  funded  by (and  not reimbursed  to) such  Replaced Bank,
together with all  then unpaid interest with respect  thereto at such time
and (C)  all accrued, but theretofore  unpaid, Fees owing  to the Replaced
Bank pursuant  to Section 3.01,  and (y)  the Letter of  Credit Issuer  an
amount  equal to  such Replaced  Bank's Percentage  of any  Unpaid Drawing
(which at such  time remains an Unpaid Drawing) to  the extent such amount
was not theretofore funded by such Replaced Bank, and (ii) all obligations<PAGE>


of any Borrower owing to the Replaced Bank  (other than those specifically
described in clause (i) above in respect of which the  assignment purchase
price has been,  or is concurrently being, paid) shall be  paid in full to
such Replaced Bank  concurrently with such  replacement and such  Replaced
Bank shall promptly return all cancelled Notes to the Borrowers.  Upon the
execution of  the respective  Assignment  and Assumption  Agreements,  the
payment of amounts referred  to in clauses (i) and (ii)  above, and, if so
requested by the  Replacement Bank,  delivery to the  Replacement Bank  of
appropriate Notes executed  by the respective  Borrowers, the  Replacement
Bank shall  become a Bank hereunder  and the Replaced Bank  shall cease to
constitute a  Bank  hereunder,  except  with  respect  to  indemnification
provisions applicable  to the  Replaced Bank under  this Agreement,  which
shall survive as to such Replaced Bank as described herein. 

          SECTION 2.  LETTERS OF CREDIT.

          2.01  Letters of Credit.  (a)  Subject to and upon the terms and
conditions herein set forth, each US Borrower may request  that the Letter
of Credit  Issuer  at any  time and  from time  to  time on  or after  the
Restatement  Effective Date  and  prior to  the  Business Day  immediately
preceding the Maturity Date issue, for the account of such Borrower and in
support of L/C Supportable Obligations, and  subject to and upon the terms
and  conditions herein set  forth, the Letter  of Credit  Issuer agrees to
issue from time to time, irrevocable standby letters of credit denominated
in US Dollars and in such form as may  be approved by the Letter of Credit
Issuer (each such standby letter of  credit issued to Borrower A under the
Tranche A  Facility, a "Tranche A Letter of Credit," and each such standby
letter  of credit  issued to Borrower  C under  the Tranche  C Facility, a
"Tranche C Letter  of Credit," and together with the  Tranche A Letters of
Credit, the "Letters of Credit").  Annex III contains a description of all
letters of credit issued for the account of Borrower A  under the Existing
Credit  Agreement prior to the  Restatement Effective Date  and which will
remain outstanding on the Restatement Effective Date.  Each such letter of
credit,  including  any extension  thereof  (each an  "Existing  Letter of
Credit") shall constitute a "Tranche A Letter of Credit", for all purposes
of this Agreement and shall be deemed issued for purposes of Sections 2.04
and 3.01 on the Restatement Effective Date.

          (b)  Notwithstanding  the  foregoing,  (i) no  Letter  of Credit
shall be issued, the Stated Amount  of which, when added to the Tranche  A
Letter  of  Credit  Outstandings  and  the  Tranche  C  Letter  of  Credit
Outstandings  (exclusive of Unpaid Drawings  which are repaid  on the date
of, and prior to the issuance of, the respective Letter of Credit) at such
time, would  exceed either (x)  $75,000,000 or  (y) (A) in  the case of  a
Tranche A Letter of Credit,  when added to the aggregate principal  amount
of all Tranche A Loans made by Non-Defaulting Banks then  outstanding, the
Adjusted Total Tranche A Commitment at such time and  (B) in the case of a
Tranche C Letter of Credit, when  added to the Aggregate principal  amount
of all Tranche C Loans made  by Non-Defaulting Banks then outstanding, the
Adjusted Total Tranche C Commitment at  such time; and (ii) each Letter of
Credit shall have an expiry  date occurring not later than the  earlier of
(x) the  date which occurs 30  months after the date  of issuance thereof,
and (y) the Business Day immediately preceding the Maturity Date; PROVIDED
that the Borrower may  request, and the Participants with  respect thereto
may consent in  their sole absolute discretion to extend  the expiry dates
of certain Letters of Credit beyond the Maturity Date.<PAGE>


          2.02  Letter of Credit Requests; Request for Issuance of  Letter
of Credit.  (a)  Whenever a US Borrower desires that a Letter of Credit be
issued,  such  Borrower shall  give the  Letter  of Credit  Issuer written
notice (including by way of  telecopier) in the form of Exhibit C prior to
12:00 Noon (New York time) at least seven (7) Business  Days (or three (3)
Business Days if the issuance of the Letter of Credit has been approved in
advance  by the  Letter of Credit  Issuer) prior  to the  proposed date of
issuance  (which  shall  be a  Business  Day) (each  a  "Letter  of Credit
Request"), which Letter of Credit Request shall include any documents that
the  Letter  of  Credit  Issuer  may   reasonably  require  in  connection
therewith.   The Letter of Credit  Request shall after three  (3) Business
Days (or one (1) Business Day if the issuance  of the Letter of Credit has
been approved  in advance by the Letter  of Credit Issuer) be irrevocable.
The Letter of Credit Issuer shall promptly notify each Bank of each Letter
of Credit Request.

          (b)  The  Letter of  Credit Issuer  shall, on  the date  of each
issuance  of a Letter of Credit  by it, give each  Bank and the respective
Borrower written notice of the issuance of such Letter of Credit.

          2.03         Agreement    to    Repay     Letter    of    Credit
Payments.  (a) (i) Borrower  A hereby  agrees to  reimburse the  Letter of
Credit Issuer, by making payment at the US Payment Office, for any payment
or disbursement  made by the Letter  of Credit Issuer under  any Tranche A
Letter  of Credit (each such amount so paid or disbursed until reimbursed,
a  "Tranche  A Unpaid  Drawing")  and  (ii) Borrower  C  hereby agrees  to
reimburse the Letter of Credit Issuer, by making payment at the US Payment
Office,  for  any payment  or disbursement  made by  the Letter  of Credit
Issuer under any  Tranche C Letter of Credit (each such  amount so paid or
disbursed until  reimbursed, a  "Tranche C Unpaid  Drawing" and,  together
with Tranche A Unpaid Drawings, "Unpaid Drawings"), in the case of each of
clauses (i)  and (ii) above,  immediately after, and  in any event  on the
date on  which the respective Borrower is notified by the Letter of Credit
Issuer of such payment or disbursement with interest on the amount so paid
or disbursed by the Letter of  Credit Issuer, to the extent not reimbursed
prior to  1:00 P.M. (New York  time) on the  date of such payment  or dis-
bursement,  from and  including the  date  paid or  disbursed  to but  not
including the date the Letter of Credit Issuer is reimbursed therefor at a
rate per annum which  shall be the Base Rate  as in effect on the  date of
such notice of payment or disbursement (plus an additional 2% per annum if
not reimbursed by the third Business Day after  the date of such notice of
payment or disbursement), such interest also to be payable on demand.

          (b)  (i) The  Letter of Credit  Issuer shall not  concern itself
with the  regularity or propriety of  any demand made under  any Letter of
Credit  beyond  the  face  thereof,  provided  that  such demand  strictly
complies with the terms of such Letter of Credit and (subject to the above
proviso)  it shall  not be a  defense to a  claim of the  Letter of Credit
Issuer made pursuant to Section 13.01(ii) that the Letter of Credit Issuer
could have resisted the payment in respect of which such claim is made.

          (ii) The   respective Borrower's  obligation under this  Section
2.03  to reimburse  the Letter  of Credit  Issuer with  respect  to Unpaid
Drawings (including, in each case, interest thereon) shall be absolute and
unconditional  under any  and  all circumstances  and irrespective  of any
setoff, counterclaim or defense to payment which such Borrower may have or<PAGE>


have had  against  the Letter  of Credit  Issuer or  any Bank,  including,
without  limitation, any  defense based  upon the  failure of  any drawing
under a Letter of Credit  to conform to the terms of the  Letter of Credit
(other  than the failure of the Letter  of Credit Issuer to determine that
any documents  required to be delivered  under such Letter of  Credit have
been delivered and that  they substantially comply on their face  with the
requirements  of  such  Letter  of  Credit)  or  any  non-application   or
misapplication  by the  beneficiary  of  the  proceeds  of  such  drawing;
PROVIDED,  however, that such Borrower shall not be obligated to reimburse
the Letter of Credit Issuer for any wrongful payment made by the Letter of
Credit  Issuer under a Letter  of Credit as a result  of acts or omissions
constituting willful misconduct  or gross  negligence on the  part of  the
Letter of Credit Issuer.

          2.04  Letter  of  Credit Participations.  (a)  Immediately  upon
the issuance  by the Letter  of Credit Issuer  of any Tranche  A Letter of
Credit,  the Letter  of Credit  Issuer shall  be deemed  to have  sold and
transferred  to  each Tranche  A Bank,  and each  Tranche  A Bank  (each a
"Tranche A  Participant") shall be deemed  irrevocably and unconditionally
to have purchased and received  from the Letter of Credit  Issuer, without
recourse  or warranty,  an undivided  interest  and participation,  to the
extent of  such Bank's Adjusted  Tranche A  Percentage, in such  Letter of
Credit, each substitute letter of credit, each drawing made thereunder and
the  obligations of Borrower A  under this Agreement  with respect thereto
(although  the Letter  of  Credit Fee  shall  be payable  directly  to the
Administrative  Agent for  the account  of the  Tranche A  Participants as
provided in Section  3.01(b) and the Tranche A Participants  shall have no
right to receive any portion of any Facing Fees) and any security therefor
or guaranty  pertaining  thereto.    Upon any  change  in  the  Tranche  A
Commitments or Adjusted  Tranche A  Percentages of the  Banks pursuant  to
Section 12.04(b)  or upon a Bank  Default, it is hereby  agreed that, with
respect to all outstanding Tranche A Letters of Credit and Unpaid Drawings
thereon, there  shall  be an  automatic adjustment  to the  participations
pursuant to  this  Section 2.04  to  reflect the  new Adjusted  Tranche  A
Percentages of the assigning and assignee  Bank or of all Tranche A Banks,
as the case may be. 

          (b)  Immediately  upon  the issuance  by  the  Letter of  Credit
Issuer of  any Tranche C  Letter of  Credit, the Letter  of Credit  Issuer
shall be deemed to have sold  and transferred to each Tranche C Bank,  and
each Tranche C Bank (each a "Tranche C Participant" and, together with the
Tranche A  Participants,  each  a  "Participant"  and,  collectively,  the
"Participants") shall be  deemed irrevocably and  unconditionally to  have
purchased  and received from the Letter of Credit Issuer, without recourse
or warranty, an  undivided interest  and participation, to  the extent  of
such Bank's Adjusted Tranche C Percentage, in such Letter of  Credit, each
substitute  letter  of  credit,  each  drawing  made  thereunder  and  the
obligations  of  Borrower C  under  this  Agreement  with respect  thereto
(although  the Letter  of  Credit Fee  shall be  payable  directly to  the
Administrative  Agent for  the account  of the  Tranche C  Participants as
provided  in Section 3.01(b) and the  Tranche C Participants shall have no
right to receive any portion of any Facing Fees) and any security therefor
or  guaranty  pertaining  thereto.   Upon  any  change  in  the Tranche  C
Commitments or Adjusted  Tranche C  Percentages of the  Banks pursuant  to
Section 12.04(b)  or upon a Bank  Default, it is hereby  agreed that, with
respect to all outstanding Tranche C Letters of Credit and Unpaid Drawings
thereon,  there shall  be an  automatic  adjustment to  the participations<PAGE>


pursuant to  this  Section 2.04  to  reflect the  new Adjusted  Tranche  C
Percentages of the assigning and assignee  Bank or of all Tranche C Banks,
as the case may be. 

          (c)  In determining whether  to pay under any  Letter of Credit,
the Letter  of Credit Issuer shall not have any obligation relative to the
respective  Participants  other  than  to  determine  that  any  documents
required to be  delivered under such Letter of  Credit have been delivered
and that  they substantially comply on their face with the requirements of
such Letter of  Credit.  Any action  taken or omitted  to be taken by  the
Letter of Credit Issuer under or  in connection with any Letter of Credit,
if  taken  or  omitted  in the  absence  of  gross  negligence  or willful
misconduct, shall not create for the Letter of Credit Issuer any resulting
liability to the respective Participants.

          (d)  In the event  that the  Letter of Credit  Issuer makes  any
payment under any Letter  of Credit and the respective Borrower  shall not
have  reimbursed such  amount  in full  to  the  Letter of  Credit  Issuer
pursuant  to Section 2.03(a), the  Letter of Credit  Issuer shall promptly
notify  each  respective  Participant  of  such  failure,  and  each  such
Participant shall promptly and unconditionally pay to the Letter of Credit
Issuer,  the amount of such Participant's Adjusted Tranche A Percentage or
Adjusted Tranche C Percentage, whichever the case may  be, of such payment
in U.S. Dollars and in same day funds; PROVIDED, HOWEVER, that no Partici-
pant shall be obligated to pay to the Letter of Credit Issuer its Adjusted
Tranche  A Percentage or Adjusted Tranche C Percentage, whichever the case
may be, of such unreimbursed  amount for any wrongful payment made  by the
Letter of Credit  Issuer under a Letter of  Credit as a result of  acts or
omissions constituting willful misconduct or gross negligence on  the part
of the Letter of Credit  Issuer.  If the Administrative Agent  so notifies
any  Participant required  to fund  an Unpaid  Drawing  under a  Letter of
Credit  prior to  1:00 P.M.  (New  York time)  on any  Business Day,  such
Participant  shall  make available  to the  Letter  of Credit  Issuer such
Participant's  Adjusted  Tranche  A  Percentage  or  Adjusted  Tranche   C
Percentage, whichever  the case may be,  of the amount of  such payment on
such Business Day in  same day funds.  If and to  the extent such Partici-
pant shall not have so made its Adjusted Tranche A  Percentage or Adjusted
Tranche C  Percentage, whichever the  case may be,  of the amount  of such
Unpaid  Drawing available to the Letter of Credit Issuer, such Participant
agrees to pay  to the Letter  of Credit Issuer,  forthwith on demand  such
amount, together with interest thereon, for each day from such date  until
the  date  such amount  is paid  to  the Letter  of Credit  Issuer  at the
overnight Federal Funds Effective Rate.  The failure of any Participant to
make  available to  the Letter  of Credit  Issuer its  Adjusted Tranche  A
Percentage or Adjusted Tranche C Percentage, whichever the case may be, of
any Unpaid Drawing under any Letter of Credit shall not  relieve any other
Participant of its obligation hereunder to make available to the Letter of
Credit  Issuer its  Adjusted Tranche  A Percentage  or Adjusted  Tranche C
Percentage, whichever the case may be, of any payment under  any Letter of
Credit on the date required, as specified  above, but no Participant shall
be responsible for the failure of any other Participant  to make available
to the Letter of Credit Issuer such other Participant's Adjusted Tranche A
Percentage or Adjusted Tranche C Percentage, whichever the case may be, of
any such payment.

          (e)  Whenever the Letter of Credit Issuer receives a  payment of
a  reimbursement  obligation as  to  which  the  Administrative Agent  has<PAGE>


received for the account of the Letter of Credit Issuer  any payments from
the Participants pursuant to clause (d) above, the Letter of Credit Issuer
shall  pay  to each  respective Participant  which  has paid  its Adjusted
Tranche  A Percentage or Adjusted Tranche C Percentage, whichever the case
may be, thereof, in Dollars and in same day funds, an amount equal to such
Participant's  Adjusted  Tranche  A  Percentage  or  Adjusted  Tranche   C
Percentage, whichever the case may be, of the principal amount thereof and
interest thereon  accruing at the  overnight Federal Funds  Effective Rate
after the purchase of the respective participations. 

          (f)  The obligations of the respective Participants to make pay-
ments  to the Letter  of Credit Issuer  with respect to  Letters of Credit
shall be irrevocable  and not  subject to counterclaim,  set-off or  other
defense or any other qualification  or exception whatsoever (PROVIDED that
no  Participant  shall be  required to  make  payments resulting  from the
Letter of  Credit Issuer's  gross  negligence or  willful misconduct)  and
shall be made  in accordance with the terms and  conditions of this Agree-
ment under  all circumstances, including,  without limitation, any  of the
following circumstances:

         (i) any lack of validity  or enforceability of this  Agreement or
     any of the other Credit Documents;

        (ii) the  existence of any claim,  set-off, defense or other right
     which  the respective  Borrower  may  have  at  any  time  against  a
     beneficiary named in a Letter of Credit, any transferee of any Letter
     of Credit (or any Person for whom any such transferee may be acting),
     the  Administrative  Agent,  any Bank  or  other  Person, whether  in
     connection   with  this   Agreement,  any   Letter  of   Credit,  the
     transactions  contemplated  herein  or  any   unrelated  transactions
     (including any  underlying transaction between such  Borrower and the
     beneficiary named in any such Letter of Credit);

       (iii) any  draft, certificate or other document presented under the
     Letter of Credit proving to be forged, fraudulent, or invalid  in any
     respect  or any statement therein  being untrue or  inaccurate in any
     respect;

        (iv) the  surrender  or   impairment  of  any  security   for  the
     performance or  observance of any of  the terms of any  of the Credit
     Documents; or

         (v) the occurrence of any Default or Event of Default.

          2.05  Increased Costs.  If  at any  time after  the date  of the
Agreement,  the adoption or effectiveness  of any applicable  law, rule or
regulation,  or any change therein, or any change in the interpretation or
administration thereof  by any  governmental  authority, central  bank  or
comparable  agency  charged  with  the  interpretation  or  administration
thereof, or compliance by the Letter of Credit Issuer or any Bank with any
request or  directive (whether or  not having  the force of  law but  with
which such Bank  customarily complies  even though the  failure to  comply
therewith would  not be unlawful) by  any such authority,  central bank or
comparable agency shall either  (i) impose, modify or make  applicable any
reserve, deposit, capital adequacy or similar requirement against  Letters
of  Credit  issued  by  the  Letter  of  Credit   Issuer  or  such  Bank's
participation therein, or (ii) shall impose on the Letter of Credit Issuer<PAGE>


or any Bank any other  conditions affecting this Agreement, any Letter  of
Credit or such Bank's participation therein;  and the result of any of the
foregoing is to  increase the cost to the Letter of  Credit Issuer or such
Bank of issuing,  maintaining or participating in any Letter of Credit, or
to  reduce the amount of any  sum received or receivable  by the Letter of
Credit Issuer or  such Bank hereunder  (other than  any increased cost  or
reduction  in the amount received or receivable resulting from the imposi-
tion of  or a change in  the rate or  basis of taxes or  similar charges),
then, upon  written demand  to the  respective Borrower by  the Letter  of
Credit  Issuer or such Bank (a  copy of which notice shall  be sent by the
Letter of  Credit Issuer or such  Bank to the Administrative  Agent), such
Borrower shall, subject to Section 1.11 (to the extent applicable), pay to
the Letter of Credit Issuer or such Bank such additional amount or amounts
as  will compensate  the Letter  of Credit  Issuer or  such Bank  for such
increased cost or  reduction.  A certificate submitted to such Borrower by
the Letter of Credit  Issuer or such Bank, as  the case may be (a  copy of
which certificate  shall be sent  by the Letter  of Credit Issuer  or such
Bank  to the Administrative Agent),  setting forth a  reasonable basis for
the  determination  of  such additional  amount  or  amounts necessary  to
compensate the Letter of Credit Issuer  or such Bank as aforesaid shall be
conclusive and binding on such Borrower absent manifest error.

          2.06  Indemnities.  The respective Borrower under each Letter of
Credit  hereby  agrees to  reimburse and  indemnify  the Letter  of Credit
Issuer  for  and against  any  and all  liabilities,  obligations, losses,
damages, penalties, claims, actions, judgments, suits, costs, expenses  or
disbursements  of whatsoever  kind  or nature  which  may be  imposed  on,
asserted against or incurred by the Letter  of Credit Issuer in performing
its  respective duties  in  any way  relating  to or  arising  out of  its
issuance of Letters of  Credit; PROVIDED that  such Borrower shall not  be
liable for any  portion of such liabilities, obligations, losses, damages,
penalties,  actions, judgments,  suits, costs,  expenses  or disbursements
resulting from the Letter  of Credit Issuer's gross negligence  or willful
misconduct.  To the extent the Letter of Credit Issuer  is not indemnified
by the  respective Borrower, the Participants will reimburse and indemnify
the  Letter   of  Credit  Issuer,   in  proportion  to   their  respective
"percentages"  of  the  Total Tranche  A  Commitment  or  Total Tranche  C
Commitment, as the  case may be, for and against  any and all liabilities,
obligations,  losses,  damages,  penalties,  claims,  actions,  judgments,
suits, costs, expenses or disbursements of whatsoever kind or nature which
may be  imposed on, asserted against  or incurred by the  Letter of Credit
Issuer  in performing  its respective  duties in  any  way relating  to or
arising  out  of  its issuance  of  Letters  of Credit;  PROVIDED  that no
Participants  shall  be  liable  for  any  portion  of  such  liabilities,
obligations, losses, damages, penalties, actions, judgments, suits, costs,
expenses or disbursements  resulting from  the Letter  of Credit  Issuer's
gross negligence or willful misconduct.

          SECTION 3.  FEES; COMMITMENTS.

          3.01  Fees.  (a)  Each   Borrower   agrees   to   pay   to   the
Administrative Agent a commitment commission ("Commitment Commission") pro
rata for the account of (i) in the case of Borrower A, each Non Defaulting
Tranche  A  Bank, (ii)  in the  case of  Borrower  B, each  Non Defaulting
Tranche B  Bank and (iii) in  the case of Borrower  C, each Non-Defaulting
Tranche C Bank for the period from and including the Restatement Effective
Date  to,  but not  including,  the date  the  Total  Commitment has  been<PAGE>


terminated, which Commitment Commission  shall be equal to the  amount set
forth  below as determined by  Holdings' Pricing Ratio,  as calculated for
the last day of the fiscal quarter last ended (PROVIDED that, for purposes
of  calculating the Pricing Ratio  on the Restatement  Effective Date, and
subject  to future determination, the Pricing Ratio shall be determined as
of December  31, 1996), computed at  such rate for each day,  on the daily
amount of  such Bank's Unutilized Commitment under  such Tranche; PROVIDED
that, in  the event a  change in the  Commitment Commission is  made, such
change shall not become effective until the date which is one (1) Business
Day  after the date upon  which the Administrative  Agent receives written
notice from Holdings or any Borrower pursuant to Clause 7.01(e) evidencing
that such change is warranted:

                                           Commitment
          Pricing Ratio                    Commission
      ---------------------           --------------------
 Less than 0.50:1.00                     .15% per annum

 Greater than 0.50:1.00 but less        .20 % per annum
 than 1.00:1.00

 Greater than 1.00:1.00 but less         .25% per annum
 than 2.00:1.00

 Greater than 2.00:1.00 but less         .30% per annum
 than 3.00:1.00

 Greater than 3.00:1.00 but less         .35% per annum
 than 4.00:1.00

 Greater than 4.00:1.00                  .40% per annum

Such  Commitment Commission  shall be  due and payable  in arrears  on the
first day of  each January, April, July  and October and on the  date upon
which the Total Commitment is terminated.

          (b)  Borrower  A and  Borrower  C  each  agree  to  pay  to  the
Administrative Agent for  the account of  (i) in the  case of Borrower  A,
each Non Defaulting Tranche  A Bank and  (ii) in the  case of Borrower  C,
each  Non-Defaulting  Tranche  C Bank,  pro  rata  on the  basis  of their
respective Adjusted  Tranche  A  Percentages  or  Tranche  C  Percentages,
whichever the case may be,  a fee in respect  of each Tranche A Letter  of
Credit  or Tranche  C Letter  of Credit,  whichever the  case may  be (the
"Letter  of  Credit Fee"),  computed  at a  rate  per annum  equal  to the
Applicable Eurodollar Margin  then in effect less 1/10 of  1% on the daily
Stated  Amount of such  Letter of Credit.   Accrued Letter  of Credit Fees
shall  be due and payable  quarterly in arrears  on the first  day of each
January, April, July and  October of each year  and on the date  after the
Total   Commitment  is  terminated   and  no  Letters   of  Credit  remain
outstanding.

          (c)  Borrower A and  Borrower C each agree to pay  to the Letter
of Credit Issuer a fee  in respect of (i) in the case of  Borrower A, each
Tranche  A Letter  of Credit  and  (ii) in  the case  of Borrower  C, each
Tranche C  Letter of Credit  issued by  the Letter of  Credit Issuer  (the
"Facing Fee") computed at the  rate of 1/10 of  1% per annum on the  daily<PAGE>


Stated Amount of  such Letter of Credit.  Accrued Facing Fees shall be due
and payable quarterly in arrears on  the first day of each January, April,
July and October  of each year and on the date  after the Total Commitment
is terminated and no Letters of Credit remain outstanding.

          (d)  Borrower A and Borrower C each agree to pay directly to the
Letter  of  Credit Issuer  upon request  the  amount of  any out-of-pocket
charges or expenses incurred by the Letter of Credit Issuer in  connection
with any confirmation of  (i) in the case of Borrower A, Tranche A Letters
of  Credit and (ii) in the case of Borrower C, Tranche C Letters of Credit
by local banks  requested by such Borrower or any  beneficiary of any such
Letter of Credit.

          (e)  Each  Borrower  shall  pay  to the  Co-Agents  (x)  on  the
Restatement  Effective Date for its own account and/or for distribution to
the  Banks such Fees as heretofore agreed  in writing by such Borrower and
the Co-Agents and (y) for  their own accounts such other fees as agreed to
in writing between such Borrower and the Co-Agents, when and as due.

          (f)  All  computations of Fees shall be  made in accordance with
Section 12.07(b).

          3.02  Voluntary  Reduction of  Commitments.  (a)  Upon  at least
three  (3)  Business  Days'  prior written  notice  (or  telephonic notice
confirmed in writing)  to the  Administrative Agent at  its Notice  Office
(which  notice the Administrative Agent shall promptly transmit to each of
the affected Banks), each  Borrower shall have the right,  without premium
or  penalty,  to  terminate  or  partially  reduce  the  Total  Unutilized
Commitment under  (a) in the case  of Borrower A, the  Tranche A Facility,
(b) in the case  of Borrower B, the Tranche B Facility and (c) in the case
of Borrower C, the Tranche C Facility, PROVIDED that (i)  any such termin-
ation shall apply to proportionately and permanently reduce the respective
Commitment under such  Facility of each Bank with a  Commitment under such
Facility, (ii) no  such reduction shall  reduce any Non-Defaulting  Bank's
Commitment  under such Facility to an amount  that is less than the sum of
(x) the  outstanding Loans of such  Bank under such Facility  plus, in the
case of the Tranche A Facility and the Tranche C Facility, (y) such Bank's
Adjusted Tranche A Percentage or Adjusted Tranche C  Percentage, whichever
the  case may be, of Tranche A Letter  of Credit Outstandings or Tranche C
Letter  of Credit  Outstandings,  whichever the  case  may be,  (iii)  any
partial reduction pursuant to this Section  3.02 shall be in the amount of
at least $5,000,000 and (iv) any such reduction shall reduce the remaining
Scheduled  Commitment Reductions under such Facility pro rata based on the
then remaining amounts of such Scheduled Commitment Reductions.

     (b)  Provided that no  Default or  Event of Default  exists or  would
result therefrom, upon  at least  three (3) Business  Days' prior  written
notice (or telephonic  notice confirmed in writing) to  the Administrative
Agent  at its Notice Office  (which notice the  Administrative Agent shall
promptly  transmit  to each  Tranche  A  Bank and  each  Tranche  C Bank),
Borrower A or Borrower C may elect to increase (a maximum of six (6) times
during the term of this Agreement) the Total Tranche A Commitment or Total
Tranche C  Commitment, as  the case  may be,  by an amount  not less  than
$500,000 individually  and not more than  $15,000,000, either individually
or in the aggregate;  PROVIDED that (i) in the  event the Total Tranche  A
Commitment is increased, the  Total Tranche C Commitment shall  be reduced
by an  amount exactly equal  to such  increase and (ii)  in the event  the<PAGE>


Total  Tranche C Commitment is  increased, the Total  Tranche A Commitment
shall be reduced by an amount exactly equal to such increase; and PROVIDED
FURTHER,  that  (x)  any increase  or  decrease  in  the Total  Tranche  A
Commitment  or Total Tranche C Commitment pursuant to this Section 3.02(b)
shall apply to  proportionately increase or decrease, as the  case may be,
the respective Commitment under such Facility of  each Non-Defaulting Bank
with a Commitment under such Facility, (y) no such  reduction shall reduce
any Non-Defaulting Bank's Commitment under such Facility to an amount that
is less than the sum of (A) the outstanding Loans of  such Bank under such
Facility plus, (B) such  Bank's Adjusted Tranche A Percentage  or Adjusted
Tranche C  Percentage, whichever the case  may be, of Tranche  A Letter of
Credit  Outstandings or Tranche C Letter of Credit Outstandings, whichever
the case  may be and (z) any  such reduction and increase  shall reduce or
increase the remaining Scheduled Commitment Reductions under such Facility
pro rata based  on the then remaining amounts of such Scheduled Commitment
Reductions.

          3.03  Mandatory Adjustments of Commitments, etc.  (a)  The Total
Commitment shall terminate on the earlier of (i) the Maturity Date or (ii)
unless the  Required Banks otherwise consent, the date on which any Change
of Control occurs.

          (b)  In  addition to  any other mandatory  commitment reductions
pursuant  to this Section  3.03, on each  date set forth  below, the Total
Commitment shall be permanently  reduced by the amount set  forth opposite
such  date  (each  such  reduction,  as same  may  be  further  reduced in
accordance  with Section 3.02 and 3.03(c) and (d), a "Scheduled Commitment
Reduction")  and  such  reduction shall  be  allocated  to the  respective
Tranches, to the extent of the outstanding Commitments thereunder, accord-
ing to the  Borrowers' election; PROVIDED that in  the event the Borrowers
fail  to make such an  election, each such  Scheduled Commitment Reduction
shall be applied pro rata (based on the then outstanding Commitments under
the respective Tranches) to each Tranche:

                 Date                      Amount         
           ----------------             ------------       
           April 18, 1998               $ 14,000,000      
           October 18, 1998             $ 14,000,000      
           April 18, 1999               $ 14,000,000      
           October 18, 1999             $ 14,000,000      
           April 18, 2000               $ 14,000,000      
           October 18, 2000             $ 14,000,000      
           April 18, 2001               $ 14,000,000      

           Maturity Date             Remaining Amount of 
                                     Total Commitment

          (c)  In addition to  any other  mandatory commitment  reductions
pursuant  to this Section 3.03, on the  Business Day following the date of
receipt  by any Borrower or the  Subsidiary Guarantor of the Cash Proceeds
from any Collateral Disposition, the Total Commitment then in effect shall<PAGE>


be permanently  reduced by an amount  equal to the Total  Commitment as in
effect  on the  Restatement  Effective Date  multiplied by  the percentage
adjacent to  the name of  the Mortgaged Rig  which is the  subject of such
Collateral Disposition under the heading "Percentage Reduction" set  forth
on Annex  IV hereto.  The  reduction to the Total  Commitment described in
the preceding sentence shall be applied to reduce the relative Commitments
under  each Tranche according to the Borrower's election; PROVIDED that if
no such  election is made,  such reduction shall  be applied first  to the
Tranche constituting  the direct  Obligation of  the Person  receiving the
Cash Proceeds from such Collateral Disposition, or, in the case of receipt
by the  Subsidiary Guarantor, Tranche C,  with any remaining amount  to be
applied  pro rata  (based on  the then  outstanding Commitments  under the
remaining Tranches) to each remaining Tranche.

          (d)  Notwithstanding anything to the contrary  contained herein,
and in addition to  any other mandatory commitment reductions  pursuant to
this Section 3.03, in the case of any Collateral Disposition which reduces
the  number of  Collateral Rigs  to below  ten (10),  on the  Business Day
following the date of receipt by any Borrower or the Subsidiary  Guarantor
of  the  Cash Proceeds  from any  such  Collateral Disposition,  the Total
Commitment then in effect  shall be permanently reduced by an amount equal
to  100% of  the Cash  Proceeds received  as a  result of  such Collateral
Disposition.  The relative Commitments  shall be reduced to the extent  of
such  Cash Proceeds according to the Borrower's election, PROVIDED that if
no such election is made, such Cash Proceeds shall be applied first to the
Tranche constituting  the direct Obligation  of the Person  receiving such
proceeds, or, in the case of  receipt by the Subsidiary Guarantor, Tranche
C, with any remaining  amounts to be applied  pro rata (based on  the then
Outstanding Commitments under  the remaining Tranches)  to each  remaining
Tranche.

          (e)  Each reduction of the Total Tranche A Commitment, the Total
Tranche B Commitment,  or the Total Tranche C Commitment  pursuant to this
Section  3.03 shall apply proportionately  to the Commitment  of each Bank
(if  any) under  such  Tranche.   Any  reduction to  the  total Tranche  A
Commitment,  the  Total  Tranche B  Commitment,  or  the  Total Tranche  C
Commitment  pursuant  to  this Section  3.03  shall  reduce the  remaining
Scheduled  Commitment Reductions under such Facility pro rata based on the
then  remaining  amounts of  Scheduled  Commitment  Reductions under  such
Facility.  

          SECTION 4.  PAYMENTS.

          4.01  Voluntary Prepayments.  Each Borrower shall have the right
to prepay Loans in whole or in part, without premium or penalty, from time
to time  on the following terms  and conditions:  (i)  such Borrower shall
give  the Administrative  Agent at  the Notice  Office written  notice (or
telephonic notice promptly confirmed  in writing) of its intent  to prepay
the Loans,  the amount of such  prepayment and (in the  case of Eurodollar
Loans)  the specific Borrowing or Borrowings pursuant to which made, which
notice  shall be given  by such Borrower  at least five  (5) Business Days
prior to the date of such prepayment of Loans, which notice shall promptly
be transmitted  by the Administrative  Agent to each  of the Banks  with a
Commitment under the Tranche  being prepaid; (ii) all payments to  be made
in respect of Pound Sterling Loans shall be made in Pounds Sterling; (iii)
each  partial prepayment  of  any  Borrowing  shall  be  in  an  aggregate
principal amount of at least $2,000,000 (or the number of  Pounds Sterling<PAGE>


which, at the time of such prepayment, would yield a  US Dollar Equivalent
of $2,000,000) and, if greater, in an integral multiple of  $2,000,000 (or
the number of Pounds Sterling which, at the time of such prepayment, would
yield  a US  Dollar Equivalent  of $2,000,000),  PROVIDED that  no partial
prepayment of Eurodollar Loans  made pursuant to a Borrowing  shall reduce
the aggregate principal amount  of the Loans outstanding pursuant  to such
Borrowing  to an  amount  less than  the  Minimum Borrowing  Amount;  (iv)
Eurodollar Loans may only be prepaid  pursuant to this Section 4.01 on the
last day of the Interest  Period applicable thereto; and (v)  each prepay-
ment in respect of any Loans made pursuant to a Borrowing shall be applied
pro  rata among  the Banks  which made  such Loans,  PROVIDED that  at the
respective  Borrower's election in connection with any prepayment of Loans
pursuant to this Section 4.01, such prepayment shall not be applied to any
Loans of a Defaulting Bank. 

          4.02  Mandatory Prepayments.

          (A)  Requirements: 
               ------------
          (a)  (i) If on  any date the  sum of  the aggregate  outstanding
principal  amount of Tranche A Loans made  by Non-Defaulting Banks and the
Tranche A Letter of Credit Outstandings exceeds the Adjusted Total Tranche
A Commitment as then in  effect, Borrower A shall  repay on such date  the
principal  of Tranche  A Loans  of Non-Defaulting  Banks, in  an aggregate
amount equal to such excess.  If,  after giving effect to the repayment of
all  outstanding Tranche  A Loans  of Non-Defaulting Banks,  the aggregate
amount of Letter  of Credit  Outstandings exceeds the  Adjusted Tranche  A
Total  Commitment  then   in  effect,   Borrower  A  shall   pay  to   the
Administrative  Agent an amount in  cash and/or Cash  Equivalents equal to
such excess (up to the  aggregate amount of the Tranche A Letter of Credit
Outstandings  at such time) and  the Administrative Agent  shall hold such
payment as security for  the obligations of Borrower A  hereunder pursuant
to a  cash collateral agreement to  be entered into in  form and substance
reasonably satisfactory to Borrower A and the Administrative Agent  (which
shall  permit  certain investments  in  Cash  Equivalents satisfactory  to
Borrower A and the Administrative Agent, until the proceeds are applied to
the secured obligations).

          (ii) If on  any  date  the  sum  of  the  aggregate  outstanding
principal amount of Tranche  B Loans made by Non-Defaulting  Banks exceeds
the Total Tranche  B Commitment as then in effect,  Borrower B shall repay
on such date the principal  of Tranche B Loans of Non-Defaulting  Banks in
US Dollars or Pounds  Sterling according to the denomination of such Loans
when made to Borrower B, in an aggregate amount equal to such excess. 

          (iii) If  on  any  date the  sum  of  the aggregate  outstanding
principal amount of Tranche  C Loans made by Non-Defaulting  Banks and the
Tranche C Letter of Credit Outstandings exceeds the Adjusted Total Tranche
C Commitment as then in  effect, Borrower C shall  repay on such date  the
principal  of Tranche  C Loans  of Non-Defaulting  Banks, in  an aggregate
amount equal to such excess.  If,  after giving effect to the repayment of
all  outstanding Tranche  C Loans of  Non-Defaulting Banks,  the aggregate
amount of Letter of Credit Outstandings exceeds the Adjusted Total Tranche
C Commitment then in  effect, Borrower C shall  pay to the  Administrative
Agent  an amount in cash and/or Cash  Equivalents equal to such excess (up
to the aggregate amount of the  Tranche C Letter of Credit Outstandings at
such time)  and the Administrative Agent shall  hold such payment as secu-<PAGE>


rity for  the  obligations of  Borrower  C hereunder  pursuant to  a  cash
collateral agreement to be  entered into in form and  substance reasonably
satisfactory to  Borrower  C and  the  Administrative Agent  (which  shall
permit certain investments  in Cash Equivalents satisfactory to Borrower C
and  the Administrative  Agent,  until the  proceeds  are applied  to  the
secured obligations).

          (iv)  If on any date the aggregate outstanding principal  amount
of the  Loans made by a  Defaulting Bank pursuant to  any Facility exceeds
the Commitment of such Defaulting Bank under such Facility, the respective
Borrower under  such Facility shall repay  the principal of such  Loans of
such Defaulting Bank in an amount equal to such excess.

          (b)  Notwithstanding   anything   to   the  contrary   contained
elsewhere in this Agreement, all then outstanding Loans shall be repaid in
full on the Maturity Date.

          (c)  On the date on  which any Change of Control  occurs, unless
otherwise agreed by the  Required Banks, the outstanding  principal amount
of all Loans, if any, shall become due and payable in full.

          (B)  Application:
               -----------
          With  respect to each  prepayment of  Loans required  by Section
4.02, the prepaying Borrower may designate the Types of Loans which are to
be  prepaid and  the specific  Borrowing or  Borrowings pursuant  to which
made,  PROVIDED that (i)  Eurodollar Loans may  only be repaid  if no Base
Rate Loans of  Non-Defaulting Banks  pursuant to  the respective  Facility
remain outstanding;  (ii)  if  any  prepayment of  Eurodollar  Loans  made
pursuant to a  single Borrowing  shall reduce the  outstanding Loans  made
pursuant to  such Borrowing to an  amount less than  the Minimum Borrowing
Amount for such  Borrowing, such Borrowing shall  be immediately converted
into Base Rate Loans; and (iii) each  prepayment of any Loans made by Non-
Defaulting Banks pursuant to a  Borrowing shall be applied pro rata  among
the  Non-Defaulting Banks  which made  such Loans.   In  the absence  of a
designation by such Borrower  as described in the preceding  sentence, the
Administrative Agent shall, subject to the above, make such designation in
its sole discretion  with a view, but no obligation,  to minimize breakage
costs  owing under Section 1.11.  Notwithstanding the foregoing provisions
of this Section 4.02(B), if at any time the mandatory  prepayment of Loans
pursuant to Section 4.02(A) above would result, after giving effect to the
procedures set forth above, in any Borrower incurring breakage costs under
Section  1.11 as a result of Eurodollar  Loans being prepaid other than on
the  last  day of  an Interest  Period  applicable thereto  (the "Affected
Eurodollar  Loans"),  then  such  Borrower  may  in  its  sole  discretion
initially deposit a  portion (up to  100%) of the  amounts that  otherwise
would have been paid in respect  of the Affected Eurodollar Loans with the
Administrative Agent (which  deposit must be equal in amount to the amount
of the  Affected Eurodollar Loans not  immediately prepaid) to be  held as
security for the obligations of such Borrower hereunder pursuant to a cash
collateral agreement to be  entered into in form and  substance reasonably
satisfactory  to  such Borrower  and  the Administrative  Agent  and shall
provide for  investments satisfactory to the Administrative Agent and such
Borrower, with such cash  collateral to be directly applied upon the first
occurrence  (or occurrences)  thereafter of  the last  day of  an Interest
Period applicable to the relevant Loans that are Eurodollar Loans (or such
earlier date or dates as shall be requested by such Borrower), to repay an<PAGE>


aggregate  principal amount of such Loans equal to the Affected Eurodollar
Loans not  initially prepaid pursuant  to this sentence.   Notwithstanding
anything  to the contrary contained in the immediately preceding sentence,
all  amounts  deposited as  cash  collateral pursuant  to  the immediately
preceding sentence shall  be held for the sole benefit  of the Banks whose
Loans would  otherwise  have been  immediately  prepaid with  the  amounts
deposited and upon the taking of any action by the Administrative Agent or
the Banks pursuant to  the remedial provisions  of Section 9, any  amounts
held as cash collateral pursuant to this Section 4.02(B) shall, subject to
the  requirements of applicable law,  be immediately applied  to the Loans
made by such Borrower.

          4.03  Method  and  Place  of  Payment.    Except  as   otherwise
specifically provided herein,  all payments under this  Agreement shall be
made to  the Administrative Agent for  the ratable (based on  its pro rata
share) account  of the Banks entitled  thereto, not later than  10:00 A.M.
(New York  time) (or  in the  case of  payments made  in respect of  Pound
Sterling Loans, 11:00 A.M. London time) on the date when  due and shall be
made in  immediately available  funds and in  lawful money  of the  United
States of America (or  of the United Kingdom in the  case of payments made
in respect of  Pound Sterling Loans) at the  US Payment Office (or  in the
case of  payments made  in  respect of  Pound Sterling  Loans,  at the  UK
Payment Office), it being understood that written notice from any Borrower
to  the Administrative  Agent to  make a  payment from  the funds  in such
Borrower's  account  at the  respective US  Payment  Office or  UK Payment
Office shall constitute  the making of such payment to  the extent of such
funds held in such account.   Any payments under this Agreement  which are
made later than  10:00 A.M. (New  York time) (or in  the case of  payments
made in respect  of Pound Sterling Loans 11:00 A.M.  London time) shall be
deemed to  have been made on  the next succeeding Business  Day.  Whenever
any payment to be made hereunder shall be stated  to be due on a day which
is not a Business Day,  the due date thereof shall be extended to the next
succeeding  Business  Day  and,  with respect  to  payments  of principal,
interest shall be payable during such extension at  the applicable rate in
effect immediately prior to such extension.

          4.04  Net  Payments.  (a)  All  payments made  by  each Borrower
hereunder or under  any Note will be made without  setoff, counterclaim or
other defense.   Except as provided  in Section 4.04(b) and  (c), all such
payments will  be  made  free  and clear  of,  and  without  deduction  or
withholding for,  any present  or future  taxes, levies,  imposts, duties,
fees, assessments or  other charges  of whatever nature  now or  hereafter
imposed  by any  jurisdiction or  by any  political subdivision  or taxing
authority thereof or therein with respect to such payments (but excluding,
except as provided in the  second succeeding sentence, any tax imposed  on
or measured by the  net income or  net profits of a  Bank pursuant to  the
laws of  the  jurisdiction  in  which  it  is  organized  or  managed  and
controlled or the jurisdiction in which the principal office or applicable
lending  office of  such Bank  is located  or any  subdivision thereof  or
therein) and all  interest, penalties or similar  liabilities with respect
thereto  (all  such non-excluded  taxes,  levies,  imposts, duties,  fees,
assessments or  other charges being referred to  collectively as "Taxes").
If  any Taxes are so  levied or imposed,  each Borrower agrees  to pay the
full amount of such Taxes, and such additional  amounts, if any, as may be
necessary so that every payment of all amounts due under this Agreement or
under any  Note, after withholding or  deduction for or on  account of any
Taxes, will  not be less  than the amount  provided for herein or  in such<PAGE>


Note.  If  any amounts are  payable by  any Borrower in  respect of  Taxes
pursuant to the preceding sentence, such Borrower agrees to reimburse each
Bank,  upon the  written request  of such  Bank, for  taxes imposed  on or
measured by the  net income or net  profits of such  Bank pursuant to  the
laws  of  the jurisdiction  in which  the  principal office  or applicable
lending office  of such Bank is located or under the laws of any political
subdivision  or taxing  authority of  any such  jurisdiction in  which the
principal office or applicable lending office of such Bank is located  and
for any  withholding of taxes as such Bank shall determine are payable by,
or  withheld from, such Bank in  respect of such amounts so  paid to or on
behalf of such  Bank pursuant to the preceding sentence  and in respect of
any amounts paid to  or on behalf of such Bank  pursuant to this sentence.
Such  Borrower will  furnish to  the Administrative  Agent within  45 days
after the date  the payment of any Taxes is due pursuant to applicable law
certified copies of tax receipts evidencing such payment by such Borrower.
Such  Borrower  agrees  to indemnify  and  hold  harmless  each Bank,  and
reimburse such Bank upon its written  request, for the amount of any Taxes
so levied or imposed and paid by such Bank.

          (b)  Each Bank  that is not a United States person (as such term
is defined  in Section 7701(a)(30) of  the Code) agrees to  deliver to the
Borrowers and the  Administrative Agent on  or prior to  the date of  this
Agreement,  or in the case of a Bank  that is an assignee or transferee of
an interest under this Agreement pursuant to Section 1.13 or 12.04 (unless
the respective Bank was already a Bank hereunder immediately prior to such
assignment or  transfer), on  the date of  such assignment or  transfer to
such Bank,  (i) two (2)  accurate and  complete original signed  copies of
Internal Revenue Service Form 4224 or 1001 (or successor forms) certifying
to  such Bank's  entitlement to  a complete  exemption from  United States
withholding tax with  respect to payments to be  made under this Agreement
and under any Note, or (ii) if the Bank is not a "bank" within the meaning
of Section 881(c)(3)(A)  of the  Code and cannot  deliver either  Internal
Revenue Service  Form 1001  or 4224  pursuant to  clause (i)  above, (x) a
certificate  substantially in the form of Exhibit D (any such certificate,
a "Section 4.04(b)(ii) Certificate") and (y) two (2) accurate and complete
original  signed copies of Internal Revenue Service Form W-8 (or successor
form) certifying to such  Bank's entitlement to a complete  exemption from
United States withholding  tax with respect to payments of  interest to be
made under  this Agreement and  under any  Note.  In  addition, each  Bank
agrees  that from time to  time after the  date of this  Agreement, when a
lapse  in  time  or change  in  circumstances  renders  the previous  cer-
tification obsolete or inaccurate in any material respect, it will deliver
to the Borrowers  and the  Administrative Agent two  (2) new accurate  and
complete original signed copies  of Internal Revenue Service Form  4224 or
1001, or Form W-8 and  a Section 4.04(b)(ii) Certificate, as the  case may
be, and such other forms  as may be required in order to confirm or estab-
lish the  entitlement  of  such Bank  to  a continued  exemption  from  or
reduction  in United States withholding tax with respect to payments under
this Agreement and any Note, or  it shall immediately notify the Borrowers
and the Administrative  Agent in writing of  its inability to deliver  any
such Form or Certificate.   Notwithstanding anything to the  contrary con-
tained  in  Section  4.04(a), but  subject  to  Section  12.04(b) and  the
immediately succeeding  sentence, (x) the Borrowers shall  be entitled, to
the extent they are required to do so by law, to deduct or withhold income
or similar taxes  imposed by the United States (or  any political subdivi-
sion or taxing authority thereof or therein) from  interest, fees or other
amounts  payable hereunder  for the  account of  any Bank  which is  not a<PAGE>


United  States person (as  such term is defined  in Section 7701(a)(30) of
the Code)  for U.S. Federal  income tax purposes  to the extent  that such
Bank has not provided to the Borrowers U.S. Internal Revenue Service Forms
that establish a complete exemption from such deduction or withholding and
(y) the  Borrowers shall  not  be obligated  pursuant  to Section  4.04(a)
hereof to gross-up  payments to be made to a Bank  in respect of income or
similar taxes  imposed by  the  United States  if (I)  such  Bank has  not
provided to the Borrowers  the Internal Revenue Service Forms  required to
be provided to the Borrowers  pursuant to this Section 4.04(b) or  (II) in
the case of a payment, other than interest, to  a Bank described in clause
(ii) above,  to the  extent that  such Forms do  not establish  a complete
exemption from withholding of such taxes.  Notwithstanding anything to the
contrary  contained in the preceding sentence or elsewhere in this Section
4.04 and except  as set forth in Section 12.04(b),  the Borrowers agree to
pay additional  amounts and to indemnify each Bank in the manner set forth
in Section 4.04(a)  (without regard  to the identity  of the  jurisdiction
requiring the deduction or withholding) in respect of any amounts deducted
or withheld  by it as described in the immediately preceding sentence as a
result  of any changes after the date  of this Agreement in any applicable
law,  treaty, governmental rule, regulation, guideline or order, or in the
interpretation thereof, relating to the deducting or withholding of income
or similar  Taxes, PROVIDED such Bank  shall provide to the  Borrowers and
the Administrative Agent  any applicable IRS tax  form (reasonably similar
in  its  simplicity and  lack of  detail to  IRS  Form 1001)  necessary or
appropriate  for the  exemption  or reduction  in  the rate  of  such U.S.
Federal withholding tax.

          (c)  Each Bank shall make all filings that are required to apply
to  the U.K.  Inland Revenue  Service under  the relevant  Double Taxation
Agreements for relief from  U.K. withholding taxes in connection  with the
Tranche B Facility.  In the event  that such relief is not obtained  prior
to  the first interest payment date and  payment of U.K. withholding taxes
is required  because of the absence  of such relief, the  Banks shall take
such action as is necessary to insure that no such withholding tax will be
due.

          (d)  The provisions of  this Section  4.04 shall  be subject  to
Section 1.12(b) (to the extent applicable).

          SECTION 5.  CONDITIONS  PRECEDENT.  The obligation  of the Banks
to make  each Loan hereunder, and  the obligation of the  Letter of Credit
Issuer  to  issue  Letters   of  Credit  hereunder,  is  subject   to  the
satisfaction of each of the following conditions:

          5.01  Execution of Agreement.  On  or prior  to the  Restatement
Effective  Date,  there shall  have been  delivered to  the Administrative
Agent for the  account of each Bank the appropriate  Notes executed by the
respective  Borrowers, in  each  case  in  the  amount,  maturity  and  as
otherwise provided herein.

          5.02  No  Default; Representations and  Warranties.  At the time
of each Credit Event and also after giving effect thereto, (i) there shall
exist no  Default or  Event of  Default and (ii)  all representations  and
warranties contained herein or  in the other Credit Documents in effect at
such time shall be true and correct in all material respects with the same
effect as though such representations and warranties had  been made on and
as  of the  date  of such  Credit Event  (except to  the extent  that such<PAGE>


representations and warranties  expressly relate  to an  earlier date,  in
which case they shall be  true and correct in all material  respects as of
such earlier date).

          5.03  No  Default  Under   Existing  Credit  Agreement.  On  the
Restatement Effective Date, there  shall not exist any "Event  of Default"
(as  defined in  the Existing  Credit Agreement)  or any  situation which,
given the  passage of  time, would  result in such  an "Event  of Default"
under the Existing Credit Agreement.

          5.04  Opinions of  Counsel.  On the Restatement  Effective Date,
the  Administrative Agent shall  have received opinions,  addressed to the
Administrative  Agent  and each  of the  Banks  and dated  the Restatement
Effective Date, from (i) Robert Isaac, Esq., General Counsel to the Credit
Parties, which opinion shall  cover the matters contained in  Exhibit E-1,
(ii)  White &  Case, special  counsel to  the Administrative  Agent, which
opinion shall cover  the matters contained in  Exhibit E-2 and (iii)  from
local  counsel   satisfactory  to   the   Administrative  Agent   as   the
Administrative Agent may request,  which opinions shall cover  the perfec-
tion  of the security interests granted pursuant to the Security Documents
and such other matters incident to the transactions contemplated herein as
the Administrative Agent  may reasonably request and shall be  in form and
substance satisfactory to the Administrative Agent.

          5.05  Secretary  Certificate;   Corporate  Proceedings.  On  the
Restatement Effective  Date, the Administrative Agent  shall have received
from  each Credit  Party a  certificate, dated  the Restatement  Effective
Date,  signed  by the  Secretary  of  such Credit  Party  in  the form  of
Exhibit F with appropriate insertions and deletions, together with  copies
of  the certificate  of formation,  the  by-laws, or  other organizational
documents  of such  Credit  Party  and  the  resolutions,  or  such  other
administrative  approval,  of  such  Credit  Party  referred  to  in  such
certificate and all of  the foregoing (including each such  certificate of
formation, certificate  of incorporation and by-laws)  shall be reasonably
satisfactory to the Administrative Agent.

          5.06   Fees.  On  the Restatement Effective  Date, each Borrower
shall have  paid to the  Administrative Agent and  the Banks all  Fees and
expenses agreed upon by such parties to be paid on or prior to such date.

          5.07  Security Agreement.  (a) On the Restatement Effective Date
each  Borrower  shall  have  duly  authorized,  executed and  delivered  a
Security Agreement  relating to the Earnings Collateral  and the Insurance
Collateral in the form of Exhibit G, with such changes (or with such other
documents) as may be requested by the Collateral  Agent in connection with
local law  (as modified,  amended  or supplemented  from time  to time  in
accordance with  the terms thereof  and hereof, the  "Security Agreement")
covering all of the Security Agreement Collateral together with:

          (i)  executed copies of Financing Statements  (Form UCC-1 and/or
     UCC-3) or appropriate local equivalent in appropriate form for filing
     under the UCC or appropriate local equivalent of each jurisdiction as
     may  be necessary to perfect  the security interests  purported to be
     created by the Security Agreement;

         (ii)  certified copies  of  Requests  for Information  or  Copies
     (Form UCC-11), or equivalent  reports, each of a recent  date listing<PAGE>


     all  effective  financing statements  that name  any Credit  Party as
     debtor and that are filed in the jurisdictions referred to  in clause
     (i) above, together with copies of such financing statements (none of
     which shall cover  the Collateral  except (x) those  with respect  to
     which appropriate  termination  statements executed  by  the  secured
     lender thereunder have been delivered to the Collateral Agent and (y)
     to the extent evidencing Permitted Liens); and

        (iii)  evidence that all other recordings and filings  of, or with
     respect to, the Security  Agreement, and all other actions, as may be
     necessary  or, in the opinion  of the Collateral  Agent, desirable to
     perfect the security interests intended to be created by the Security
     Agreement have  been completed  (it being  agreed that UCC  financing
     statements  and   termination  statements  shall  be   filed  in  the
     appropriate governmental office within three (3) Business Days  after
     the Restatement Effective Date); 

and the Security Agreement and such other documents shall be in full force
and effect.

          (b)  On the Restatement Effective Date, ENSCO Offshore U.K. Ltd.
shall have duly authorized, executed and delivered the Floating Charge.

          5.08  Mortgages.  (a)  On the Restatement  Effective Date,  each
Borrower shall  have duly authorized, executed and delivered the following
document or  documents to which  it is  a party (as  modified, amended  or
supplemented from time  to time in accordance  with the terms thereof  and
hereof, the "Mortgages"):

         (i) with respect to  the US Rigs,  substantially in  the form  of
     Exhibit H-1 (as amended,  modified or supplemented from time  to time
     in  accordance with  the  terms hereof  and  thereof, the  "US  Fleet
     Mortgage");

        (ii) with respect to the Bahamian Rigs,  substantially in the form
     of Exhibit H-2  (as amended,  modified or supplemented  from time  to
     time in accordance with  the terms hereof and thereof,  the "Bahamian
     Mortgage");

       (iii) with respect to the Liberian Rigs,  substantially in the form
     of Exhibit H-3  (as amended,  modified or supplemented  from time  to
     time in accordance with  the terms hereof and thereof,  the "Liberian
     Fleet Mortgage"); and

          (b)  On the Restatement Effective  Date, all actions  necessary,
desirable or  otherwise reasonably requested  by the  Collateral Agent  to
provide  the Collateral  Agent with  a  perfected first  priority security
interest in all Collateral purported to  be covered by the Mortgages shall
have been taken.

          5.09  Evidence of Lien, etc.  On the Restatement Effective Date,
the Administrative  Agent shall have received evidence that the respective
Mortgages have  been registered with the  appropriate vessel documentation
authorities so as to create the intended lien on such Collateral.<PAGE>


          5.10  Insurance  Report.    On  or  prior  to  the   Restatement
Effective Date,  the Administrative Agent  shall have received  an opinion
from  Aon Natural  Resources  Worldwide in  the  Form of  Exhibit  I, with
respect to the  adequacy of the insurance  maintained by the  Borrowers in
connection with the Mortgaged Rigs.

          5.11  Pledge  Agreement.   On  the Restatement  Effective  Date,
ENSCO  Delaware, Inc. shall have duly authorized, executed and delivered a
Pledge Agreement  in the form of  Exhibit J (as  modified, supplemented or
amended  from time  to  time,  the  "Pledge  Agreement")  and  shall  have
delivered  to  the Collateral  Agent, as  Pledgee,  all the  Pledged Stock
referred  to therein  then owned  by ENSCO  Delaware, Inc.,  together with
executed and undated stock powers relating to such Pledged Stock.

          5.12 Subsidiary  Guaranty.  On  the Restatement  Effective Date,
the  Subsidiary  Guarantor  shall  have  duly  authorized,  executed   and
delivered a Subsidiary  Guaranty in the  form of  Exhibit K (as  modified,
amended or  supplemented from time  to time in  accordance with  the terms
hereof  and  thereof,  the  "Subsidiary  Guaranty"),  and  the  Subsidiary
Guaranty shall be in full force and effect.

          5.13   Existing Credit Agreement.  On  the Restatement Effective
Date  concurrently with the incurrence  of Loans hereunder,  (i) all loans
under  the Existing Credit Agreement shall be converted, together with all
accrued  interest  and fees  thereon, into  Loans  pursuant to  Tranche A,
Tranche B or Tranche C according to the respective Borrower of record with
respect  to such loans being  converted, with the  Interest Periods appli-
cable to any Eurodollar Loans resulting from  such conversion to remain in
effect as though such  Loans had originally been maintained  as Eurodollar
Loans under the respective Tranche of this Agreement, (ii) all Letters  of
Credit issued thereunder shall  be assumed as Letters of  Credit hereunder
and  (iii) all  other  amounts  owing  pursuant  to  the  Existing  Credit
Agreement shall be carried  forward and become owing under  this Agreement
in accordance with the terms hereof.

          All of the certificates, legal  opinions and other documents and
papers referred to in this Section 5, unless otherwise specified, shall be
delivered to the Administrative Agent at its Notice Office for the account
of each of the Banks and, except for the Notes, in sufficient counterparts
or copies for  each of the  Banks and  shall be satisfactory  in form  and
substance to the Administrative Agent.

          SECTION  6.  REPRESENTATIONS,   WARRANTIES  AND  AGREEMENTS.  In
order to  induce the Banks  to enter into  this Agreement and to  make the
Loans  and  issue and/or  participate in  Letters  of Credit  provided for
herein, each of Holdings, the Parent and the Borrowers make  the following
representations  and warranties to, and agreements with, the Banks, all of
which shall survive the execution and  delivery of this Agreement and  the
making of the Loans (with the making of each Credit Event thereafter being
deemed  to  constitute a  representation  and  warranty that  the  matters
specified in  this Section 6 are true and correct in all material respects
on and as of the date of each such Credit Event unless such representation
and warranty expressly indicates that it  is being made as of any specific
date, in which case  such representations and warranties shall be true and
correct in all material respects as of such date):<PAGE>


          6.01  Corporate Status.  Each Credit Party (i) is a duly  organ-
ized and  validly existing corporation in good  standing under the laws of
the  jurisdiction  of its  organization and  has  the corporate  power and
authority  to own its property and assets  and to transact the business in
which it is engaged, except in  such case where the failure to be  so duly
organized and validly existing in good standing and to have such corporate
power  and authority  (x)  is not  reasonably  likely to  have a  Material
Adverse Effect and (y) is not reasonably likely to have a material adverse
effect on the  rights or remedies  of the Banks or  on the ability  of any
Credit Party to perform  its obligations to them  hereunder and under  the
other Credit Documents to which it is a party, and (ii) has duly qualified
and is  authorized to do  business and is in  good standing in  all juris-
dictions where it is required to be so qualified and where  the failure to
be so qualified would have a Material Adverse Effect.

          6.02  Corporate  Power and Authority.  Each Credit Party has the
corporate power and authority to execute, deliver  and carry out the terms
and provisions  of the Credit  Documents to  which it is  a party and  has
taken all necessary corporate action to  authorize the execution, delivery
and  performance of  the Credit  Documents to  which it  is a  party. Each
Credit Party has duly executed and delivered each Credit Document to which
it  is a party and each such  Credit Document constitutes the legal, valid
and  binding obligation  of  such Credit  Party  enforceable against  such
Person  in  accordance with  its  terms, except  to  the  extent that  the
enforceability  thereof may  be limited  by applicable  bankruptcy, insol-
vency, reorganization,  moratorium  or similar  laws  generally  affecting
creditors'  rights  and by  equitable  principles  (regardless of  whether
enforcement is sought in equity or at law).

          6.03  No   Violation.  Neither   the  execution,   delivery  and
performance by any Credit Party of the  Credit Documents to which it is  a
party  nor compliance  with  the terms  and  provisions thereof,  nor  the
consummation of the transactions contemplated therein (i) will  contravene
any  applicable provision  of any law,  statute, rule,  regulation, order,
writ, injunction or decree of any court or governmental instrumentality of
the United States or any State thereof, or, to  the extent relating to the
security interest granted  by the  Bahamian Mortgages  and Liberian  Fleet
Mortgage, the Bahamas  or Liberia  respectively, (ii) will  result in  any
breach of any  of the terms,  covenants, conditions  or provisions of,  or
constitute  a default  under,  or (other  than  pursuant to  the  Security
Documents) result in  the creation or imposition of  (or the obligation to
create or impose) any Lien upon any of the property or assets of Holdings,
the  Borrowers or  any of  their respective  Subsidiaries pursuant  to the
terms  of, any material indenture,  mortgage, deed of  trust, agreement or
other  instrument to  which  Holdings,  the  Borrowers  or  any  of  their
respective Subsidiaries is a  party or by which it or  any of its property
or assets are bound or  to which it is  subject or (iii) will violate  any
provision  of the Certificate of Incorporation or By-Laws of Holdings, the
Borrowers or any of their respective Subsidiaries.

          6.04  Litigation.  Except as otherwise disclosed in ENSCO's 10-Q
filing with the  U.S. Securities  and Exchange Commission  for the  period
ended  September  30, 1996,  there are  no  actions, suits  or proceedings
pending or, to the best knowledge of Holdings, the Parent or the Borrowers
threatened  with  respect  to Holdings,  the  Borrowers  or  any of  their
respective Subsidiaries (i)  that are  likely to have  a Material  Adverse
Effect or  (ii) that  are  reasonably likely  to have  a material  adverse<PAGE>


effect on  the rights or remedies  of the Banks  or on the ability  of any
Credit Party to  perform its obligations  to them hereunder and  under the
other Credit Documents to which it is a party.

          6.05  Use of Proceeds; Margin Regulations.  (a)  The proceeds of
all Loans shall be utilized to provide  for the general corporate purposes
of the Borrowers and their respective Subsidiaries.

          (b)  Neither  the making of any  Loan hereunder, nor  the use of
the  proceeds thereof, will violate or be inconsistent with the provisions
of  Regulation G,  T, U  or X  of the  Board of  Governors of  the Federal
Reserve  System and no  part of the proceeds  of any Loan  will be used to
purchase  or carry  any Margin Stock  in violation  of Regulation  U or to
extend credit for the purpose of purchasing or carrying any Margin Stock.

          6.06  Governmental Approvals.  Except for the  orders, consents,
approvals,    licenses,     authorizations,    validations,    recordings,
registrations  and exemptions that have already been duly made or obtained
and remain in full force and effect, no order, consent, approval, license,
authorization, or  validation of, or filing (other than the filing of Form
UCC-1 Financing  Statements or  the  appropriate equivalents,  which  such
filing, if this representation is being made more than ten (10) days after
the Restatement Effective Date, has  been made), recording or registration
with, or exemption by, any foreign or domestic governmental or public body
or authority, or any  subdivision thereof, is required to  authorize or is
required in connection with (i) the execution, delivery and performance of
any  Credit Document  or (ii)  the legality,  validity, binding  effect or
enforceability of any Credit Document.

          6.07  Investment Company  Act.  None of the Borrowers  or any of
their  respective Subsidiaries  is an  "investment company"  or  a company
"controlled"  by  an  "investment  company," within  the  meaning  of  the
Investment Company Act of 1940, as amended.

          6.08  True  and  Complete   Disclosure.  No  representation   or
warranty contained in  this Agreement  and no statement  contained in  any
certificate, schedule,  list,  financial  statement  or  other  instrument
furnished by or on behalf of Holdings, the Parent, the Borrowers or any of
their  respective Subsidiaries  to the  Administrative  Agent or  any Bank
contains  any untrue  statement of  material fact,  PROVIDED that  where a
representation  or  warranty  is  made  as  of  a  particular  date,  such
representation or warranty shall only  be required to be true  and correct
as of such date.

          6.09  Financial Condition; Financial Statements.  (a)  On and as
of the  Restatement Effective  Date,  on a  pro forma  basis after  giving
effect  to  all  Indebtedness incurred,  and  to  be  incurred, and  Liens
created, and to be created, by Holdings and its Subsidiaries in connection
therewith, (x) the sum of the assets, at a fair valuation, of Holdings and
its Subsidiaries taken as a whole  will exceed its debts, (y) Holdings and
its Subsidiaries taken as a  whole will not have incurred or  intended to,
or believe  that they will, incur  debts beyond their ability  to pay such
debts as such debts mature and  (z) Holdings and its Subsidiaries taken as
a whole will  not have  unreasonably small capital  with which to  conduct
their business.  <PAGE>


          (b) (i)  The  consolidated balance  sheet  of Holdings  and  its
Subsidiaries at September 30, 1996 and the related consolidated statements
of  operations and  cash flows  of Holdings and  its Subsidiaries  for the
fiscal year,  as the  case may be,  ended as  of said  date, and (ii)  the
consolidated  balance  sheet  of  Holdings  and  its  Subsidiaries  as  of
September 30, 1996, copies of which have heretofore been furnished to each
Bank, present fairly the financial position of such entities  at the dates
of  said statements  and the  results  for the  period covered  thereby in
accordance with GAAP, except to  the extent provided in the notes  to said
financial statements and,  in the  case of the  September 30, 1996  state-
ments, subject to  normal and  recurring year-end audit  adjustment.   All
such financial statements have  been prepared in accordance with  GAAP and
practices  consistently applied except to the extent provided in the notes
to  said  financial statements.   As  of  the Restatement  Effective Date,
nothing has occurred since December 31, 1995 that has had or is reasonably
likely to have a Material Adverse Effect.

          6.10  Tax Returns and Payments.  Each Credit Party has filed all
federal  income tax returns and  all other material  tax returns, domestic
and foreign, required  to be filed by  it and has paid  all material taxes
and assessments  payable by it which have become due, other than those not
yet delinquent and except for those contested in good faith.   Each Credit
Party has paid, or has provided adequate reserves with respect thereto, in
accordance with  GAAP, for the payment of,  all federal, state and foreign
income taxes  applicable for all  prior fiscal years  and for the  current
fiscal year to the date hereof.

          6.11  Compliance with  ERISA.  No Reportable  Event has occurred
and is continuing with respect to any Plan.

          6.12  Subsidiaries.  Annex V lists  each Subsidiary of  Holdings
(and  the direct and indirect ownership interest of Holdings therein), and
indicates  which  of such  Subsidiaries  are  Restricted Subsidiaries  for
purposes  of  this Agreement,  in each  case  existing on  the Restatement
Effective Date. 

          6.13  Patents, etc.  Each Credit Party has obtained all material
patents, trademarks, service marks, trade names, copyrights, licenses  and
other  rights, free from  burdensome restrictions, that  are necessary for
the operation of their businesses taken as a whole as presently conducted.

          6.14  Pollution  and  Other Regulations.  (a)  Each  of Holdings
and its Consolidated  Subsidiaries is in  substantial compliance with  all
applicable Environmental  Laws governing its business for which failure to
comply is  reasonably  likely to  have  a Material  Adverse Effect.    All
licenses,  permits, registrations  or approvals  required to  preserve the
ownership and operation  of the drilling rigs of Holdings  and each of its
Consolidated Subsidiaries  under any Environmental Law  have been secured.
Neither Holdings  nor any of its  Consolidated Subsidiaries is in  any re-
spect in noncompliance with,  breach of or default under any  writ, order,
judgment,  injunction, or decree  to which  Holdings or  such Consolidated
Subsidiary is a  party or which  would affect the  ability of Holdings  or
such Consolidated Subsidiary to  own or operate any offshore  drilling rig
and  no event has  occurred and is  continuing which, with  the passage of
time  or the  giving of  notice or  both, would  constitute noncompliance,
breach  or default thereunder, except  in each such  case, such noncompli-
ance, breaches  or defaults  as  are not  likely to  adversely affect  the<PAGE>


ownership or operation  of any offshore drilling rig.  There are as of the
Restatement Effective Date no Environmental Claims pending or, to the best
knowledge of Holdings,  the Parent and the Borrowers,  threatened, against
Holdings or any  of its Consolidated  Subsidiaries wherein an  unfavorable
decision, ruling or finding would be reasonably likely to adversely affect
the ownership or operation of any offshore drilling rig.

          (b)  Hazardous Materials have not  at any time been released  on
or from any offshore  drilling rig or vessel at any time owned or operated
by  Holdings or any of its Consolidated  Subsidiaries, in each case where,
to the best  of Holdings', the Parent's or the  Borrowers' knowledge, such
occurrence  or event individually or in the aggregate is reasonably likely
to have a Material Adverse Effect.

          6.15  Properties.  (a)     The  Borrowers  and  each   of  their
respective Subsidiaries has title to all material properties  constituting
Collateral owned  by them, free and clear of  all Liens, other than (i) as
referred to in the consolidated  balance sheet or in the notes  thereto or
(ii) Permitted Liens.

          (b)   Annex  VI  sets forth  all  the  Mortgaged  Rigs owned  by
Holdings and each of  its Subsidiaries on the Restatement  Effective Date,
and identifies the registered  owner, flag, official or patent  number, as
the case  may be, the  home port  and class on  the Restatement  Effective
Date.

          6.16  Citizenship.    The Borrowers  are  qualified  to own  and
operate  the  Mortgaged Rigs  under  the laws  of the  United  States, the
Bahamas and Liberia, as may be applicable.

          6.17  Rig Classification.   Each Mortgaged Rig  is classified in
the highest class available for  rigs or vessels of its age and  type with
the  American   Bureau  of  Shipping,  Inc.   or  another  internationally
recognized classification society reasonably  acceptable to the Collateral
Agent or the Security  Trustee, as the case  may be, free of any  material
outstanding requirements or recommendations, other than as permitted under
the Mortgage relating thereto.

          SECTION 7.  AFFIRMATIVE COVENANTS.  Holdings, the Parent and the
Borrowers  covenant and agree that  on the Restatement  Effective Date and
thereafter  for so  long as  this Agreement  is in  effect (and  until all
Commitments have terminated, no Letters of Credit or Notes are outstanding
and the Loans and  Unpaid Drawings, together with  interest, Fees and  all
other Obligations incurred hereunder, are paid in full):

          7.01  Information Covenants.  Holdings and/or the Borrowers will
furnish to each Bank:

          (a)  Annual  Financial Statements.  Within  90  days  after  the
     close of each fiscal year of Holdings, the consolidated balance sheet
     of Holdings and its Consolidated Subsidiaries, as at the  end of such
     fiscal year and the related consolidated statements of operations and
     of cash  flows for  such  fiscal year,  in  each case  setting  forth
     comparative consolidated  figures for the preceding  fiscal year, and
     examined by  independent certified  public accountants  of recognized
     national standing whose opinion shall be in accordance with generally
     accepted  auditing standards  and shall  not be  qualified as  to the<PAGE>


     scope of audit and as to the status of Holdings  and its Consolidated
     Subsidiaries  as  a  going  concern.    Together  with the  financial
     statements  required to be delivered above, Holdings or the Borrowers
     shall deliver  to the  Administrative Agent  and the Banks  analogous
     statements of operations and cash flows,  on a stand alone basis, for
     any Unrestricted  Subsidiary, which statements will  include, without
     limitation, line items relating to all Non-Recourse Indebtedness.  

          (b)  Quarterly  Financial Statements.  As soon  as available and
     in  any event within  45 days  after the close  of each of  the first
     three  (3) quarterly  accounting  periods in  each  fiscal year,  the
     consolidated   balance  sheet  of   Holdings  and   its  Consolidated
     Subsidiaries, as at the end of such quarterly period and  the related
     consolidated  statements of  operations and  of cash  flows for  such
     quarterly period and for the elapsed portion of the fiscal year ended
     with the  last day  of such  quarterly period,  in each  case setting
     forth comparative  consolidated figures for the related period in the
     prior fiscal year, all of which shall be unaudited,  but certified by
     the chief financial  officer or  controller of  Holdings, subject  to
     changes resulting  from audit and normal  year-end audit adjustments.
     Together  with  the financial  statements  required  to be  delivered
     above, Holdings or  the Borrowers shall deliver to the Administrative
     Agent  and the  Banks  analogous statements  of  operations and  cash
     flows, on a stand alone basis, for any Unrestricted Subsidiary, which
     statements will  include, without limitation, line  items relating to
     all Non-Recourse Indebtedness.   

          (c)  Rig Status Report.   As soon as available and in  any event
     within 45 days after the close  of each fiscal quarter of Holdings, a
     report (in  form satisfactory to the  Administrative Agent) detailing
     (i) the then current location of each of the Mortgaged Rigs, (ii) the
     then current  term of  and parties  to any  contract of any  offshore
     drilling rig or vessel owned by  Holdings or any of its Subsidiaries,
     and  (iii) the average  day rate  for each  offshore drilling  rig or
     vessel owned by Holdings or any of its Subsidiaries for the preceding
     fiscal quarter.

          (d)  Forecast; etc.  Prior to the beginning of each fiscal  year
     of Holdings, a forecast  which includes an income statement  and cash
     flow statement of  Holdings and its Consolidated Subsidiaries for the
     upcoming fiscal year,  including a breakdown  of revenues,  operating
     expenses and utilizations for each  offshore drilling rig and  vessel
     owned or leased by Holdings and its Consolidated Subsidiaries.

          (e)  Compliance  Certificate.  Prior to  or at  the time  of the
     delivery of the financial statements provided for in Sections 7.01(a)
     and  (b), a  certificate of  Holdings signed  by its  chief financial
     officer,  controller  or other  Authorized  Officer  in  the form  of
     Exhibit L  to the effect that  no Default or Event  of Default exists
     or, if any  Default or Event  of Default  does exist, specifying  the
     nature and  extent  thereof, which  certificate shall  set forth  the
     calculations required to establish whether Holdings and its  Subsidi-
     aries were in  compliance with the provisions of Section  8 as at the
     end of such fiscal period or year, as the case may be.

          (f)  Notice  of Default  or  Litigation.  Promptly, and  in  any
     event  within (x) three (3) Business Days after an Authorized Officer<PAGE>


     of Holdings, the  Parent or any  Borrower obtains knowledge  thereof,
     notice of the occurrence of any event which constitutes a  Default or
     Event of Default which  notice shall specify the nature  thereof, the
     period of existence thereof  and what action Holdings, the  Parent or
     the Borrowers proposes to take with  respect thereto and (y) ten (10)
     Business Days after any Borrower obtains knowledge thereof, notice of
     the commencement of or any significant development in any  litigation
     or  governmental proceeding  pending against  Holdings or any  of its
     Subsidiaries which  is likely to have a Material Adverse Effect or is
     likely to have a material adverse effect on the ability of any Credit
     Party  to perform its obligations hereunder or under any other Credit
     Document.

          (g)  Insurance  Report.  On or before September 30 of each year,
     a  report from  Holdings and/or  the Borrowers'  independent maritime
     insurance broker as required by the Mortgages.

          (h)  Annual  Rig Valuation Report.  On or before September 30 of
     each  year, an updated rig  valuation report from  an Approved Broker
     setting forth the current Market Value of each Mortgaged Rig.

          (i)  SEC Reports.  Promptly upon transmission thereof, copies of
     any material filings and  registration with, and reports to,  the SEC
     by Holdings or  any of its  Subsidiaries and copies of  all financial
     statements, proxy statements, notices and reports as Holdings or  any
     of its Subsidiaries shall  generally send to analysts or  all holders
     of their  capital stock in  their capacity  as such holders  (in each
     case to the extent not theretofore delivered to the Banks pursuant to
     this Agreement).

          (j)  Other  Information.     From  time  to   time,  such  other
     information   or  documents   (financial   or   otherwise)   as   the
     Administrative Agent on  its own behalf or on behalf  of the Required
     Banks may reasonably request.

          7.02  Books, Records and Inspections.  Within five  (5) Business
Days  of a written request from the  Banks to the chief financial officer,
controller or any Authorized Officer of Holdings or any Borrower, Holdings
will,  and will cause  each of its  Subsidiaries to make  available to the
Banks such information as the Banks may reasonably request with respect to
the business, affairs or condition (financial or otherwise) of Holdings or
any  of  its  Subsidiaries,  subject  to  any  applicable  confidentiality
agreements dealing with such information; provided, however, that Holdings
and the  Borrowers will  use their  best efforts  to obtain  any necessary
consents in order to allow  such information to be provided to  the Banks,
and,  will  permit   officers  and  designated   representatives  of   the
Administrative  Agent or the Required  Banks, to the  extent necessary, to
examine the books of account  of Holdings and any of its  Subsidiaries and
discuss  the affairs, finances and accounts of  Holdings and of any of its
Subsidiaries  with, and  be  advised as  to  the same  by,  its and  their
officers  and independent accountants,  all at  such reasonable  times and
intervals and to such reasonable extent as the Administrative Agent or the
Required Banks may desire.

          7.03  Insurance.  The  Borrowers shall  insure, or  cause to  be
insured, the  Mortgaged  Rigs pursuant  to  the terms  of the  U.S.  Fleet
Mortgage, the Bahamian  Mortgages and  the Liberian Fleet  Mortgage.   The<PAGE>


Borrowers will promptly  notify the Administrative  Agent of any  material
change in  such insurances  or  any change  in the  underwriters or  clubs
providing such insurance.  The Borrowers shall annually, but no later than
the  anniversary of the date of this Agreement, furnish the Administrative
Agent with evidence of all such insurance policies currently in force.

          7.04  Payment of  Taxes.  Holdings will pay  and discharge,  and
will cause  each of  the other  Credit Parties to  pay and  discharge, all
taxes, assessments and governmental  charges or levies imposed upon  it or
upon its income or profits, or upon any properties belonging  to it, prior
to  the date  on which  penalties attach  thereto, and  all lawful  claims
which,  if unpaid, might  become a Lien  or charge upon  any properties of
Holdings  or any of its  Subsidiaries, PROVIDED that  neither Holdings nor
any  Subsidiary shall be required to pay any such tax, assessment, charge,
levy or  claim  which is  being  contested in  good  faith and  by  proper
proceedings if it has maintained adequate reserves with respect thereto in
accordance with GAAP.

          7.05  Consolidated Corporate Franchises.  Holdings will  do, and
will cause the Borrowers and the Borrowers' respective Subsidiaries to do,
or  cause to be  done, all things  necessary to preserve  and keep in full
force  and effect its existence, material rights and authority, unless the
failure  to do  so is  not reasonably  likely to  have a  Material Adverse
Effect, PROVIDED that any  transaction permitted by Section 8.02  will not
constitute a breach of this Section 7.05.

          7.06  Compliance  with Statutes,  etc.  Holdings will,  and will
cause the Borrowers and the Borrowers'  respective Subsidiaries to, comply
with  all applicable statutes, regulations  and orders of,  and all appli-
cable restrictions  imposed  by,  all  governmental  bodies,  domestic  or
foreign, in  respect of the conduct  of its business and  the ownership of
its property other  than those  the non- compliance  with which would  not
have a Material Adverse Effect or would not have a material adverse effect
on the  ability of any Credit  Party to perform its  obligations under any
Credit Document to which it is party.

          7.07  Good Repair.  The  Borrowers will, and will  cause each of
their respective Subsidiaries to, keep the Mortgaged Rigs, in whomsoever's
possession  they  may be,  in good  repair,  working order  and condition,
normal wear and tear excepted, and, subject to Section 8.02, see that from
time  to time  there are  made in  such Mortgaged  Rigs all  necessary and
proper repairs, renewals, replacements, extensions, additions, betterments
and  improvements  thereto  to the  extent  and  in the  manner  useful or
customary for companies in similar businesses.

          7.08  End of  Fiscal Years; Fiscal Quarters.  Holdings will, for
financial reporting purposes, cause (i) each of its fiscal years to end on
December 31 of each  year and (ii) each of  its fiscal quarters to  end on
March 31, June 30, September 30 and December 31 of each year.

          7.09  Use of Proceeds.  All proceeds of the Loans  shall be used
as provided in Section 6.05.

           7.10  Earnings  Concentration Account.   Upon the occurrence of
an  Event of  Default,  the Borrowers  shall open  and  maintain with  the
Collateral Agent, for  the benefit  of the Banks,  on terms  substantially
similar  to those typically offered to similar depositors, an account (the<PAGE>


"Concentration Account") into which all Earnings  of the Borrowers arising
from the operation of the Mortgaged Rigs shall  be deposited.  For so long
thereafter as such  Event of  Default is continuing,  such Earnings  shall
continue to be  deposited, and the Borrowers  hereby agree to  continue to
deposit such Earnings, in  such account and maintained as  cash collateral
in  accordance  with  the Security  Agreement.    Funds  remaining in  the
Concentration Account shall be released from time to time to the Borrowers
(i) at the  discretion of the Required Banks or  (ii) upon the termination
of any then existing Default or Event of Default.

           7.11  Additional  Rig Valuations.    At any  time  when in  the
reasonable  judgment of  the  Required Banks  there  has been  an  adverse
development  in the market for  drilling rigs comparable  to the Mortgaged
Rigs,  upon the written request  of the Administrative  Agent on behalf of
the Required  Banks and at the  expense of the Borrowers,  Holdings or the
Borrowers  shall  retain an  Approved Broker  to  supply a  written report
setting  forth  the Market  Value  of  each Mortgaged  Rig  at  such time.
Holdings or the Borrowers may retain a second Approved Broker of their own
choosing at  such time and at  its own expense to supply  a second written
report setting  forth the Market Value  of such Mortgaged  Rigs.  Promptly
upon receipt thereof Holdings and/or the Borrowers shall deliver copies of
each such report to the Banks.  

           7.12  Further  Assurances.  (a)  The  Borrowers will,  and will
cause  each of  their respective  Subsidiaries to, at  the expense  of the
Borrowers, make, execute, endorse, acknowledge, file and/or deliver to the
Collateral Agent or the Security Trustee, as the case may be, from time to
time such vouchers, invoices, schedules, confirmatory assignments, convey-
ances, financing  statements, transfer  endorsements, powers  of attorney,
certificates,  real  property surveys,  reports  and  other assurances  or
instruments and  take such further steps relating to the Collateral as the
Collateral Agent  or  the  Security  Trustee,  as the  case  may  be,  may
reasonably require.  

          (b)  The Borrowers agree that each action required above by this
Section 7.12 shall be completed as soon as possible, but in no event later
than  60  days  after  such  action  is  requested  to  be  taken  by  the
Administrative  Agent or  the Required  Banks, PROVIDED  that in  no event
shall Holdings or the Borrowers be required to take any action, other than
using its reasonable commercial efforts without any material  expenditure,
to obtain consents or other actions from third parties with respect to its
compliance with this Section 7.12.

           7.13  ERISA.  (a) As soon as possible and, in any event, within
30 days after Holdings, the Parent, the Borrowers, any of their respective
Subsidiaries or any ERISA  Affiliate knows that any Reportable  Event with
respect to any Plan  has occurred, Holdings or the  Borrowers will deliver
to  each of the Banks a statement  of an Authorized Officer of Holdings or
the affected Borrowers setting  forth details as to such  Reportable Event
and the action,  if any, that  Holdings, the  Parent, the Borrowers,  such
Subsidiary or  such ERISA Affiliate  is required or proposes  to take with
respect  thereto, together with  a copy of  the notice of  such Reportable
Event given to  the PBGC,  if a copy  of such notice  is available to  any
Borrower and  (b) promptly  after receipt  thereof, a  copy of any  notice
relating  to a  Reportable Event  having a  Material Adverse  Effect which
Holdings  or any  of its  Subsidiaries may  receive from  the PBGC  or the
Internal Revenue Service with respect to any Plan; PROVIDED, HOWEVER, this<PAGE>


clause (b) shall not  apply to notices of general  application promulgated
by the Department of Labor.

          SECTION  8.  NEGATIVE COVENANTS.  Holdings,  the Parent  and the
Borrowers hereby covenant and  agree that as of the  Restatement Effective
Date and thereafter for so  long as this Agreement is in effect  and until
all Commitments  have terminated, no  Letters of Credit or  Notes are out-
standing and the Loans  and Unpaid Drawings, together with  interest, Fees
and all other Obligations incurred hereunder, are paid in full:

           8.01  Changes  in Business.    Holdings will  not and  will not
permit the  Borrowers  and  the  Borrowers'  respective  Subsidiaries  to,
materially alter the  character of their  business taken as  a whole  from
that conducted on  the Restatement Effective Date  (including any material
expansion outside of the  oil field service industry), PROVIDED  that this
Section 8.01 shall not  restrict such Persons from engaging  in businesses
ancillary to the oil field service industry.

           8.02  Consolidation, Merger  or Sale of Assets,  etc.  Holdings
will not, and will not permit  the Parent, the Borrowers or the Subsidiary
Guarantor to, wind up,  liquidate or dissolve its  affairs, or enter  into
any transaction of merger  or consolidation, sell or otherwise  dispose of
all or substantially all of its property or assets or of any Collateral or
agree to  do any  of the  foregoing at any  future time,  except that  the
following shall be permitted:

          (a)  (i) the Subsidiary Guarantor may be merged with or into, or
     be  liquidated  into,  Borrower C,  so  long  as  Borrower  C is  the
     surviving entity, (ii) all or any part of the business properties and
     assets of the Subsidiary  Guarantor may be conveyed, leased,  sold or
     transferred to  Borrower C,  and (iii)  the Parent may  be merged  or
     consolidated with or into,  or be liquidated into, any entity so long
     as the pledge made pursuant to the Pledge Agreement remains in effect
     following such merger consolidation or liquidation, PROVIDED that  if
     any  Collateral  is transferred  pursuant  to  this Section  8.02(a),
     Holdings and/or  a  Borrower  shall provide the  Administrative Agent
     with ten (10)  Business Days' prior notice of such transfer, and such
     Borrower  or Guarantor,  as the  case may  be, owning  the Collateral
     after such transfer shall take all action reasonably requested by the
     Collateral Agent and/or the  Security Trustee in respect of  the con-
     tinued priority and perfection of such Collateral;

          (b)  other sales or dispositions of assets PROVIDED that (i) (x)
     no  Collateral, other  than  surplus  or  scrap  equipment  from  any
     Mortgaged Rig, may be sold without the prior  written approval of the
     Required  Banks  and (y)  in  the event  of  such  sale concerning  a
     Mortgaged Rig, the Total  Commitment shall be reduced as  required by
     Section 3.03(c)  or (d)  and (ii) no  such sale or  disposition shall
     constitute the sale or disposition of all or substantially all of the
     combined  assets of Holdings and  its Subsidiaries taken  as a whole;
     and

          (c)  other sales or dispositions  of assets in each case  to the
     extent  the Required  Banks  have consented  in  writing thereto  and
     subject to such conditions as may be set forth in such consent.<PAGE>


          To  the extent any Collateral  is sold or  otherwise disposed of
(to any  Person other than Holdings and  its Subsidiaries) as permitted by
this  Section 8.02, such Collateral shall be sold or otherwise disposed of
free and clear  of the Liens  created by the  Security Documents, and  the
Administrative Agent, the Collateral Agent  and the Security Trustee shall
be authorized to  take any actions deemed  appropriate in order to  effect
the foregoing.

           8.03  Liens on Assets.  The  Borrowers will not,  and will  not
permit any of their  respective Subsidiaries to, create, incur,  assume or
suffer  to exist any Lien  upon or with respect to  any Collateral or sell
any such Collateral  subject to an understanding or  agreement, contingent
or otherwise, to repurchase such Collateral or assign any right to receive
income derived from  such Collateral, or file or permit  the filing of any
financing statement with respect to any  such Collateral under the UCC  or
any other  similar notice of  Lien under  any similar recording  or notice
statute; except that the following shall be permitted:

          (a)  Liens  for taxes  not  yet due  or  Liens for  taxes  being
     contested  in good  faith  and by  appropriate proceedings  for which
     adequate reserves with respect thereto, in accordance with GAAP, have
     been established;

          (b)  Liens  imposed by law  which were incurred  in the ordinary
     course of business, such as carriers', warehousemen's and  mechanics'
     Liens, statutory  landlord's Liens, maritime Liens  and other similar
     Liens arising  in the ordinary course  of business, and (x)  which do
     not  in the  aggregate  materially detract  from  the value  of  such
     Collateral or materially impair  the use thereof in the  operation of
     the  business of any Borrower or any of their respective Subsidiaries
     or  (y)  which  are being  contested  in  good  faith by  appropriate
     proceedings (including the providing of bail), which proceedings have
     the effect  of preventing the forfeiture  or sale of the  property or
     assets subject to such Lien or procuring the  release of the property
     or assets subject to such Lien from arrest or detention;

          (c)  Liens created by or pursuant to this Agreement or the other
     Credit Documents;

          (d)  Liens permitted under the express terms of the Mortgages or
     other Security Documents;

          (e)  Judgment  Liens in  existence less than  30 days  after the
     entry thereof or  with respect to which execution has  been stayed or
     the payment of which is covered in full by insurance;

          (f)  any  interest or title of  a lessor or  charterer under any
     lease  or charter (i) in existence on the Restatement Effective Date,
     (ii)  among any  Borrower  and  any  of  its  Subsidiaries  or  (iii)
     otherwise permitted by this Agreement; and

          (g)   Liens on  equipment which is  the subject of  an operating
     lease  or similar use arrangement entered into in the ordinary course
     of business and title to which is held by a third party;

          (h)  Liens incurred  in  the  ordinary  course  of  business  in
     connection with  workmen's  compensation, unemployment  insurance  or<PAGE>


     other  forms  of governmental  insurance  or benefits,  or  to secure
     performance of tenders and statutory obligations entered into  in the
     ordinary course of  business or  to secure obligations  on surety  or
     appeal  bonds in the ordinary course of business or easements, rights
     of  way and similar encumbrances  incurred in the  ordinary course of
     business  and  not  interfering  with  the  ordinary conduct  of  the
     Borrowers or any of their respective Subsidiaries; and

          (i)   Liens  on  permitted  Indebtedness  described  in  Section
     8.04(i), (ii), (iii), (viii)  and (x), and up  to $20,000,000 in  the
     aggregate of Indebtedness described in Section 8.04(vi). 

          8.04  Indebtedness.   Holdings  will not  permit any  Restricted
Subsidiary  to  contract, create,  incur, assume  or  suffer to  exist any
Indebtedness, except:

          (i)  Indebtedness  incurred pursuant  to this  Agreement and the
     other Credit Documents;

         (ii)  Indebtedness evidenced by Capitalized Lease  Obligations so
     long  as   the  aggregate  principal  amount   of  Capitalized  Lease
     Obligations outstanding  at any  time pursuant  to this Section  8.04
     does not exceed $1,000,000 in the aggregate; 

        (iii)  Indebtedness  under Interest  Rate Agreements  with  one or
     both of the Co-Agents;

         (iv)  intercompany  Indebtedness  of any  Wholly-Owned Subsidiary
     of any Borrower owing to such Borrower;

          (v)  unsecured  loans  from one  Borrower  to another  Borrower,
     from any Subsidiary of  a Borrower to a Borrower, from any Restricted
     Subsidiary  to  another  Restricted  Subsidiary,  PROVIDED that  such
     Indebtedness must be expressly subordinate to the obligations of  the
     recipient pursuant to this Agreement; 

         (vi)  letters  of credit, performance  and bid  bonds obtained by
     the  Borrowers  and their  respective  Subsidiaries  in the  ordinary
     course of business up to an aggregate amount of $50,000,000; 

        (vii)  supersedeas  bonds  obtained by  the  Borrowers  and  their
     respective Subsidiaries in the ordinary course of business;

       (viii)  so long as no  Default or Event of Default exists  or would
     result therefrom, the  Borrowers, the Borrowers' Subsidiaries  and/or
     the Subsidiary Guarantor may incur purchase  money Indebtedness up to
     50% of  the total consideration  paid by such  Person to acquire  any
     offshore drilling rig;

         (ix)  Indebtedness of Borrower  C outstanding on the  Restatement
     Effective Date  pursuant  to its  9  7/8% Senior  Subordinated  Notes
     issued under and governed by the Dual Indenture; and

          (x)  additional  Indebtedness   of  the   Borrowers  and   their
     Subsidiaries  incurred  in the  ordinary  course of  business  not to
     exceed $15,000,000  in aggregate principal amount  outstanding at any
     one time.<PAGE>


          8.05  Dividends;       Restrictions       on       Subsidiaries,
etc.  (a)  Holdings  will not, and will not permit any of its Subsidiaries
to, declare  or pay any  dividends or  return any capital  to, the  stock-
holders of Holdings or  authorize or make any other  distribution, payment
or delivery of  property or cash to the stockholders  of Holdings as such,
or set aside any funds for any of the foregoing purposes, or permit any of
its Subsidiaries to  purchase or otherwise  acquire for consideration  any
shares of  any class of  the capital stock  of Holdings, now  or hereafter
outstanding  (or any  options  or warrants  or  stock appreciation  rights
issued by  Holdings  with  respect  to  its capital  stock)  (all  of  the
foregoing "Dividends");  PROVIDED that so long  as no Default or  Event of
Default exists or would  result therefrom, Holdings shall be  permitted to
(i) pay or  make Dividends on its common stock in  an amount not to exceed
50%,  in the aggregate, of  Consolidated Net Income  on a cumulative basis
beginning January 1, 1993 and (ii) pay dividends on any class of preferred
stock, not  to exceed $8,000,000 in  the aggregate for any  fiscal year of
Holdings.

          (b)  The  Parent and the Borrowers will not, and will not permit
any of the Restricted Subsidiaries to, create or otherwise cause or suffer
to exist  any  encumbrance or  restriction  which prohibits  or  otherwise
restricts  (A) the ability of any Guarantor  or of any Borrower to (a) pay
dividends or make other distributions or pay any  Indebtedness owed to any
Borrower or any Guarantor, or  (b) make loans or advances to  any Borrower
or  any Guarantor,  (c) transfer any  of its  properties or  assets to any
Borrower  or any  Guarantor or  (B)  the ability  of any  Borrower or  any
Guarantor of such Borrower to create, incur, assume or suffer to exist any
Lien upon its  property or assets  to secure  the Obligations, other  than
prohibitions or restrictions existing under or by reason of:

          (i)  this Agreement and the other Credit Documents;

         (ii)  applicable law;

        (iii)  customary  non-assignment provisions  entered into  in  the
     ordinary course of business and consistent with past practices;

         (iv)  any   restriction   or  encumbrance   with  respect   to  a
     Subsidiary  Guarantor imposed pursuant to an agreement which has been
     entered into for the sale or disposition of all  or substantially all
     of the capital stock or assets of such Subsidiary Guarantor, so  long
     as such sale or disposition is permitted under this Agreement; and 

          (v)  Permitted Liens  and any documents or instruments governing
     the terms of  any Indebtedness  or other obligations  secured by  any
     such  Liens, PROVIDED  that such  prohibitions or  restrictions apply
     only to the assets subject to such Liens.

          8.06  Vessel Management; Registry.  The Borrowers will not,  and
will not permit any of their respective Subsidiaries to, without the prior
written  consent  of  the  Required  Banks  (which  consent  will  not  be
unreasonably  withheld), (i) change the  overall management of  any of the
Mortgaged  Rigs from the Borrowers and/or the Subsidiary Guarantor or (ii)
change the national registry of any Mortgaged Rig.

          8.07  Interest  Coverage Ratio.  Holdings  will  not permit  the
ratio of (i) Consolidated EBITDA to (ii) Consolidated Interest Expense for<PAGE>


any period of twelve  (12) consecutive calendar months of  Holdings (taken
as one accounting period) to be less than 4.00:1.00.

          8.08  Working  Capital.  Holdings  will not  permit  the Working
Capital  Ratio on  the  last day  of any  calendar month  to be  less than
1.50:1.00.

           8.09  Leverage  Ratio.  Holdings will  not permit  the Leverage
Ratio at  the end  of  any calendar  month  ending after  the  Restatement
Effective Date to be greater than 0.35:1.00.

          8.10  Collateral    Maintenance.  The   Borrowers    and   their
respective Subsidiaries shall not permit the Market Value of the Mortgaged
Rigs at any time (a) prior to October 18, 1999, to be less than  2.0 times
and  (b) thereafter, to  be less than  2.5 times, the  Total Commitment in
effect  from time to time; PROVIDED that,  in the event that any valuation
provided pursuant to Section  7.01(h) or 7.11 establishes that  the Market
Value of the Mortgaged Rigs  is less than that otherwise required  by this
Section 8.10, the Borrowers  may satisfy the requirements of  this Section
8.10  (subject to  future evaluation)  by providing  additional collateral
security  acceptable to the Required  Banks sufficient to  insure that the
Market Value of the Mortgaged Rigs  is sufficient to meet the requirements
of Section 8.10(a) or (b), as applicable.

          SECTION 9.  EVENTS OF  DEFAULT.  Upon the occurrence  of any  of
the following specified events (each an "Event of Default"):

           9.01  Payments.  Any Borrower shall default in the payment when
due of any principal of the Loans, any Unpaid Drawing, any interest on the
Loans or any Fees or  any other amounts owing hereunder or under any other
Credit Document  and such default shall continue for two (2) more Business
Days; or

           9.02  Representations,  etc.  Any  representation, warranty  or
statement made by any Credit Party  herein or in any other Credit Document
or in any statement  or certificate delivered or required  to be delivered
pursuant  hereto or  thereto shall  prove  to be  untrue  in any  material
respect on the date as of which made or deemed made; or

           9.03  Covenants.  Any Credit Party shall (a) default in the due
performance  or  observance  by it  of  any  term,  covenant or  agreement
contained  in  Section  7.08  or  Section 8  or  (b)  default  in  the due
performance or observance by  it of any term, covenant or agreement (other
than those referred to in Section 9.01, 9.02 or clause (a) of this Section
9.03)  contained  in  this  Agreement  and  such  default  shall  continue
unremedied for a period  of at least 30 days after  notice to any Borrower
by the Administrative Agent or the Required Banks; or

           9.04  Default Under Other Agreements.  (a)  Any Credit Party or
any of their respective Subsidiaries shall (i) default in any payment with
respect to any Indebtedness (other than the Obligations) beyond the period
of grace, if any, applicable thereto or (ii) default in  the observance or
performance  of   any  agreement  or   condition  relating  to   any  such
Indebtedness  or  contained in  any  instrument  or agreement  evidencing,
securing or relating thereto, or any  other event shall occur or condition
exist, the effect of which default  or other event or condition results in
acceleration or the  renegotiation of  the material payment  terms of  any<PAGE>


such  Indebtedness to become due prior to  its stated maturity; or (b) any
such  Indebtedness  of  any  Credit  Party  or  any  of  their  respective
Subsidiaries shall  be declared to be  due and payable, or  required to be
prepaid  other than by a regularly scheduled required prepayment, prior to
the  stated maturity  thereof, PROVIDED  that it  shall not  constitute an
Event of Default  pursuant to this Section  9.04 unless (x) the  aggregate
principal amount of such Indebtedness in default exceeds $5,000,000 at any
one  time and (y) adequate  reserves (determined in  accordance with GAAP)
have not been provided; or

           9.05  Bankruptcy,  etc.  Any Credit  Party  or  any  direct  or
indirect  parent of  any  Credit Party  shall  commence a  voluntary  case
concerning  itself under  Title  11 of  the  United States  Code  entitled
"Bankruptcy," as now or hereafter in effect, or any successor thereto (the
"Bankruptcy Code"); or an involuntary case is commenced against any Credit
Party or any  direct or indirect parent of any Credit  Party and the peti-
tion is  not controverted within  10 days, or  is not stayed  or dismissed
within 90 days, after commencement of the case; or a custodian (as defined
in  the Bankruptcy  Code) is  appointed for,  or takes  charge of,  all or
substantially all  of the property  of any Credit  Party or any  direct or
indirect parent of any Credit Party; or any Credit Party or any  direct or
indirect parent of any  Credit Party commences any other  proceeding under
any reorganization, arrangement,  adjustment of debt,  relief of  debtors,
dissolution, insolvency or liquidation or similar law  of any jurisdiction
whether now or  hereafter in effect  relating to any  Credit Party or  any
direct or  indirect parent  of any  Credit Party;  or  there is  commenced
against any  Credit Party or any  direct or indirect parent  of any Credit
Party any such case  or proceeding which remains undismissed for  a period
of 90 days;  or any Credit Party  or any direct or indirect  parent of any
Credit Party is adjudicated insolvent or bankrupt; or any order of  relief
or  other order  approving any  such case  or  proceeding is  entered; any
Credit Party or any direct or  indirect parent of any Credit Party suffers
any  appointment of any  custodian or the  like for it  or any substantial
part of its property to continue undischarged or unstayed for  a period of
90  days; or  any Credit  Party or  any direct  or indirect parent  of any
Credit Party makes a  general assignment for the benefit  of creditors; or
any  corporate  action is  taken  by any  Credit  Party or  any  direct or
indirect parent  of any Credit Party  for the purpose of  effecting any of
the foregoing; or

          9.06  Security  Documents.  (i)  Any  Security  Document  shall,
after the  execution and delivery thereof,  cease to be in  full force and
effect,  or  shall cease  to give  the  Collateral Agent  or  the Security
Trustee, as  the case  may be,  the Liens,  rights, powers  and privileges
purported to  be created thereby in  favor of the Collateral  Agent or the
Security Trustee, as  the case may  be; PROVIDED that,  to the extent  any
Security Document ceases to be in full force and effect or fails to create
the Liens, rights, powers  and privileges purported to be  created thereby
as a  result of a  change in law of  a jurisdiction outside  of the United
States, such failure shall not constitute an  Event of Default unless such
failure continues for a period of more  than 30 days without the Banks and
the  Borrowers finding a mutually  acceptable solution to  such failure or
(ii) any Credit Party shall default  in any respect in the due performance
or observance  of  any term,  covenant  or agreement  on  its part  to  be
performed  or observed  pursuant to  any such  Security Document  and such
default (unless such default creates an Event of  Default under clause (i)
above) shall  continue unremedied for a  period of at least  30 days after<PAGE>


notice to any Borrower by the Administrative Agent  or the Required Banks;
or

          9.07  Guaranty.  Any  Guaranty  or any  provision  thereof shall
cease to  be in full  force and  effect, or  any Guarantor  or any  Person
acting by  or on behalf of  such Guarantor shall deny or  disaffirm all or
any portion of  such Guarantor's obligation  thereunder, or any  Guarantor
shall default in the observance of  any term, covenant or agreement on its
part to  be performed or observed pursuant thereto and such default (other
than any default arising  from a failure to  make any payment  thereunder)
shall continue unremedied for a period of at least 30 days after notice to
any Borrower by the Administrative Agent or the Required Banks; or

           9.08  Judgments.  Any  judgment  or  decree  shall  be  entered
against Holdings,  the Borrowers or any  other Credit Party (i)  by a U.S.
Jurisdiction involving  a liability of $5,000,000  or more in the  case of
any  one such judgment or decree, to the extent not paid or not covered by
insurance, and  any such judgment  or decree shall not  have been vacated,
discharged or  stayed or  bonded pending appeal  within 60  days from  the
entry  thereof or  (ii) by  a foreign  jurisdiction involving  a liability
which is reasonably likely to result in a Material Adverse Effect; or

           9.09  Citizenship.  Any Mortgagor  shall cease to  be qualified
to own and operate the Mortgaged Rigs under the laws of the United States,
the Bahamas or Liberia, as may be applicable; or

           9.10  Change of Control.  A Change of Control shall occur; 

then, and in any  such event, and at any time thereafter,  if any Event of
Default shall then be continuing, the Administrative Agent shall, upon the
written request of the Required Banks, by written notice to the Borrowers,
take any or all of the  following actions, without prejudice to the rights
of the  Administrative Agent or any Bank to enforce its claims against any
Credit  Party, except  as  otherwise  specifically  provided for  in  this
Agreement (PROVIDED that, if an Event of Default specified in Section 9.05
shall  occur with respect to  the Borrowers, the  result which would occur
upon the giving of written notice by the Administrative Agent as specified
in clauses (i) and (ii) below shall occur automatically without the giving
of any such notice):  (i) declare  the Total Commitment terminated, where-
upon the Commitment of each Bank shall forthwith terminate immediately and
any Commitment Commission or any other Fees shall forthwith become due and
payable without any other notice  of any kind; (ii) declare  the principal
of and  any accrued interest in  respect of all Loans  and all obligations
owing  hereunder  (including  Unpaid  Drawings)  and  thereunder  to   be,
whereupon  the same shall become,  forthwith due and  payable without pre-
sentment, demand,  protest or other notice  of any kind, all  of which are
hereby waived by each Credit Party; (iii) enforce, as Collateral Agent (or
direct  the Collateral  Agent to  enforce), any  or all  of the  Liens and
security interests  created  pursuant  to  the  Security  Documents;  (iv)
terminate any Letter of Credit which may  be terminated in accordance with
its  terms; (v)  direct  the Borrowers  to pay  (and each  Borrower hereby
agrees upon receipt of such notice, or upon the occurrence of any Event of
Default  specified in  Section 9.05 in  respect of such  Borrower, it will
pay) to  the Collateral  Agent at  the US  Payment Office such  additional
amounts of cash, to be held  as security for such Borrower's reimbursement
obligations  in respect  of Letters  of Credit  then outstanding  (if any)
equal to the aggregate Stated Amount of all (x) in the case of Borrower A,<PAGE>


Tranche A Letters of  Credit and (y) in the case of  Borrower C, Tranche C
Letters of Credit  then outstanding; and  (vi) apply any  amounts held  as
cash  collateral pursuant  to  Section 4.02  or  this Section  9  to repay
Obligations.

           SECTION 10.  DEFINITIONS.  As used herein, the  following terms
shall have  the meanings  herein  specified unless  the context  otherwise
requires.  Defined  terms in this Agreement shall  include in the singular
number the plural and in the plural the singular:

          "Adjusted Total Tranche A Commitment" shall mean at any time the
Total Tranche A Commitment less the aggregate Tranche A Commitments of all
Defaulting Banks.

          "Adjusted Total Tranche C Commitment" shall mean at any time the
total Tranche C Commitment less the aggregate Tranche C Commitments of all
Defaulting Banks.

          "Adjusted Tranche  A  Commitment" for  each Non-Defaulting  Bank
shall  mean at  any time  the product  of such  Bank's Adjusted  Tranche A
Percentage and the Adjusted Total Tranche A Commitment.

          "Adjusted Tranche A Percentage" shall mean (x) at a time when no
Bank Default exists,  for each Bank  such Bank's Tranche A  Percentage and
(y) at a  time when  a Bank Default  exists (i)  for each Bank  that is  a
Defaulting  Bank, zero  and (ii)  for each  Bank that is  a Non-Defaulting
Bank,  the  percentage  determined  by  dividing  such  Bank's  Tranche  A
Commitment at such time by the Adjusted Total Tranche A Commitment at such
time,  it being  understood  that  all  references  herein  to  Tranche  A
Commitments and the Adjusted Total Tranche A Commitment at a time when the
Total Tranche  A Commitment or Adjusted Total Tranche A Commitment, as the
case may  be, has  been terminated  shall be references  to the  Tranche A
Commitments or Adjusted Total Tranche A Commitment, as the case may be, in
effect  immediately prior to such termination, PROVIDED that (A) no Bank's
Adjusted Tranche  A Percentage shall change upon  the occurrence of a Bank
Default from  that in effect  immediately prior to  such Bank Default  if,
after giving  effect to such Bank  Default and any repayment  of Tranche A
Loans at such time pursuant to Section 4.02(A)(a) or otherwise, the sum of
(i) the aggregate outstanding  principal amount of Tranche A Loans  of all
Non-Defaulting  Banks   plus  (ii)   the  Tranche   A  Letter  of   Credit
Outstandings, exceeds  the Adjusted  Total Tranche  A Commitment;  (B) the
changes  to the  Adjusted  Tranche A  Percentage  that would  have  become
effective upon  the occurrence of a  Bank Default but that  did not become
effective as a  result of the preceding clause (A)  shall become effective
on  the first date  after the occurrence  of the relevant  Bank Default on
which the sum  of (i) the  aggregate outstanding principal  amount of  the
Tranche A Loans of all Non-Defaulting Banks plus (ii) the Letter of Credit
Outstandings  is  equal to  or  less  than the  Adjusted  Total Tranche  A
Commitment;  and (C)  if (i)  a Non-Defaulting  Bank's Adjusted  Tranche A
Percentage is changed  pursuant to the preceding  clause (B) and (ii)  any
repayment  of such  Bank's  Tranche A  Loans, or  of Unpaid  Drawings with
respect  to Tranche A Letters of Credit,  that were made during the period
commencing after the  date of the relevant Bank Default  and ending on the
date of  such change to its Adjusted Tranche A Percentage must be returned
to Borrower  A as a preferential  or similar payment in  any bankruptcy or
similar proceeding of Borrower  A, then the change to  such Non-Defaulting
Bank's  Adjusted Tranche A Percentage effected pursuant to said clause (B)<PAGE>


shall be reduced  to that positive change, if any, as would have been made
to its Adjusted  Tranche A Percentage if (x) such  repayments had not been
made and (y) the maximum change to its Adjusted Tranche A Percentage would
have  resulted in the sum of the  outstanding principal of Tranche A Loans
made by  such Bank plus such  Bank's new Adjusted Tranche  A Percentage of
the   outstanding  principal  amount   of  Tranche  A   Letter  of  Credit
Outstandings equalling such Bank's Commitment at such time. 

          "Adjusted Tranche  C Commitment"  for  each Non-Defaulting  Bank
shall mean  at any  time  the product  of such  Banks  Adjusted Tranche  C
Percentage and the Adjusted Total Tranche C Commitment.

          "Adjusted Tranche C Percentage" shall mean (x) at a time when no
Bank  Default exists, for each  Bank such Bank's  Tranche C Percentage and
(y) at a  time when  a Bank Default  exists (i)  for each Bank  that is  a
Defaulting Bank,  zero and  (ii) for  each Bank  that is  a Non-Defaulting
Bank,  the  percentage  determined  by  dividing  such  Bank's  Tranche  C
Commitment at such time by the Adjusted Total Tranche C Commitment at such
time,  it being  understood  that  all  references  herein  to  Tranche  C
Commitments and the Adjusted Total Tranche C Commitment at a time when the
Total Tranche C Commitment  or Adjusted Total Tranche C Commitment, as the
case   may be, has been  terminated shall be  references to the  Tranche C
Commitments or Adjusted Total Tranche C Commitment, as the case may be, in
effect  immediately prior to such termination, PROVIDED that (A) no Bank's
Adjusted Tranche C Percentage  shall change upon the occurrence  of a Bank
Default from  that in  effect immediately prior  to such Bank  Default if,
after giving  effect to such Bank  Default and any repayment  of Tranche C
Loans at such time pursuant to Section 4.02(A)(a) or otherwise, the sum of
(i)  the aggregate outstanding principal amount  of Tranche C Loans of all
Non-Defaulting  Banks   plus  (ii)   the  Tranche  C   Letter  of   Credit
Outstandings, exceeds  the Adjusted  Total Tranche  C Commitment; (b)  the
changes  to the  Adjusted  Tranche C  Percentage  that would  have  become
effective upon  the occurrence of a  Bank Default but that  did not become
effective as a result of  the preceding clause (A) shall become  effective
on the  first date after  the occurrence of  the relevant Bank  Default on
which the  sum of (i)  the aggregate outstanding  principal amount of  the
Tranche C Loans of all Non-Defaulting Banks plus (ii) the Tranche C Letter
of Credit Outstandings is equal to or less than the Adjusted Total Tranche
C Commitment; and  (C) if (i) a  Non-Defaulting Bank's Adjusted Tranche  C
Percentage is  changed pursuant to  the preceding clause (B)  and (ii) any
repayment  of such  Bank's Tranche  C  Loans, or  of Unpaid  Drawings with
respect to Tranche C Letters  of Credit, that were made during  the period
commencing  after the date of the relevant  Bank Default and ending on the
date of such change to its  Adjusted Tranche C Percentage must be returned
to Borrower  C as a preferential  or similar payment in  any bankruptcy or
similar proceeding of Borrower  C, then the change to  such Non-Defaulting
Bank's  Adjusted Tranche C Percentage effected pursuant to said clause (B)
shall be reduced to  that positive change, if any, as would have been made
to  its Adjusted Tranche C Percentage if  (x) such repayments had not been
made and (y) the maximum change to its Adjusted Tranche C Percentage would
have resulted in the sum  of the outstanding principal of Tranche  C Loans
made by  such Bank plus such  Bank's new Adjusted Tranche  C Percentage of
the  outstanding   principal  amount  of   Tranche  C  Letter   of  Credit
Outstandings equalling such Bank's Tranche C Commitment at such time.<PAGE>


          "Administrative Agent" shall  have the meaning  provided in  the
first paragraph  of this Agreement and shall  include any successor to the
Administrative Agent appointed pursuant to Section 11.09.

          "Affected Eurodollar Loan"  shall have the  meaning provided  in
Section 4.02(B).

          "Affiliate" shall  mean, with respect  to any Person,  any other
Person directly  or indirectly controlling  (including but not  limited to
all directors and officers of such Person), controlled by, or under direct
or  indirect common control with such Person.  A Person shall be deemed to
control  a corporation if  such Person possesses,  directly or indirectly,
the power (i) to vote 10% or more of the securities having ordinary voting
power for the election of directors  of such corporation or (ii) to direct
or cause the direction of the management and policies of such corporation,
whether  through  the  ownership  of  voting  securities,  by  contract or
otherwise.

          "Agreement" shall mean this Credit Agreement, as the same may be
from time to time modified, amended and/or supplemented.

          "Applicable Eurodollar Margin" shall be equal to the  percentage
per  annum set forth below opposite Holdings' applicable Pricing Ratio, as
calculated for the  last day of  the fiscal quarter  last ended;  PROVIDED
that, in the event  a change in the Applicable Eurodollar  Margin is to be
made, such change  shall not become effective until the  date which is one
(1)  Business Day  after  the date  upon  which the  Administrative  Agent
receives written notice from  Holdings or any Borrower pursuant  to Clause
7.01(e) evidencing that such change is warranted:

                                                     Eurodollar
                 Pricing Ratio                         Margin
        -------------------------------           --------------- 
        Less than or equal to 0.50:1.00            .40% per annum

        Greater than 0.50:1.00 but         
        less than or equal to 1.00:1.00            .50% per annum

        Greater than 1.00:1.00 but         
        less than or equal to 2.00:1.00            .75% per annum

        Greater than 2.00:1.00 but         
        less than or equal to 3.00:1.00           1.00% per annum

        Greater than 3.00:1.00 but         
        less than or equal to 4.00:1.00           1.25% per annum

        Greater than 4.00:1.00                    1.50% per annum

          "Approved  Bank"   shall  have  the  meaning   provided  in  the
definition of "Cash Equivalents."

          "Approved  Broker"   shall  mean   each   of  the   first-class,
international, independent, sale-and-purchase brokers of offshore drilling
units similar to those  listed on Annex VIII, as such Annex may be revised<PAGE>


from time to time at the request of the Required Banks with the consent of
the Borrowers, which consent shall not be unreasonably withheld.

          "Approved Company"  shall  have  the  meaning  provided  in  the
definition of "Cash Equivalents."

          "Assignment and Assumption Agreement" shall mean the  Assignment
and  Assumption  Agreement  substantially   in  the  form  of  Exhibit   M
(appropriately completed).

          "Authorized  Officer" shall mean any officer  of Holdings or any
Borrower  designated as  such in  writing to  the Administrative  Agent by
Holdings or such Borrower.

          "Bahamian Mortgage"  shall have the meaning  provided in Section
5.08(a).

          "Bahamian Rigs" shall mean ENSCO 80 (official no. 724944), ENSCO
85 (official no. 724945), and ENSCO 92 (official no. 724946).

          "Bank" shall have the meaning provided in the first paragraph of
this Agreement.

          "Bank  Default" shall mean (i)  the refusal (which  has not been
retracted) of a Bank to make available its portion of any Loans or to fund
its portion of  any unreimbursed payment under  Section 2.04(d) or  (ii) a
Bank  having notified the Administrative Agent and/or any Borrower that it
does not intend to comply with the obligations under Section 1.01 or under
Section 2.04(d),  in the case  of either  (i) or (ii)  as a result  of the
appointment of  a receiver or conservator with respect to such Bank at the
direction or request of any regulatory agency or authority.

          "Bankruptcy  Code" shall  have the  meaning provided  in Section
9.05.

          "Base  Rate" shall  mean the  higher of  (i) the  Administrative
Agent's Prime  Rate, and  (ii) 0.50%  per annum  above  the Federal  Funds
Effective Rate.

          "Base  Rate Loan" shall mean  each Loan bearing  interest at the
rates provided in Section 1.08(a).

          "Borrower"  shall  have  the  meaning  provided  in  the   first
paragraph of this Agreement.

          "Borrower  A"  shall  have the  meaning  provided  in the  first
paragraph of this Agreement.

          "Borrower B"  shall  have  the meaning  provided  in  the  first
paragraph of this Agreement.

          "Borrower  C" shall  have  the  meaning  provided in  the  first
paragraph of this Agreement.

          "Borrowing"  shall  mean  the incurrence  of  one  Type of  Loan
pursuant to  any Facility by  any Borrower from  all of  the Banks with  a
Commitment under  such Facility on  a pro rata  basis on a given  date (or<PAGE>


resulting from  conversions  on a  given  date),  having in  the  case  of
Eurodollar Loans the same  Interest Period; PROVIDED that Base  Rate Loans
incurred pursuant to Section  1.10(b) shall be considered included  in any
related Borrowing of Eurodollar Loans.

          "Business Day" shall  mean (i)  for all purposes  other than  as
covered  by clause (ii) below, any  day excluding Saturday, Sunday and any
day which shall be in the Cities of New York and/or London and/or Dallas a
legal holiday or a day on which banking institutions are authorized by law
or  other  governmental actions  to close  and  (ii) with  respect  to all
notices  and determinations in connection with,  and payments of principal
and  interest on,  Loans, any  day which  is a  Business Day  described in
clause  (i) and which is  also a day  for trading by and  between banks in
U.S. dollar deposits in the interbank Eurodollar market.

          "Capital Lease" as applied to any Person shall mean any lease of
any property (whether  real, personal or mixed)  by that Person as  lessee
which, in conformity with GAAP, is accounted for as a capital lease on the
balance sheet of that Person.

          "Capitalized Lease Obligations" shall mean, with respect to  any
Person, all  obligations under Capital  Leases in  each case taken  at the
amount thereof accounted for as liabilities in accordance with GAAP.

          "Cash Equivalents" shall mean (i) securities issued or  directly
and fully  guaranteed or insured  by the United  States of America  or any
agency or instrumentality thereof  having maturities of not more  than one
(1) year from the  date of acquisition, (ii) U.S. dollar  denominated time
deposits,  certificates of  deposit  and bankers'  acceptances of  (x) any
Bank, (y) any domestic commercial bank of recognized standing having capi-
tal and surplus in excess of $500,000,000  or (z) any bank (or the  parent
company  of  such bank)  whose  short-term  commercial paper  rating  from
Standard &  Poor's Corporation ("S&P") is  at least A-2 or  the equivalent
thereof  or from Moody's Investors  Service, Inc. ("Moody's")  is at least
P-2 or the equivalent thereof (any such bank, an "Approved Bank"), in each
case  with maturities of  not more  than six (6)  months from the  date of
acquisition, (iii) fully secured repurchase obligations with a term of not
more than  90 days  for underlying  securities of  the types  described in
clause (i) above  entered into  with any bank  meeting the  qualifications
specified  in clause (ii) above, (iv)  commercial paper issued by any Bank
or Approved Bank or by the parent company of any Bank or Approved Bank and
commercial  paper issued by, or guaranteed by, any industrial or financial
company  with a short-term commercial paper rating  of at least A-1 or the
equivalent thereof  by S&P or  at least P-1  or the equivalent  thereof by
Moody's  (any such company, an  "Approved Company"), or  guaranteed by any
industrial company with a long term unsecured debt rating of at least A or
A2, or the  equivalent of each thereof, from  S&P or Moody's, as  the case
may be, and in each case maturing within six (6) months after the  date of
acquisition and (v) investments in money market funds substantially all of
whose assets are comprised of securities of  the type described in clauses
(i) through (iv) above.

          "Cash  Proceeds"  shall mean,  with  respect  to any  Collateral
Disposition, the aggregate  cash payments (including any  cash received by
way of deferred payment pursuant to a note receivable issued in connection
with  such Collateral Disposition, other than the portion of such deferred<PAGE>


payment  constituting interest, but only as and when so received) received
by Holdings and/or any Subsidiary from such Collateral Disposition.

          "CBK"  shall  mean Christiania  Bank  og  Kreditkasse, New  York
Branch.

          "CERCLA"  shall mean  the Comprehensive  Environmental Response,
Compensation, and Liability  Act of  1980, as amended,  42 U.S.C.  Section
9601 et seq.

          "Change  of Control" shall mean  (a) Holdings shall  at any time
cease to own  100% of the capital  stock of each Borrower  or, directly or
indirectly, any Guarantor (other than Holdings), (b) any "person" (as such
term is  used in  Sections 13(d)  and 14(d)  of the Exchange  Act), is  or
becomes the beneficial  owner (as defined in  Rules 13d-3 and  13d-5 under
the  Exchange Act), directly or indirectly, of  more than 50% of the total
voting power of the Voting Stock of Holdings or (c) the Board of Directors
of Holdings ceases for any  reason to consist of a majority  of Continuing
Directors.

          "Claims"  shall have the  meaning provided in  the definition of
"Environmental Claims."

          "Co-Agents"  shall  have  the  meaning  provided  in  the  first
paragraph of this Agreement.

          "Code"  shall mean the Internal Revenue Code of 1986, as amended
from time to time  and the regulations promulgated and the  rulings issued
thereunder.  Section references to the Code are to the Code, as in  effect
at the Restatement  Effective Date  and any subsequent  provisions of  the
Code, amendatory thereof, supplemental thereto or substituted therefor.

          "Collateral"  shall   mean   all  of   the  Security   Agreement
Collateral,  the "Pledged Stock" as  defined in the  Pledge Agreement, the
Mortgaged  Rigs,  any  collateral delivered  to  the  Collateral  Agent or
otherwise pledged, whether or not pursuant to any Lien, in connection with
this   Agreement,  including,  without  limitation,  any  cash  collateral
delivered to the Collateral Agent pursuant to this Agreement.

          "Collateral Agent" shall mean the Administrative Agent acting as
collateral agent for the Banks.

          "Collateral Disposition"  shall mean  for  any Borrower  or  the
Subsidiary Guarantor (a) the sale, transfer or other voluntary disposition
of  any asset constituting Collateral  by such Borrower  or the Subsidiary
Guarantor  to any Person other than Holdings,  the Parent or Borrower A or
(b) any Total Loss of any Mortgaged Rig; PROVIDED that, a sale pursuant to
clause  (a) above  involving  a  Mortgaged  Rig  shall  not  constitute  a
Collateral  Disposition  to the  extent  (i) (x)  the  respective Borrower
provides  seven   (7)  Business   Days'  prior   written  notice   to  the
Administrative  Agent of such sale, (y) simultaneously with the release of
such  Mortgaged Rig  from  its  respective  Mortgage and/or  the  Security
Agreement, such  Mortgaged Rig is replaced by a substitute drilling rig or
vessel  which, in the absolute discretion of  the Required Banks, shall be
of similar or greater value and quality to such Mortgaged Rig and (z) such
replacement rig or vessel is pledged pursuant to a comparable mortgage and
made  subject to all first priority, perfected security interests in favor<PAGE>


of the Collateral Agent for the benefit of the Banks as the Required Banks
shall request, including, without limitation, those pertaining to Earnings
and  insurances of such replacement  rig or vessel  or (ii) the respective
Borrower,  upon seven  (7)  Business Days'  prior  written notice  to  the
Administrative Agent  and  simultaneously  with  such  sale,  deposits  US
Dollars in an amount equal to the Market Value of the rig or  vessel being
sold in  an account  to  be maintained  by the  Collateral  Agent for  the
benefit of the  Banks, which account shall be subject  to a first priority
perfected  security  interest in  favor of  the  Collateral Agent  for the
benefit of the Banks.

          "Commitment" shall mean, with  respect to each Bank, the  sum of
the Tranche A Commitment, Tranche B Commitment and Tranche C Commitment of
such Bank.  

          "Commitment Commission"  shall  have  the  meaning  provided  in
Section 3.01(a).

          "Consolidated Current Assets" shall mean, the current assets  of
Holdings and  its  Subsidiaries  determined  on a  consolidated  basis  in
accordance with GAAP, including cash and Cash Equivalents.

          "Consolidated  Current  Liabilities"  shall  mean,  the  current
liabilities of Holdings and its Subsidiaries determined  on a consolidated
basis  in  accordance  with  GAAP,  but  excluding  the  current liability
associated with up  to $88,000,000 of the  required repayment of  Loans in
connection with  the  Scheduled  Commitment  Reduction  occurring  on  the
Maturity Date.

          "Consolidated EBIT" shall mean,  for any period, (A) the  sum of
the  amounts  for  such  period  of  (i)  Consolidated  Net  Income,  (ii)
provisions for taxes based on income, (iii) Consolidated Interest Expense,
(iv)  amortization or write-off of  deferred financing costs  or any other
non-cash charges to  the extent deducted  in determining Consolidated  Net
Income and (v) losses on sales  of assets (excluding sales in the ordinary
course of  business, which in any event will not include sales of drilling
rigs) and other extraordinary losses or  expenses less (B) the amount  for
such period of  gains on sales of assets (excluding  sales in the ordinary
course  of business not  involving drilling rigs)  and other extraordinary
gains, all as determined on a consolidated basis in accordance with GAAP.

          "Consolidated EBITDA" shall mean, for any period, the sum of the
amounts  for such  period  of  (i)  Consolidated EBIT,  (ii)  depreciation
expense  and (iii)  amortization  expense, all  as  determined on  a  con-
solidated basis in accordance with GAAP.

          "Consolidated Funded Indebtedness"  shall mean, all Indebtedness
of  Holdings and its  Subsidiaries (excluding Indebtedness  referred to in
clauses   (ii),  (iv),  (vi),  (vii)  and  (viii)  of  the  definition  of
"Indebtedness"  and clause  (iii) of  such definition  to the  extent such
letters  of credit constitute performance letters of credit and letters of
credit issued to support bid and performance bonds in the ordinary  course
of business) calculated on  a consolidated basis in accordance  with GAAP;
PROVIDED that with respect  to calculations made pursuant to  Section 8.09
only, Consolidated Funded Indebtedness shall exclude up to $100,000,000 in
the aggregate of unsecured subordinated Indebtedness issued or outstanding
(whether on or  after the Restatement  Effective Date but  subject to  the<PAGE>


following proviso} of Holdings and/or  Borrower C pursuant to one or  more
public offerings, which shall (i) mature after the Maturity Date, (ii) not
have any  principal payments  prior to  the  Maturity Date,  and (iii)  be
subordinated  to this Facility on  a basis satisfactory  to the Co-Agents;
and PROVIDED FURTHER, that  no such subordinated Indebtedness shall  be so
excluded  which  is issued  by Borrower  C pursuant  to a  public offering
occurring after the Restatement Effective Date.

          "Consolidated  Interest  Expense" shall  mean,  for any  period,
total interest expense (including that attributable  to Capital Leases) of
Holdings  and its Subsidiaries in  accordance with GAAP  on a consolidated
basis with respect  to all  outstanding Indebtedness of  Holdings and  its
Subsidiaries,  including, without  limitation, all  commissions, discounts
and other  fees and  charges owed  with respect to  letters of  credit and
bankers' acceptance financing.

          "Consolidated  Net Income"  shall mean  for any period,  the net
income (or loss) of Holdings and its Subsidiaries on  a consolidated basis
for  such period  taken  as  a  single  accounting  period  determined  in
conformity with GAAP.

          "Consolidated Net  Worth" shall mean, at  any time, shareholders
equity  (excluding treasury stock) of  Holdings and its  Subsidiaries on a
consolidated  basis  determined in  accordance  with  GAAP; PROVIDED  that
Consolidated Net Worth  shall include preferred  stock of Holdings  issued
after the Restatement Effective Date so  long as such preferred stock  may
only be redeemed at the option of Holdings.

          "Consolidated Subsidiary" shall mean and include each Subsidiary
of Holdings and each Unrestricted Subsidiary.

          "Contingent  Obligations"  shall  mean  as  to  any  Person  any
obligation of  such  Person guaranteeing  or  intending to  guarantee  any
Indebtedness  ("primary obligations")  of any  other Person  (the "primary
obligor") in  any  manner,  whether  directly  or  indirectly,  including,
without  limitation,  any  obligation  of  such  Person,  whether  or  not
contingent,  (a) to purchase any  such primary obligation  or any property
constituting  direct or  indirect  security therefor,  (b)  to advance  or
supply funds (i) for the  purchase or payment of any such  primary obliga-
tion or (ii) to maintain working capital or equity capital  of the primary
obligor or otherwise to maintain the  net worth or solvency of the primary
obligor,  (c) to purchase  property, securities or  services primarily for
the purpose  of assuring the owner  of any such primary  obligation of the
ability of the primary obligor to  make payment of such primary obligation
or (d)  otherwise to assure  or hold  harmless the owner  of such  primary
obligation against loss  in respect thereof;  PROVIDED, HOWEVER, that  the
term Contingent  Obligation shall not include  endorsements of instruments
for deposit  or collection in the ordinary course of business.  The amount
of any Contingent Obligation shall be deemed to be  an amount equal to the
stated  or determinable  amount of  the primary  obligation in  respect of
which   such  Contingent  Obligation  is   made  or,  if   not  stated  or
determinable,  the  maximum reasonably  anticipated  liability  in respect
thereof  (assuming  such  Person is  required  to  perform  thereunder) as
determined by such Person in good faith.

          "Continuing Directors"  shall mean the directors  of Holdings on
the Restatement Effective Date and each other director, if such director's<PAGE>


nomination  for  election  to  the  Board  of  Directors  of  Holdings  is
recommended by a majority of the then Continuing Directors serving  on the
Nominating and Compensation Committee.

          "Credit Documents" shall mean this Agreement, the Notes, and the
Security Documents and any documents executed in connection therewith.

          "Credit Event" shall mean  and include the  making of a Loan  or
the issuance of a Letter of Credit.

          "Credit Party" shall  mean Holdings, the  Parent, the  Borrowers
and the Subsidiary Guarantor. 

          "Default"  shall mean  any event,  act or  condition which  with
notice or lapse of time, or both, would constitute an Event of Default.

          "Defaulting  Bank" shall mean any  Bank with respect  to which a
Bank Default is in effect.

          "Dividends" shall have the meaning provided in Section 8.05.

          "Dual  Indenture" shall mean the  Indenture, dated as of January
15, 1994, (as the same may  be amended or supplemented from time  to time)
among Dual [Holding] Company, the Subsidiary Guarantors  and Shawmut Bank,
National Association, as Trustee, governing the 9 7/8% Senior Subordinated
Notes of Dual [Holding] Company due 2004.

          "Earnings" shall have the  definition provided  in  the Security
Agreement.

          "Eligible Transferee" shall mean and include a commercial  bank,
financial institution  or  other  "accredited  investor"  (as  defined  by
Regulation D of the Securities Act of 1933).

          "Environmental  Claims"   means  any  and   all  administrative,
regulatory or judicial  actions, suits, demands,  demand letters,  claims,
liens, notices  of noncompliance or violation,  investigations (other than
internal reports prepared by Holdings or any of its Subsidiaries solely in
the ordinary course of such  Person's business and not in response  to any
third party action or request of any kind) or proceedings  relating in any
way to any Environmental Law or  any permit issued, or any approval given,
under any such Environmental Law (hereafter, "Claims"), including, without
limitation, (a) any  and all Claims by governmental  or regulatory author-
ities  for  enforcement, cleanup,  removal,  response,  remedial or  other
actions or damages pursuant  to any applicable Environmental Law,  and (b)
any  and  all Claims  by any  third  party seeking  damages, contribution,
indemnification, cost  recovery,  compensation or  injunctive  relief  re-
sulting  from Hazardous Materials arising from alleged injury or threat of
injury to health, safety or the environment.

          "Environmental Law" means any applicable Federal, state, foreign
or local statute,  law, rule, regulation,  ordinance, code, guide,  policy
and rule of  common law  now or hereafter  in effect and  in each case  as
amended,  and  any  judicial  or  administrative  interpretation  thereof,
including any judicial  or administrative order,  consent decree or  judg-
ment, relating to the environment, health, safety or  Hazardous Materials,
including, without  limitation, CERCLA; RCRA; the  Federal Water Pollution<PAGE>


Control  Act,  as  amended, 33  U.S.C.  Section 1251  et  seq.; the  Toxic
Substances Control Act, 15 U.S.C. Section 7401 et seq.; the Clean Air Act,
42 U.S.C.  Section 7401 et seq.;  the Safe Drinking  Water Act, 42  U.S.C.
Section 3808 et  seq.; the  Oil Pollution Act  of 1990, 33  U.S.C. Section
2701 et seq. and any applicable state and local or foreign counterparts or
equivalents.

          "ERISA" shall  mean the Employee Retirement  Income Security Act
of 1974, as amended from time to time, and the regulations promulgated and
rulings  issued thereunder.  Section references to  ERISA are to ERISA, as
in  effect at the Restatement Effective Date and any subsequent provisions
of   ERISA,  amendatory  thereof,   supplemental  thereto  or  substituted
therefor.

          "ERISA Affiliate" shall mean each person (as  defined in Section
3(9) of  ERISA) which together  with Holdings  or any Subsidiary  would be
deemed  to  be a  "single  employer" (i)  within the  meaning  of Sections
414(b), (c), (m) and  (o) of the Code or  (ii) as a result of  Holdings or
any Subsidiary being or having been a general partner of such person.

          "Eurodollar  Loans" shall mean each Loan bearing interest at the
rates provided in Section 1.08(b).

          "Eurodollar  Rate"  shall mean  with  respect  to each  Interest
Period for a Loan, the offered rate (rounded upward to the nearest 1/16 of
one (1) percent) for deposits  of (i) in the  case of US Dollar Loans,  US
Dollars and (ii) in the case of Pound Sterling Loans, Pounds Sterling, for
a period equivalent to such period at or about 11:00 A.M. (London time) on
the second London Banking  Day before the first day  of such period as  is
displayed  on Telerate  page 3750  (British Bankers'  Association Interest
Settlement Rates) (or  such other page  as may replace  such page 3750  on
such system  or on any other system of the information vendor for the time
being  designated by the British Bankers' Association to calculate the BBA
Interest Settlement Rate (as defined in the British Bankers' Association's
Recommended  Terms and  Conditions ("BBAIRS"  terms) dated  August 1985)),
provided that if on such date no such rate is so displayed, the Eurodollar
Rate for such period shall be the rate quoted to  the Administrative Agent
as the offered rate for deposits of  US Dollars or Pounds Sterling, as the
case may be, in an amount approximately equal to the amount in relation to
which  the Eurodollar Rate is to be  determined for a period equivalent to
such period  by prime  banks in  the London Interbank  Market at  or about
11:00 A.M. (London time) on the second Banking Day before the first day of
such period.

          "Event of Default" shall have the meaning provided in Section 9.

          "Existing Credit  Agreement" shall have the  meaning provided in
the recitals to this Agreement. 

          "Existing  Guaranty"  shall have  the  meaning  provided in  the
recitals to this Agreement.

          "Existing Letter of Credit"  shall have the meaning provided  in
Section 2.01(a).

          "Facility" shall  mean any of the  credit facilities established
under this Agreement, evidenced by the Total Commitment.<PAGE>


          "Facing Fee" shall have the meaning provided in Section 3.01(c).

          "Federal  Funds Effective  Rate" shall  mean  for any  period, a
fluctuating interest  rate equal  for each day  during such period  to the
weighted average of the rates on overnight Federal Funds transactions with
members of the Federal  Reserve System arranged by Federal  Funds brokers,
as published for such day (or, if such day  is not a Business Day, for the
next preceding Business Day) by the  Federal Reserve Bank of New York, or,
if such rate is  not so published for any day which is a Business Day, the
average of the quotations  for such day on  such transactions received  by
the  Administrative  Agent  from  three  (3)  Federal  Funds   brokers  of
recognized standing selected by the Administrative Agent.

          "Fees" shall mean  all amounts payable pursuant  to, or referred
to in, Section 3.01.

          "Floating Charge" shall mean the Debenture, dated as of February
27, 1997 between ENSCO Offshore U.K. Ltd. and CBK, as Collateral Agent and
Security Trustee for the Banks party to this Agreement.

          "GAAP" shall  mean generally accepted  accounting principles  in
the  United States of America as in  effect on the date of this Agreement;
it being understood and agreed that determinations in accordance with GAAP
for purposes of  Section 8, including  defined terms as used  therein, are
subject (to the extent provided therein) to Section 12.07(a).

          "Guaranteed  Obligations" shall  mean  all  obligations of  each
Borrower to each Bank for the full and prompt payment when due (whether at
the  stated maturity, by acceleration  or otherwise) of  the principal and
interest on  each Note issued  by such  Borrower to such  Bank, and  Loans
made, under  the Credit  Agreement and  all reimbursement obligations  and
Unpaid  Drawings with respect to Letters of  Credit, together with all the
other   obligations  and   liabilities  (including,   without  limitation,
indemnities, fees and interest thereon) of such Borrower  to such Bank now
existing or hereafter incurred under, arising out of or in connection with
the  Credit Agreement or any other Credit Document and the due performance
and  compliance with all the terms, conditions and agreements contained in
the Credit Documents by such Borrower.

          "Guarantor" shall  mean  Holdings, the  Parent,  the  Subsidiary
Guarantor and Borrower A.

          "Guaranty" shall mean the guaranty of Holdings, the Parent,  and
Borrower A pursuant  to Section 13 hereof and of  the Subsidiary Guarantor
pursuant to the Subsidiary Guaranty.

          "Hazardous  Materials"  means  (a)  any  petroleum or  petroleum
products, radioactive materials,  asbestos in  any form that  is or  could
become friable,  urea formaldehyde foam insulation,  transformers or other
equipment   that   contained,   electric  fluid   containing   levels   of
polychlorinated biphenyls, and radon gas; (b) any  chemicals, materials or
substances  defined  as  or  included  in  the  definition  of  "hazardous
substances,"   "hazardous   waste,"   "hazardous  materials,"   "extremely
hazardous waste," "restricted hazardous waste," "toxic substances," "toxic
pollutants," "contaminants," or "pollutants," or words of similar  import,
under any  applicable  Environmental  Law;  and (c)  any  other  chemical,<PAGE>


material  or  substance,  exposure  to  which is  prohibited,  limited  or
regulated by any governmental authority.

          "Holdings"  shall  have  the  meaning  provided  in  the   first
paragraph of this Agreement.

          "Indebtedness" of any Person shall mean without duplication  (i)
all  indebtedness of  such Person  for borrowed  money, (ii)  the deferred
purchase price of assets or  services which in accordance with  GAAP would
be shown on the liability side of the balance  sheet of such Person, (iii)
the  face amount of all  letters of credit issued for  the account of such
Person and,  without duplication,  all drafts drawn  thereunder, (iv)  all
Indebtedness of a second Person secured by any Lien on  any property owned
by such first Person,  whether or not such indebtedness  has been assumed,
(v) all Capitalized Lease Obligations of such Person, (vi) all obligations
of such Person  to pay a  specified purchase price  for goods or  services
whether  or  not  delivered or  accepted,  i.e.,  take-or-pay  and similar
obligations,  (vii) all net obligations of such Person under Interest Rate
Agreements and (viii)  all Contingent  Obligations of  such Person  (other
than  Contingent Obligations arising from  the guaranty by  such Person of
the obligations of any Restricted Subsidiary to the extent such guaranteed
obligations   are  permitted   under   this   Agreement);  PROVIDED   that
Indebtedness shall not include (x) trade payables and accrued expenses, in
each case arising in the ordinary course of business, (y)  indebtedness of
an Unrestricted Subsidiary and (z) deferred tax liabilities.

          "Interest  Period"  with respect  to  any  Loan shall  mean  the
interest period  applicable thereto,  as  determined pursuant  to  Section
1.09.

          "Interest Rate  Agreement" shall  mean  any interest  rate  swap
agreement,  any interest  rate  cap agreement,  any  interest rate  collar
agreement  or other similar  agreement or arrangement  designed to protect
any Credit Party against interest rate risk.

          "L/C Supportable Obligations" shall mean such obligations of the
Credit Parties as are not inconsistent  with the issuance policies of  the
Letter of Credit Issuer.

          "Leasehold"  of any  Person means  all of  the right,  title and
interest of such Person as  lessee or licensee in, to and  under leases or
licenses of land, improvements and/or fixtures.

          "Letter of  Credit" shall have  the meaning provided  in Section
2.01(a).

          "Letter of  Credit  Fee"  shall  have the  meaning  provided  in
Section 3.01(b).

          "Letter  of  Credit  Issuer"  shall  mean  Christiania  Bank  og
Kreditkasse, New York Branch.

          "Letter of  Credit Request" shall  have the meaning  provided in
Section 2.02(a).<PAGE>


          "Leverage Ratio" shall mean,  at any date of  determination, the
ratio   of  Consolidated  Funded  Indebtedness  on   such  date  to  Total
Capitalization on such date.

          "Liberian  Fleet Mortgage"  shall have  the meaning  provided in
Section 5.08(a).

          "Liberian  Rigs"  shall mean the offshore drilling rigs ENSCO 50
(Official No.  9383), ENSCO 51 (Official No. 9384), ENSCO 53 (Official No.
10260) and ENSCO 54 (Official No. 10159).

          "Lien"  shall  mean  any  mortgage,  pledge, security  interest,
security title, encumbrance,  lien or  charge of any  kind (including  any
agreement  to give  any of  the foregoing, any  conditional sale  or other
title retention agreement or any lease  in the nature thereof) other  than
arising from an event constituting a Total Loss.

          "Loan" shall have the meaning provided in Section 1.01(c).

          "Margin Stock" shall have the meaning provided in Regulation U.

          "Market  Value" shall  mean as  of any  date of  calculation the
value  as of  such  date of  any  offshore drilling  rig  or other  vessel
provided  in the most recent valuation report delivered in connection with
Section 7.11, or in the case two (2) reports have been supplied as of such
date, the arithmetic mean of the values provided in such reports.

          "Material   Adverse   Effect"  shall   mean,   unless  specified
otherwise, to affect in a material manner the ability of a Credit Party to
perform its  respective obligations  under  this Agreement,  the  Security
Documents or the Subsidiary Guaranty.

          "Maturity Date" shall mean October 18, 2001.

          "Minimum Borrowing  Amount" shall mean (i)  for Borrowings under
the Tranche A Facility and the Tranche C Facility, $2,000,000 and (ii) for
Borrowings under  the Tranche  B Facility, $2,000,000  or, in the  case of
Pound Sterling Loans, the number of  Pounds Sterling which, at the time of
such Borrowing, yields a US Dollar Equivalent of $2,000,000.

          "Mortgage" shall have the meaning provided in Section 5.08(a).

          "Mortgaged  Rigs"  shall  mean  and  include  the  US  Rigs, the
Bahamian  Rigs,  the  Liberian Rigs  and  any  replacement  rig or  vessel
mortgaged  pursuant  to  the  proviso   contained  in  the  definition  of
"Collateral Disposition".

          "Mortgages" shall mean the US Fleet Mortgage, the Liberian Fleet
Mortgage and the Bahamian Mortgages.

          "Non-Defaulting  Bank"  shall  mean  each  Bank  other  than   a
Defaulting Bank.

          "Non-Recourse Indebtedness"  shall  mean Indebtedness  of  which
neither  Holdings, nor any of  its Subsidiaries (without  giving effect to
the  current status of  the obligor thereunder) is  liable or obligated in
any manner.<PAGE>


          "Note" shall have the meaning provided in Section 1.05(a).

          "Notice of Borrowing" shall have the meaning provided in Section
1.03.

          "Notice of  Conversion"  shall  have  the  meaning  provided  in
Section 1.06.

          "Notice Office"  shall mean  the  office of  the  Administrative
Agent  at 11 West 42nd Street, 7th Floor, New York, New York 10036 or such
other  office as the Administrative  Agent may designate  to the Borrowers
from time to time.

          "Obligations"  shall  mean  all  amounts,  direct  or  indirect,
contingent  or absolute,  of every  type or  description, and at  any time
existing, owing to the  Administrative Agent, the Collateral Agent  or any
Bank pursuant to the terms of this Agreement or any other Credit Document.

          "Parent" shall have the meaning provided  in the first paragraph
of this Agreement.

          "Participant"  shall  have  the   meaning  provided  in  Section
2.04(a). 

          "PBGC"  shall mean  the  Pension  Benefit  Guaranty  Corporation
established pursuant to Section 4002 of ERISA, or any successor thereto.

          "Permitted Liens" shall mean Liens described in Section  8.03(a)
through (i).

          "Person" shall mean any individual,  partnership, joint venture,
firm,  corporation,   association,  trust  or  other   enterprise  or  any
government  or   political  subdivision  or  any   agency,  department  or
instrumentality thereof.

          "Plan" shall  mean any multiemployer or  single-employer plan as
defined in Section 4001 of ERISA, which is maintained or contributed to by
(or  to which  there is  an  obligation to  contribute of)  Holdings or  a
Subsidiary of Holdings or an ERISA Affiliate.

          "Pledge Agreement" shall  have the meaning  provided in  Section
5.11.

          "Pounds Sterling" shall  mean freely transferrable  lawful money
of the United Kingdom.

          "Pound Sterling Loan"   shall mean a Tranche B  Loan denominated
in Pounds Sterling.

          "Pricing Ratio"  shall mean  the  ratio of  Consolidated  Funded
Indebtedness as  calculated on the  last day  of the  fiscal quarter  last
ended  to Consolidated EBITDA for  the preceding twelve  (12) month period
ended on the last day of the fiscal quarter last ended.  

          "Prime Rate" shall mean  the rate which CBK announces  from time
to time as  its prime lending rate, the  Prime Rate to change when  and as
such prime lending rate changes.<PAGE>


          "RCRA" shall mean the Resource Conservation and Recovery Act, as
amended, 42 U.S.C. Section 6901 et seq.

          "Real Property" of any Person shall mean all of the right, title
and interest  of such Person  in and  to land, improvements  and fixtures,
including Leaseholds.

          "Register" shall have the meaning provided in Section 12.16.

          "Regulation D" shall mean Regulation D of the Board of Governors
of the  Federal Reserve  System as  from time to  time in  effect and  any
successor to all or a portion thereof establishing reserve requirements.

          "Regulation U" shall mean Regulation U of the Board of Governors
of the Federal  Reserve System  as from  time to  time in  effect and  any
successor to all or a portion thereof establishing margin requirements.

          "Replaced Bank" shall have the meaning provided in Section 1.13.

          "Replacement Bank" shall  have the meaning  provided in  Section
1.13.

          "Reportable Event"  shall mean  an  event described  in  Section
4043(c)  of ERISA with  respect to  a Plan other  than those  events as to
which the 30-day notice  period is waived under subsection  .13, .14, .16,
 .18, .19 or .20 of PBGC Regulation Section 2615.

          "Required Banks"  shall mean Non-Defaulting  Banks including the
Co-Agents,  the sum  of whose  outstanding Tranche  A Commitments  (or, if
after  the Total  Tranche A  Commitment  has been  terminated, outstanding
Tranche  A Loans and Adjusted Tranche A  Percentage of Tranche A Letter of
Credit Outstandings), plus outstanding Tranche B Commitments (or, if after
the  Total Tranche  B  Commitment  has  been  terminated,  the  Tranche  B
Outstandings  calculated in  accordance with  Section 1.01(d)),  plus out-
standing  Tranche  C  Commitments  (or,  if  after  the  Total  Tranche  C
Commitment has been  terminated, outstanding Tranche C  Loans and Adjusted
Tranche  C Percentage  of Tranche  C Letter  of Credit  Outstandings) con-
stitute  greater than  50% of  the  sum of  the Adjusted  Total Tranche  A
Commitment (or, if after  the Total Tranche A Commitment has  been termin-
ated, the total of outstanding Tranche A Loans of Non-Defaulting Tranche A
Banks and the aggregate Adjusted Tranche A Percentages of all Non-Default-
ing Tranche A Banks of  the total Tranche A Letter of  Credit Outstandings
at such time) plus the  Total Tranche B Commitment (or, if after the Total
Tranche B Commitment has been terminated, the total of outstanding Tranche
B  Loans of  Non-Defaulting  Tranche B  Banks),  plus the  Adjusted  Total
Tranche C Commitment (or, if after the Total Tranche C Commitment has been
terminated, the  total of outstanding  Tranche C  Loans of  Non-Defaulting
Tranche C Banks  and the aggregate Adjusted  Tranche C Percentages  of all
Non-Defaulting Tranche  C Banks of  the total  Tranche C Letter  of Credit
Outstandings at such time).

          "Restatement Effective Date" shall have the meaning provided  in
Section 12.10.

          "Restricted Subsidiary" shall mean the Borrowers, the Borrowers'
Subsidiaries and any Subsidiary (other  than the Parent) with a direct  or
indirect ownership interest in any Borrower.<PAGE>


          "Scheduled Commitment Reduction" shall have the meaning provided
in Section 3.03(b).

          "SEC"  shall mean the Securities  and Exchange Commission or any
successor thereto.

          "Section  4.04(b)(ii)  Certificate"   shall  have  the   meaning
provided in Section 4.04(b)(ii).

          "Secured  Creditors"  shall have  the meaning  set forth  in the
Security Documents.

          "Security Agreement" shall have the meaning provided in  Section
5.07.

          "Security Agreement Collateral"  shall mean all  "Collateral" as
defined in the Security Agreement.

          "Security  Documents"  shall  mean  and  include   the  Security
Agreement, the Pledge Agreement and each Mortgage.

          "Security Trustee"  shall mean Christiania Bank  og Kreditkasse,
New  York Branch, as  trustee for the  Banks with respect to  the US Fleet
Mortgage, and any successor trustee appointed in accordance with the terms
hereof.

          "Stated  Amount" of each Letter of Credit shall mean the maximum
available to be drawn thereunder (regardless of whether any conditions for
drawing could then be met).

          "Subsidiary" of  any  Person  shall mean  and  include  (i)  any
corporation more than 50% of whose stock of any class or classes having by
the  terms thereof  ordinary  voting  power to  elect  a  majority of  the
directors of such corporation (irrespective of whether or  not at the time
stock of any class or classes of such corporation shall have or might have
voting power by reason of the happening of any contingency) is at the time
owned  by such Person directly or indirectly through Subsidiaries and (ii)
any  partnership, association, joint venture or other entity in which such
Person  directly or indirectly through  Subsidiaries, has more  than a 50%
equity interest  at the time,  PROVIDED that, with respect  to any Person,
"Subsidiary" shall not include any Unrestricted Subsidiary of such Person.
Unless otherwise expressly provided, all references herein to "Subsidiary"
shall mean a Subsidiary of Holdings.

          "Subsidiary Guarantor"  shall mean ENSCO Offshore  Company II, a
Delaware corporation.

          "Substitute Basis" shall  have the meaning  provided in  Section
1.09(b).

          "Taxes" shall have the meaning provided in Section 4.04(a).

          "Total  Capitalization" shall  mean,  at any  time,  the sum  of
Consolidated Funded Indebtedness and Consolidated Net Worth at such time.

          "Total  Commitment"  shall mean,  at any  time,  the sum  of the
Commitments of each of the Banks.<PAGE>


          "Total Tranche A Commitment" shall mean the sum of the Tranche A
Commitments of each Tranche A Bank.

          "Total Tranche C Commitment" shall mean the sum of the Tranche C
Commitments of each Tranche C Bank.

          "Total Tranche B Commitment" shall mean the sum of the Tranche B
Commitments of each Tranche B Bank.

          "Total  Loss"  shall mean  any "Total  Loss"  as defined  in any
Mortgage.

          "Total  Unutilized Commitment" shall mean,  at any time, (i) the
Total Commitment at such time less (ii) the sum of the aggregate principal
amount of all Loans at such time plus the Letter of Credit Outstandings at
such time.

          "Tranche"  shall mean  the respective  Facility  and Commitments
used  to make  Loans  hereunder,  with  there  being  three  (3)  separate
Tranches, i.e. Tranche A Loans, Tranche B Loans and Tranche C Loans.

          "Tranche   A  Bank"  shall  mean  any  Bank  with  a  Tranche  A
Commitment.

          "Tranche A Commitment"  shall mean, with  respect to each  Bank,
the amount set  forth opposite such Bank's name in  Annex I directly below
the column  entitled "Tranche A Commitment" as the same may be (i) reduced
from time to  time pursuant to  Sections 3.02(a), 3.03,  and/or 9 or  (ii)
adjusted from time to time as a  result of (x) assignments to or from such
Bank  pursuant  to Section  12.04 or  (y) an  election  of Borrower  A and
Borrower C under Section 3.02(b).

          "Tranche  A  Facility"  shall  mean  the  credit  facility  made
available  to Borrower A  hereunder, as evidenced  by the  Total Tranche A
Commitment.

          "Tranche  A Letter of Credit" shall have the meaning provided in
Section 2.01(a).

          "Tranche A  Letter of  Credit Outstandings"  shall mean, at  any
time, the sum of, without duplication, (i) the aggregate Stated Amount  of
all outstanding  Tranche A Letters of Credit and (ii) the aggregate amount
of all Unpaid Drawings not theretofore repaid in respect of  all Tranche A
Letters of Credit.

          "Tranche A Loans"  shall have  the meaning  provided in  Section
1.01(a) of this Agreement.

          "Tranche  A Note"  shall have  the meaning  provided  in Section
1.05(a).

          "Tranche  A  Participant" shall  have  the  meaning provided  in
Section 2.04(a).

          "Tranche A Percentage" shall  mean for each Bank  the percentage
obtained by dividing such Bank's Tranche A Commitment by the Total Tranche
A Commitment, PROVIDED  that if the  Total Tranche A  Commitment has  been<PAGE>


terminated, the Tranche A Percentage  of each Bank shall be determined  by
dividing such  Bank's  Tranche  A  Commitment immediately  prior  to  such
termination  by the Total Tranche  A Commitment immediately  prior to such
termination.

          "Tranche  A Unpaid Drawing"  shall have the  meaning provided in
Section 2.03(a).

          "Tranche  B  Bank"  shall  meany  any  Bank  with  a  Tranche  B
Commitment.

          "Tranche  B Commitment" shall  mean, with respect  to each Bank,
the  amount set forth opposite such Bank's  name in Annex I directly below
the column entitled "Tranche B Commitment"  as the same may be (i) reduced
from  time to time  pursuant to Sections  3.02(a), 3.03, and/or  9 or (ii)
adjusted from time to time as a result of (x) assignments  to or from such
Bank pursuant to Section 12.04.

          "Tranche  B  Facility"  shall  mean  the  credit  facility  made
available  to Borrower  B hereunder, as  evidenced by the  Total Tranche B
Commitment.

          "Tranche B  Loans" shall  have the  meaning provided  in Section
1.01(b) of this Agreement.

          "Tranche B  Note" shall  have the  meaning  provided in  Section
1.05(a).

          "Tranche B  Outstandings" shall  have  the meaning  provided  in
Section 1.01(d).

          "Tranche   C  Bank"  shall  mean  any  Bank  with  a  Tranche  C
Commitment.

          "Tranche C  Commitment" shall mean,  with respect to  each Bank,
the amount set forth opposite  such Bank's name in Annex I  directly below
the column entitled "Tranche C Commitment" as the same may  be (i) reduced
from time  to time pursuant  to Sections 3.02(a),  3.03, and/or 9  or (ii)
adjusted from time to time as a result of assignments to or from such Bank
pursuant to Section 12.04 or (iii) an election of Borrower  C and Borrower
A under Section 3.02(b).

          "Tranche  C  Facility"  shall  mean  the  credit  facility  made
available to  Borrower C hereunder,  as evidenced  by the Total  Tranche C
Commitment.

          "Tranche  C Letter of Credit" shall have the meaning provided in
Section 2.01(a).

          "Tranche C  Letter of  Credit Outstandings"  shall mean,  at any
time, the sum of, without duplication, (i) the aggregate  Stated Amount of
all outstanding Tranche C Letters of Credit and (ii) the aggregate  amount
of all Unpaid Drawings not theretofore  repaid in respect of all Tranche C
Letters of Credit.

          "Tranche C  Loans" shall have  the meaning  provided in  Section
1.01(c) of this Agreement.<PAGE>

          "Tranche  C  Note" shall  have the  meaning provided  in Section
1.05(a).

          "Tranche  C  Participant" shall  have  the  meaning provided  in
Section 2.04(b).

          "Tranche C  Percentage" shall mean for each  Bank the percentage
obtained by dividing such Bank's Tranche C Commitment by the Total Tranche
C  Commitment, PROVIDED  that if the  Total Tranche C  Commitment has been
terminated,  the Tranche C Percentage of each  Bank shall be determined by
dividing such  Bank's  Tranche  C  Commitment immediately  prior  to  such
termination  by the Total Tranche  C Commitment immediately  prior to such
termination.

          "Tranche  C Unpaid Drawing"  shall have the  meaning provided in
Section 2.03(a).

          "Type"  shall mean any type  of Loan determined  with respect to
the  interest option  applicable  thereto,  i.e.,  a  Base  Rate  Loan  or
Eurodollar Loan.

          "UCC" shall mean the Uniform Commercial Code.

          "UK Payment Office" shall mean Christiania Bank og  Kreditkasse,
London  Branch, London,  England for  the account  of Christiania  Bank og
Kreditkasse, New York Branch, Account No.  06543101, Ref:  ENSCO Loan  (or
such other account as the Administrative Agent may designate.

          "Unpaid Drawing"  shall have  the  meaning provided  in  Section
2.03(a).

          "Unrestricted  Subsidiary"  shall  mean any  direct  or indirect
Subsidiary of Holdings (other  than a Restricted Subsidiary) which  is the
obligor with respect to exclusively Non-Recourse Indebtedness.

          "Unutilized Commitment" for  each Bank with  a Commitment  under
the respective  Tranche, shall  mean the excess  of (i) the  Commitment of
such Bank under such  Tranche over (ii) the sum of  (x) the aggregate out-
standing principal amount  of Loans made by  such Bank under such  Tranche
plus, in the  case of the Tranche  A Facility and the Tranche  C Facility,
(y) an  amount  equal to  such  Bank's Adjusted  Tranche  A Percentage  or
Adjusted Tranche C Percentage, whichever the case may be, of the Tranche A
Letter   of  Credit  Outstandings  or  the  Tranche  C  Letter  of  Credit
Outstandings, respectively, at such time.

          "US Borrower" shall mean and include Borrower A and Borrower C.

          "US  Dollar Equivalent" shall mean, at the time of determination
thereof,  the  amount of  US Dollars  necessary  to purchase  the required
amount of Pounds Sterling at the  spot exchange rate therefor as quoted by
the Administrative  Agent as of 11:00  A.M. (London time) on  the date two
(2) Business Days prior to the date of any determination thereof.

          "US Dollar Loan" shall mean any Loan denominated in US Dollars.

          "US Dollars" and "$" shall mean freely transferable lawful money
of the United States.<PAGE>


          "US Fleet Mortgage" shall  have the meaning provided  in Section
5.08(a).

          "US Payment Office" shall mean The  Bank of New York, New  York,
(ABA  021000018) for the account  of Christiania Bank  og Kreditkasse, New
York Branch, Account No. 8026120277, Ref:  ENSCO Loan.

          "US Rigs" shall mean the following offshore drilling vessels: 

            Name         Official No.
          --------       -----------

          ENSCO 68         574668
          ENSCO 81         606512
          ENSCO 82         602912
          ENSCO 83         605536
          ENSCO 84         637544
          ENSCO 86         643110
          ENSCO 87         648969
          ENSCO 88         645637
          ENSCO 89         652440
          ENSCO 90         647859
          ENSCO 93         651385
          ENSCO 94         638685
          ENSCO 95         642112
          ENSCO 98         589096
          ENSCO 99         682070

          "Voting Stock" shall mean, with respect to any  corporation, the
outstanding  stock   of  all  classes  (or   equivalent  interests)  which
ordinarily,  in the absence of  contingencies, entitles holders thereof to
vote  for  the  election  of  directors  (or  Persons  performing  similar
functions) of  such corporation, even though the right so to vote has been
suspended by the happening of such a contingency.

          "Wholly-Owned  Subsidiary"   of  any   Person  shall   mean  any
Subsidiary  of such Person to the extent all of the capital stock or other
ownership interests  in such Subsidiary, other  than directors' qualifying
shares or  shares held by a nominee or in  trust for such Person, is owned
directly or indirectly by such Person.

          "Working  Capital Ratio"  shall mean  the ratio  of Consolidated
Current Assets to Consolidated Current Liabilities.

          "Written"  or  "in  writing"  shall mean  any  form  of  written
communication  or  a  communication   by  means  of  telex   or  facsimile
transmission.

          SECTION 11.  THE ADMINISTRATIVE AGENT AND THE SECURITY TRUSTEE.

          11.01  Appointment  of the Administrative Agent and the Security
Trustee.  (a)  The Banks hereby designate Christiania Bank og Kreditkasse,
New York Branch as Administrative Agent  to act as specified herein and in
the  other Credit Documents.  Each Bank hereby irrevocably authorizes, and
each holder  of any Note  by the acceptance  of such Note  shall be deemed
irrevocably  to authorize, the Administrative Agent to take such action on
its  behalf under  the  provisions of  this  Agreement, the  other  Credit<PAGE>


Documents and any other  instruments and agreements referred to  herein or
therein and  to exercise such powers and  to perform such duties hereunder
and  thereunder  as  are specifically  delegated  to  or  required of  the
Administrative Agent by the terms hereof and thereof and such other powers
as  are  reasonably incidental  thereto.    The Administrative  Agent  may
perform any of its duties hereunder by or through its respective officers,
directors, agents, employees or Affiliates. 

          (b)  Each of the Banks irrevocably appoints Christiania Bank  og
Kreditkasse, New York Branch as Security Trustee solely for the purpose of
holding legal title to  the US Fleet Mortgage on behalf of  the Banks with
regard to the (i) security, powers, rights, titles, benefits and interests
(both present and future) constituted by and conferred on the Banks or any
of them  or for  the benefit  thereof under  or pursuant to  the US  Fleet
Mortgage  (including, without  limitation, the  benefit of  all covenants,
undertakings, representations, warranties  and obligations given,  made or
undertaken  to  any Bank  in  the  US Fleet  Mortgage),  (ii)  all moneys,
property and other assets paid or transferred to or vested  in any Bank or
any agent of any Bank or received or recovered by any Bank or any agent of
any Bank  pursuant to,  or  in connection  with,  the US  Fleet  Mortgage,
whether from any Borrower or  any Guarantor or any other Person  and (iii)
all money, investments, property and other assets at any time representing
or deriving from any of the foregoing, including  all interest, income and
other  sums at any time received or receivable by any Bank or any agent of
any Bank in respect of the same (or any part thereof).  CBK hereby accepts
such appointment as Security Trustee.

          (c)  For purposes  of this Section 11,  the term "Administrative
Agent"  shall   include  CBK  in   its  capacity   as  Collateral   Agent,
Administrative Agent and Security Trustee.

          11.02  Nature  of Duties.   The  Administrative Agent  shall not
have  any duties or responsibilities  except those expressly  set forth in
this Agreement and the other Credit Documents.  Neither the Administrative
Agent  nor any of its respective officers, directors, agents, employees or
Affiliates shall be liable for any  action taken or omitted by it  or them
hereunder or under  any other Credit Document or in connection herewith or
therewith,  unless  caused by  its or  their  gross negligence  or willful
misconduct.   The duties of  the Administrative Agent  shall be mechanical
and administrative in nature;  the Administrative Agent shall not  have by
reason  of this  Agreement  or  any  other  Credit  Document  a  fiduciary
relationship in respect of any Bank or the holder of any Note; and nothing
in  this Agreement or any other Credit  Document, expressed or implied, is
intended to or shall be so  construed as to impose upon the Administrative
Agent  any obligations in  respect of this  Agreement or  any other Credit
Document except as expressly set forth herein or therein.

          11.03  Lack of Reliance on the Administrative Agent.   Independ-
ently  and without reliance upon  the Administrative Agent,  each Bank and
the  holder of each Note, to the extent it deems appropriate, has made and
shall  continue to  make  (i) its  own  independent investigation  of  the
financial  condition and  affairs  of  Holdings  and its  Subsidiaries  in
connection with the making and  the continuance of the Loans  and issuance
and/or participation  in Letters of Credit and the taking or not taking of
any  action in  connection  herewith and  (ii) its  own  appraisal of  the
creditworthiness of Holdings and its Subsidiaries and, except as expressly
provided  in this Agreement, the  Administrative Agent shall  not have any<PAGE>


duty  or responsibility,  either initially  or on  a continuing  basis, to
provide  any  Bank or  the holder  of any  Note with  any credit  or other
information  with  respect thereto,  whether  coming  into its  possession
before  the making of the  Loans or at any time  or times thereafter.  The
Administrative Agent shall not be responsible to any Bank or the holder of
any  Note for  any recitals,  statements, information,  representations or
warranties  herein  or  in  any  document,  certificate  or  other writing
delivered in  connection herewith  or  for the  execution,  effectiveness,
genuineness, validity, enforceability, perfection,  collectibility, prior-
ity  or sufficiency of this Agreement or  any other Credit Document or the
financial condition of  Holdings and  its Subsidiaries or  be required  to
make any inquiry concerning either the performance or observance of any of
the terms, provisions or conditions of this Agreement or any  other Credit
Document, or the financial  condition of Holdings and its  Subsidiaries or
the existence or possible existence of any Default or Event of Default.

          11.04  Certain  Rights  of the  Administrative  Agent.   If  the
Administrative Agent shall  request instructions from  the Required  Banks
with respect to any act or action (including failure to act) in connection
with this Agreement or any other Credit Document, the Administrative Agent
shall be  entitled to refrain from  such act or taking  such action unless
and  until the Administrative Agent  shall have received instructions from
the Required Banks; and the Administrative Agent shall not incur liability
to any Person by reason of so refraining.  Without limiting the foregoing,
neither any Bank nor the holder of any Note shall have any right of action
whatsoever  against   the  Administrative  Agent   as  a  result   of  the
Administrative Agent acting  or refraining from acting  hereunder or under
any  other  Credit Document  in accordance  with  the instructions  of the
Required Banks.

           11.05  Reliance.  The Administrative Agent shall be entitled to
rely, and shall  be fully  protected in relying,  upon any note,  writing,
resolution, notice, statement, certificate, telex, teletype  or telecopier
message, cablegram,  radiogram,  order  or  other  document  or  telephone
message signed,  sent or made by any  Person that the Administrative Agent
believed to be the proper  Person, and, with respect to all  legal matters
pertaining to this  Agreement and any other Credit Document and its duties
hereunder  and  thereunder,  upon  advice  of  counsel  selected   by  the
Administrative Agent  (which  may  be  counsel  for  Holdings  and/or  any
Borrower).

          11.06  Indemnification.  To the extent the Administrative  Agent
is  not reimbursed  and  indemnified  by  any  Borrower,  the  Banks  will
reimburse and indemnify the  Administrative Agent, in proportion to  their
respective "percentages"  as used in  determining the Required  Banks, for
and  against  any  and  all  liabilities,  obligations,  losses,  damages,
penalties, claims,  actions, judgments,  suits,  costs, expenses  or  dis-
bursements of whatsoever  kind or nature which may be imposed on, asserted
against  or  incurred  by  the  Administrative  Agent  in  performing  its
respective duties hereunder or under any other Credit Document, in any way
relating to or arising out of this Agreement or any other Credit Document;
PROVIDED that no Bank shall be liable for any portion of such liabilities,
obligations,  losses,  damages,  penalties,  claims,  actions,  judgments,
suits, costs, expenses or disbursements resulting from the  Administrative
Agent's gross negligence or willful misconduct.<PAGE>


          11.07  The  Administrative Agent  in  Its  Individual  Capacity.
With respect to  its obligation to  make Loans under  this Agreement,  the
Administrative Agent shall have the rights and powers specified herein for
a "Bank" and may exercise the same rights and powers as though it were not
performing the  duties specified herein;  and the term  "Banks," "Required
Banks," "holders of Notes" or any similar  terms shall, unless the context
clearly otherwise indicates, include the Administrative Agent in its indi-
vidual  capacity.  The Administrative Agent may accept deposits from, lend
money to,  and generally engage  in any  kind of banking,  trust or  other
business with Holdings or  its Subsidiaries or any Affiliate thereof as if
it were  not performing the duties  specified herein, and may  accept fees
and other consideration from Holdings or any of  its Subsidiaries for ser-
vices  in connection with this  Agreement and otherwise  without having to
account for the same to the Banks.

          11.08  Holders.  The Administrative Agent may deem and treat the
payee of any Note as  the owner thereof for all purposes hereof unless and
until a written notice of the assignment, transfer or endorsement thereof,
as  the case may be, shall have  been filed with the Administrative Agent.
Any request, authority or consent of any Person who, at the time of making
such  request or giving  such authority or  consent, is the  holder of any
Note shall be conclusive and binding on any subsequent holder, transferee,
assignee or indorsee,  as the case may be, of such  Note or of any Note or
Notes issued in exchange therefor.

           11.09  Resignation  by  the Administrative  Agent.    (a)   The
Administrative  Agent may resign from the performance of all its functions
and duties hereunder and/or  under the other Credit Documents at  any time
by giving 15 Business Days' prior  written notice to the Borrowers and the
Banks.   Such  resignation shall  take  effect upon  the appointment  of a
successor Administrative Agent pursuant to clauses (b) and (c) below or as
otherwise provided below.

          (b)  Upon  any such  notice of  resignation, the  Required Banks
shall appoint a successor Administrative Agent hereunder or thereunder who
shall be a commercial  bank or trust company reasonably  acceptable to the
Borrowers.

          (c)  If  a successor Administrative Agent shall not have been so
appointed within such  15 Business Day  period, the Administrative  Agent,
with  the consent  of  the  Borrowers,  shall  then  appoint  a  successor
Administrative Agent who shall serve as Administrative  Agent hereunder or
thereunder  until such time, if any, as  the Required Banks appoint a suc-
cessor Administrative Agent as provided above.

          (d)  If  no successor  Administrative Agent  has  been appointed
pursuant  to clause (b)  or (c) above  by the 20th  Business Day after the
date such notice of resignation was given by the Administrative Agent, the
Administrative Agent's resignation shall become effective and the Required
Banks  shall thereafter perform all the duties of the Administrative Agent
hereunder and/or under any other Credit Document until such  time, if any,
as the Required Banks appoint a successor Administrative Agent as provided
above.

          SECTION 12.  MISCELLANEOUS.<PAGE>


          12.01  Payment of  Expenses, etc.  The Borrowers agree  to:  (i)
whether  or not the transactions herein  contemplated are consummated, pay
all reasonable  out-of-pocket costs  and  expenses of  the  Administrative
Agent  in  connection with  the  negotiation,  preparation, execution  and
delivery  of  the  Credit  Documents and  the  documents  and  instruments
referred  to therein and any amendment, waiver or consent relating thereto
(including, without  limitation, the reasonable fees  and disbursements of
White & Case  and special maritime counsel Watson,  Farley & Williams) and
of the Administrative Agent and the Collateral Agent and, after the occur-
rence and during the continuance of an Event of Default, each of the Banks
in  connection  with  the enforcement  of  the  Credit  Documents and  the
documents   and  instruments  referred   to  therein  (including,  without
limitation, the actual  reasonable fees and  disbursements of counsel  for
the  Administrative  Agent  and,  after  the  occurrence  and  during  the
continuance of an Event  of Default for each  of the Banks); (ii)  pay and
hold each of  the Banks harmless from and against any  and all present and
future stamp and other similar taxes with respect to the foregoing matters
and save  each of the  Banks harmless  from and against  any and all  lia-
bilities with respect to  or resulting from  any delay or omission  (other
than to the extent attributable to such Bank) to pay such taxes; and (iii)
indemnify each  Bank  (including in  its  capacity as  the  Administrative
Agent, Letter of  Credit Issuer Collateral  Agent or Collateral  Trustee),
its officers, directors,  employees, representatives and  agents from  and
hold each of them  harmless against any and all  liabilities, obligations,
losses,  damages,  penalties,  claims, actions,  judgments,  suits, costs,
expenses or disbursements  of whatsoever kind or  nature which may  be im-
posed on, asserted  against or incurred by any of them  as a result of, or
arising  out of,  or  in any  way related  to, or  by  reason of,  (a) any
investigation,  litigation or other proceeding (whether or not any Bank is
a party thereto) related  to the entering  into and/or performance of  any
Credit Document or the use of the  proceeds of any Loans hereunder or  the
consummation of  any transactions  contemplated  in any  Credit  Document,
whether  initiated by any Borrower or any other Person, including, without
limitation, the actual  reasonable fees and  disbursements of counsel  in-
curred in  connection with  any such  investigation,  litigation or  other
proceeding (but excluding any such losses, liabilities, claims, damages or
expenses to  the extent  incurred by  reason of  the  gross negligence  or
willful misconduct of  the Person to be indemnified) or  (b) the actual or
alleged presence  of  Hazardous  Materials  in  the  air,  surface  water,
groundwater, surface or subsurface of any Real Property, offshore drilling
rig,  facility,  vessel  or location  at  any time  owned  or  operated by
Holdings or any of its Subsidiaries, the  generation, storage, transporta-
tion or disposal  of Hazardous  Materials at any  Real Property,  offshore
drilling rig, facility,  vessel or location at any time  owned or operated
by  Holdings or any  of its Subsidiaries,  the non-compliance  of any Real
Property,  offshore drilling rig, facility, vessel or location at any time
owned or  operated by Holdings  or any of  its Subsidiaries with  federal,
state and local  laws, regulations, and  ordinances (including  applicable
permits  thereunder)  applicable  to  any  such  Real  Property,  offshore
drilling rig,  facility, vessel  or location,  or any  Environmental Claim
asserted  against Holdings, any of its Subsidiaries, or any Real Property,
offshore drilling rig,  facility, vessel or location at  any time owned or
operated by  Holdings or any of its Subsidiaries, including, in each case,
without limitation,  the  actual  reasonable  fees  and  disbursements  of
counsel  and  other  consultants  incurred  in connection  with  any  such
investigation, litigation  or other proceeding (but  excluding any losses,
liabilities,  claims, damages or expenses to the extent incurred by reason<PAGE>


of  the  gross  negligence  or willful  misconduct  of  the  Person  to be
indemnified).  To  the extent that  the undertaking to  indemnify, pay  or
hold  harmless the  Administrative  Agent or  any  Bank set  forth  in the
preceding sentence may be unenforceable because it is violative of any law
or public policy, each Borrower shall make the maximum contribution to the
payment and satisfaction of  each of the indemnified liabilities  which is
permissible under applicable law.

          12.02  Right of  Setoff.  In  addition  to  any  rights  now  or
hereafter granted under  applicable law  or otherwise, and  not by way  of
limitation of  any such rights, if  an Event of Default  then exists, each
Bank is hereby authorized  at any time or from time  to time, without pre-
sentment,  demand, protest or other notice of  any kind to any Borrower or
to any other Person, any such notice being hereby expressly waived, to set
off and to appropriate and apply any and all deposits (general or special)
and  any  other Indebtedness  at  any  time held  or  owing  by such  Bank
(including  without  limitation  by branches  and  agencies  of  such Bank
wherever located)  to or for  the credit  or the account  of any  Borrower
against and on account of the Obligations and liabilities of such Borrower
to  such Bank  under  this Agreement  or  under any  of  the other  Credit
Documents, including, without limitation, all interests in Obligations  of
such Borrower purchased by such Bank pursuant to Section 12.06(b), and all
other claims of any nature or description arising out of or connected with
this  Agreement or any other  Credit Document, irrespective  of whether or
not such  Bank shall  have made  any  demand hereunder  and although  said
Obligations, liabilities or claims, or any of them, shall be contingent or
unmatured.

          12.03  Notices.  (a)   Except  as  otherwise expressly  provided
herein,  all notices and other communications provided for hereunder shall
be in writing  (including telex or  telecopier communication) and  mailed,
telecopied  or delivered,  if  to Holdings  or  its Subsidiaries,  at  the
address  specified opposite its signature  below or in  the other relevant
Credit Documents,  as the  case may be;  if to  any Bank,  at its  address
specified for such Bank on Annex II; or, at such other address as shall be
designated by any party in  a written notice to the other  parties hereto.
All such notices and communications shall be effective when received.

          (b)  Without  in any way limiting the obligation of any Borrower
to  confirm in  writing  any  telephonic  notice  permitted  to  be  given
hereunder,  the Administrative Agent may, prior to receipt of written con-
firmation,  act without liability upon the basis of such telephonic notice
believed  by  the  Administrative Agent  in  good  faith  to  be  from  an
Authorized Officer  of any  Borrower.   In each  such case,  the Borrowers
hereby waive the right to dispute the Administrative Agent's record of the
terms of such telephonic notice.

          12.04  Benefit  of  Agreement.  (a)  This  Agreement   shall  be
binding  upon  and inure  to  the benefit  of  and be  enforceable  by the
respective successors and assigns of the parties hereto, PROVIDED that the
Borrowers may  not assign or  transfer any of their  rights or obligations
hereunder  without the prior written consent of  the Banks.  Each Bank may
at any time  grant participations in any of its  rights hereunder or under
any of the Notes  to another financial institution,  PROVIDED that in  the
case of any such participation, the  participant shall not have any rights
under  this  Agreement  or   any  of  the  other  Credit   Documents  (the
participant's rights against such Bank in respect of such participation to<PAGE>


be those set forth in the agreement  executed by such Bank in favor of the
participant relating  thereto) and all  amounts payable  by the  Borrowers
hereunder shall be determined as  if such Bank had not sold  such partici-
pation, except that the participant shall  be entitled to the benefits  of
Sections 1.10  and 4.04  of this  Agreement to the  extent that  such Bank
would  be  entitled to  such benefits  if the  participation had  not been
entered into or sold, and, PROVIDED FURTHER, that no  Bank shall transfer,
grant or assign any  participation under which the participant  shall have
rights to  approve any amendment  to or  waiver of this  Agreement or  any
other Credit Document except  to the extent such amendment or waiver would
(i)  extend the final scheduled maturity of any Loan or Note in which such
participant is participating (it  being understood that any waiver  of the
application  of any  prepayment or the  method of  any application  of any
prepayment to, the Scheduled Commitment Reductions shall not constitute an
extension of  the final maturity date),  or reduce the rate  or extend the
time  of payment of interest or Fees  thereon (except in connection with a
waiver  of the  applicability  of any  post-default  increase in  interest
rates),  or  reduce  the  principal   amount  thereof,  or  increase  such
participant's  participating interest  in any  Commitment over  the amount
thereof  then in  effect  (it  being  understood  that  a  waiver  of  any
condition,  covenant,  Default  or Event  of  Default  or  of a  mandatory
reduction  in the Total Commitment,  or a mandatory  prepayment, shall not
constitute a change  in the terms of any Commitment),  (ii) release all or
substantially all of the Collateral or (iii) consent to the  assignment or
transfer  by any Borrower of any of  its rights and obligations under this
Agreement.

          (b)  Notwithstanding the foregoing, (x) any Bank may assign  all
or a portion of its outstanding Commitment and its  rights and obligations
hereunder to its Affiliate or to another Bank, and (y) with the consent of
the  Administrative Agent and the  affected Borrowers (which consent shall
not be unreasonably withheld), any Bank may assign all or a portion of its
outstanding  Commitment and its rights and obligations hereunder to one or
more Eligible Transferees; PROVIDED that (subject to Section 4.04  hereof)
any  such assignment  must be  made on  a pro  rata basis among  the three
Tranches.   No assignment pursuant  to the immediately  preceding sentence
shall  to  the  extent such  assignment  represents  an  assignment to  an
institution other  than one or  more Banks  hereunder, be in  an aggregate
amount less than $10,000,000 unless the entire Commitment of the assigning
Bank is so assigned.  If any Bank so sells or assigns all or a part of its
rights hereunder or under  the Notes, any  reference in this Agreement  or
the Notes to such assigning  Bank shall thereafter refer to such  Bank and
to the respective assignee to the extent of their respective interests and
the  respective  assignee shall  have, to  the  extent of  such assignment
(unless  otherwise provided therein), the  same rights and  benefits as it
would if  it were such assigning  Bank.  Each assignment  pursuant to this
Section  12.04(b) shall be effected by the assigning Bank and the assignee
Bank executing an  Assignment and Assumption Agreement.   In the  event of
any   such  assignment  (x)  to  a  commercial  bank  or  other  financial
institution not previously a  Bank hereunder, either the assigning  or the
assignee  Bank  shall  pay  to the  Administrative  Agent  a nonrefundable
assignment fee  of $3,500  and  (y) to  a Bank,  either  the assigning  or
assignee  Bank  shall  pay to  the  Administrative  Agent  a nonrefundable
assignment fee  of $1,500, and at  the time of any  assignment pursuant to
this Section  12.04(b), (i)  Annex  I shall  be deemed  to  be amended  to
reflect  the respective Commitments of the assignee (which shall result in
a  direct reduction to  the Commitment of  the assigning Bank)  and of the<PAGE>


other Banks, and (ii) if any such assignment  occurs after the Restatement
Effective Date, if requested by the assigning Bank and the  assignee Bank,
the Borrowers will issue new  Notes to the respective assignee and  to the
assigning Bank in conformity with the requirements of Section 1.05 and the
assigning  Bank  will  return  the  cancelled  Notes  to  the  appropriate
Borrower.  Each  Bank and the  Borrowers agree  to execute such  documents
(including, without limitation, amendments to this Agreement and the other
Credit Documents) as shall be necessary to effect the foregoing.   Nothing
in this  clause (b) shall prevent  or prohibit any Bank  from pledging its
Notes or Loans to a Federal Reserve Bank in  support of borrowings made by
such Bank from such Federal Reserve Bank.

          (c)  Notwithstanding any other provisions of this Section 12.04,
no  transfer or  assignment of  the interests or  obligations of  any Bank
hereunder or any grant of participation therein shall be permitted if such
transfer,  assignment or grant would  require Holdings or  any Borrower to
file a registration  statement with the SEC or to  qualify the Loans under
the "Blue Sky" laws of any State.

          (d)  Each  Bank   initially  party  to  this   Agreement  hereby
represents,  and each Person that became a  Bank pursuant to an assignment
permitted  by this  Section  12  will, upon  its  becoming  party to  this
Agreement,  represent that  it  is a  commercial  lender, other  financial
institution or other "accredited" investor  (as defined in SEC  Regulation
D) which makes  loans in the ordinary  course of its business  and that it
will  make or acquire Loans for its own  account in the ordinary course of
such business, PROVIDED that subject to the preceding clauses (a) and (b),
the disposition of any promissory notes or other evidences of or interests
in  Indebtedness held  by  such Bank  shall  at all  times  be within  its
exclusive control.

          12.05  No Waiver; Remedies Cumulative.  No  failure or delay  on
the part  of the Administrative Agent or any Bank in exercising any right,
power  or privilege hereunder  or under any  other Credit  Document and no
course  of dealing between the Credit Parties and the Administrative Agent
or  any Bank shall  operate as a  waiver thereof; nor shall  any single or
partial exercise of any right, power  or privilege hereunder or under  any
other  Credit Document preclude any  other or further  exercise thereof or
the  exercise  of  any  other  right,  power  or  privilege  hereunder  or
thereunder.    The rights  and  remedies  herein  expressly  provided  are
cumulative  and  not  exclusive  of  any  rights  or  remedies  which  the
Administrative Agent  or any Bank would  otherwise have.  No  notice to or
demand on any Credit Party  in any case shall entitle such Credit Party to
any other or further notice or demand in similar or other circumstances or
constitute a waiver of the rights of the Administrative Agent or the Banks
to  any other  or further action  in any  circumstances without  notice or
demand.

           12.06  Payments Pro Rata.  (a)  The Administrative Agent agrees
that promptly after its  receipt of each payment from or on  behalf of any
Credit Party in respect of  any Obligations of the Borrowers or  any other
Credit  Party hereunder,  it shall  distribute such  payment to  the Banks
(other than  any Bank that has  expressly waived its right  to receive its
pro rata share thereof)  pro rata based upon  their respective shares,  if
any, of the Obligations with respect to which such payment was received.<PAGE>


          (b)  Each of the  Banks agrees  that, if it  should receive  any
amount hereunder  (whether  by  voluntary  payment,  by  realization  upon
security, by  the exercise of  the right  of setoff or  banker's lien,  by
counterclaim or cross  action, by the enforcement  of any right  under the
Credit Documents, or otherwise) which is  applicable to the payment of the
principal of, or interest on, the Loans, Unpaid Drawings or Fees, of a sum
which with respect to  the related sum or sums received  by other Banks is
in a  greater proportion than the  total of such Obligation  then owed and
due  to such Bank bears to the total  of such Obligation then owed and due
to  all of  the  Banks in  accordance  with their  respective  Commitments
immediately  prior to such receipt,  then such Bank  receiving such excess
payment  shall purchase  for cash  without recourse  or warranty  from the
other  Banks an interest in the Obligations  of the Borrowers or any other
Credit Party, respectively, to  such Banks in such amount  as shall result
in a  proportional participation  by all of  the Banks in  accordance with
their respective Commitments  in such amount, PROVIDED that if  all or any
portion of such excess amount is thereafter recovered from such Bank, such
purchase shall be rescinded and the purchase price restored  to the extent
of such recovery, but without interest.

          (c)  Notwithstanding anything to the contrary contained  herein,
the provisions of the preceding Sections 12.06(a) and (b) shall be subject
to  the express  provisions of  this Agreement  which require,  or permit,
differing  payments to  be  made to  Non-Defaulting  Banks as  opposed  to
Defaulting Banks.

          12.07  Calculations;      Computations.  (a)  The      financial
statements to be furnished to the Banks pursuant hereto shall  be made and
prepared  in  accordance with  GAAP  consistently  applied throughout  the
periods involved (except as set forth in the notes thereto or as otherwise
disclosed in  writing by Holdings or the Borrowers to the Banks), PROVIDED
that except as  otherwise specifically provided  herein, all  computations
determining compliance with Section 8, including definitions used therein,
shall utilize accounting principles and policies in effect  at the time of
the  preparation of,  and in conformity  with those  used to  prepare, the
September 30,  1996 historical financial statements  of Holdings delivered
to the Banks pursuant to Section  6.09(b), except as otherwise amended  or
modified in accordance with GAAP.

          (b)  All computations  of interest and  fees hereunder shall  be
made  (i)  with respect  to  Pound  Sterling  Loans and  US  Dollar  Loans
maintained as Base Rate Loans, on the actual number of days elapsed over a
year  of 365 days and  (ii) with respect to  US Dollar Loans maintained as
Eurodollar Loans, on the actual number of days elapsed over  a year of 360
days.

          12.08  GOVERNING LAW; SUBMISSION  TO JURISDICTION; VENUE; WAIVER
OF JURY TRIAL.  (a)  THIS AGREEMENT AND THE OTHER CREDIT DOCUMENTS AND THE
RIGHTS  AND OBLIGATIONS OF THE  PARTIES HEREUNDER AND  THEREUNDER SHALL BE
CONSTRUED  IN ACCORDANCE WITH AND  BE GOVERNED BY THE LAW  OF THE STATE OF
NEW YORK.  ANY LEGAL  ACTION OR PROCEEDING WITH RESPECT TO  THIS AGREEMENT
OR  ANY OTHER CREDIT DOCUMENT MAY BE BROUGHT IN THE COURTS OF THE STATE OF
NEW YORK OR  OF THE UNITED STATES  FOR THE SOUTHERN DISTRICT OF  NEW YORK,
AND, BY EXECUTION AND DELIVERY OF THIS AGREEMENT, HOLDINGS AND EACH OF THE
BORROWERS HEREBY IRREVOCABLY ACCEPT FOR THEMSELVES AND IN RESPECT OF THEIR
PROPERTY, GENERALLY AND UNCONDITIONALLY, THE JURISDICTION OF THE AFORESAID
COURTS.  HOLDINGS  AND THE  BORROWERS FURTHER IRREVOCABLY  CONSENT TO  THE<PAGE>


SERVICE OF PROCESS  OUT OF ANY  OF THE AFOREMENTIONED  COURTS IN ANY  SUCH
ACTION OR PROCEEDING  BY THE MAILING  OF COPIES THEREOF  BY REGISTERED  OR
CERTIFIED MAIL, POSTAGE PREPAID, TO SUCH BORROWER LOCATED OUTSIDE NEW YORK
CITY  AND BY  HAND DELIVERY TO  SUCH BORROWER  IF LOCATED  WITHIN NEW YORK
CITY, AT ITS  ADDRESS FOR NOTICES PURSUANT TO SECTION  12.03, SUCH SERVICE
TO BECOME EFFECTIVE  30 DAYS  AFTER SUCH  MAILING.   NOTHING HEREIN  SHALL
AFFECT THE  RIGHT OF THE ADMINISTRATIVE  AGENT, ANY BANK OR  THE HOLDER OF
ANY NOTE  TO SERVE  PROCESS IN ANY  OTHER MANNER  PERMITTED BY  LAW OR  TO
COMMENCE LEGAL  PROCEEDINGS OR OTHERWISE  PROCEED AGAINST HOLDINGS  OR ANY
BORROWER IN ANY OTHER JURISDICTION.

          (b)  HOLDINGS AND  THE  BORROWERS HEREBY  IRREVOCABLY WAIVE  ANY
OBJECTION  WHICH THEY MAY NOW OR HEREAFTER HAVE  TO THE LAYING OF VENUE OF
ANY OF  THE  AFORESAID  ACTIONS  OR  PROCEEDINGS  ARISING  OUT  OF  OR  IN
CONNECTION WITH THIS AGREEMENT OR ANY OTHER CREDIT DOCUMENT BROUGHT IN THE
COURTS  REFERRED TO  IN CLAUSE  (A) ABOVE  AND HEREBY  FURTHER IRREVOCABLY
WAIVE  AND AGREE NOT  TO PLEAD OR  CLAIM IN ANY  SUCH COURT THAT  ANY SUCH
ACTION OR  PROCEEDING BROUGHT IN  ANY SUCH  COURT HAS BEEN  BROUGHT IN  AN
INCONVENIENT FORUM.

          (c)  EACH OF THE  PARTIES TO THIS  AGREEMENT HEREBY  IRREVOCABLY
WAIVES  ALL RIGHT  TO  A  TRIAL  BY  JURY IN  ANY  ACTION,  PROCEEDING  OR
COUNTERCLAIM  ARISING  OUT OF  OR RELATING  TO  THIS AGREEMENT,  THE OTHER
CREDIT DOCUMENTS OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY.

           12.09  Counterparts.  This  Agreement may  be  executed in  any
number of counterparts  and by  the different parties  hereto on  separate
counterparts, each of  which when so  executed and  delivered shall be  an
original, but  all of which  shall together  constitute one  and the  same
instrument.   A set  of counterparts executed  by all  the parties  hereto
shall be lodged with the Borrowers and the Administrative Agent.

          12.10  Effectiveness.  This Agreement shall become  effective on
the date (the "Restatement Effective Date") on which Holdings, the Parent,
the  Borrowers and  each of  the  Banks shall  have signed  a copy  hereof
(whether the same or  different copies) and shall have  delivered the same
to the Administrative  Agent at  the Notice Office  of the  Administrative
Agent or, in the case of the Banks, shall have given to the Administrative
Agent telephonic  (confirmed  in  writing),  written  telex  or  facsimile
transmission notice (actually received)  at such office that the  same has
been signed and mailed to it.

           12.11  Headings  Descriptive.  The  headings  of   the  several
sections and  subsections of this  Agreement are inserted  for convenience
only and  shall not in any  way affect the meaning or  construction of any
provision of this Agreement.

           12.12  Amendment  or  Waiver.  (a)  Neither this  Agreement nor
any other Credit Document nor any terms hereof or thereof  may be changed,
waived, discharged or terminated unless  such change, waiver, discharge or
termination  is  in  writing signed  by  all  affected  Borrowers and  the
Required Banks, PROVIDED that no such change, waiver, discharge or termin-
ation  shall, without  the consent of  each Bank (other  than a Defaulting
Bank)  affected thereby, (i) extend the Maturity Date (it being understood
that any waiver  of the application of any prepayment of  the Loans or the
method of  application  of  any  prepayment to  the  Scheduled  Commitment
Reductions, shall not constitute  any such extension), or reduce  the rate<PAGE>


or extend  the time  of payment  of interest  (other than as  a result  of
waiving the applicability of any post-default increase in  interest rates)
or Fees thereon, or reduce the principal amount thereof, (ii) increase the
Commitment of  any Bank over the  amount thereof then in  effect (it being
understood that a  waiver of any condition, covenant, Default  or Event of
Default shall  not constitute a change  in the terms of  any Commitment of
any Bank),  (iii) release or permit  the release of (x)  any Mortgaged Rig
from the Lien  of the respective Security Documents  (except to the extent
such Mortgaged Rig is replaced in accordance with the proviso contained in
the  definition  of  "Collateral  Disposition")  or (y)  the  Guaranty  of
Holdings, Borrower A and the Parent  pursuant to Section 13 or (except, in
the case of  both (x) and (y)  above, as expressly provided  in the Credit
Documents),  (iv) amend,  modify or  waive any  provision of  this Section
12.12  or  the   proviso  contained  in  the   definition  of  "Collateral
Disposition",  (v) reduce the  percentage specified  in the  definition of
Required  Banks  (except that,  with the  consent  of the  Required Banks,
additional extensions of credit pursuant to this Agreement may be included
in the determination of Required Banks on substantially the  same basis as
the Commitments (and  related extensions  of credit) are  included on  the
Restatement Effective Date), (vi) consent to the assignment or transfer by
any Borrower  of any of its rights and obligations under this Agreement or
(vii)  waive, change  the timing  or amount  of, or  extend any  mandatory
reduction  in  the  Total  Commitment  including,  without  limitation,  a
Scheduled Commitment  Reduction.  No provision of Sections 2 or 11, or any
other   provisions  relating  to  the  Letter  of  Credit  Issuer  or  the
Administrative  Agent  may  be   modified  without  the  consent  of   the
Administrative Agent.

          (b)    If,  in  connection  with  any  proposed change,  waiver,
discharge  or termination to  any of the  provisions of this  Agreement as
contemplated  by clauses (i) through  (vii), inclusive, of  the proviso to
Section 12.12(a), the consent  of the Required Banks  is obtained but  the
consent of one  or more of such  other Banks whose consent  is required is
not obtained, then the Borrowers shall have the right to replace each such
non-consenting Bank  or Banks (so long as  all non-consenting Banks are so
replaced) with one or  more Replacement Banks pursuant to  Section 1.13 so
long  as at  the time  of  such replacement,  each  such Replacement  Bank
consents  to  the  proposed  change,  waiver,  discharge  or  termination;
PROVIDED  that the Borrowers  shall not have  the right to  replace a Bank
solely  as  a result  of  the  exercise of  such  Bank's  rights (and  the
withholding  of any  required consent  by such  Bank) pursuant  to Section
12.12(a)(ii). 

           12.13  Survival.  All indemnities set  forth herein  including,
without  limitation, in  Section 1.10,  1.11, 2.05,  4.04, 11.06  or 12.01
shall survive the execution and delivery of this Agreement and  the making
and repayment of the Loans.

           12.14  Domicile of Loans.  Each Bank may transfer and carry its
Loans  at, to  or for  the  account of  any branch  office, subsidiary  or
Affiliate  of  such  Bank,  PROVIDED  that  the  Borrowers  shall  not  be
responsible  for costs arising under  Section 1.10 or  4.04 resulting from
any such transfer (other than  a transfer pursuant to Section  1.12(a)) to
the extent not otherwise applicable to such Bank prior to such transfer.

           12.15  Confidentiality.  Subject  to  Section 12.04,  the Banks
shall  hold all non-public  information obtained pursuant  to the require-<PAGE>


ments of this  Agreement in  accordance with its  customary procedure  for
handling confidential  information of this  nature and in  accordance with
safe  and sound  banking practices  and in any  event may  make disclosure
reasonably  required by any bona fide transferee or participant in connec-
tion  with the contemplated transfer of any Loans or participation therein
(so  long as  such transferee  or participant  agrees to  be bound  by the
provisions  of this  Section  12.15) or  as required  or requested  by any
governmental agency  or representative thereof  or pursuant to  legal pro-
cess, PROVIDED that,  unless specifically prohibited by  applicable law or
court order,  each Bank shall notify  the Borrowers of any  request by any
governmental agency or representative thereof (other than any such request
in connection with an examination of the financial  condition of such Bank
by  such  governmental agency)  for  disclosure  of  any  such  non-public
information prior to disclosure of  such information, and provided further
that in no  event shall any  Bank be obligated or  required to return  any
materials furnished by Holdings or any Subsidiary.

           12.16    Registry.     The  Borrowers   hereby  designate   the
Administrative Agent to serve as the Borrowers' agent, solely for purposes
of this Section 12.16, to maintain a register (the "Register") on which it
will record the  Commitments from time to time  of each of the  Banks, the
Loans  made by  each of  the Banks  and each  repayment in respect  of the
principal  amount of the  Loans of  each Bank.   Failure to make  any such
recordation,  or  any  error in  such  recordation  shall  not affect  the
Borrowers'  obligations in  respect of  such Loans.   With respect  to any
Bank,  the transfer of the Commitments of such  Bank and the rights to the
principal of, and interest on, any  Loan made pursuant to such Commitments
shall not be  effective until such  transfer is  recorded on the  Register
maintained by the Administrative  Agent with respect to ownership  of such
Commitments and Loans  and prior to such recordation  all amounts owing to
the transferor with  respect to  such Commitments and  Loans shall  remain
owing to the transferor.   The registration of  assignment or transfer  of
all  or  part of  any  Commitments  and Loans  shall  be  recorded by  the
Administrative  Agent  on the  Register only  upon  the acceptance  by the
Administrative Agent of a  properly executed and delivered Assignment  and
Assumption Agreement  pursuant to Section  12.04(b).  Coincident  with the
delivery  of  such   an  Assignment  and   Assumption  Agreement  to   the
Administrative Agent  for acceptance  and  registration of  assignment  or
transfer  of all or part of a Loan,  or as soon thereafter as practicable,
the  assigning or transferor Bank shall surrender the Note evidencing such
Loan, and thereupon one or more  new Notes in the same aggregate principal
amount shall  be issued to the assigning or transferor Bank and/or the new
Bank.

           12.17   Designated Senior Indebtedness.  Borrower C and each of
its Subsidiaries hereby  designates its obligations  under this  Agreement
and the  other Credit Documents  as "Designated  Senior Indebtedness"  for
purposes of, and as defined in the Dual Indenture.

          SECTION 13.  GUARANTY.

           13.01  The Guaranty.   In order  to induce the  Banks to  enter
into this Agreement and to  extend credit hereunder and in  recognition of
the direct  benefits to be received by Holdings, the Parent and Borrower A
from the proceeds of the Loans and the issuance of the Letters of  Credit,
Holdings, the  Parent  and Borrower  A  hereby  agree with  the  Banks  as
follows:    (i)  each  of  Holdings  and  the  Parent  hereby jointly  and<PAGE>


severally, unconditionally  and irrevocably guarantees as  primary obligor
and not  merely as surety  the full and  prompt payment when  due, whether
upon maturity,  by  acceleration  or otherwise,  of  any and  all  of  the
Guaranteed  Obligations of each of the Borrowers to the Secured Creditors,
and if  any or all  of the Guaranteed  Obligations of any Borrower  to the
Secured  Creditors becomes due and payable hereunder, each of Holdings and
the  Parent unconditionally  promises  to  pay  such indebtedness  to  the
Secured  Creditors,  on  order  or  demand,  together  with  any  and  all
reasonable expenses which may  be incurred by the Administrative  Agent or
the  Secured Creditors in collecting any of the Guaranteed Obligations and
(ii) Borrower  A  hereby  jointly  and severally  with  the  corresponding
obligations  of Holdings  and  the Parent  (subject  to the  operation  of
Section 2.03(b)(i)), unconditionally and irrevocably guarantees as primary
obligor and  not merely as  surety the full  and prompt payment  when due,
whether upon maturity, by acceleration or otherwise, of any and all of the
Guaranteed  Obligations  of  Borrower B  and  Borrower  C  to the  Secured
Creditors, and if  any or all of the Guaranteed  Obligations of Borrower B
and Borrower C to the Secured Creditors becomes due and payable hereunder,
Borrower  A  unconditionally  promises to  pay  such  indebtedness to  the
Secured  Creditors,  on  order  or  demand,  together  with  any  and  all
reasonable expenses which may  be incurred by the Administrative  Agent or
the Secured Creditors in collecting any of the Guaranteed Obligations.

          13.02  Bankruptcy.  Additionally,  each of Holdings, the  Parent
and Borrower  A unconditionally and irrevocably guarantees  the payment of
any  and all of the Guaranteed Obligations of  (i) in the case of Holdings
and the Parent, each of the Borrowers and (ii) in the case of  Borrower A,
Borrower B  and Borrower C, to  the Secured Creditors whether  or not then
due or  payable by  such Persons  upon the occurrence  in respect  of such
Persons of any  of the events specified in  Section 9.05, and uncondition-
ally  and irrevocably promises to  pay such Guaranteed  Obligations to the
Secured Creditors,  on order,  or demand,  in lawful  money of the  United
States.    The guaranty  by Holdings,  the Parent  and  Borrower A  of the
payment  of  any and  all of  the  Guaranteed Obligations  hereunder shall
constitute a guaranty of payment, and not of collection. 

           13.03  Nature  of Liability.   The  liability of  Holdings, the
Parent  and Borrower  A  hereunder is  exclusive  and independent  of  any
security  for or  other  guaranty of  the  Guaranteed Obligations  of  any
Borrower  whether executed  by Holdings,  the Parent  and Borrower  A, any
other guarantor or by any other  party, and the liability of Holdings, the
Parent and Borrower A hereunder  shall not be affected or impaired  by (a)
any direction as to application of payment by any Borrower or by any other
party,  or  (b) any  other continuing  or  other guaranty,  undertaking or
maximum  liability  of  a  guarantor  or of  any  other  party  as  to the
Guaranteed  Obligations  of any  Borrower,  or (c)  any  payment on  or in
reduction  of any such other  guaranty or undertaking,  or (d) any dissol-
ution, termination or  increase, decrease  or change in  personnel by  any
Borrower,  or (e)  any payment  made to  the Administrative  Agent or  the
Secured Creditors  on the indebtedness  which the Administrative  Agent or
such  Secured Creditors repays to any  Borrower pursuant to court order in
any bankruptcy, reorganization,  arrangement, moratorium  or other  debtor
relief proceeding, and Holdings, the Parent and Borrower A waive any right
to the deferral or  modification of its obligations hereunder by reason of
any such proceeding.<PAGE>


           13.04  Independent  Obligation.   The obligations  of Holdings,
the Parent and Borrower A hereunder are independent of the  obligations of
any other guarantor or any Borrowers, and a separate action or actions may
be brought and prosecuted against Holdings, the Parent and Borrower A whe-
ther or not action is brought  against any other guarantor or any Borrower
and whether  or not any other  guarantor or any Borrower be  joined in any
such action or actions.  Holdings, the Parent and Borrower A waive, to the
fullest extent permitted by law, the benefit of any statute of limitations
affecting its liability hereunder or the enforcement thereof.  Any payment
by  any Borrower or other circumstance which  operates to toll any statute
of limitations as to such Borrower  or Borrowers shall operate to toll the
statute of limitations as to Holdings, the Parent and Borrower A.

          13.05  Waiver of Notice, etc.  Holdings, the Parent and Borrower
A  hereby waive notice  of acceptance of  this Guaranty and  notice of any
liability  to  which  it  may  apply,  and  waive  promptness,  diligence,
presentment, demand  of payment, protest, notice of dishonor or nonpayment
of  any  such  liabilities,  suit  or  taking  of  other   action  by  the
Administrative  Agent,  any  Bank,  the  Letter   of  Credit  Issuer,  the
Collateral Agent or the Security Trustee against, and any other notice to,
any party liable thereon  (including Holdings, the Parent and  Borrower A,
any other guarantor or the Borrowers).

          13.06  Authorization.    Holdings,  the  Parent and  Borrower  A
authorize  the  Administrative Agent  and  the  Secured Creditors  without
notice or demand  (except as shall be  required by applicable  statute and
cannot  be waived),  and without  affecting or  impairing their  liability
hereunder, from time to time to:

          (a)  change the  manner, place  or terms of  payment of,  and/or
     change  or extend the time of payment of, renew, increase, accelerate
     or alter, any  of the Guaranteed Obligations  (including any increase
     or  decrease in the rate of interest thereon), any security therefor,
     or any liability incurred directly or indirectly in respect  thereof,
     and  the  Guaranty  herein   made  shall  apply  to  the   Guaranteed
     Obligations as so changed, extended, renewed or altered;

          (b)  take and  hold security for  the payment of  the Guaranteed
     Obligations and  sell, exchange, release, surrender,  realize upon or
     otherwise deal  with in any manner  and in any order  any property by
     whomsoever at any time  pledged or mortgaged to secure,  or howsoever
     securing, the  Guaranteed Obligations or  any liabilities  (including
     any of those  hereunder) incurred directly  or indirectly in  respect
     thereof or hereof, and/or any offset thereagainst;

          (c)  exercise or refrain from exercising any rights against  any
     Borrower or other Persons or otherwise act or refrain from acting;

          (d)  release   or  substitute   any   one  or   more  endorsers,
     guarantors, Borrowers or other obligors;

          (e)  settle or compromise any of the Guaranteed Obligations, any
     security therefor or any liability (including any of those hereunder)
     incurred directly or indirectly in respect thereof or hereof, and may
     subordinate the payment of all or any part thereof to  the payment of
     any liability (whether due or  not) of any Borrower to its  creditors
     other than the Banks;<PAGE>


          (f)  apply any sums by whomsoever paid  or howsoever realized to
     any liability or liabilities of any Borrower to the Secured Creditors
     regardless of what  liability or liabilities of Holdings,  the Parent
     and Borrower A or any Borrower remain unpaid;

          (g)  consent to or waive any breach of,  or any act, omission or
     default under, this Agreement or any of the instruments or agreements
     referred  to herein,  or otherwise  amend, modify or  supplement this
     Agreement or any of such other instruments or agreements; and/or

          (h)  take  any  other  action   which  would,  under   otherwise
     applicable  principles of  common  law,  give  rise  to  a  legal  or
     equitable discharge of Holdings,  the Parent and Borrower A  from its
     liabilities under this Section 13.

           13.07  Reliance.  It  is not necessary  for the  Administrative
Agent or the  Secured Creditors to inquire into the  capacity or powers of
any Borrower or its  Subsidiaries or the officers, directors,  partners or
agents  acting or  purporting to  act  on its  behalf, and  any Guaranteed
Obligations made or  created in  reliance upon the  professed exercise  of
such powers shall be guaranteed hereunder.

           13.08  Subordination.  Any of the indebtedness of any  Borrower
relating to the Guaranteed Obligations now or hereafter owing to Holdings,
the  Parent  and  Borrower A  is  hereby  subordinated  to the  Guaranteed
Obligations of such  Borrower owing  to the Administrative  Agent and  the
Secured Creditors; and  if the Administrative Agent so requests  at a time
when an Event  of Default exists,  all such  indebtedness relating to  the
Guaranteed  Obligations  of  any  Borrower  to  Holdings,  the Parent  and
Borrower  A shall  be collected,  enforced and  received by  Holdings, the
Parent and Borrower A for the benefit of the Secured Creditors and be paid
over to the  Administrative Agent  on behalf of  the Secured Creditors  on
account  of the  Guaranteed Obligations  of such  Borrower to  the Secured
Creditors,  but without affecting or impairing in any manner the liability
of Holdings, the Parent and Borrower  A under the other provisions of this
Guaranty.  Prior to the transfer by Holdings, the Parent and Borrower A of
any  note  or negotiable  instrument  evidencing any  of  the indebtedness
relating to the Guaranteed Obligations of any Borrower to any of Holdings,
the Parent and Borrower A,  Holdings, the Parent or Borrower A  shall mark
such note or negotiable instrument with a legend that the  same is subject
to this subordination.  

           13.09  Waiver.   (a)  Each of Holdings, the Parent and Borrower
A waives any right (except as  shall be required by applicable statute and
cannot  be  waived) to  require the  Administrative  Agent or  the Secured
Creditors to (i) proceed against any Borrower, any other guarantor  or any
other  party, (ii) proceed against  or exhaust any  security held from any
Borrower, any other guarantor or any other party or (iii) pursue any other
remedy  in  the Administrative  Agent's  or the  Secured  Creditors' power
whatsoever.    Each of  Holdings,  the Parent  and Borrower  A  waives any
defense based on or arising out of  any defense of any Borrower, any other
guarantor or any other party, other than payment in full of the Guaranteed
Obligations, based on or arising  out of the disability of  such Borrower,
any other guarantor  or any  other party, or  the unenforceability of  the
Guaranteed  Obligations or  any  part  thereof  from  any  cause,  or  the
cessation  from any cause  of the  liability of  such Borrower  other than
payment in full of the Guaranteed Obligations.  Subject to  Section 13.10,<PAGE>


the Administrative Agent and the Secured Creditors may, at their election,
foreclose on any security held by the Administrative Agent, the Collateral
Agent  or the  Secured Creditors  by one or  more judicial  or nonjudicial
sales,  whether or  not every  aspect  of any  such  sale is  commercially
reasonable (to  the extent such sale  is permitted by applicable  law), or
exercise  any other  right  or remedy  the  Administrative Agent  and  the
Secured Creditors may have against any Borrower or any other party, or any
security,  without  affecting or  impairing in  any  way the  liability of
Holdings,  the Parent  and Borrower A  hereunder except to  the extent the
Guaranteed  Obligations have been paid.  Each  of Holdings, the Parent and
Borrower A  waives any  defense arising  out of any  such election  by the
Administrative  Agent and the Secured Creditors, even though such election
operates to impair or extinguish any right of reimbursement or subrogation
or other right or remedy of Holdings, the Parent or Borrower A against any
Borrower or any other party or any security.

          (b)  Each of  Holdings, the  Parent and  Borrower  A waives  all
presentments, demands  for performance,  protests and notices,  including,
without limitation, notices of nonperformance, notices of protest, notices
of dishonor,  notices of acceptance of  this Guaranty, and  notices of the
existence,  creation   or  incurring  of  new   or  additional  Guaranteed
Obligations.  Each of Holdings, the Parent and Borrower A  assumes all re-
sponsibility  for being  and  keeping itself  informed  of the  Borrowers'
financial  condition and assets,  and of  all other  circumstances bearing
upon  the risk of nonpayment of the Guaranteed Obligations and the nature,
scope and  extent of the  risks which Holdings,  the Parent or  Borrower A
assumes and incurs hereunder, and agrees that the Administrative Agent and
the Secured Creditors shall have no duty to advise Holdings, the Parent or
Borrower  A of information known  to them regarding  such circumstances or
risks.

          13.10  Subrogation.  Holdings,  the Parent and  Borrower A  will
not exercise any rights which they may acquire by way of subrogation under
this Guaranty, by any payment  made hereunder or otherwise, until all  the
Guaranteed Obligations shall have been paid  in full.  If any amount shall
be  paid  to  Holdings,  the  Parent or  Borrower  A  on  account  of such
subrogation rights at any  time when all the Guaranteed  Obligations shall
not have  been paid in  full, such amount shall  be forthwith paid  to the
Administrative Agent on behalf of the Secured Creditors to be credited and
applied against the Guaranteed  Obligations.  If Holdings, the  Parent and
Borrower A  shall make payment to  the Administrative Agent of  all or any
part of  the  Guaranteed Obligations  and all  the Guaranteed  Obligations
shall have been  paid in  full, the Administrative  Agent and the  Secured
Creditors will execute and deliver to Holdings, the Parent and/or Borrower
A appropriate documents,  without recourse and  without representation  or
warranty, releasing this Guaranty and transferring to Holdings, the Parent
and/or  Borrower A  any and  all rights the  Administrative Agent  and the
Secured  Creditors may have against the Borrowers or necessary to evidence
the transfer by subrogation to Holdings, the Parent and Borrower  A of any
interest  in the  Guaranteed Obligations  resulting from  such payment  by
Holdings, the Parent and/or Borrower A.


                  *           *           *          *



          IN  WITNESS WHEREOF,  each of  the parties  hereto has  caused a
counterpart of  this Agreement to be duly executed and delivered as of the
date first above written.


Address:                      ENSCO INTERNATIONAL INCORPORATED

2700 Fountain Place
1445 Ross Avenue              By       /S/ ROBERT O. ISAAC
Dallas, Texas  75202            ---------------------------------
Attn: Chief Financial Officer   Name:      Robert O. Isaac
Telephone:  (214) 922-1500      Title:
Facsimile:  (214) 855-0300

                              ENSCO DELAWARE, INC.


                              By       /S/ ROBERT O. ISAAC           
                                ---------------------------------
                                Name:      Robert O. Isaac
                                Title: 



                              ENSCO OFFSHORE COMPANY


                              By       /S/ ROBERT O. ISAAC           
                                ---------------------------------
                                Name:      Robert O. Isaac
                                Title: 



                              ENSCO OFFSHORE U.K. LTD.


                              By       /S/ ROBERT O. ISAAC           
                                ---------------------------------
                                Name:      Robert O. Isaac
                                Title:<PAGE>




                              DUAL HOLDING COMPANY


                              By       /S/ ROBERT O. ISAAC           
                                ---------------------------------
                                Name:      Robert O. Isaac
                                     Title:     Asst. Secretary



                              CHRISTIANIA BANK OG KREDITKASSE, NEW YORK
                                BRANCH,
                                Individually and as Administrative Agent


                              By       /S/ MARTIN LUNDER       
                                ---------------------------------
                                Name:      Martin Lunder
                                Title:     First Vice President


                              By       /S/ HANS CHR. KJELSRUD        
                                ---------------------------------
                                Name:      Hans Chr. Kjelsrud
                                Title:     Vice President



                              DEN NORSKE BANK ASA, NEW YORK BRANCH,
                                Individually and as Co-Agent


                              By       /S/ BARBARA GRONQUIST         
                                ---------------------------------
                                Name:      Barbara Gronquist
                                Title:     Vice President


                              By       /S/ DICK H. FAGERSTAL         
                                ---------------------------------
                                Name:      Dick H. Fagerstal
                                Title:     First Vice President<PAGE>



                              BANQUE INDOSUEZ


                              By                                
                                ---------------------------------
                                Name:                         
                                Title:


                              MEESPIERSON N.V.


                              By      
                                ---------------------------------
                                Name:           
                                Title:<PAGE>



                                                                 ANNEX I
                                                                 -------


                              COMMITMENTS
                              -----------


                        Tranche A          Tranche B        Tranche C
 Bank                   Commitment         Commitment       Commitment
 ----                  ------------       ------------     -----------
                                          
 Christiania Bank      $ 36,250,000        $18,125,000     $18,125,000

 Den norske Bank         36,250,000         18,125,000      18,125,000

 Banque Indosuez         15,000,000          7,500,000       7,500,000

 MeesPierson              2,500,000          6,250,000       6,250,000

      Total            $100,000,000        $50,000,000     $50,000,000
                       ============        ===========     ===========
             <PAGE>


                                                               ANNEX II
                                                               --------


                       BANK ADDRESSES
                       --------------


Christiania Bank og Kreditkasse,   11 West 42nd Street
New York Branch                    7th Floor
                                   New York, NY  10036
                                   Attn:  Hans Chr. Kjelsrud
                                   Tel. No.:  (212) 827-4800
                                   Fax No.:          (212) 827-4888


Den norske Bank,                   200 Park Avenue
New York Branch                    New York, NY 10166
                                   Attn:  Barbara Gronquist
                                   Tel. No.:  (212) 681-3859
                                   Fax No.:  (212) 681-3900


Banque Indosuez                    Representative Office Norway
                                   Ruselokkveien 6
                                   0120 Oslo, Norway
                                   Attn: Mr. Bjorn Hundevadt-Gulbrandsen
                                         Mr. Hans Jorgen Wibstad
                                   Tel. No.: 011 47 22 83 30 50
                                   Fax No.:  011 47 22 83 30 55


MeesPierson                        Camomile Court
                                   23 Camomile Street
                                   London EC3A 7PP
                                   Attn:  Harris Antoniou
                                   Tel. No.: 44 171 444 8789
                                   Fax No.:  44 171 444 8810<PAGE>




                                                              ANNEX III
                                                              ---------




                       EXISTING LETTERS OF CREDIT
                       --------------------------


                                  None<PAGE>


                                                                  ANNEX IV
                                                                  --------


                      ENSCO  -  FLEET VALUATION LIST
                      ------------------------------

                                % of                          
          RIG NAME           TOTAL FMV                FMV     
          --------           ---------          --------------

          ENSCO 68             3.95%            $29,000,000.00
          ENSCO 98             3.54%            $26,000,000.00
          ENSCO 83             3.68%            $27,000,000.00
          ENSCO 84             3.68%            $27,000,000.00
          ENSCO 86             3.95%            $29,000,000.00
          ENSCO 88             3.81%            $28,000,000.00
          ENSCO 89             3.95%            $29,000,000.00
          ENSCO 90             3.81%            $28,000,000.00
          ENSCO 93             4.02%            $29,500,000.00
          ENSCO 99             4.02%            $29,500,000.00
          ENSCO 94             3.81%            $28,000,000.00
          ENSCO 95             3.81%            $28,000,000.00

          ENSCO 51             4.77%            $35,000,000.00
          ENSCO 54             4.77%            $35,000,000.00
          ENSCO 81             5.45%            $40,000,000.00
          ENSCO 82             5.38%            $39,000,000.00
          ENSCO 87             5.59%            $41,000,000.00
          ENSCO 80             6.27%            $46,000,000.00
          ENSCO 85             6.13%            $45,000,000.00
          ENSCO 92             6.06%            $44,500,000.00
          ENSCO 50             4.77%            $35,000,000.00
          ENSCO 53             4.77%            $35,000,000.00


          TOTAL              100.00%           $734,000,000.00<PAGE>


                                                                  ANNEX V
                                                                  -------

              SUBSIDIARIES OF ENSCO INTERNATIONAL INCORPORATED
              ------------------------------------------------

     The  following   list  sets  forth  the  name   and  jurisdiction  of
incorporation  of  each  "Subsidiary" (as  that  term  is  defined in  the
Agreement)   of  ENSCO  International  Incorporated  (other  than  certain
subsidiaries that, considered  in the  aggregate as  a single  subsidiary,
would  not constitute  a  significant subsidiary)  and  the percentage  of
voting securities owned by each Subsidiary's immediate parent.  

                                                               Percentage
                                                   Percentage  of Voting 
                                                   of Voting   Securities
                                                   Securities  Owned by 
                                                   Owned by    Immediate 
                                                   Registrant  Parent  
                                                   ----------  ----------

 ENSCO Drilling Company (Delaware)  . . . . . . . .     100%  
    ENSCO Drilling (Caribbean), Inc. (Cayman Islands)                85% 
      ENSCO Drilling Venezuela, Inc. (Cayman Islands)               100% 
*ENSCO Engineering Company (Delaware) . . . . . . .     100%  
   *ENSCO Holding Corporation (Delaware)  . . . . .                 100% 
      ENSCO Delaware, Inc. (Delaware) . . . . . . .                 100% 
       *ENSCO Offshore Company (Delaware) . . . . .                 100% 
         *ENSCO Offshore U.K. Limited (U.K.)  . . .                 100% 
 ENSCO Incorporated (Texas) . . . . . . . . . . . .     100%  
 ENSCO Limited (Cayman Islands) . . . . . . . . . .     100%  
 ENSCO Marine Company (Delaware)  . . . . . . . . .     100%  
 ENSCO Oceanics Company (Delaware)  . . . . . . . .     100%  
    ENSCO Netherlands Ltd. (Cayman Islands) . . . .                 100% 
    Petroleum Finance Corporation (Cayman Islands)                  100% 
    ENSCO Brazil Servicos de Petroleo Limitada (Brazil)              99% 
    ENSCO Drilling Company (Nigeria), Ltd. (Nigeria)                 99% 
 ENSCO Acquisition Company (Delaware) . . . . . . .     100%  
*Dual Holding Company . . . . . . . . . . . . . . .     100%  
   *ENSCO Offshore Company II . . . . . . . . . . .                 100% 
     *ENSCO Qatar Company . . . . . . . . . . . . .                 100% 
   *ENSCO Oceanics Company II . . . . . . . . . . .                 100% 
     *ENSCO Maritime Limited  . . . . . . . . . . .                 100% 
       *Dual Drilling Arabia, Ltd.  . . . . . . . .                  50% 
     *ENSCO Asia Company II . . . . . . . . . . . .                 100% 
       *P. T. Dual Perkasa Offshore . . . . . . . .                  80% 
       *Sociedada Brasiliero de Perfuacoes  . . . .                  99% 
   *ENSCO Platform Company  . . . . . . . . . . . .                 100% 
     *Dual Drilling Nigeria Ltd.  . . . . . . . . .                 100% 
     *Dual Drilling de Venezuela  . . . . . . . . .                 100% 
   *ENSCO Platform AS . . . . . . . . . . . . . . .                 100% 
   *ENSCO Malaysia Company  . . . . . . . . . . . .                 100% 
     *Sime ENSCO Sdn. Bhd.  . . . . . . . . . . . .                  49% 
     *Sime Dual Drilling Ltd. . . . . . . . . . . .                 100% 

*  Denotes  a "Restricted  Subsidiary", as that  term is  defined in the
   Agreement.<PAGE>


                                                                 ANNEX VI
                                                                 --------

                                  RIGS
                                  ----

                                                            OFFICIAL
  NAME                OWNER             FLAG    HOME PORT      NO.    CLASS
- --------  ---------------------------  -------  -----------  -------  -----

ENSCO 68  ENSCO Offshore Company         U.S.   New Orleans   574668    *
ENSCO 81  ENSCO Offshore Company         U.S.   New Orleans   606512    *
ENSCO 82  ENSCO Offshore Company         U.S.   New Orleans   606912    *
ENSCO 83  ENSCO Offshore Company         U.S.   New Orleans   605536    *
ENSCO 84  ENSCO Offshore Company         U.S.   New Orleans   637544    *
ENSCO 86  ENSCO Offshore Company         U.S.   New Orleans   643110    *
ENSCO 87  ENSCO Offshore Company         U.S.   New Orleans   648969    *
ENSCO 88  ENSCO Offshore Company         U.S.   New Orleans   645637    *
ENSCO 89  ENSCO Offshore Company         U.S.   New Orleans   652440    *
ENSCO 90  ENSCO Offshore Company         U.S.   New Orleans   647859    *
ENSCO 93  ENSCO Offshore Company         U.S.   New Orleans   651385    *
ENSCO 94  ENSCO Offshore Company         U.S.   New Orleans   638685    *
ENSCO 95  ENSCO Offshore Company         U.S.   New Orleans   642112    *
ENSCO 98  ENSCO Offshore Company         U.S.   New Orleans   589096    *
ENSCO 99  ENSCO Offshore Company         U.S.   New Orleans   682070    *

ENSCO 80  ENSCO Offshore U.K. Limited  Bahamas     Nassau     724944    *
ENSCO 85  ENSCO Offshore U.K. Limited  Bahamas     Nassau     724945    *
ENSCO 92  ENSCO Offshore U.K. Limited  Bahamas     Nassau     724946    *


ENSCO 50  ENSCO Offshore Company II    Liberia    Monrovia      9383    *
ENSCO 51  ENSCO Offshore Company II    Liberia    Monrovia      9384    *
ENSCO 53  ENSCO Offshore Company II    Liberia    Monrovia     10260    *
ENSCO 54  ENSCO Offshore Company II    Liberia    Monrovia     10159    *


   *   All  rigs are  classed  by the  American Bureau  of  Shipping
       (ABS) as Maltese Cross A-1 Self-Elevating Drilling Units.<PAGE>


                                                                 ANNEX VII
                                                                 ---------

                               SHIPBROKERS
                               -----------

                       Normarine Offshore Consultants, Inc.
                       24 Greenway Plaza, Suite 1305
                       Houston, Texas  77046
                       (713) 871-8988



                       R.S. Platou (USA) Inc.
                       3535 Briarpark Drive, Suite 201
                       Houston, Texas  77042
                       (713) 974-5505



                       Johan G. Olsen Shipbrokers A/S
                       Dronningensgt. 3
                       P.O. Box 234
                       N-4601 Kristiansand S., Norway
                       (47) 38-07-08-11



                       Fearnley Offshore A/S
                       P.O. Box 1158 Sentrum
                       N-0107 Oslo, Norway
                       (47) 22-93-60-00



                       Bassoe Offshore
                       2000 West Loop South, Suite 2110
                       Houston, Texas  77027
                       (713) 850-9002<PAGE>




                   *************************************
 
                           E  X  H  I  B  I  T  S
 

                                     TO


                   AMENDED AND RESTATED CREDIT AGREEMENT


                    ____________________________________

                       Dated as of December 15, 1993
             and Amended and Restated as of September 27, 1995
         and further Amended and Restated as of February 27, 1997
                    ____________________________________




                   *************************************<PAGE>



                                                                EXHIBIT A
                                                                ---------

                        FORM OF NOTICE OF BORROWING
                        ---------------------------

                                                                   [Date]



Christiania Bank og Kreditkasse, 
  New York Branch, as Administrative Agent
  for the Banks party to the Credit 
  Agreement referred to below
11 West 42nd Street
New York, New York  10036

Attention:  Loan Administration

Ladies and Gentlemen:

          The  undersigned, [ENSCO  Offshore Company]<F1>  [ENSCO Offshore
U.K. Limited]<F2>  [Dual Holding Company]<F3> (the  "Borrower"), refers to
the  Credit Agreement, dated as of February 27, 1997 (as amended, modified
or supplemented from time to time, the "Credit Agreement", the capitalized
terms defined therein being  used herein as therein defined),  among ENSCO
International Incorporated, ENSCO Delaware, Inc., ENSCO Offshore  Company,
ENSCO  Offshore U.K.  Limited,  Dual Holding  Company, the  lending insti-
tutions from time to time party thereto (the "Banks"), Christiania Bank og
Kreditkasse, New York Branch and Den norske Bank ASA, New  York Branch, as
co-agents,  and you, as administrative agent and security trustee for such
Banks, and, pursuant to Section 1.03 of the Credit Agreement, hereby gives
you irrevocable notice  that the undersigned  hereby requests a  Borrowing
under the Credit  Agreement, and in  that connection sets forth  below the
information  relating  to such  Borrowing  (the  "Proposed Borrowing")  as
required by Section 1.03 of the Credit Agreement:

          (i)  The aggregate principal amount of the Proposed Borrowing is
     [$____________].[Pound Sterling __________]<F4>

         (ii)  The Business Day of the Proposed Borrowing is [Date].<F5>

        (iii)  The Proposed  Borrowing shall consist of [Tranche  A Loans]
     [Tranche B Loans] [Tranche C Loans].

         (iv)   The Loans to  be made pursuant  to the Proposed  Borrowing
     shall be  initially  maintained  as  [Base  Rate  Loans]  [Eurodollar
     Loans].<F6)

        [ (v)  The  initial Interest Period  for the   Proposed  Borrowing
     is ____ month(s).]<F7>

          The  undersigned hereby certifies  that the following statements
are true on the date hereof, and will be  true on the date of the Proposed
Borrowing:<PAGE>


          (A)  the representations  and warranties contained in  Section 6
     of the  Credit Agreement and the other  Credit Documents are and will
     be true and correct  in all material respects, both  before and after
     giving effect to the Proposed Borrowing and to the application of the
     proceeds  thereof,  as though  made on  such  date, unless  stated to
     relate to a specific earlier date, in which case such representations
     and warranties shall be true and correct in all  material respects as
     of such earlier date; and

          (B)   no  Default  or  Event  of Default  has  occurred  and  is
     continuing,  or would result from such Proposed Borrowing or from the
     application of the proceeds thereof.

                              Very truly yours,

                              [ENSCO OFFSHORE COMPANY]<F8> [ENSCO
                              OFFSHORE U.K. LIMITED]<F9> [DUAL HOLDING
                              COMPANY]<F10> 
                         

                              By:__________________________________
                              Name:
                              Title:

_______________

<F1>   Include  bracketed  language  if  Loan  made  under the  Tranche  A
       Facility.
<F2>   Include  bracketed language  if  Loan  made  under  the  Tranche  B
       Facility.
<F3>   Include  bracketed  language  if  Loan  made under  the  Tranche  C
       Facility.
<F4>   Pound Sterling Loans may only be borrowed pursuant to the Tranche B
       Facility.
<F5>   Shall  be a Business Day at least four Business Days after the date
       hereof.
<F6>   Pound Sterling Loans may only be borrowed as Eurodollar loans.
<F7>   To be included for a Proposed Borrowing of Eurodollar Loans.
<F8>   Include  bracketed  language  if Loan  made  under  the  Tranche  A
       Facility.
<F9>   Include  bracketed  language  if  Loan  made  under  the Tranche  B
       Facility.
<F10>  Include  bracketed  language if  Loan  made  under  the  Tranche  C
       Facility.
<PAGE>




                                                             EXHIBIT B-1
                                                             -----------


                         FORM OF TRANCHE A NOTE
                         ----------------------


$_______________.                                     New York, New York
                                                      February __, 1997


          FOR  VALUE   RECEIVED,  ENSCO   OFFSHORE  COMPANY,   a  Delaware
corporation  (the  "Borrower"), hereby  promises to  pay  to the  order of
_______________________ (the "Bank"), in lawful money of the United States
of  America in immediately available  funds, at the  office of Christiania
Bank og Kreditkasse, New York Branch  (the "Administrative Agent") located
at 11 West 42nd Street, New York, New York 10036, on the Maturity Date (as
defined  in  the  Agreement  referred  to  below)  the  principal  sum  of
_________________ DOLLARS  ($_________)  or,  if  less,  the  then  unpaid
principal amount  of  all Tranche  A Loans  (as defined  in the  Agreement
referred to below) made by the Bank pursuant to the Agreement.

          The  Borrower promises  also  to  pay  interest  on  the  unpaid
principal amount  hereof in like money at said office from the date hereof
until paid at the rates and at  the times provided in Section 1.08 of  the
Agreement.

          This  Note is  one of  the Tranche  A Notes  referred to  in the
Credit  Agreement, dated as of February 27, 1997 among ENSCO International
Incorporated, ENSCO Delaware, Inc., ENSCO Offshore Company, ENSCO Offshore
U.K.  Limited, Dual Holding Company, the lending institutions from time to
time party  thereto (including the Bank), Christiania Bank og Kreditkasse,
New York Branch and Den norske Bank ASA, New York Branch, as co-agents and
Christiania Bank og Kreditkasse, New York  Branch, as administrative agent
and  security trustee (as amended,  modified or supplemented  from time to
time, the "Agreement"), and is entitled to the benefits thereof and of the
other  Credit Documents  (as  defined in  the  Agreement).   This Note  is
secured  by the Security  Documents (as defined  in the Agreement)  and is
entitled  to  certain  benefits under  the  Guaranty  (as  defined in  the
Agreement).    As  provided in  the  Agreement,  this Note  is  subject to
voluntary prepayment  and mandatory prepayment prior to the Maturity Date,
in whole or in part.

          In  case an Event of Default (as defined in the Agreement) shall
occur and  be continuing,  the principal of  and accrued interest  on this
Note  may be  declared to be  due and payable  in the manner  and with the
effect provided in the Agreement.<PAGE>


          The  Borrower  hereby  waives presentment,  demand,  protest  or
notice of any kind in connection with this Note.


          THIS  NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH AND BE GOVERNED
BY THE LAW OF THE STATE OF NEW YORK.


                              ENSCO OFFSHORE COMPANY


                              By____________________________
                              Name:
                              Title:<PAGE>


                                                             EXHIBIT B-2
                                                             -----------


                          FORM OF TRANCHE B NOTE
                          ----------------------

$__________.                                          New York, New York
                                                      February __, 1997


          FOR  VALUE  RECEIVED, ENSCO  OFFSHORE  U.K.  LIMITED, a  company
formed  under the  laws  of England  and  Wales (the  "Borrower"),  hereby
promises to pay to  the order of _______________________ (the  "Bank"), in
lawful money of  the [United States of  America and/or United  Kingdom] in
immediately available funds,  at the UK Payment Office (as  defined in the
Agreement referred to  below), on  the Maturity  Date (as  defined in  the
Agreement referred  to  below)  the  principal  sum  of  _________________
DOLLARS ($_________) or, in the event (i) any Borrowing (as defined in the
Agreement referred  to below) of Pound  Sterling Loans (as  defined in the
Agreement referred to below) has been made and remains outstanding, and/or
(ii) the aggregate unpaid principal amount  of Tranche B Loans (as defined
in the Agreement referred to  below) made by the  Bank and borrowed as  US
Dollar Loans  (as defined in the Agreement referred to below) is less than
$__________, the then unpaid  principal amount of, if clause  (i) above is
applicable, all  (x) US Dollar Loans  borrowed as Tranche B  Loans and (y)
Pound Sterling  Loans, and, if only  clause (ii) above is  applicable, the
unpaid principal amount  of US Dollar Loans  borrowed as Tranche B  Loans,
made by the Bank pursuant to the Agreement.

          The  Borrower  promises also  to  pay  interest  on  the  unpaid
principal amount hereof in like money  at said office from the date hereof
until paid at the rates and  at the times provided in Section 1.08  of the
Agreement.

          This  Note is  one of  the Tranche  B Notes  referred to  in the
Credit  Agreement, dated as of February 27, 1997 among ENSCO International
Incorporated, ENSCO Delaware, Inc., ENSCO Offshore Company, ENSCO Offshore
U.K.  Limited, Dual Holding Company, the lending institutions from time to
time party thereto  (including the Bank), Christiania Bank og Kreditkasse,
New York Branch and Den norske Bank ASA, New York Branch, as co-agents and
Christiania Bank og Kreditkasse, New York Branch,  as administrative agent
and  security trustee (as amended,  modified or supplemented  from time to
time, the "Agreement"), and is entitled to the benefits thereof and of the
other Credit  Documents  (as defined  in  the Agreement).   This  Note  is
secured by the  Security Documents (as  defined in the  Agreement) and  is
entitled  to  certain  benefits under  the  Guaranty  (as  defined in  the
Agreement).    As provided  in  the  Agreement, this  Note  is subject  to
voluntary prepayment and  mandatory prepayment prior to the Maturity Date,
in whole or in part.

          In case an Event of Default (as defined in the Agreement)  shall
occur  and be  continuing, the principal  of and accrued  interest on this
Note  may be declared  to be due  and payable  in the manner  and with the
effect provided in the Agreement.<PAGE>


          The  Borrower  hereby  waives presentment,  demand,  protest  or
notice of any kind in connection with this Note.


          THIS  NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH AND BE GOVERNED
BY THE LAW OF THE STATE OF NEW YORK.


                              ENSCO OFFSHORE U.K. LIMITED


                              By____________________________
                              Name:
                              Title:<PAGE>


                                                                           
                                                             EXHIBIT B-3
                                                             -----------



                           FORM OF TRANCHE C NOTE
                           ----------------------


$________________.                                    New York, New York
                                                      February __, 1997


          FOR VALUE RECEIVED, DUAL HOLDING COMPANY, a Delaware corporation
(the   "Borrower"),   hereby   promises   to   pay   to   the   order   of
_______________________ (the "Bank"), in lawful money of the United States
of  America in immediately available  funds, at the  office of Christiania
Bank og Kreditkasse, New York Branch  (the "Administrative Agent") located
at 11 West 42nd Street, New York, New York 10036, on the Maturity Date (as
defined  in  the  Agreement  referred  to  below)  the  principal  sum  of
_________________ DOLLARS  ($_________)  or,  if  less,  the  then  unpaid
principal amount  of  all Tranche  C Loans  (as defined  in the  Agreement
referred to below) made by the Bank pursuant to the Agreement.

          The  Borrower promises  also  to  pay  interest  on  the  unpaid
principal amount  hereof in like money at said office from the date hereof
until paid at the rates and at  the times provided in Section 1.08 of  the
Agreement.

          This  Note is  one of  the Tranche  C Notes  referred to  in the
Credit  Agreement, dated as of February 27, 1997 among ENSCO International
Incorporated, ENSCO Delaware Inc., ENSCO Offshore Company, ENSCO  Offshore
U.K.  Limited, Dual Holding Company, the lending institutions from time to
time party  thereto (including the Bank), Christiania Bank og Kreditkasse,
New York Branch and Den norske Bank ASA, New York Branch, as co-agents and
Christiania Bank og Kreditkasse, New York  Branch, as administrative agent
and  security trustee (as amended,  modified or supplemented  from time to
time, the "Agreement"), and is entitled to the benefits thereof and of the
other  Credit Documents  (as  defined in  the  Agreement).   This Note  is
secured  by the Security  Documents (as defined  in the Agreement)  and is
entitled  to  certain  benefits under  the  Guaranty  (as  defined in  the
Agreement) and the Subsidiary  Guaranty (as defined in the Agreement).  As
provided  in the Agreement, this  Note is subject  to voluntary prepayment
and mandatory prepayment prior to the Maturity Date, in whole or in part.

          In  case an Event of Default (as defined in the Agreement) shall
occur and  be continuing,  the principal of  and accrued interest  on this
Note  may be  declared to be  due and payable  in the manner  and with the
effect provided in the Agreement.

          The  Borrower  hereby  waives  presentment, demand,  protest  or
notice of any kind in connection with this Note.<PAGE>



          THIS  NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH AND BE GOVERNED
BY THE LAW OF THE STATE OF NEW YORK.


                              DUAL HOLDING COMPANY


                              By____________________________
                              Name:
                              Title:<PAGE>


                                                               EXHIBIT C
                                                               ---------

                    FORM OF LETTER OF CREDIT REQUEST
                    --------------------------------


No.___<F1>                                          Dated __________<F2>


Christiania Bank og Kreditkasse, 
  New York Branch, as Administrative Agent 
  and Letter of Credit Issuer, under 
  the Credit Agreement referred 
  to below
11 West 42nd Street
New York, New York  10036

Attention: Loan Administration

Ladies and Gentlemen:

          The  undersigned,  [ENSCO  Offshore  Company]<F3>  [Dual Holding
Company]<F4> (the "Borrower"), refers to the Credit Agreement, dated as of
February 27, 1997 (as amended, modified or supplemented from time to time,
the "Credit Agreement",  the capitalized terms defined  therein being used
herein as therein defined), among ENSCO International Incorporated,  ENSCO
Delaware, Inc., ENSCO Offshore Company, ENSCO Offshore U.K.  Limited, Dual
Holding  Company, the lending institutions from time to time party thereto
(the  "Banks"), Christiania Bank og  Kreditkasse, New York  Branch and Den
norske Bank ASA,  New York  Branch, as co-agents  and Christiania Bank  og
Kreditkasse, New York Branch, as administrative agent and security trustee
for such Banks.

          The undersigned  hereby  requests  that  the  Letter  of  Credit
Issuer, issue on behalf and for  the account of ____________<F5> a  Letter
of  Credit  on _____________  (the "Date  of  Issuance") in  the aggregate
amount  of  ____________<F6>.   The requested  Letter  of Credit  shall be
denominated in U.S. Dollars.

          The  beneficiary  of  the  requested Letter  of  Credit  will be
________,<F7> and such Letter  of Credit will be in support of _______<F8>
and will have a stated termination date of _________<F9>.

          The undersigned hereby certifies  that the following  statements
are true on the date hereof, and will be true on the Date of Issuance:

          (A)   the representations and  warranties contained in Section 6
     of the Credit Agreement  and the other Credit Documents are  and will
     be true and correct in all material respects, before and after giving
     effect to the  issuance of the Letter of  Credit requested hereby, as
     though made  on the Date  of Issuance, unless  stated to relate  to a
     specific  earlier  date,  in  which  case  such  representations  and
     warranties shall be  true and correct in all material  respects as of
     such earlier date; and<PAGE>


          (B)    no  Default  or Event  of  Default  has  occurred  and is
     continuing,  or would result after  giving effect to  the issuance of
     the Letter of Credit requested hereby.

          Copies  of  all  documentation,  if any,  with  respect  to  the
supported transaction are attached hereto.


                              [ENSCO OFFSHORE COMPANY]<F10>
                              [DUAL HOLDING COMPANY]<F11>


                              By___________________________
                              Name:
                              Title:




___________________

<F1>  Letter of Credit Request Number.
<F2>  At least  seven (7)  Business  Days prior  to the  proposed Date  of
      Issuance (or three (3) Business Days  if the issuance of  the Letter
      of Credit  has been  approved in  advance by  the  Letter of  Credit
      Issuer).   This  Letter of  Credit  Request  shall after  three  (3)
      Business  Days  (or one  (1) Business  Day  if the  issuance of  the
      Letter  of Credit  has  been approved  in advance  by the  Letter of
      Credit Issuer) be irrevocable.
<F3>  Include  bracketed language  if letter  of  credit  is to  be issued
      under the Tranche A Facility.
<F4>  Include  bracketed language  if letter  of  credit  is to  be issued
      under the Tranche C Facility.
<F5>  In  the  case  of  a  Tranche  A Letter  of  Credit,  ENSCO Offshore
      Company; In the case of a Tranche C  Letter of Credit, Dual  Holding
      Company.
<F6>  Aggregate initial Stated Amount of Letter of Credit.
<F7>  Insert name and address of beneficiary.
<F8>  Insert description of the L/C Supportable  Obligations to which this
      Letter of Credit Request relates.
<F9>  Insert last date  upon which drafts may  be presented which  may not
      be  later than the  earlier of  (i) the date which  occurs 30 months
      after the  date  of issuance  thereof,  and  (ii) the  Business  Day
      immediately preceding  the Maturity  Date (note,  however, that  the
      Borrower may  request, and the Required  Banks may  consent in their
      sole absolute  discretion  to  extend the  expiry dates  of  certain
      Letters of Credit beyond the Maturity Date).
<F10> Include  bracketed language  if letter  of  credit  is to  be issued
      under the Tranche A Facility.
<F11> Include  bracketed language  if letter  of  credit  is to  be issued
      under the Tranche C Facility.
<PAGE>



                                                               EXHIBIT D
                                                               ---------


                  FORM OF SECTION 4.04(b)(ii) CERTIFICATE
                  ---------------------------------------

          Reference  is hereby made to  the Credit Agreement,  dated as of
February 27, 1997, among ENSCO International Incorporated, ENSCO Delaware,
Inc.,  ENSCO Offshore Company,  ENSCO Offshore U.K.  Limited, Dual Holding
Company, the lending  institutions from  time to time  party thereto  (the
"Banks"),  Christiania Bank og Kreditkasse, New York Branch and Den norske
Bank   ASA,  New  York  Branch,  as  co-agents  and  Christiania  Bank  og
Kreditkasse, New York Branch, as administrative agent and security trustee
for such Banks  (as amended, modified or  supplemented from time to  time,
the   "Credit   Agreement").       Pursuant   to    the   provisions    of
Section 4.04(b)(ii)  of  the  Credit  Agreement,  the  undersigned  hereby
certifies  that it  is  not a  "bank"  as  such term  is  used in  Section
881(c)(3)(A) of the Internal Revenue Code of 1986, as amended.


                                   [NAME OF BANK]



                                   By ____________________________
                                      Title:

Date:  _______________<PAGE>


                                                              EXHIBIT E-1
                                                              -----------

                 FORM OF OPINION OF ROBERT O. ISAAC, ESQ.
                 -----------------------------------------


February 27, 1997

To Each of the Banks Party to the Credit Agreement
hereinafter Referred to and Christiania Bank og
Kreditkasse, New York Branch, as Administrative
Agent and Collateral Agent

c/o Christiania Bank og Kreditkasse,
New York Branch
11 West 42nd Street, 7th Floor
New York, New York 10036

Gentlemen:

I  have acted as counsel  to ENSCO International  Incorporated, a Delaware
corporation ("Holdings"),  ENSCO Delaware,  Inc.,  a Delaware  corporation
(the "Parent"), ENSCO Offshore Company, a Delaware corporation  ("ENSCO"),
ENSCO  Offshore U.K. Limited, a  company formed under  the laws of England
and Wales ("ENSCO UK"),  and Dual Holding Company, a  Delaware corporation
("Dual")  (collectively, the  "Companies") in  connection with  the Credit
Agreement dated as  of February  27, 1997 (the  "Credit Agreement")  among
Holdings,  the Parent,  ENSCO, ENSCO  UK, Dual,  the Banks  party thereto,
Christiania Bank og Kreditkasse, New York Branch, and Den norske Bank ASA,
New  York Branch, as co-agents,  and Christiania Bank  og Kreditkasse, New
York Branch, as administrative agent and security trustee (in its relative
capacities,  the  "Administrative  Agent"  and  the  "Collateral  Agent").
Additionally,  I have also  acted as counsel to  ENSCO Offshore Company II
("ENSCO II") in its capacity as "Subsidiary Guarantor" of the "Borrower C"
obligations  as stated under the  Credit Agreement and  as Mortgagor under
the Liberian Fleet Mortgage.

This opinion  is being furnished to you pursuant to Section 5.04(i) of the
Credit Agreement. Capitalized  terms not otherwise defined herein have the
meanings ascribed to them in the Credit Agreement.

In this connection and  as a basis for the opinions hereinafter expressed,
I  have made the investigations described below and have not independently
verified information obtained  from third parties except  as otherwise set
forth  herein.   As to matters  of fact  and in  making the investigations
referred  to in my opinions  expressed herein, I  have examined and relied
upon  originals  or  copies,  certified  or  otherwise  identified  to  my
satisfaction, of the following documents:

     a.   the Credit Agreement;

     b.   the Notes;

     c.   the Mortgages;

     d.   the Security Agreements;<PAGE>


     e.   the UCC-1 financing statements in respect of the 
          Security Agreement (the"Financing Statements"); and

     f.   the Pledge Agreement;

     g.   the Subsidiary Guaranty;

     h.   the Floating Charge

(collectively referred to as the "Documents").

As counsel to the Companies and ENSCO  II, I am familiar with the relevant
corporate  proceedings and have examined such documents and records of the
Companies and ENSCO II and have  obtained such other information as I have
deemed necessary to form a basis for the opinions expressed below.

In rendering the opinions set  forth below, I have relied, to the extent I
deemed appropriate, upon certificates  or other written or oral  advice of
an officer or other authorized representative of a particular governmental
authority, corporation, or other person or entity concerned.  

Furthermore, the  opinions rendered  herein are  subject to the  following
additional qualifications, limitations and assumptions:

      (i) the effect of applicable bankruptcy, insolvency, reorganization,
          moratorium, fraudulent  transfer  or conveyance  or  other  laws
          affecting  creditors'   rights   generally,  and   the   general
          principles of equity (regardless of whether such  enforceability
          is considered  in a proceeding  in equity or at  law) and future
          court decisions affecting or interpreting any of the foregoing;

     (ii) all  documents submitted  to me  as originals  are accurate  and
          complete;

    (iii) all  documents submitted to me  as copies are  true, correct and
          complete copies of the originals thereof;

     (iv) the  due  organization  and  existence  of  all  parties to  the
          Documents (other than the Companies and ENSCO II);

      (v) the legal right  and the  corporate power and  authority of  all
          parties to the Documents (other than the Companies and ENSCO II)
          to  execute  and deliver,  and  to  consummate the  transactions
          contemplated by, the Documents to which they are parties;

     (vi) the due  authorization, execution and delivery  of the Documents
          by  all parties to the  Documents (other than  the Companies and
          ENSCO II);

    (vii) that the  Documents constitute  the  legal, valid,  binding  and
          enforceable  obligations of  all of  the parties  thereto (other
          than the Companies and ENSCO II); 

   (viii) all of the signatures, other than the signatures of the officers
          of the Companies and ENSCO II,  on all documents submitted to me
          are genuine;<PAGE>


     (ix) (a) you  will  comply with  usury laws  which may  apply to  the
          provisions of the  Credit Agreement or  other Credit  Documents,
          (b) in  connection  therewith you  will  take into  account  any
          consideration, in whatsoever form, which could constitute or  be
          deemed to constitute interest  under Texas law and (c)  there is
          no other consideration  paid or to be  paid by the Borrowers  in
          connection with the Credit Agreement;

      (x) the  opinions rendered  herein are  specifically limited  to the
          current applicable United States federal law (including maritime
          laws), the Delaware General Corporation Law and the  substantive
          laws of  the  State of  Texas  as they  relate to  the  opinions
          expressed  herein.  I am a member of  the State Bar of Texas and
          have neither been admitted to nor purport to be an expert on the
          laws of any other state or jurisdiction, although I am generally
          familiar  with the  General  Corporation  Law  of the  State  of
          Delaware;

     (xi) no  opinion is expressed as  to the enforceability  of choice of
          law,  choice   of  jurisdiction  and  forum   selection  clauses
          contained in the Documents;

    (xii) the  enforceability of the Documents  (1) may be  limited by the
          application of the standard "good  faith", such as that  defined
          in  Section 1.203 of the  Texas Uniform Commercial  Code, as the
          same may be amended from time to time, and (2) is subject to the
          discretion of  the courts  of the  State of  Texas in   granting
          equitable remedies  such as specific  performance or  injunctive
          relief  and their power to  stay proceedings before  them and to
          stay  the execution of judgments.  The enforceability of some of
          the  remedial provisions of the Documents may be limited by, and
          some provisions  of the Documents may  be rendered unenforceable
          under,  applicable federal and  state laws,  rules, regulations,
          court decisions,  and constitutional requirements in  and of the
          State  of  Texas or  the United  States,  but such  laws, rules,
          regulations,  court  decisions  and constitutional  requirements
          should not,  in my  opinion,  substantially interfere  with  the
          practical realization of the rights and benefits afforded by the
          Documents,   although  such  laws,   rules,  regulations,  court
          decisions and constitutional requirements may delay  the ability
          of  the Agents, the Administrative Agent or the Banks to enforce
          their respective rights and remedies provided thereunder;

   (xiii) to the extent that ENSCO or ENSCO II receive payment of accounts
          constituting  a portion of the property of ENSCO and/or ENSCO II
          which are subject to  the provisions of the  Security Agreements
          and such receipt occurs in a state other than the State of Texas
          or Louisiana, perfection of a security interest in such accounts
          and proceeds thereof  may be governed by the laws  of such other
          state;

    (xiv) insofar  as  the laws  (including, without  limitation, maritime
          regulations) of England, the Commonwealth of the Bahamas  and/or
          the  Republic  of Liberia  are concerned  or  may relate  to the
          undertakings of  ENSCO UK and/or  ENSCO II  as set forth  in the
          Documents, I have expressed no opinion.<PAGE>


The opinions expressed below are made as of the date hereof.  I assume no,
and expressly  disclaim  any,  obligation  to update  or  supplement  such
opinions to reflect any facts or circumstances which may hereafter come to
my attention or any changes in laws which may hereafter occur.  

Based upon the foregoing  and having regard to the legal  considerations I
deem relevant, and subject to the assumptions, limitations, qualifications
and exceptions set forth herein, it is my opinion that:

     1.   Each  of  the  Companies and  ENSCO  II  is  a corporation  duly
          organized and  validly existing and  in good standing  under the
          laws of the  state of  its incorporation and  has the  corporate
          power  and authority  (i)  to  own  or  lease  and  operate  its
          properties and carry on  its business as carried on  at the date
          hereof  and (ii) to execute  and deliver, and  to consummate the
          transactions  contemplated by,  the Documents to  which it  is a
          party.

     2.   Each  of such  Companies and  ENSCO II  has taken  all necessary
          corporate action to authorize the execution and delivery of, and
          the consummation of  the transactions contemplated  by, each  of
          the  Documents to  which  it is  a party.    Such execution  and
          delivery, and consummation  of the transactions  contemplated by
          the Documents, will  not (i) result  in a violation of  any such
          Companies' or ENSCO II's certificate of incorporation or bylaws,
          or to my knowledge  any law or governmental regulation  to which
          each such Company and/or ENSCO II  is subject, or (ii) result in
          a violation of  or constitute a breach  of or default under  any
          agreement or order  of which I am aware.   Each of the Documents
          to which any of the  Companies and/or ENSCO II (as the  case may
          be)  is a party has been duly authorized, executed and delivered
          by each of such Companies.

     3.   Each of  the Documents constitutes the legal,  valid and binding
          obligation of,  as the case may be,  each of the Companies party
          thereto and/or  ENSCO II, enforceable against  each such Company
          and/or  ENSCO II,  as the  case may  be, in accordance  with its
          terms.  I  have assumed, with your permission, that  each of the
          Documents stated by  its terms to  be governed  by New York  law
          constitutes a legal, valid and binding obligation under New York
          law,  enforceable  against  each  of  the  parties  thereto   in
          accordance with its respective terms.

     4.   If,  notwithstanding  the  choice  of  New  York  law  contained
          therein,  Texas law were applied  to the Documents,  each of the
          Documents  would  constitute  the   legal,  valid  and   binding
          obligation of each of  the Companies and ENSCO II  to the extent
          parties thereto, enforceable against each such Company or  ENSCO
          II in accordance with its terms.  Notwithstanding the foregoing,
          no opinion is expressed in this paragraph  4 with respect to the
          Floating Charge, any  UCC-1 Financing Statement  filed by  ENSCO
          UK, the Bahamian Mortgage or the Liberian Fleet Mortgage.

     5.   The  execution and  delivery  of, and  the  consummation of  the
          transactions by, each of  the Companies and/or ENSCO II  (as the
          case may  be) of the  Documents to which  it is  a party do  not
          require,  with respect to any of such Companies and/or ENSCO II,<PAGE>


          the consent, approval, waiver, license or authorization or other
          action or filing with any Texas or Delaware corporate or federal
          governmental  authority,  except  for  filings pursuant  to  the
          Uniform Commercial Code  as in effect in the State of Texas (the
          "UCC").

     6.   The Mortgagor of a US Rig is qualified, within the meaning of 46
          U.S.C.  Section 12102,  to  document the  Rig(s)  owned by  such
          Mortgagor under the laws of the United States.

     7.   The US Rigs  are duly documented in the name  of ENSCO under the
          regulations  of the United States Coast Guard, free and clear of
          all  liens and encumbrances (other  than Permitted Liens and the
          U.S. Fleet Mortgage). 

     8.   When  the US Fleet Mortgage has been duly filed for recordation,
          it will  constitute a  first preferred  ship  mortgage under  46
          U.S.C. Section 31325  on the Rig(s) described  therein, in favor
          of  the  Security  Trustee, as  mortgagee  under  such US  Fleet
          Mortgage, entitled to the benefits afforded by 46 U.S.C. Section
          31326,  having the effect and with the priority provided in such
          provision.

     9.   To my knowledge, after due inquiry, there is no action,  suit or
          proceeding pending or  threatened against any  of the  Companies
          and/or ENSCO II  before or  by any court,  arbitration panel  or
          administrative  agency  which,  if  adversely  determined, could
          reasonably  be  expected to  result or  have a  Material Adverse
          Effect  on the  business or  condition of  any of  the Companies
          and/or ENSCO II or prevent any of the Companies and/or ENSCO  II
          from performing any  of their respective  obligations under  the
          Documents.

     10.  None  of the Companies is  an "investment company"  or an entity
          "controlled"  by an  "investment  company" under  the Investment
          Company act of 1940,  as amended, and the rules  and regulations
          promulgated by  the  Securities  and  Exchange  Commission  (the
          "Commission") thereunder (the "Investment Company Act").

     11.  The UCC-1 Financing Statements to be filed in the state of Texas
          are in the proper form for  filing pursuant to the UCC, and upon
          filing  with  the  Secretary of  State  of  the  State of  Texas
          pursuant  to the  UCC, will constitute  a valid  and enforceable
          lien of the Collateral Agent in all right, title and interest of
          the  applicable  debtor  in  the  collateral  described  in  the
          Financing  Statements;  provided,  however, notwithstanding  the
          foregoing  opinion, no opinion is given  or expressed in respect
          to any UCC-1 filing by ENSCO UK.

     12.  Assuming the  filing of the  Financing Statements on  Form UCC-1
          with the Secretary of State of the State of Texas, the execution
          and delivery of the UCC-1 Financing Statements creates valid and
          enforceable  liens within the State  of Texas on  and a security
          interests  in the "Collateral" (as  such term is  defined in the
          Security Agreements) to the extent a  valid and enforceable lien
          or  security interest in such Collateral may be perfected by the
          filing  of  a  financing  statement  under  the  UCC;  provided,<PAGE>


          however, notwithstanding  the foregoing  opinion, no  opinion is
          given or expressed in respect to any UCC-1 filing by ENSCO UK.

The scope of the foregoing opinion is limited to those issues specifically
considered  herein, and  no further  or more  expansive opinion  is to  be
implied  from  any of  the  opinions expressed  above.   Any  variation or
difference  in  the assumptions  upon which  this  opinion is  based might
affect my conclusions in an adverse manner and make them inaccurate.

Furthermore, the opinions  expressed herein are  rendered solely for  your
benefit and  may not be relied upon or used  by any other person (it being
understood  that  you  may  be  required  to  show this  opinion  to  bank
regulators and auditors) without my prior written consent.

Very truly yours,

/s/ Robert O. Isaac
- ---------------------------
Robert O. Isaac
Senior Counsel<PAGE>


                                                              EXHIBIT E-2
                                                              -----------


                    FORM OF OPINION OF WHITE & CASE
                    -------------------------------




February 27, 1997



To:  The Administrative Agent, the Co-Agents
     and the various lending institutions
     (collectively, the "Banks") from time to time
     party to the Credit Agreement referred to below


Re:  Credit Agreement, dated as of February 27, 1997
     (the  Credit Agreement ),  among ENSCO International 
     Incorporated, ENSCO Delaware, Inc., ENSCO Offshore 
     Company, ENSCO Offshore U.K. Limited, Dual Holding
     Company, the Banks, Christiania Bank og Kreditkasse,
     New York Branch and Den norske Bank ASA, 
     New York Branch as co-agents and Christiania Bank
     og Kreditkasse, New York Branch,
     as administrative agent and security trustee

Ladies and Gentlemen:

          We  have acted as special counsel to the Administrative Agent in
connection  with the execution and delivery of the Credit Agreement.  This
opinion is  delivered to  you pursuant to  Section 5.04(ii) of  the Credit
Agreement.   Terms used herein which  are defined in the  Credit Agreement
shall  have  the respective  meanings set  forth  in the  Credit Agreement
unless otherwise defined herein.

          In connection with this opinion, we have examined the originals,
or  certified,  conformed   or  reproduction  copies,   of  all   records,
agreements,  instruments  and  documents as  we  have  deemed  relevant or
necessary as the basis for the opinions hereinafter expressed.  In stating
our opinion, we have assumed the genuineness of all signatures on original
or  certified copies,  the authenticity  of documents  submitted to  us as
originals and the conformity to original or certified copies of all copies
submitted to us as certified or reproduction copies.

          We  have also assumed,  for purposes  of the  opinions expressed
herein, that the parties to the Credit Agreement have the corporate  power
and authority to enter into and per-form the Credit Agreement and that the
Credit  Agreement has been duly authorized, executed and delivered by each
such party.<PAGE>


          Based upon the  foregoing, and  subject to  the limitations  set
forth herein, we are of the opinion that the Credit  Agreement constitutes
the valid and binding obligation of Holdings, the Parent and the Borrowers
enforceable  in  accordance  with its  terms  except  to  the extent  that
enforcement   may  be  limited   by  applicable   bankruptcy,  insolvency,
reorganization or other similar laws affecting creditors  rights generally
and by equity principles  (regardless of whether enforcement is  sought in
equity or at law).

          We  have not been requested to render and, with your permission,
we  express no  opinion  as to  the applicability  to  the obligations  of
Holdings,  the Parent  or  the Borrowers  under  the Credit  Agreement  of
Section 548 of the Bankruptcy Code and article 10 of the New York Debtor &
Creditor  Law  relating  to  fraudulent transfers  and  obligations.    We
understand,  without independent  verification, that,  to the  extent they
have  deemed necessary  in the  context of  the proposed  transaction, the
Banks have satisfied themselves  on the basis of, among other  things, the
financial  information furnished to the  Banks and their  knowledge of the
credit facilities available  to the Borrowers,  that neither Holdings  nor
any of its Subsidiaries is insolvent  and neither Holdings, nor any of its
Subsidiaries will  be rendered insolvent by  the transactions contemplated
by the  Credit Agreement and  the other  Credit Documents and  that, after
giving  effect to  such  transactions, neither  Holdings  nor any  of  its
Subsidiaries  will be left with  unreasonably small capital  with which to
engage in its anticipated  business and that neither the  Holdings nor any
of its Subsidiaries will have intended  to incur, or will have believed it
has incurred, debts beyond its ability to pay as such debts mature.

          This opinion is limited of the federal law of  the United States
of America and the law of the State of New York.

                                   Very truly yours,
                            
             
                                   /s/ White & Case
                                   -----------------------<PAGE>


                                                                EXHIBIT F
                                                                ---------


                        [NAME OF CREDIT PARTY]
                   FORM OF SECRETARY'S CERTIFICATE
                   -------------------------------


            I,  the  undersigned,  certify  that I  am  the  duly  elected
Secretary  of [Name of Credit Party], a corporation organized and existing
under the laws of ________ (the "Company"), and  further certify on behalf
of the Company that: 

            1.    This  Certificate is  furnished pursuant  to  the Credit
Agreement,  dated as  of  February  27,  1997, among  ENSCO  International
Incorporated, ENSCO Delaware, Inc., ENSCO Offshore Company, ENSCO Offshore
U.K.  Limited, Dual Holding Company, the lending institutions from time to
time party thereto, Christiania  Bank og Kreditkasse, New York  Branch and
Den norske Bank ASA, New York Branch, as co-agents and Christiania Bank og
Kreditkasse, New York Branch, as administrative agent and security trustee
for such  Banks (as amended, modified  or supplemented from time  to time,
such Credit Agreement, as in effect on the date of this Certificate, being
herein called the "Credit Agreement").   Unless otherwise defined  herein,
capitalized terms used  in this  Certificate shall have  the meanings  set
forth in the Credit Agreement.

            2.  Attached hereto  as Exhibit A  is a certified copy  of the
Certificate of Incorporation of the Company, as filed in the Office of the
Secretary of State of the State of _________________ on ___________, 19__,
together with all amendments thereto adopted through the date hereof.

            3.  Attached  hereto as Exhibit B is  a true and  correct copy
of the  By-Laws of the Company which were duly  adopted, are in full force
and  effect  on   the  date  hereof,   and  have  been  in   effect  since
_____________, 19__.

            4.  Attached  hereto as Exhibit C  is a true and correct  copy
of resolutions which were  duly adopted on __________, 19__  [by unanimous
written consent of the Board of Directors of the Company] [by a meeting of
the Board of Directors  of the Company at  which a quorum was  present and
acting throughout], and said resolutions have not  been rescinded, amended
or modified.  Except as attached hereto as Exhibit C,  no resolutions have
been adopted by the Board of Directors of the Company  which deal with the
execution, delivery or  performance of  any Credit Document  to which  the
Company is a party.

            5.  There is no  provision of the Certificate of Incorporation
or By-Laws of the Company limiting the powers of the Board of Directors to
pass or consent to the resolutions referred  to above and such resolutions
are in conformity with the provisions of said Certificate of Incorporation
and By-Laws.<PAGE>


            6.   The  following named individuals are  elected officers of
the Company,  each holds  the  office of  the Company  set forth  opposite
his/her name  and has held  such office since  __________, 19__<F1>.   The
signature  written opposite  the name  and title  of each such  officer is
his/her genuine signature.

             NAME<F2>              OFFICE             SIGNATURE  
          ______________         ___________        _____________

          ______________         ___________        _____________

          ______________         ___________        _____________


        IN  WITNESS WHEREOF, I have hereunto  set my hand this  ___ day of
February, 1997.


                                          ______________________________
                                          Name:
                                          Title: Secretary


__________________

<F1>    Insert a date prior to the  time of any corporate  action relating
        to the Credit Documents or related documentation.
<F2>    Include name, office  and signature of each officer who  will sign
        any  Credit Document,  including  the  officer who  will  sign the
        certification  at   the  end  of  this   Certificate  or   related
        documentation.
<PAGE>


I,  the undersigned,  Director of the  Company, certify  on behalf  of the
Company that:

        1.   [Name of  Person  making above  certifications] is  the  duly
elected and qualified Secretary of the Company  and the signature above is
his genuine signature.


        IN  WITNESS WHEREOF, I have hereunto  set my hand this  ___ day of
February, 1997.




                              ____________________________
                              Name:
                              Title: Director<PAGE>


                                                              EXHIBIT G-1
                                                              -----------



                   FORM OF BORROWER A SECURITY AGREEMENT
                   -------------------------------------


        SECURITY AGREEMENT (as amended, modified or supplemented from time
to time, this "Agreement"), dated as  of February  27, 1997, between ENSCO
Offshore Company (the "Assignor") and Christiania Bank og Kreditkasse, New
York Branch, as Collateral Agent (the "Collateral Agent"), for the benefit
of  the Banks, the Letter  of Credit Issuer,  and the Administrative Agent
under, and as  defined in,  the Credit Agreement  hereinafter referred  to
(such  Banks,  Letter  of  Credit  Issuer  and  Administrative  Agent  are
hereinafter called  the "Secured Creditors").  Except as otherwise defined
herein,  capitalized terms used herein and defined in the Credit Agreement
shall be used herein as so defined.


                            W I T N E S S E T H :


        WHEREAS, ENSCO  International Incorporated, ENSCO Delaware,  Inc.,
ENSCO  Offshore  Company  ("Borrower  A"),  ENSCO  Offshore  U.K.  Limited
("Borrower  B"),   Dual  Holding  Company  ("Borrower   C"),  the  lending
institutions  from  time  to  time  party  thereto,  Christiania  Bank  og
Kreditkasse, New York Branch and Den  norske Bank ASA, New York Branch, as
co-agents and  Christiania  Bank  og  Kreditkasse,  New  York  Branch,  as
administrative  agent  and security  trustee  have entered  into  a Credit
Agreement, dated as  of February  27, 1997 (as  modified, supplemented  or
amended from time to time, the "Credit Agreement"), providing for the mak-
ing of Loans and the issuance of, and participation in,  Letters of Credit
as contemplated therein;

        WHEREAS, Borrower  A, Borrower  B and Borrower C  desire to  incur
Loans under the Credit Agreement;

        WHEREAS, Borrower  A and  Borrower  C desire  to have  Letters  of
Credit issued for their respective accounts under the Credit Agreement.

        WHEREAS,  the Assignor, a Delaware corporation,  is the sole owner
of  the United States registered offshore drilling rigs ENSCO 68 (official
no.  574668), ENSCO  81  (official no.  606512),  ENSCO 82  (official  no.
606912), ENSCO 83 (official  no. 605536), ENSCO 84 (official  no. 637544),
ENSCO 86 (official no.  643110), ENSCO 87 (official no.  648969), ENSCO 88
(official  no. 645637), ENSCO 89 (official no. 652440), ENSCO 90 (official
no.  647859), ENSCO  93  (official no.  651385),  ENSCO 94  (official  no.
638685),  ENSCO 95  (official  no. 642112),  ENSCO  98 (f/k/a/  ENSCO  63)
(official  no. 589096)  and  ENSCO 99  (official no.  682070) (all  of the
aforementioned vessels  being  herein  collectively  referred  to  as  the
"Rigs");

        WHEREAS,   the   Assignor   has  unconditionally   guaranteed  the
obligations  of Borrower B  and Borrower C under  the Credit Agreement and
the other Credit Documents;<PAGE>


        WHEREAS, it is a  condition precedent to  the making of Loans  and
the issuance  of Letters of Credit  under the Credit Agreement  and to the
occurrence of the Effective Date that the Assignor shall have executed and
delivered to the Collateral Agent this Agreement; and

        WHEREAS, the Assignor desires to execute this Agreement to satisfy
the condition described in the preceding paragraph;

        NOW, THEREFORE,  in consideration of the  benefits accruing to the
Assignor, the receipt  and sufficiency of  which are hereby  acknowledged,
the Assignor hereby makes the following representations and  warranties to
the Collateral Agent and  hereby covenants and agrees with  the Collateral
Agent as follows:


        SECTION 1.  OBLIGATIONS SECURED.

        1.01   Obligations  Secured.    The  Agreement  is  made  for  the
benefit   of  the  Secured  Creditors  to  secure,  with  respect  to  the
obligations of  Borrower A under the Credit Agreement and the other Credit
Documents,  each of the following, and with  respect to the obligations of
Borrower B and Borrower C under the Credit Agreement and  the other Credit
Documents, the Assignor's guaranty of each of the  following: (i) the full
and  prompt payment when due  of (A) the principal of  and interest on the
Notes  issued, and  Loans  made,  under  the  Credit  Agreement,  and  all
reimbursement obligations  and Unpaid Drawings with respect to the Letters
of Credit issued under the Credit  Agreement and (B) all other obligations
and  indebtedness (including,  without  limitation, indemnities,  Fees and
interest thereon) of the  Borrowers to the Secured Creditors,  whether now
existing or hereafter incurred under, arising out of or in connection with
the   Credit  Agreement  and  the  other  Credit  Documents  and  the  due
performance  and  compliance  by the  Borrowers  with  all  of the  terms,
conditions  and agreements contained in the Credit Agreement and the other
Credit Documents; (ii) any and  all sums advanced by the Collateral  Agent
in order to preserve  the Collateral (as hereinafter defined)  or preserve
its security  interest in the Collateral;  (iii) in the event  of any pro-
ceeding   for  the   collection  or   enforcement  of   any  indebtedness,
obligations, or liabilities  of the  Borrowers referred to  in clause  (i)
above, after an  Event of Default shall  have occurred and be  continuing,
the reasonable  expenses of  the Collateral  Agent of re-taking,  holding,
preparing  for sale  or  lease,  selling  or  otherwise  disposing  of  or
realizing on the Collateral, or of any exercise by the Collateral Agent of
its rights hereunder, together with reasonable attorneys' fees of  counsel
to the Collateral  Agent and court costs; and (iv)  all reasonable amounts
paid  by  any Indemnitee  as to  which such  Indemnitee  has the  right to
reimbursement under Section  11 of this  Agreement (all such  obligations,
liabilities, sums and  expenses referred  to in clauses  (i) through  (iv)
above   being  collectively  referred  to  as  the  "Obligations").    The
"Obligations" shall include  extensions of credit  of the types  described
above, whether outstanding on the date of  this Agreement or extended from
time to time after the date of this Agreement.


        SECTION 2.  ASSIGNMENT OF EARNINGS.

        2.01   The  Assignor,   as  legal  and  beneficial  owner,  hereby
assigns, transfers and sets over unto the Collateral Agent for the benefit<PAGE>


of  the Secured  Creditors and  their successors  and assigns,  and hereby
grants  the Collateral  Agent a security  interest in,  all of  its right,
title and interest in and to: (i) all day rate payments, freights, charter
hire and any other moneys earned and to be earned, due or to become due or
paid or  payable to,  or for  the account of  the Assignor,  of whatsoever
nature, arising out  of any charter  parties, drilling  contracts or as  a
result  of  the ownership,  chartering and  other  operations of  any kind
whatsoever by the Assignor or its agents of the Rigs, (ii) all  moneys and
claims for moneys due and to become due to the Assignor and all claims for
damages  arising  out of  the  breach of  any  and all  present  or future
drilling  contracts,  charter  parties,  and  operations  of  every   kind
whatsoever  of the Rigs  and in and  to any  and all claims  and causes of
action  for  money, loss  or  damages that  may  accrue or  belong  to the
Assignor, their  successors, or  assigns, arising  out  of or  in any  way
connected with  any  and all  present  and future  requisitions,  drilling
contracts, charter parties,  and other operations of the Rigs  of any kind
whatsoever, (iii) all  moneys and claims for moneys due  and to become due
to  the Assignor, and all claims  for damages in respect  of the actual or
constructive total loss of or requisition or use of or title to any of the
Rigs  subject to  Section 3.03(c)  of the  Credit  Agreement and  (iv) any
proceeds  of   any  of   the   foregoing  (collectively,   the   "Earnings
Collateral").

        2.02   Subject  to  the  provisions   of  Section  2.03   of  this
Agreement, the  Collateral  Agent's  security  interest  in  all  accounts
receivable  included  in,  or  representing  proceeds  of,  the   Earnings
Collateral shall automatically be and be deemed released, without the need
for any action on the part of  the Collateral Agent, from time to time  as
such  accounts receivable arise or  are created, or  as funds representing
payments  of  such  Collateral (or  part  thereof)  are  collected by  the
Assignor. 

        2.03   Upon the  occurrence  of an  Event of  Default pursuant  to
Section  9.05 of the Credit Agreement (a "Bankruptcy Default") and without
any further act or notice, or upon the giving by the Collateral Agent of a
written  notice (a "Release Termination Notice") to the Assignor after the
occurrence  and during  the  continuance  of  an  Event  of  Default,  the
automatic  release set  forth  in Section  2.02  of this  Agreement  shall
terminate.

        2.04   Upon the  occurrence of an Event  of Default, the  Assignor
hereby represents, warrants and undertakes that:

               (a)  notice of  this Agreement in the  form attached hereto
                    as  Exhibit  1  will  be  promptly  delivered  to  any
                    charterers of the Rigs; and

               (b)  it  will  use its  good  faith  efforts  to cause  any
                    charterer to  execute a Consent and  Agreement to this
                    Agreement in the form attached hereto as Exhibit 2 and
                    deliver such Consent  and Agreement to  the Collateral
                    Agent.

        2.05   Upon the occurrence of an Event of Default,  the Collateral
Agent shall be entitled to receive  all payments of Earnings Collateral of
the Rigs payable to the Assignor  and assigned hereby.  Such payment shall
be  made to the  account of the  Collateral Agent, and  the Assignor shall<PAGE>


cause all sums so payable to  the Assignor and assigned hereby to be  paid
directly into such account.

        2.06   It  is  hereby expressly  agreed  that,  anything contained
herein to the  contrary notwithstanding, the Assignor  shall remain liable
under all charters  and contracts pertaining  to the  Rigs to perform  the
obligations  assumed by it thereunder, and the Collateral Agent shall have
no obligation or liability of any nature whatsoever under any such charter
or contract by reason of, or arising out of, this Agreement, nor shall the
Collateral Agent  be required to assume  or be obligated in  any manner to
perform or fulfill any obligation of the Assignor under or pursuant to any
such charter or contract or to make any payment  or make any inquiry as to
the nature or sufficiency of any payment received by the Collateral Agent,
or, unless and until  indemnified to its satisfaction, to  present or file
any claim or to take any other action to collect or enforce the payment of
any  amounts which  may have been  assigned to  it or  to which it  may be
entitled hereunder or pursuant hereto at any time or times.

        2.07   The Assignor shall  promptly notify the Collateral Agent in
writing of the commencement and termination of any period during which any
of the Rigs owned by it are requisitioned.

        2.08   Upon the occurrence of an Event of Default,  the Collateral
Agent  has  the right  to give  notice of  this  Agreement to  all account
debtors.

        2.09   The  Collateral Agent  shall not  be required  to make  any
inquiry as to  the nature or  sufficiency of any  payment received by  the
Collateral Agent, or, unless  and until indemnified  to  its satisfaction,
to present  or file any claim, or  to take any other  action to collect or
enforce the payment of any amounts which  may have been assigned to it  or
to which  it may be entitled  hereunder or pursuant hereto at  any time or
times.


        SECTION 3.  ASSIGNMENT OF INSURANCE

        3.01   The  Assignor hereby  sells, assigns, transfers,  sets over
and grants a  security interest  unto the Collateral  Agent as  collateral
security for  the  Obligations,  in  and to  the  following  (all  of  the
following, collectively, the "Insurance Collateral" and, together with the
Earnings Collateral, the "Collateral"):  (i) all policies and contracts of
insurances in respect of the Rigs whether now or hereafter  to be effected
and all renewals of or replacements for the same, (ii) all claims, returns
of premium and other moneys  and claims for moneys due and to  be come due
under said insurances  or in respect  of said insurances, (iii)  all other
rights of the Assignor under or in respect of said insurances and (iv) any
proceeds of any of the foregoing. 

        3.02   It  is expressly agreed  that anything  herein contained to
the contrary notwithstanding, the Assignor shall remain  liable under said
insurances to perform all of the obligations assumed by it thereunder  and
the  Collateral Agent  shall have  no obligation or  liability (including,
without  limitation,  any obligation  or  liability  with respect  to  the
payment of premiums, calls or assessments) under said insurances by reason
of  or  arising  out  of  this  instrument  of assignment  nor  shall  the
Collateral  Agent be  required or obligated  in any  manner to  perform or<PAGE>


fulfill  any obligations  of  the  Assignor  under  or  pursuant  to  said
insurances or to make any payment or to make any inquiry  as to the nature
or sufficiency  of any payment  received by it  or to present  or file any
claim,  or to take any  other action to collect  or enforce the payment of
any amounts which or  may have been assigned to  it or to which it  may be
entitled hereunder at any time or times.

        3.03   The Assignor hereby  covenants and agrees to deliver notice
of this Assignment, in the form of Annex I hereto, to all underwriters and
that  where the consent of any underwriter  is required pursuant to any of
the  insurances assigned  hereby, the  Assignor shall  use its  good faith
efforts to  obtain  such consent  in  the form  of  Annex II  hereto,  and
evidence thereof  shall be given to the  Collateral Agent, and there shall
be  duly endorsed upon all  slips, cover notes,  policies, certificates of
entry or other instruments issued  or to be issued in connection  with the
insurances  assigned hereby such clauses as to additional named assured or
loss payees as the Collateral Agent may reasonably request.  In all cases,
unless  otherwise agreed in writing  by the Collateral  Agent, such slips,
cover notes, notices,  certificates of  entry or  other instruments  shall
show  the Collateral Agent as  additional named assured  and shall provide
that there will be no recourse against the Collateral Agent for payment of
premiums, calls or assessments.

        3.04   In the  event that the  Insurance Collateral or any portion
thereof is sold in connection with a sale permitted by Section 8.02 of the
Credit  Agreement or  by  the  proviso  contained  in  the  definition  of
"Collateral Disposition" in the Credit  Agreement or is otherwise released
at the direction of  the Required Banks (or  all the Banks, to  the extent
required  by Section 12.12 of the Credit Agreement), the Collateral Agent,
at the request and expense of the Assignor, will duly assign, transfer and
deliver  to the Assignor (without  recourse and without any representation
or warranty) such of  the Insurance Collateral (and releases  therefor) as
is then being  (or has  been) so sold  or released  and as may  be in  the
possession of the Collateral  Agent and has not theretofore  been released
pursuant to  this Agreement.   At any time  the Assignor desires  that the
Insurance  Collateral or a portion thereof be released as provided in this
section,  the Assignor shall deliver to the Collateral Agent a certificate
signed  by  an Authorized  Officer (as  defined  in the  Credit Agreement)
stating that the release of the Insurance Collateral or portion thereof is
permitted pursuant to this section.

        3.05   The Assignor  hereby  authorizes  the Collateral  Agent  to
execute and file Financing Statements (Form UCC-1) and amendments  thereto
as provided in Article 9 of the Uniform Commercial Code.


        SECTION 4.  FURTHER ASSURANCES.

        The Assignor will, at any  time and from time to time,  at its own
expense, promptly execute and deliver all further agreements,  instruments
and other documents and take  all further action that may be  necessary or
that the Collateral  Agent may reasonably request in  order to perfect and
protect  the security interest purported to be created hereby or otherwise
to enable  the Collateral  Agent to  exercise and  enforce its rights  and
remedies hereunder.<PAGE>


        SECTION 5.  TRANSFERS AND OTHER LIENS.

        The  Assignor  will  not,  without  the  written  consent  of  the
Collateral Agent, (i) sell, assign (by  operation of law or otherwise)  or
otherwise  dispose  of  any interest  in  the  Collateral  (other than  as
expressly permitted under this Agreement  and the other Credit  Documents)
or (ii) create  or suffer to  exist any Lien,  security interest or  other
charge or encumbrance upon  or with respect  to any Collateral except  for
Permitted Liens and the security interest purported to be created hereby.


        SECTION 6.  ATTORNEY-IN-FACT.

        The  Assignor   hereby  appoints  the  Collateral   Agent  as  the
Assignor's attorney-in-fact, with full authority only after the occurrence
of and  during the continuance  of an Event  of Default, in  the place and
stead of  the Assignor and in the name  of the Assignor or otherwise, from
time  to  time  in  the  Collateral  Agent's  discretion  to  execute  any
instrument and to take any other action which the Collateral  Agent may in
good faith  reasonably  deem  necessary  or advisable  to  accomplish  the
purposes  of this  Agreement  or to  facilitate  the assignment  or  other
transfer by  the Collateral Agent of  any or all of  its rights hereunder,
including, without  limitation, (i)  to receive,  endorse and  collect all
instruments  made payable to  the Assignor  and representing  any interest
payment or  other distribution in  respect of the  Collateral and to  give
full discharge  for the same and (ii)  to execute and deliver  any and all
instruments and other documents  that the Collateral Agent may  request in
connection with the exercise by the Collateral Agent  of any or all of its
rights hereunder.  Such  appointment of the Collateral Agent  as attorney-
in-fact is irrevocable and coupled with an interest.


        SECTION 7.  PERFORMANCE BY THE COLLATERAL AGENT.

        If  the  Assignor fails  to  perform any  agreement or  obligation
contained  herein,  the  Collateral  Agent itself  may  perform  or  cause
performance of such agreement  or obligation, and the  reasonable expenses
of  the Collateral Agent incurred in connection therewith shall be payable
to the Collateral Agent by the Assignor.


        SECTION 8.  RESPONSIBILITY OF THE COLLATERAL AGENT.

        Other  than the  exercise of  reasonable care  to assure  the safe
custody of the Collateral while held hereunder, the Collateral Agent shall
have no duty or liability to preserve rights pertaining thereto  and shall
be  relieved of all responsibility for the Collateral upon surrendering it
or tendering  surrender of it to the Assignor.  The Collateral Agent shall
be  deemed to  have  exercised reasonable  care in  the  custody and  pre-
servation  of  the  Collateral in  its  possession  if  the Collateral  is
accorded treatment substantially equal to that which  the Collateral Agent
accords  its own  property.    Without  limiting  the  generality  of  the
foregoing,  neither  the  Collateral  Agent  nor  any  of  its  directors,
officers,  agents or  employees shall  be liable  (i) for  any  failure to
invest  or reinvest any cash in accordance  herewith in the absence of its
or  their own gross  negligence or  willful misconduct  or for  any losses
incurred by reason of investments made by the Collateral Agent pursuant to<PAGE>


Section 2.03 or  (ii) for any action  taken or omitted to be  taken by the
Collateral  Agent  (x) in  good  faith in  accordance  with the  advice of
counsel with  respect  to  any question  as  to the  construction  of  any
provision  hereof  or any  action  to  be taken  by  the Collateral  Agent
hereunder or (y) in accordance with any instructions or other notice which
the Collateral  Agent believes in good  faith to be properly  given by the
Assignor  hereunder.    This  Section  8  shall  have  no  application  to
Christiania  Bank og  Kreditkasse  except in  its  capacity as  Collateral
Agent.


        SECTION 9.  APPLICATION OF PROCEEDS.

        (a)   Subject to the applicability  of Section 10  of the US Fleet
Mortgage  and the provisions of  Section 3.03(c) of  the Credit Agreement,
all  moneys collected  by  the Collateral  Agent upon  any  sale or  other
disposition  of any Collateral, together with all other moneys received by
the  Collateral Agent  hereunder  or  under  any  of  the  other  Security
Documents, shall be applied as follows:

          (i)  first, to the payment of  all amounts owing  the Collateral
    Agent of the type described in clauses (ii) and (iii) of Section 1.01;

         (ii)  second, to the extent  moneys remain after  the application
    pursuant  to  the  preceding  clause (i),  an  amount  equal  to   the
    outstanding Obligations  shall  be paid  to the  Secured Creditors  as
    provided  in Section  9(c), with  each  Secured Creditor  receiving an
    amount equal  to such Obligations held  by it or, if  the proceeds are
    insufficient to pay in full all  such Obligations, its Pro Rata  Share
    (as defined below) of the amount remaining to be distributed; and

        (iii)  third,  to the extent  moneys remain  after the application
    pursuant  to the  preceding clauses  (i) and  (ii), and  following the
    termination of this Agreement pursuant to Section 12, any surplus then
    remaining  shall be  paid to  the Assignor,  subject, however,  to the
    rights of the holder of any then existing Lien of which the Collateral
    Agent has actual notice (without investigation).

        (b)  For purposes  of this Agreement "Pro  Rata Share" shall mean,
when  calculating  a Secured  Creditor's  portion of  any  distribution or
amount  in  respect  of  any  Obligations,  the  amount  (expressed  as  a
percentage) equal  to a fraction the numerator of which is the then unpaid
amount  of such Obligations owing to or  held by such Secured Creditor and
the  denominator of  which  is the  then outstanding  amount  of all  such
Obligations.    For purposes  of determining  the  amount payable  to each
Secured Creditor, the Collateral  Agent shall be entitled to  request each
Secured  Creditor to  furnish  it with  written  notice of  the  amount of
Obligations then owed to it and shall be entitled to rely upon the amounts
stated therein in making such distributions.

        (c)    All  payments  required  to be  made  to  Secured Creditors
hereunder shall be  made to the  Collateral Agent for  the account of  the
Secured Creditors.

        (d)  For purposes of applying payments received in accordance with
this Section  9, the Collateral Agent  shall be entitled to  rely upon (i)
the Administrative Agent under  the Credit Agreement and (ii)  the Secured<PAGE>


Creditors for a  determination (which  the Administrative  Agent and  each
Secured  Creditor, by their acceptance  of the benefits  of this Agreement
shall be obligated to provide upon request of the Collateral Agent) of the
outstanding  Obligations owed  to the  Secured Creditors.   Unless  it has
actual  knowledge (including  by  way of  written  notice from  a  Secured
Creditor) to  the  contrary, the  Administrative  Agent under  the  Credit
Agreement, in  furnishing information pursuant to  the preceding sentence,
and the Collateral Agent, in acting hereunder, shall be entitled to assume
that  (x) no  obligations  other than  principal,  interest and  regularly
accruing fees are owing to any Secured Creditor.


        SECTION  10.  REPRESENTATIONS,  WARRANTIES  AND  COVENANTS OF  THE
ASSIGNOR.

        10.01   The  Assignor hereby  represents and  warrants it  has not
assigned  or pledged, and hereby covenants that, without the prior written
consent  thereof of the Collateral Agent,  so long as this Agreement shall
remain in effect, it will  not assign or pledge  the whole or any part  of
the  right, title  and interest hereby  assigned to anyone  other than the
Collateral Agent,  its successors or assigns, and that it will not take or
omit  to take any action, the taking  or omission of which might result in
an alteration or impairment of the Collateral or this Agreement, or of any
of the rights created in the Collateral by this Agreement.

        10.02    As  of  the  Restatement Effective  Date,  this Agreement
creates a valid and enforceable perfected security interest in and Lien on
all of the Collateral in favor of the  Collateral Agent for the benefit of
the  Banks, and  no  filings or  recordings are  required to  perfect such
security  interest except for filings or recordings required in connection
with  this Agreement which shall have  been made upon or  prior to (or are
the subject of arrangements, satisfactory to the Administrative Agent, for
filing  on or promptly  after the date  of) the execution  and delivery of
this Agreement.


        SECTION 11.  INDEMNITY.

        11.01   The Assignor  hereby covenants with the  Assignee for  the
benefit of the  Collateral Agent and  the Banks  that it will  pay to  the
Assignee  on  demand  all moneys  whatsoever  which  the  Assignee or  the
Collateral Agent or the Banks shall or may reasonably expend, be put to or
become  liable for, in or about the protection, maintenance or enforcement
of the security created by this Agreement  or in or about the exercise  by
the Assignee  or the Collateral Agent  and the Banks of any  of the powers
vested  in  it or  them  under the  Mortgages  or hereunder  together with
interest thereon  at the rate provided  for in Section 1.08  of the Credit
Agreement from  the date when such moneys were expended by the Assignee or
such Bank  until the date of  actual receipt, whether before  or after any
relevant judgment.

        11.02   Any  amounts  paid by  any  Indemnitee as  to  which  such
Indemnitee  has the  right to  reimbursement shall  constitute Obligations
secured  by the  Collateral.   The indemnity  obligations of  the Assignor
contained  in this  Section 11  shall continue  in full  force and  effect
notwithstanding the full payment of all the Notes  issued under the Credit<PAGE>


Agreement  and  all  of  the  other Obligations  and  notwithstanding  the
discharge thereof.


        SECTION 12.  TERMINATION; RELEASE; PARTIAL RELEASE.

        (a)    On the date on which the  Credit Agreement and all  Letters
of Credit shall have been terminated, when no Note remains outstanding and
all Obligations shall have  been irrevocably paid in full,  this Agreement
shall  terminate, and the Collateral Agent, at  the request and expense of
the Assignor, will execute and deliver to the Assignor a proper instrument
or instruments  acknowledging the  satisfaction  and termination  of  this
Agreement,  and will  duly assign,  transfer and  deliver to  the Assignor
(without  recourse and without any representation or warranty) such of the
Collateral  as  may  remain in  the  possession  of  the Collateral  Agent
together  with  any moneys  at  the  time  held  by the  Collateral  Agent
hereunder.


        SECTION 13.  NOTICES, ETC.

        Except  as otherwise  expressly provided  herein, all  notices and
other communications provided for hereunder  shall be delivered and become
effective in accordance with Section 12.03 of the Credit Agreement.


        SECTION 14.  MISCELLANEOUS.

        14.01  This Agreement shall be  binding upon the Assignor  and its
successors and assigns (although the Assignor may not assign its rights or
obligations under this Agreement) and shall inure to the benefit of and be
enforceable  by the Collateral Agent and its  successors and assigns.  The
headings in  this Agreement are for  purposes of reference only  and shall
not limit or define the meaning hereof.  THIS AGREEMENT AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH
AND BE GOVERNED BY THE LAW OF THE  STATE OF NEW YORK.  This Agreement  may
be  executed in  any number  of counterparts,  each of  which shall  be an
original,  but all  of  which  shall  constitute  one  instrument.    This
Agreement shall  become effective on the date on which each of the parties
shall have executed  and delivered a copy  hereof.  In the event  that any
provision of this  Agreement shall at any time for  any reason be declared
or decided  to be invalid,  void or  otherwise inoperative by  a court  of
competent jurisdiction, such declaration or decision shall not affect  the
validity of  any other provision or  provisions of this Agreement,  or the
validity of this Agreement as a whole.  In the event that by reason of any
law or regulation in force or to become in force, or by reason of a ruling
of any court of competent jurisdiction, or by any other reason whatsoever,
this Agreement is rendered either wholly or partly defective, the Assignor
shall  furnish  the Collateral  Agent  with an  alternative  assignment or
security and do all such other acts as are reasonably required in order to
ensure and give effect to the full intent of this Agreement.

        14.02  It is declared and agreed that the security created by this
Agreement  shall be held by the Collateral  Agent as a continuing security
for the payment of all moneys which may at  any time and from time to time
be or  become payable by the  Assignor under the Credit  Agreement and the
other Credit  Documents and  that  the security  so created  shall not  be<PAGE>


satisfied by all intermediate payment  or satisfaction of any part of  the
amount  hereby  secured and  that  the security  so  created  shall be  in
addition to and  shall not  in any way  be prejudiced  or affected by  any
collateral or other security now or hereafter held by the Collateral Agent
for all or any part of the moneys hereby secured.

        14.03  Each and every right, power  and remedy given herein or  in
the Credit Agreement or  in the other  Credit Documents to the  Collateral
Agent shall be cumulative and  shall be in addition to every  other right,
power and remedy of the Collateral Agent now or hereafter existing at law,
in  equity or  by statute,  and each  and every  right, power  and remedy,
whether herein given or otherwise existing, may be  exercised from time to
time, in whole or in part, and as often and in such order as may be deemed
expedient by the Collateral Agent, and the exercise or the commencement of
the exercise of any right, power or  remedy shall not be construed to be a
waiver of the  right to exercise at the same time  or thereafter any other
right, power  or remedy.  No delay or  omission by the Collateral Agent in
the exercise of any right or power in the pursuance of any remedy accruing
upon any  breach or default by  the Assignor shall impair  any such right,
power or remedy or be construed to be a waiver of any such right, power or
remedy or to be an  acquiescence therein; nor shall the acceptance  by the
Collateral Agent of any security or of any payment of or on account of any
of the amounts due from the  Assignor to the Collateral Agent and maturing
after any  breach or  default or  of any payment  on account  of any  past
breach  or default  be construed  to  be a  waiver  of any  right to  take
advantage of any future breach or default or of any past breach or default
not completely cured thereby.


        SECTION 15.  WAIVER; AMENDMENT.

        None of the terms and conditions of this Agreement may be changed,
waived, modified or varied in any manner whatsoever unless in writing duly
signed by  the  Assignor and  the Collateral  Agent (with  the consent  of
either the Required Banks (as defined  in the Credit Agreement) or, to the
extent required  by Section  12.12 of  the  Credit Agreement,  all of  the
Banks).


        SECTION 16.  SECURED CREDITOR ACKNOWLEDGMENT.

        By accepting the benefits of this Agreement, each Secured Creditor
acknowledges  and agrees that the rights and obligations of the Collateral
Agent shall be as set forth in Section 12 of the Credit Agreement.<PAGE>


        IN WITNESS WHEREOF,  the Assignor  and the  Collateral Agent  have
caused this  Agreement to be executed by  their duly elected officers duly
authorized as of the date first above written.


ADDRESS:                              ENSCO OFFSHORE COMPANY

1445 Ross Avenue
Suite 2700
Dallas, Texas  77202-2792             By________________________________
Attention:  Chief Financial Officer     Title:  
Tel: (214) 922-1500
Fax: (214) 855-0080
               

11 West 42nd Street                   CHRISTIANIA BANK OG KREDITKASSE,
New York, New York  10036             NEW YORK BRANCH, as Collateral Agent
Attention: Hans Chr. Kjelsrud   
Tel: (212) 827-4814
Fax: (212) 827-4888
                                      By________________________________
                                        Title:


                                      By________________________________
                                        Title:  <PAGE>



                                                             EXHIBIT 1
                                                                 to       
                                                        Security Agreement
                                                        ------------------



                               NOTICE OF ASSIGNMENT

TO:

TAKE NOTICE THAT:

    By a Security Agreement, dated the __ day of February, 1997 made by us
    to  Christiania Bank  og Kreditkasse,  as agent (the  "Assignee"), and
    relating to  the United States  flag vessel ________  (the "Rig"),  we
    have assigned to the Assignee as from  the date hereof all our  right,
    title and interest in and to any moneys whatsoever payable to us under
    that  certain [Charter Contract] dated as  of ________, ____ as at any
    time amended  (the "Contract") between yourselves  and the undersigned
    concerning the  Rig, as  the Contract  may at  any time be  amended or
    supplemented, and all other rights and benefits whatsoever accruing to
    us which  arise or may arise  from the operation of  the Rig under the
    Contract  including (but  without prejudice  to the generality  of the
    foregoing) all  claims for damages for  any breach of  the Contract by
    you.

DATED THIS ___  day of ___________, _____.


                                      [                            ]


                                      By __________________________
                                         Its:<PAGE>


                                                             EXHIBIT 2
                                                                 to       
                                                        Security Agreement
                                                        ------------------



                           CONSENT AND AGREEMENT


The undersigned, [                ],  a party to the Contract to which the
Notice  of  Assignment  delivered  pursuant  to  the  foregoing   Security
Agreement  refers (terms defined in the Security Agreement are used herein
with the same meaning), in consideration  of the sum of one dollar ($1.00)
lawful money of the United  States of America and other good  and valuable
consideration, paid  by Christiania  Bank  og Kreditkasse,  as agent  (the
"Assignee"), the  receipt of which is hereby acknowledged, hereby acknowl-
edges  notice of  and  consents and  agrees  to the  foregoing  collateral
assignment of  earnings and to all  of the terms thereof  and agrees that:
(1) it will make payment directly  to the account advised by the Assignee,
of all  moneys due  and to become  due from  it under  the Contract  until
receipt of  written notice from the  Assignee that all obligations  to the
Banks secured by  said Security Agreement have been paid  in full; and (2)
any  such payment  shall be  final and  the undersigned  will not  seek to
recover from the Assignee for any reason whatsoever any moneys paid by the
undersigned  to the Assignee by virtue of the foregoing Security Agreement
and this Consent and Agreement but  this shall not prevent the set off  or
credit against or  deduction from any  moneys payable  to the Assignee  by
virtue  of said Security Agreement of  amounts owing to the undersigned by
the Assignor under the Contract.

[           ], as charterer,  confirms and agrees that the Contract is  in
full force  and effect and is enforceable in accordance with its terms and
the Assignor is not in default thereunder.

This  Consent  and  Agreement  shall  be  governed  by  and  construed  in
accordance  with the  internal laws  of  the State  of  New York,  without
reference to principles of conflicts of law.

Dated: ___________, ____


                                      [                ]


                                      By _________________<PAGE>



                                                              ANNEX 1 
                                                                 to       
                                                        Security Agreement
                                                        ------------------



                            NOTICE OF ASSIGNMENT


    __________________________________________ (the "Owner"), the owner of
the United States  flag offshore drilling  rig _____________ (the  "Rig"),
HEREBY GIVES NOTICE that  by a Security Agreement dated  February __, 1997
and made between the Owner and  Christiania Bank og Kreditkasse, New  York
Branch,  as Collateral Agent (the "Assignee") for itself and certain other
Banks, the Owner assigned to the  Assignee all of the Owner's right, title
and interest  in and to all  insurances and the benefit  of all insurances
now  or  hereafter  taken out  in  respect of  the  Rig.   This  Notice of
Assignment and  loss payable clauses  substantially similar  to those  set
forth below are to be  indorsed on all policies and certificates  of entry
evidencing such insurance.


                                      [OWNER]


                                      By_________________________
                                        Its:

Loss Payable Clauses:
- --------------------
    All amounts of whatsoever nature payable under any insurance shall  be
payable  to the  Security Trustee  for distribution  first to  itself, the
Secured Creditors, the Co-Agents and thereafter to the Owner or  others as
their interests may appear.  Nevertheless, until otherwise required by the
Security  Trustee by notice to the underwriters, (i) amounts payable under
any insurance  on the Rigs  with respect  to the protection  and indemnity
risks shall  be paid directly to the  Owner to reimburse it  for any loss,
damage or expense incurred by it  and covered by such insurance or to  the
person to whom any liability covered by such insurance has been  incurred,
and (ii)  amounts payable  under any  insurance with respect  to the  Rigs
involving  any  damage  to   any  Rigs  not  constituting  an   actual  or
constructive  total loss, shall be  paid by the  underwriters directly for
the repair,  salvage or other charges involved or, if the Owner shall have
first fully  repaired the  damage  or paid  all of  the  salvage or  other
charges shall be paid  to the Owner as reimbursement  therefore, PROVIDED,
no amounts  in excess  of US$2,000,000 shall  be paid from  any insurances
without the prior written consent of the Security Trustee.

    In  the event of an actual or constructive total loss or a compromised
constructive  total loss or requisition of any Rig, all insurance payments
therefor shall be  paid to the Security Trustee and  applied to reduce the
Total Commitment in accordance  with and subject to  the terms of  Section
3.03(c)  and/or (d) of the Credit Agreement.   The Owner shall not declare
or agree with underwriters that any Rig is  a constructive or compromised,<PAGE>


agreed  or  arranged constructive  total  loss without  the  prior written
consent of the Security Trustee.

    In the event  of an actual  constructive total  loss of  any Rig,  the
Security  Trustee shall retain out  of the insurance  payments received on
account of such loss and  held by the Security Trustee in  accordance with
the Credit Agreement, any sum or sums that shall be or become owing to the
Security Trustee under  this Mortgage for the cost,  if any, of collecting
the  insurance, which sum  or sums shall  become the sole  property of the
Security  Trustee,  and  pay the  balance  to  the  Banks for  application
pursuant  to and  subject  to Section  3.03(c) and/or  (d)  of the  Credit
Agreement.<PAGE>


                                                             ANNEX II
                                                                 to       
                                                        Security Agreement
                                                        ------------------



                          CONSENT AND AGREEMENT


The undersigned, [                ],  a party to the Contract to which the
Notice  of  Assignment  delivered  pursuant  to  the  foregoing   Security
Agreement  refers (terms defined in the Security Agreement are used herein
with the same  meaning), hereby  acknowledges notice of  and consents  and
agrees to the foregoing collateral assignment  of insurance and to all  of
the terms thereof  and agrees that  it will, subject  to the loss  payable
clauses,  make payment directly to the account advised by Christiania Bank
og Kreditkasse, New York Branch (the "Assignee"), of all moneys due and to
become due from it under the Contract until receipt of written notice from
the Assignee  that all obligations to  the Banks secured  by said Security
Agreement have been paid in full.

This  Consent  and  Agreement  shall  be  governed  by  and  construed  in
accordance  with  the internal  laws  of the  State  of New  York, without
reference to principles of conflicts of law.

Dated: ___________, ____

                                      [                ]


                                      By _________________<PAGE>


                                                              EXHIBIT G-2
                                                              -----------




                   FORM OF BORROWER B SECURITY AGREEMENT
                   -------------------------------------

        SECURITY AGREEMENT (as amended, modified or supplemented from time
to time, this  "Agreement"), dated as of February 27,  1997, between ENSCO
Offshore   U.K.  Limited   (the  "Assignor")   and  Christiania   Bank  og
Kreditkasse,  New  York  Branch,  as  Collateral  Agent  (the  "Collateral
Agent"),  for the benefit of the Banks and the Administrative Agent under,
and  as defined  in, the  Credit Agreement  hereinafter referred  to (such
Banks  and  Administrative  Agent  are  hereinafter  called  the  "Secured
Creditors").  Except as  otherwise defined herein, capitalized terms  used
herein and  defined in the  Credit Agreement  shall be used  herein as  so
defined.


                           W I T N E S S E T H :


        WHEREAS, ENSCO  International Incorporated, ENSCO Delaware,  Inc.,
ENSCO Offshore  Company, the Assignor,  Dual Holding Company,  the lending
institutions  from  time  to  time  party  thereto,  Christiania  Bank  og
Kreditkasse, New York Branch and Den norske Bank ASA, New  York Branch, as
co-agents  and  Christiania  Bank  og  Kreditkasse,  New  York Branch,  as
administrative agent  and  security trustee  have  entered into  a  Credit
Agreement, dated as  of February  27, 1997 (as  modified, supplemented  or
amended from time to  time, the "Credit Agreement"), providing  for, among
other  things,  the  making  of  Tranche   B  Loans  to  the  Assignor  as
contemplated therein;

        WHEREAS, the Assignor  desires to incur Tranche B Loans  under the
Credit Agreement;

        WHEREAS,  the Assignor,  a company  formed under  the laws  of the
United Kingdom, is the sole owner of the United States registered offshore
drilling  rigs  ENSCO 80  (official no.  724944),  ENSCO 85  (official no.
724945)  and ENSCO  92 (official  no. 724946)  (all of  the aforementioned
vessels being herein collectively referred to as the "Rigs");

        WHEREAS, it is a  condition precedent to  the making of Loans  and
the issuance  of Letters of Credit  under the Credit Agreement  and to the
occurrence of the Effective Date that the Assignor shall have executed and
delivered to the Collateral Agent this Agreement; and

        WHEREAS, the Assignor desires to execute this Agreement to satisfy
the condition described in the preceding paragraph;

        NOW, THEREFORE, in  consideration of the benefits accruing  to the
Assignor, the  receipt and sufficiency  of which are  hereby acknowledged,
the Assignor hereby makes the following  representations and warranties to
the Collateral Agent and  hereby covenants and agrees with  the Collateral
Agent as follows:<PAGE>


        SECTION 1.  OBLIGATIONS SECURED.

        1.01   Obligations  Secured.    The  Agreement  is  made  for  the
benefit of the Secured Creditors to secure (i) the full and prompt payment
when  due of  (x) the  principal of  and interest on  the Tranche  B Notes
issued,  and Tranche B Loans made, under  the Credit Agreement and (y) all
other  obligations   and  indebtedness  (including,   without  limitation,
indemnities, Fees and  interest thereon)  of the Assignor  to the  Secured
Creditors, whether now existing  or hereafter incurred under,  arising out
of  or in  connection  with  the Credit  Agreement  and  the other  Credit
Documents and the due performance and compliance by  the Assignor with all
of  the terms, conditions and agreements contained in the Credit Agreement
and the  other Credit  Documents; (ii)  any and all  sums advanced  by the
Collateral Agent  in  order to  preserve  the Collateral  (as  hereinafter
defined) or preserve its security interest in the Collateral; (iii) in the
event  of  any  proceeding  for  the  collection  or  enforcement  of  any
indebtedness, obligations, or  liabilities of the Assignor  referred to in
clause (i) above,  after an Event  of Default shall  have occurred and  be
continuing, the reasonable expenses of the Collateral Agent  of re-taking,
holding, preparing for sale or lease, selling or otherwise disposing of or
realizing on the Collateral, or of any exercise by the Collateral Agent of
its rights hereunder, together with  reasonable attorneys' fees of counsel
to the  Collateral Agent and court costs;  and (iv) all reasonable amounts
paid by  any Indemnitee  as  to which  such Indemnitee  has  the right  to
reimbursement under  Section 11 of  this Agreement (all  such obligations,
liabilities, sums and  expenses referred  to in clauses  (i) through  (iv)
above  being  collectively  referred  to  as   the  "Obligations").    The
"Obligations" shall  include extensions of  credit of the  types described
above, whether outstanding on the date of this Agreement or extended  from
time to time after the date of this Agreement.


        SECTION 2.  ASSIGNMENT OF EARNINGS.

        2.01   The  Assignor,  as  legal  and  beneficial   owner,  hereby
assigns, transfers and sets over unto the Collateral Agent for the benefit
of  the Secured  Creditors and  their successors  and assigns,  and hereby
grants the Collateral  Agent a  security interest  in, all  of its  right,
title and  interest in  and  to:   (i) all  day  rate payments,  freights,
charter hire and  any other  moneys earned  and to  be earned,  due or  to
become due or paid or payable to,  or for the account of the Assignor,  of
whatsoever nature, arising out of any charter parties, drilling  contracts
or as  a result of the  ownership, chartering and other  operations of any
kind whatsoever by the Assignor or its agents of the Rigs, (ii) all moneys
and claims for moneys due and to become due to the Assignor and all claims
for  damages arising out  of the breach  of any and  all present or future
drilling  contracts,  charter  parties,  and  operations  of  every   kind
whatsoever  of the  Rigs and in  and to any  and all claims  and causes of
action  for money,  loss  or damages  that  may accrue  or  belong to  the
Assignor,  their successors,  or  assigns, arising  out of  or in  any way
connected  with  any and  all  present and  future  requisitions, drilling
contracts, charter parties, and other  operations of the Rigs of  any kind
whatsoever, (iii) all moneys and  claims for moneys due and to  become due
to the Assignor, and  all claims for damages in  respect of the actual  or
constructive total loss of or requisition or use of or title to any of the
Rigs subject  to Section  3.03(c)  of the  Credit Agreement  and (iv)  any<PAGE>


proceeds  of   any  of   the   foregoing  (collectively,   the   "Earnings
Collateral").

        2.02   Subject  to  the  provisions   of  Section  2.03   of  this
Agreement, the  Collateral  Agent's  security  interest  in  all  accounts
receivable  included  in,  or  representing  proceeds  of,  the   Earnings
Collateral shall automatically be and be deemed released, without the need
for any action on  the part of the Collateral Agent, from  time to time as
such  accounts receivable arise or  are created, or  as funds representing
payments  of  such  Collateral (or  part  thereof)  are  collected by  the
Assignor. 

        2.03   Upon  the occurrence  of an  Event of  Default  pursuant to
Section  9.05 of the Credit Agreement (a "Bankruptcy Default") and without
any further act or notice, or upon the giving by the Collateral Agent of a
written  notice (a "Release Termination Notice") to the Assignor after the
occurrence  and during  the  continuance  of  an  Event  of  Default,  the
automatic  release set  forth  in Section  2.02  of this  Agreement  shall
terminate.

        2.04   Upon the  occurrence of an  Event of  Default, the Assignor
hereby represents, warrants and undertakes that:

               (a)  notice of  this Agreement in the  form attached hereto
                    as  Exhibit  1  will  be  promptly  delivered  to  any
                    charterers of the Rigs; and

               (b)  it  will  use  its good  faith  efforts  to cause  any
                    charterer to  execute a Consent and  Agreement to this
                    Agreement in the form attached hereto as Exhibit 2 and
                    deliver such Consent  and Agreement to the  Collateral
                    Agent.

        2.05   Upon the occurrence  of an Event of Default, the Collateral
Agent shall be entitled to receive all payments of Earnings  Collateral of
the Rigs  payable to the Assignor and assigned hereby.  Such payment shall
be made to  the account of  the Collateral Agent,  and the Assignor  shall
cause all sums so  payable to the Assignor and assigned  hereby to be paid
directly into such account.

        2.06   It  is hereby  expressly  agreed that,  anything  contained
herein to the contrary notwithstanding,  the Assignor shall remain  liable
under all charters  and contracts  pertaining to the  Rigs to perform  the
obligations  assumed by it thereunder, and the Collateral Agent shall have
no obligation or liability of any nature whatsoever under any such charter
or contract by reason of, or arising out of, this Agreement, nor shall the
Collateral Agent  be required to assume  or be obligated in  any manner to
perform or fulfill any obligation of the Assignor under or pursuant to any
such charter or  contract or to make any payment or make any inquiry as to
the nature or sufficiency of any payment received by the Collateral Agent,
or,  unless and until indemnified to  its satisfaction, to present or file
any claim or to take any other action to collect or enforce the payment of
any amounts  which may  have been assigned  to it  or to  which it may  be
entitled hereunder or pursuant hereto at any time or times.<PAGE>


        2.07   The Assignor shall  promptly notify the Collateral Agent in
writing of the commencement and termination of any period during which any
of the Rigs owned by it are requisitioned.

        2.08   Upon the occurrence of an Event of Default,  the Collateral
Agent  has  the right  to give  notice of  this  Agreement to  all account
debtors.

        2.09   The  Collateral Agent  shall not  be required  to make  any
inquiry as to  the nature or  sufficiency of any  payment received by  the
Collateral Agent, or, unless  and until indemnified  to  its satisfaction,
to present or file any  claim, or to take  any other action to collect  or
enforce  the payment of any amounts which may  have been assigned to it or
to which it  may be entitled hereunder  or pursuant hereto at any  time or
times.


        SECTION 3.  ASSIGNMENT OF INSURANCE

        3.01   The Assignor  hereby sells, assigns,  transfers, sets  over
and grants a  security interest  unto the Collateral  Agent as  collateral
security  for  the Obligations,  in  and  to  the  following (all  of  the
following, collectively, the "Insurance Collateral" and, together with the
Earnings Collateral, the "Collateral"):  (i) all policies and contracts of
insurances in respect of the Rigs whether now or hereafter  to be effected
and all renewals of or replacements for the same, (ii) all claims, returns
of premium and  other moneys and claims for moneys due  and to be come due
under said insurances  or in respect of  said insurances, (iii) all  other
rights of  the Assignor under  or in respect  of said insurances  (iv) any
proceeds of any of the foregoing. 

        3.02   It  is expressly agreed  that anything  herein contained to
the contrary notwithstanding, the Assignor shall remain  liable under said
insurances to perform all of the obligations assumed  by it thereunder and
the  Collateral Agent  shall have  no obligation or  liability (including,
without  limitation,  any obligation  or  liability  with respect  to  the
payment of premiums, calls or assessments) under said insurances by reason
of  or  arising  out  of  this instrument  of  assignment  nor  shall  the
Collateral Agent be  required or  obligated in  any manner  to perform  or
fulfill  any obligations  of  the  Assignor  under  or  pursuant  to  said
insurances or to make any payment or to make any inquiry as to  the nature
or sufficiency  of any payment  received by it  or to present  or file any
claim,  or to take any  other action to collect  or enforce the payment of
any amounts which or  may have been assigned to  it or to which it  may be
entitled hereunder at any time or times.

        3.03   The Assignor hereby  covenants and agrees to deliver notice
of this Assignment, in the form of Annex I hereto, to all underwriters and
that  where the consent of any underwriter  is required pursuant to any of
the  insurances assigned  hereby, the  Assignor shall  use its  good faith
efforts to  obtain  such consent  in  the form  of  Annex II  hereto,  and
evidence thereof shall  be given to the Collateral  Agent, and there shall
be  duly endorsed upon all  slips, cover notes,  policies, certificates of
entry or other instruments issued  or to be issued in connection  with the
insurances  assigned hereby such clauses as to additional named assured or
loss payees as the Collateral Agent may reasonably request.  In all cases,
unless  otherwise agreed in writing  by the Collateral  Agent, such slips,<PAGE>


cover notes, notices,  certificates of  entry or  other instruments  shall
show  the Collateral Agent as  additional named assured  and shall provide
that there will be no recourse against the Collateral Agent for payment of
premiums, calls or assessments.

        3.04   In the  event that the  Insurance Collateral or any portion
thereof is sold in connection with a sale permitted by Section 8.02 of the
Credit  Agreement or  by  the  proviso  contained  in  the  definition  of
"Collateral Disposition" in the Credit  Agreement or is otherwise released
at the direction of the  Required Banks (or all  the Banks, to the  extent
required  by Section 12.12 of the Credit Agreement), the Collateral Agent,
at the request and expense of the Assignor, will duly assign, transfer and
deliver  to the Assignor (without  recourse and without any representation
or warranty) such of  the Insurance Collateral (and releases  therefor) as
is then being  (or has  been) so sold  or released  and as may  be in  the
possession of the Collateral  Agent and has not theretofore  been released
pursuant to  this Agreement.   At any time  the Assignor desires  that the
Insurance Collateral or a portion thereof be released as  provided in this
section,  the Assignor shall deliver to the Collateral Agent a certificate
signed  by  an Authorized  Officer (as  defined  in the  Credit Agreement)
stating that the release of the Insurance Collateral or portion thereof is
permitted pursuant to this section.

        3.05   The  Assignor  hereby authorizes  the  Collateral Agent  to
execute and file Financing Statements (Form UCC-1) (or foreign  equivalent
thereof, including the Floating Charge) and amendments thereto as provided
in Article 9 of the Uniform Commercial Code.


        SECTION 4.  FURTHER ASSURANCES.

        The Assignor will, at  any time and from time to time,  at its own
expense, promptly execute and deliver all further agreements,  instruments
and  other documents and take all further  action that may be necessary or
that the  Collateral Agent may reasonably request  in order to perfect and
protect  the security interest purported to be created hereby or otherwise
to  enable the  Collateral Agent  to exercise  and enforce its  rights and
remedies hereunder.


        SECTION 5.  TRANSFERS AND OTHER LIENS.

        The  Assignor  will  not,  without  the  written  consent  of  the
Collateral Agent, (i)  sell, assign (by operation of law  or otherwise) or
otherwise  dispose  of  any interest  in  the  Collateral  (other than  as
expressly permitted under this  Agreement and the other  Credit Documents)
or (ii)  create or suffer  to exist any  Lien, security interest  or other
charge or encumbrance  upon or with respect  to any Collateral  except for
Permitted Liens and the security interest purported to be created hereby.


        SECTION 6.  ATTORNEY-IN-FACT.

        The  Assignor   hereby  appoints  the  Collateral   Agent  as  the
Assignor's attorney-in-fact, with full authority only after the occurrence
of and during  the continuance of an  Event of Default,  in the place  and
stead of the Assignor and in the  name of the Assignor or otherwise,  from<PAGE>


time  to  time  in  the  Collateral  Agent's  discretion  to  execute  any
instrument and to take any other  action which the Collateral Agent may in
good faith reasonably deem  necessary or advisable to accomplish  the pur-
poses of this  Agreement or to facilitate the assignment or other transfer
by the Collateral Agent of any  or all of its rights hereunder, including,
without  limitation, (i) to  receive, endorse and  collect all instruments
made  payable to  the Assignor  and representing  any interest  payment or
other distribution in respect of the Collateral and to give full discharge
for  the same and (ii) to execute  and deliver any and all instruments and
other documents that the  Collateral Agent may request in  connection with
the  exercise  by  the Collateral  Agent  of  any  or  all of  its  rights
hereunder.  Such  appointment of the Collateral Agent  as attorney-in-fact
is irrevocable and coupled with an interest.


        SECTION 7.  PERFORMANCE BY THE COLLATERAL AGENT.

        If  the Assignor  fails  to  perform any  agreement  or obligation
contained  herein,  the  Collateral  Agent  itself may  perform  or  cause
performance  of such agreement or obligation,  and the reasonable expenses
of  the Collateral Agent incurred in connection therewith shall be payable
to the Collateral Agent by the Assignor.


        SECTION 8.  RESPONSIBILITY OF THE COLLATERAL AGENT.

        Other  than the  exercise of  reasonable care  to assure  the safe
custody of the Collateral while held hereunder, the Collateral Agent shall
have no duty or liability to preserve rights pertaining  thereto and shall
be  relieved of all responsibility for the Collateral upon surrendering it
or tendering surrender of it to the Assignor.  The  Collateral Agent shall
be deemed to  have exercised  reasonable care in  the custody and  preser-
vation of the  Collateral in its possession if the  Collateral is accorded
treatment substantially  equal to that which the  Collateral Agent accords
its  own  property.   Without limiting  the  generality of  the foregoing,
neither the Collateral Agent nor any of its directors, officers, agents or
employees shall  be liable (i) for  any failure to invest  or reinvest any
cash  in accordance  herewith in  the absence  of its  or their  own gross
negligence or willful misconduct  or for any losses incurred by  reason of
investments made by the Collateral Agent pursuant to Section  2.03 or (ii)
for any action taken or omitted to be taken by the Collateral Agent (x) in
good faith  in accordance with the  advice of counsel with  respect to any
question  as to the construction of any  provision hereof or any action to
be taken by  the Collateral Agent hereunder or (y)  in accordance with any
instructions or other notice  which the Collateral Agent believes  in good
faith  to be  properly given by  the Assignor  hereunder.   This Section 8
shall have no application to Christiania Bank og Kreditkasse except in its
capacity as Collateral Agent.


        SECTION 9.  APPLICATION OF PROCEEDS.

        (a)   Subject to the  applicability of Section 10  of the Bahamian
Mortgages and the provisions  of Section 3.03(c) of the  Credit Agreement,
all  moneys collected  by  the Collateral  Agent upon  any  sale or  other
disposition  of any Collateral, together with all other moneys received by<PAGE>


the  Collateral Agent  hereunder  or  under  any  of  the  other  Security
Documents, shall be applied as follows:

          (i)  first,  to the payment of all amounts  owing the Collateral
    Agent of the type described in clauses (ii) and (iii) of Section 1.01;

         (ii)  second, to the extent  moneys remain after  the application
    pursuant  to  the  preceding clause  (i),  an  amount  equal to    the
    outstanding  Obligations shall  be paid  to  the Secured  Creditors as
    provided in  Section 9(c),  with each  Secured  Creditor receiving  an
    amount equal  to such Obligations held  by it or, if  the proceeds are
    insufficient to pay in full  all such Obligations, its Pro  Rata Share
    (as defined below) of the amount remaining to be distributed; and

        (iii)  third,  to the extent  moneys remain  after the application
    pursuant  to the  preceding clauses  (i) and  (ii), and  following the
    termination of this Agreement pursuant to Section 12, any surplus then
    remaining  shall be  paid to  the Assignor,  subject, however,  to the
    rights of the holder of any then existing Lien of which the Collateral
    Agent has actual notice (without investigation).

        (b)  For  purposes of this Agreement  "Pro Rata Share" shall mean,
when  calculating a  Secured  Creditor's portion  of  any distribution  or
amount  in  respect  of  any  Obligations,  the  amount  (expressed  as  a
percentage) equal to a fraction the numerator of which is  the then unpaid
amount of such  Obligations owing to or held by  such Secured Creditor and
the  denominator of  which  is the  then outstanding  amount  of all  such
Obligations.    For purposes  of determining  the  amount payable  to each
Secured Creditor, the Collateral  Agent shall be entitled to  request each
Secured Creditor  to  furnish it  with  written notice  of  the amount  of
Obligations then owed to it and shall be entitled to rely upon the amounts
stated therein in making such distributions.

        (c)    All  payments  required  to be  made  to  Secured Creditors
hereunder shall be  made to the Collateral Agent at  the UK Payment Office
for the account of the Secured Creditors.

        (d)  For purposes of applying payments received in accordance with
this Section  9, the Collateral Agent  shall be entitled to  rely upon (i)
the Administrative Agent under  the Credit Agreement and (ii)  the Secured
Creditors for  a determination  (which the  Administrative Agent  and each
Secured  Creditor, by their acceptance  of the benefits  of this Agreement
shall be obligated to provide upon request of the Collateral Agent) of the
outstanding  Obligations owed  to the  Secured Creditors.   Unless  it has
actual  knowledge (including  by  way of  written  notice from  a  Secured
Creditor)  to  the contrary,  the  Administrative Agent  under  the Credit
Agreement, in  furnishing information pursuant to  the preceding sentence,
and the Collateral Agent, in acting hereunder, shall be entitled to assume
that  (x)  no obligations  other  than principal,  interest  and regularly
accruing fees are owing to any Secured Creditor.


        SECTION  10.  REPRESENTATIONS,  WARRANTIES AND  COVENANTS  OF  THE
ASSIGNOR.

        10.01  The  Assignor hereby  represents  and  warrants it  has not
assigned  or pledged, and hereby covenants that, without the prior written<PAGE>


consent thereof of the Collateral  Agent, so long as this Agreement  shall
remain in  effect, it will not assign  or pledge the whole  or any part of
the right,  title and interest  hereby assigned to  anyone other than  the
Collateral Agent, its successors or assigns, and that it will  not take or
omit to take any action, the taking  or omission of which might result  in
an alteration or impairment of the Collateral or this Agreement, or of any
of the rights created in the Collateral by this Agreement.

        10.02  As  of  the  Restatement  Effective  Date,  this  Agreement
creates a valid and enforceable perfected security interest in and Lien on
all  of the Collateral in favor of the Collateral Agent for the benefit of
the Banks, and no filings  or recordings required in connection with  this
Agreement  which shall  have been  made prior  to (or  are the  subject of
arrangements, satisfactory to  the Administrative Agent, for  filing on or
promptly after the date of) the execution and delivery of this Agreement. 


        SECTION 11.  INDEMNITY.

        11.01  The Assignor  hereby covenants  with the  Assignee for  the
benefit of  the Collateral  Agent and the  Banks that  it will pay  to the
Assignee  on  demand  all moneys  whatsoever  which  the  Assignee or  the
Collateral Agent or the Banks shall or may reasonably expend, be put to or
become  liable for, in or about the protection, maintenance or enforcement
of the security created  by this Agreement or in or  about the exercise by
the Assignee  or the Collateral Agent and  the Banks of any  of the powers
vested  in it  or  them under  the Mortgages  or  hereunder together  with
interest thereon  at the rate provided  for in Section 1.08  of the Credit
Agreement from the date when such  moneys were expended by the Assignee or
such Bank  until the date of  actual receipt, whether before  or after any
relevant judgment.

        11.02  Any  amounts  paid  by  any  Indemnitee as  to  which  such
Indemnitee  has the  right to  reimbursement shall  constitute Obligations
secured  by the  Collateral.   The indemnity  obligations of  the Assignor
contained in  this Section  11 shall  continue  in full  force and  effect
notwithstanding the full payment of all  the Tranche B Notes issued  under
the  Credit Agreement and all of the other Obligations and notwithstanding
the discharge thereof.


        SECTION 12.  TERMINATION; RELEASE; PARTIAL RELEASE.

        (a)    On  the  date  on  which  the  Credit  Agreement  has  been
terminated, when no Tranche B Note remains outstanding and all Obligations
shall  have been irrevocably paid in full, this Agreement shall terminate,
and the Collateral Agent, at the request and expense of the Assignor, will
execute and deliver  to the  Assignor a proper  instrument or  instruments
acknowledging the satisfaction and termination of this Agreement, and will
duly  assign, transfer and deliver  to the Assignor  (without recourse and
without  any representation  or warranty)  such of  the Collateral  as may
remain in the possession of the Collateral Agent together with any  moneys
at the time held by the Collateral Agent hereunder.


        SECTION 13.  NOTICES, ETC.<PAGE>


        Except  as otherwise  expressly provided  herein, all  notices and
other communications provided for hereunder shall be delivered  and become
effective in accordance with Section 12.03 of the Credit Agreement.


        SECTION 14.  MISCELLANEOUS.

        14.01   This Agreement shall be binding upon  the Assignor and its
successors and assigns (although the Assignor may not assign its rights or
obligations under this Agreement) and shall inure to the benefit of and be
enforceable by the  Collateral Agent and its successors and  assigns.  The
headings  in this Agreement  are for purposes of  reference only and shall
not limit or define the meaning hereof.  THIS AGREEMENT AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH
AND BE GOVERNED BY THE LAW OF THE  STATE OF NEW YORK.  This Agreement  may
be  executed in  any number  of counterparts,  each of  which shall  be an
original,  but all  of  which  shall  constitute  one  instrument.    This
Agreement shall  become effective on the date on which each of the parties
shall have  executed and delivered a  copy hereof.  In the  event that any
provision of this  Agreement shall at any time for  any reason be declared
or decided  to be invalid,  void or  otherwise inoperative by  a court  of
competent jurisdiction, such  declaration or decision shall not affect the
validity  of any other  provision or provisions of  this Agreement, or the
validity of this Agreement as a whole.  In the event that by reason of any
law or regulation in force or to become in force, or by reason of a ruling
of any court of competent jurisdiction, or by any other reason whatsoever,
this Agreement is rendered either wholly or partly defective, the Assignor
shall  furnish  the Collateral  Agent  with an  alternative  assignment or
security and do all such other acts as are reasonably required in order to
ensure and give effect to the full intent of this Agreement.

        14.02  It is declared and agreed that the security created by this
Agreement shall be  held by the Collateral Agent as  a continuing security
for the payment of all moneys which may at  any time and from time to time
be or  become payable by the  Assignor under the Credit  Agreement and the
other Credit  Documents and  that the  security  so created  shall not  be
satisfied by all intermediate payment or  satisfaction of any part of  the
amount  hereby secured  and  that  the security  so  created  shall be  in
addition  to and  shall not in  any way  be prejudiced or  affected by any
collateral or other security now or hereafter held by the Collateral Agent
for all or any part of the moneys hereby secured.

        14.03  Each and every right, power  and remedy given herein or  in
the Credit  Agreement or in the  other Credit Documents to  the Collateral
Agent shall be cumulative and  shall be in addition to every  other right,
power and remedy of the Collateral Agent now or hereafter existing at law,
in  equity or  by statute,  and each  and every  right, power  and remedy,
whether herein given  or otherwise existing, may be exercised from time to
time, in whole or in part, and as often and in such order as may be deemed
expedient by the Collateral Agent, and the exercise or the commencement of
the exercise of any right, power or remedy shall not be  construed to be a
waiver  of the right to exercise at the  same time or thereafter any other
right, power or remedy.  No  delay or omission by the Collateral Agent  in
the exercise of any right or power in the pursuance of any remedy accruing
upon any  breach or default by  the Assignor shall impair  any such right,
power or remedy or be construed to be a waiver of any such right, power or
remedy or to be an  acquiescence therein; nor shall the acceptance  by the<PAGE>


Collateral Agent of any security or of any payment of or on account of any
of the amounts due from the  Assignor to the Collateral Agent and maturing
after  any breach  or default  or of any  payment on  account of  any past
breach  or default  be  construed to  be  a waiver  of any  right  to take
advantage of any future breach or default or of any past breach or default
not completely cured thereby.


        SECTION 15.  WAIVER; AMENDMENT.

        None of the terms and conditions of this Agreement may be changed,
waived, modified or varied in any manner whatsoever unless in writing duly
signed by  the Assignor  and  the Collateral  Agent (with  the consent  of
either the Required Banks (as defined  in the Credit Agreement) or, to the
extent required  by Section  12.12 of  the Credit  Agreement,  all of  the
Banks).


        SECTION 16.  SECURED CREDITOR ACKNOWLEDGMENT.

        By accepting the benefits of this Agreement, each Secured Creditor
acknowledges  and agrees that the rights and obligations of the Collateral
Agent shall be as set forth in Section 12 of the Credit Agreement.<PAGE>



        IN WITNESS WHEREOF,  the Assignor  and the  Collateral Agent  have
caused this  Agreement to be executed by  their duly elected officers duly
authorized as of the date first above written.


ADDRESS:                              ENSCO OFFSHORE U.K. LIMITED

1445 Ross Avenue
Suite 2700
Dallas, Texas  77202-2792             By________________________________
Attention:  Chief Financial Officer     Title:  
Tel: (214) 922-1500
Fax: (214) 855-0080
               

11 West 42nd Street                   CHRISTIANIA BANK OG KREDITKASSE,
New York, New York  10036             NEW YORK BRANCH, as Collateral Agent
Attention: Hans Chr. Kjelsrud   
Tel: (212) 827-4814
Fax: (212) 827-4888
                                      By________________________________
                                        Title:  


                                      By________________________________
                                        Title:  <PAGE>




                                                             EXHIBIT 1
                                                                 to       
                                                        Security Agreement
                                                        ------------------



                            NOTICE OF ASSIGNMENT


TO:

TAKE NOTICE THAT:

    By a Security Agreement, dated the __ day of February, 1997 made by us
    to  Christiania Bank  og Kreditkasse,  as agent (the  "Assignee"), and
    relating to  the Bahamian flag  vessel ________ (the  "Rig"), we  have
    assigned to the Assignee as from the date hereof  all our right, title
    and interest in and to  any moneys whatsoever payable to us under that
    certain  [Charter Contract] dated as of  ________, ____ as at any time
    amended  (the  "Contract")  between  yourselves  and  the  undersigned
    concerning the  Rig, as  the Contract  may at  any time be  amended or
    supplemented, and all other rights and benefits whatsoever accruing to
    us which  arise or may arise  from the operation of  the Rig under the
    Contract  including (but  without prejudice  to the generality  of the
    foregoing) all  claims for damages for  any breach of  the Contract by
    you.

DATED THIS ___ day of ___________, ____.



                                      [                   ]



                                      By ___________________
                                        Its:<PAGE>




                                                             EXHIBIT 2
                                                                 to       
                                                        Security Agreement
                                                        ------------------



                           CONSENT AND AGREEMENT


The undersigned, [                ],  a party to the Contract to which the
Notice  of  Assignment  delivered  pursuant  to  the  foregoing   Security
Agreement  refers (terms defined in the Security Agreement are used herein
with the  same meaning), in consideration of the sum of one dollar ($1.00)
lawful  money of the United States of  America and other good and valuable
consideration, paid  by Christiania  Bank og  Kreditkasse,  as agent  (the
"Assignee"),  the   receipt  of  which  is   hereby  acknowledged,  hereby
acknowledges notice of and consents and agrees to the foregoing collateral
assignment of  earnings and to all  of the terms thereof  and agrees that:
(1) it  will make payment directly to the account advised by the Assignee,
of  all moneys  due and  to become  due from  it under the  Contract until
receipt  of written notice  from the Assignee that  all obligations to the
Banks secured by said Security  Agreement have been paid in full;  and (2)
any  such payment  shall be  final and  the undersigned  will not  seek to
recover from the Assignee for any reason whatsoever any moneys paid by the
undersigned  to the Assignee by virtue of the foregoing Security Agreement
and this Consent and Agreement  but this shall not prevent the  set off or
credit against  or deduction from  any moneys payable  to the  Assignee by
virtue of said  Security Agreement of amounts owing  to the undersigned by
the Assignor under the Contract.

[           ], as charterer,  confirms and agrees that the Contract is  in
full force and effect and is enforceable in accordance with  its terms and
the Assignor is not in default thereunder.

This  Consent  and  Agreement  shall  be  governed  by  and  construed  in
accordance  with the  internal  laws of  the State  of  New York,  without
reference to principles of conflicts of law.

Dated: ___________, ____


                                      [                ]


                                      By _________________<PAGE>




                                                              ANNEX I
                                                                 to       
                                                        Security Agreement
                                                        ------------------




                             NOTICE OF ASSIGNMENT


    _____________________________________  (the "Owner"), the owner of the
Bahamian flag  offshore drilling  rig  _____________ (the  "Rig"),  HEREBY
GIVES NOTICE that by a Security Agreement dated February __, 1997 and made
between the Owner and Christiania Bank og Kreditkasse, New York Branch, as
Collateral  Agent (the "Assignee") for itself and certain other Banks, the
Owner  assigned to  the  Assignee all  of  the  Owner's right,  title  and
interest in and to all insurances and the benefit of all insurances now or
hereafter taken out in respect of the  Rig.  This Notice of Assignment and
loss payable clauses substantially similar to those set forth below are to
be  indorsed on  all policies  and certificates  of entry  evidencing such
insurance.

                                      [OWNER]



                                      BY_________________________
                                        Its:

Loss Payable Clauses:
- --------------------
    All amounts of whatsoever nature payable under any insurance shall  be
payable  to the  Security Trustee  for distribution  first to  itself, the
Secured Creditors, the  Co-Agents and thereafter to the Owner or others as
their interests may appear.  Nevertheless, until otherwise required by the
Security  Trustee by notice to the underwriters, (i) amounts payable under
any insurance  on the Rigs  with respect to  the protection  and indemnity
risks shall be paid  directly to the Owner  to reimburse it for  any loss,
damage or expense  incurred by it and covered by such  insurance or to the
person to whom any  liability covered by such insurance has been incurred,
and (ii)  amounts payable  under any  insurance with  respect to  the Rigs
involving  any  damage  to   any  Rigs  not  constituting  an   actual  or
constructive  total loss, shall be  paid by the  underwriters directly for
the repair, salvage or other charges  involved or, if the Owner shall have
first  fully  repaired the  damage or  paid all  of  the salvage  or other
charges shall be paid  to the Owner as reimbursement  therefore, PROVIDED,
no amounts in  excess of US$2,000,000  shall be  paid from any  insurances
without the prior written consent of the Security Trustee.

    In the event of an  actual or constructive total loss or a compromised
constructive  total loss or requisition of any Rig, all insurance payments
therefor  shall be paid to the Security  Trustee and applied to reduce the
Total  Commitment in accordance  with and subject to  the terms of Section
3.03(c) and/or (d) of the  Credit Agreement.  The Owner shall  not declare<PAGE>


or agree with underwriters that any Rig is  a constructive or compromised,
agreed  or arranged  constructive  total loss  without  the prior  written
consent of the Security Trustee.

    In the  event of  an actual  constructive total  loss of any  Rig, the
Security  Trustee shall retain out  of the insurance  payments received on
account  of such loss and held by  the Security Trustee in accordance with
the Credit Agreement, any sum or sums that shall be or become owing to the
Security Trustee under this Mortgage  for the cost, if any,  of collecting
the insurance, which  sum or sums  shall become the  sole property of  the
Security  Trustee,  and  pay the  balance  to  the  Banks for  application
pursuant to  and  subject to  Section  3.03(c) and/or  (d) of  the  Credit
Agreement.
 <PAGE>



                                                              ANNEX II
                                                                 to       
                                                        Security Agreement
                                                        ------------------



                          CONSENT AND AGREEMENT


The undersigned, [                ],  a party to the Contract to which the
Notice  of  Assignment  delivered  pursuant  to  the  foregoing   Security
Agreement  refers (terms defined in the Security Agreement are used herein
with the same  meaning), hereby  acknowledges notice of  and consents  and
agrees to the  foregoing collateral assignment of insurance and  to all of
the terms  thereof and agrees  that it will,  subject to the  loss payable
clauses make payment directly  to the account advised by  Christiania Bank
og Kreditkasse, New York Branch (the "Assignee"), of all moneys due and to
become due from it under the Contract until receipt of written notice from
the Assignee that all  obligations to the Banks  secured by said  Security
Agreement have been paid in full.

This  Consent  and  Agreement  shall  be  governed  by  and  construed  in
accordance  with the  internal  laws of  the  State of  New  York, without
reference to principles of conflicts of law.

Dated: _______________, ____

                                      [                ]


                                      By _____________________<PAGE>



                                                               EXHIBIT G-3
                                                               -----------




                     FORM OF BORROWER C AND SUBSIDIARY
                       GUARANTOR SECURITY AGREEMENT
                     ---------------------------------


        SECURITY AGREEMENT (as amended, modified or supplemented from time
to  time, this  "Agreement"), dated  as of  February 27, 1997,  among Dual
Holding Company ("Borrower C"), ENSCO Offshore Company II (the "Subsidiary
Guarantor" and, together with Borrower C, the "Assignors") and Christiania
Bank og Kreditkasse, New York Branch, as Collateral Agent (the "Collateral
Agent"), for  the benefit of the  Banks, the Letter of  Credit Issuer, and
the  Administrative Agent under, and  as defined in,  the Credit Agreement
hereinafter   referred  to  (such  Banks,  Letter  of  Credit  Issuer  and
Administrative  Agent are  hereinafter  called  the "Secured  Creditors").
Except  as otherwise  defined herein,  capitalized terms  used herein  and
defined in the Credit Agreement shall be used herein as so defined.


                           W I T N E S S E T H :


        WHEREAS, ENSCO International Incorporated,  ENSCO Delaware,  Inc.,
ENSCO  Offshore  Company, ENSCO  Offshore  U.K. Limited,  Borrower  C, the
lending  institutions from time to time party thereto, Christiania Bank og
Kreditkasse, New  York Branch and Den norske Bank ASA, New York Branch, as
co-agents  and  Christiania  Bank  og  Kreditkasse,  New  York  Branch, as
administrative  agent and  security  trustee have  entered  into a  Credit
Agreement, dated as  of February  27, 1997 (as  modified, supplemented  or
amended from time to  time, the "Credit Agreement"), providing  for, among
other  things, the  making of  Tranche C  Loans and  the issuance  of, and
participation in, Tranche C Letters of Credit as contemplated therein;

        WHEREAS,  the  Subsidiary Guarantor  has  executed  the Subsidiary
Guaranty  and  thereby  unconditionally  guaranteed  the  obligations   of
Borrower C under the Credit agreement and the other Credit Documents.

        WHEREAS, the Subsidiary Guarantor, a Delaware corporation,  is the
sole  owner of  the Liberian  registered offshore  drilling rigs  ENSCO 50
(f/k/a  Dual 38) (official no.  9383), ENSCO 51  (f/k/a Dual 41) (official
no. 9384),  ENSCO 53 (f/k/a  Dual 88)  (official no. 10260)  and ENSCO  54
(f/k/a  Dual 89) (official no.  10159) (all of  the aforementioned vessels
being herein collectively referred to as the "Rigs");

        WHEREAS,  Borrower C desires to incur Tranche C  Loans and to have
Tranche C  Letters of  Credit  issued for  its  account under  the  Credit
Agreement;

        WHEREAS, it is a  condition precedent to  the making of Tranche  C
Loans  and the issuance  of Tranche C  Letters of Credit  under the Credit<PAGE>


Agreement and to the occurrence  of the Effective Date that the  Assignors
shall  have executed and delivered to the Collateral Agent this Agreement;
and

        WHEREAS, the  Subsidiary Guarantor will obtain  benefits from  the
incurrence of  Tranche C Loans by Borrower C and the issuance of Tranche C
Letters  of Credit under the Credit  Agreement and, along with Borrower C,
desires  to execute this Agreement  to satisfy the  condition described in
the preceding paragraph;

        NOW, THEREFORE, in consideration of  the benefits accruing to  the
Assignors, the receipt  and sufficiency of which are  hereby acknowledged,
the Assignors hereby  make the following representations and warranties to
the Collateral Agent  and hereby  covenant and agree  with the  Collateral
Agent as follows:


        SECTION 1.  OBLIGATIONS SECURED.

        1.01   Obligations  Secured.    The  Agreement  is  made  for  the
benefit  of the Secured  Creditors to secure,  in the case  of Borrower C,
each of  the following, and in  the case of the  Subsidiary Guarantor, the
Subsidiary Guarantor's guaranty of each of the following: (i) the full and
prompt  payment  when due  of (x)  the principal  of  and interest  on the
Tranche C  Notes  issued,  and Tranche  C  Loans made,  under  the  Credit
Agreement, and  all reimbursement  obligations  and Unpaid  Drawings  with
respect  to the  Tranche  C  Letters of  Credit  issued  under the  Credit
Agreement  and  (y) all  other  obligations  and indebtedness  (including,
without limitation, indemnities, Fees and interest thereon) of  Borrower C
to the  Secured  Creditors, whether  now  existing or  hereafter  incurred
under,  arising out of or in connection  with the Credit Agreement and the
other  Credit Documents and the due performance and compliance by Borrower
C with all of the terms, conditions and agreements contained in the Credit
Agreement and the other Credit  Documents; (ii) any and all sums  advanced
by   the  Collateral  Agent  in  order  to  preserve  the  Collateral  (as
hereinafter defined) or preserve its  security interest in the Collateral;
(iii) in the event of any proceeding for the collection  or enforcement of
any indebtedness, obligations, or liabilities of Borrower C referred to in
clause  (i) above, after  an Event of  Default shall have  occurred and be
continuing, the reasonable  expenses of the Collateral Agent of re-taking,
holding, preparing for sale or lease, selling or otherwise disposing of or
realizing on the Collateral, or of any exercise by the Collateral Agent of
its rights hereunder, together with reasonable attorneys' fees of  counsel
to the Collateral  Agent and court costs; and (iv)  all reasonable amounts
paid  by  any Indemnitee  as to  which such  Indemnitee  has the  right to
reimbursement under Section  11 of this  Agreement (all such  obligations,
liabilities, sums and  expenses referred  to in clauses  (i) through  (iv)
above  being  collectively  referred to  as  the  "Obligations").   It  is
acknowledged and agreed that the "Obligations" shall include extensions of
credit of the  types described above, whether  outstanding on the date  of
this  Agreement  or extended  from time  to time  after  the date  of this
Agreement.


        SECTION 2.  ASSIGNMENT OF EARNINGS.<PAGE>


        2.01   The Subsidiary  Guarantor, as legal  and beneficial  owner,
and Borrower C  hereby assign, transfer  and set over unto  the Collateral
Agent  for the benefit of  the Secured Creditors  and their successors and
assigns, and hereby grant the Collateral Agent a security interest in, all
of their right, title and interest in  and to: (i) all day rate  payments,
freights, charter hire and any  other moneys earned and to be  earned, due
or to  become  due or  paid or  payable  to, or  for  the account  of  the
Assignors,  of whatsoever  nature,  arising out  of  any charter  parties,
drilling contracts or as a  result of the ownership, chartering  and other
operations of any kind whatsoever by the Assignors or their  agents of the
Rigs, (ii)  all moneys and claims for moneys due  and to become due to the
Assignors and all claims for damages arising  out of the breach of any and
all present or  future drilling contracts, charter parties, and operations
of every kind whatsoever of the Rigs and in and to any and all  claims and
causes of action for money,  loss or damages that may accrue  or belong to
the Assignors, their successors, or assigns, arising out of or  in any way
connected  with any  and  all present  and  future requisitions,  drilling
contracts,  charter parties, and other operations  of the Rigs of any kind
whatsoever,  (iii) all moneys and claims for  moneys due and to become due
to the Assignors, and  all claims for damages in respect  of the actual or
constructive total loss of or requisition or use of or title to any of the
Rigs  subject to  Section 3.03(c)  of the  Credit Agreement  and (iv)  any
proceeds  of   any  of   the   foregoing  (collectively,   the   "Earnings
Collateral").

        2.02   Subject  to  the  provisions   of  Section  2.03   of  this
Agreement, the  Collateral  Agent's  security  interest  in  all  accounts
receivable  included  in,  or  representing  proceeds  of,  the   Earnings
Collateral shall automatically be and be deemed released, without the need
for  any action on the part of the  Collateral Agent, from time to time as
such  accounts receivable arise or  are created, or  as funds representing
payments  of  such  Collateral (or  part  thereof)  are  collected by  the
Assignors. 

        2.03   Upon the  occurrence of  an Event  of  Default pursuant  to
Section  9.05 of the Credit Agreement (a "Bankruptcy Default") and without
any further act or notice, or upon the giving by the Collateral Agent of a
written notice (a "Release Termination Notice") to the Assignors after the
occurrence  and during  the  continuance  of  an  Event  of  Default,  the
automatic  release set  forth  in Section  2.02  of this  Agreement  shall
terminate.

        2.04   Upon the occurrence of  an Event of  Default, the Assignors
hereby represent, warrant and undertake that:

               (a)  notice of  this Agreement in the  form attached hereto
                    as  Exhibit  1  will  be  promptly  delivered  to  any
                    charterers of the Rigs; and

               (b)  each  will use  its good  faith efforts  to cause  any
                    charterer to  execute a Consent and  Agreement to this
                    Agreement in the form attached hereto as Exhibit 2 and
                    deliver such Consent and  Agreement to the  Collateral
                    Agent.

        2.05   Upon the  occurrence of an Event of Default, the Collateral
Agent shall be entitled to receive all payments of Earnings  Collateral of<PAGE>


the Rigs payable to the Assignors and assigned hereby.  Such payment shall
be made  to the account of  the Collateral Agent, and  the Assignors shall
cause all sums so payable to the Assignors and assigned hereby to be  paid
directly into such account.

        2.06   It  is hereby  expressly  agreed that,  anything  contained
herein to the contrary notwithstanding, the Assignors shall remain  liable
under  all charters and  contracts pertaining to  the Rigs to  perform the
obligations assumed  by them  thereunder, and  the Collateral  Agent shall
have no obligation or  liability of any nature  whatsoever under any  such
charter or contract  by reason of, or arising out  of, this Agreement, nor
shall the  Collateral Agent be required  to assume or be  obligated in any
manner  to perform  or fulfill any  obligation of  the Assignors  under or
pursuant to any  such charter or contract  or to make any payment  or make
any inquiry as to the nature or sufficiency of any payment received by the
Collateral Agent, or, unless and until indemnified to its satisfaction, to
present  or file  any claim  or to  take any  other action  to  collect or
enforce the payment of any amounts which  may have been assigned to it  or
to which  it may be entitled  hereunder or pursuant hereto at  any time or
times.

        2.07   The Assignors  shall promptly notify  the Collateral  Agent
in writing of the commencement and termination of  any period during which
any of the Rigs owned by them is requisitioned.

        2.08   Upon the occurrence of an  Event of Default, the Collateral
Agent  has  the right  to give  notice of  this  Agreement to  all account
debtors.

        2.09   The  Collateral Agent  shall not  be  required to  make any
inquiry as to  the nature or  sufficiency of any  payment received by  the
Collateral Agent, or, unless  and until indemnified  to  its satisfaction,
to present or file any  claim, or to take  any other action to collect  or
enforce the  payment of any amounts which may have  been assigned to it or
to which it may  be entitled hereunder or  pursuant hereto at any time  or
times.


        SECTION 3.  ASSIGNMENT OF INSURANCE

        3.01   The Assignors hereby sell,  assign, transfer, set  over and
grant a security interest unto the Collateral Agent as collateral security
for  the  Obligations, in  and to  the  following (all  of  the following,
collectively, the  "Insurance Collateral" and, together  with the Earnings
Collateral,  the  "Collateral"):    (i)  all  policies  and  contracts  of
insurances in respect of the Rigs whether now or hereafter  to be effected
and all renewals of or replacements for the same, (ii) all claims, returns
of premium and  other moneys and claims for moneys due  and to be come due
under said  insurances or in respect  of said insurances, (iii)  all other
rights of  the Assignors under or  in respect of said  insurances and (iv)
any proceeds of any of the foregoing. 

        3.02   It  is expressly agreed  that anything  herein contained to
the contrary notwithstanding, the Assignors shall remain liable under said
insurances  to perform all of  the obligations assumed  by them thereunder
and the Collateral Agent shall have no obligation or liability (including,
without  limitation,  any obligation  or  liability  with  respect to  the<PAGE>


payment of premiums, calls or assessments) under said insurances by reason
of  or  arising  out  of  this  instrument  of  assignment  nor shall  the
Collateral  Agent be  required or  obligated in any  manner to  perform or
fulfill  any  obligations  of the  Assignors  under  or  pursuant to  said
insurances or to make any payment or to make  any inquiry as to the nature
or sufficiency of any  payment received by  it or to  present or file  any
claim, or to  take any other action  to collect or enforce  the payment of
any amounts which or  may have been assigned to  it or to which it  may be
entitled hereunder at any time or times.

        3.03   The Assignors hereby covenant  and agree to  deliver notice
of this Assignment, in the form of Annex I hereto, to all underwriters and
that  where the consent of any underwriter  is required pursuant to any of
the  insurances assigned  hereby, the  Assignors shall  each use  its good
faith efforts to obtain such  consent in the form of Annex  II hereto, and
evidence thereof shall  be given to the Collateral Agent,  and there shall
be  duly endorsed upon all  slips, cover notes,  policies, certificates of
entry or other instruments issued  or to be issued in connection  with the
insurances  assigned hereby such clauses as to additional named assured or
loss payees as the Collateral Agent may reasonably request.  In all cases,
unless  otherwise agreed in writing  by the Collateral  Agent, such slips,
cover notes,  notices, certificates  of entry  or other instruments  shall
show  the Collateral Agent as  additional named assured  and shall provide
that there will be no recourse against the Collateral Agent for payment of
premiums, calls or assessments.

        3.04   In the event  that the Insurance Collateral or any  portion
thereof is sold in connection with a sale permitted by Section 8.02 of the
Credit  Agreement or  by  the  proviso  contained  in  the  definition  of
"Collateral  Disposition" in the Credit Agreement or is otherwise released
at  the direction of the Required  Banks (or all the  Banks, to the extent
required  by Section 12.12 of the Credit Agreement), the Collateral Agent,
at the  request and expense of  the Assignors, will duly  assign, transfer
and  deliver  to   the  Assignors  (without   recourse  and  without   any
representation or warranty) such of the Insurance Collateral (and releases
therefor) as is then being (or has been) so sold or released and as may be
in the  possession of  the Collateral Agent  and has not  theretofore been
released pursuant  to this Agreement.   At  any time the  Assignors desire
that the Insurance Collateral or a portion thereof be released as provided
in this  section, the Assignors  shall deliver to  the Collateral  Agent a
certificate  signed by  an Authorized  Officer (as  defined in  the Credit
Agreement) stating that the release of the Insurance Collateral or portion
thereof is permitted pursuant to this section.

        3.05   The  Assignors  hereby authorize  the  Collateral Agent  to
execute and file Financing Statements (Form  UCC-1) and amendments thereto
as provided in Article 9 of the Uniform Commercial Code.


        SECTION 4.  FURTHER ASSURANCES.

        The  Assignors will, at any time  and from time to  time, at their
own  expense,  promptly  execute  and  deliver  all  further   agreements,
instruments and other documents  and take all further  action that may  be
necessary or that the Collateral Agent  may reasonably request in order to
perfect and protect the  security interest purported to be  created hereby<PAGE>


or  otherwise to enable  the Collateral Agent to  exercise and enforce its
rights and remedies hereunder.


        SECTION 5.  TRANSFERS AND OTHER LIENS.

        The  Assignors  will not,  without  the  written  consent  of  the
Collateral Agent, (i)  sell, assign (by operation of  law or otherwise) or
otherwise  dispose  of  any interest  in  the  Collateral  (other than  as
expressly permitted under this  Agreement and the other  Credit Documents)
or (ii)  create or suffer  to exist any  Lien, security interest  or other
charge  or encumbrance upon  or with respect to  any Collateral except for
Permitted Liens and the security interest purported to be created hereby.


        SECTION 6.  ATTORNEY-IN-FACT.

        The  Assignors   hereby  appoint  the  Collateral   Agent  as  the
Assignor's attorney-in-fact, with full authority only after the occurrence
of and  during the continuance  of an Event of  Default, in the  place and
stead of the Assignors and in the name of the Assignors or otherwise, from
time  to  time  in  the  Collateral  Agent's  discretion  to  execute  any
instrument and to take any other  action which the Collateral Agent may in
good  faith  reasonably  deem  necessary or  advisable  to  accomplish the
purposes  of this  Agreement  or to  facilitate  the assignment  or  other
transfer by  the Collateral Agent of  any or all of  its rights hereunder,
including, without  limitation, (i)  to receive,  endorse and  collect all
instruments made payable  to the Assignors  and representing any  interest
payment or  other distribution in  respect of the  Collateral and  to give
full  discharge for the same  and (ii) to execute  and deliver any and all
instruments and other documents  that the Collateral Agent may  request in
connection with  the exercise by the Collateral Agent of any or all of its
rights hereunder.  Such  appointment of the Collateral Agent  as attorney-
in-fact is irrevocable and coupled with an interest.


        SECTION 7.  PERFORMANCE BY THE COLLATERAL AGENT.

        If  the Assignors  fail  to perform  any agreement  or  obligation
contained  herein,  the Collateral  Agent  itself  may  perform  or  cause
performance of such  agreement or obligation, and  the reasonable expenses
of  the Collateral Agent incurred in connection therewith shall be payable
to the Collateral Agent by the Assignors.


        SECTION 8.  RESPONSIBILITY OF THE COLLATERAL AGENT.

        Other  than the  exercise of  reasonable care  to assure  the safe
custody of the Collateral while held hereunder, the Collateral Agent shall
have no duty or liability to preserve  rights pertaining thereto and shall
be  relieved of all responsibility for the Collateral upon surrendering it
or tendering surrender of it to the Assignors.  The Collateral Agent shall
be  deemed  to  have   exercised  reasonable  care  in  the   custody  and
preservation  of the  Collateral in  its possession  if the  Collateral is
accorded treatment substantially equal to that  which the Collateral Agent
accords  its own  property.    Without  limiting  the  generality  of  the
foregoing,  neither  the  Collateral  Agent  nor  any  of  its  directors,<PAGE>


officers, agents  or  employees shall  be liable  (i) for  any failure  to
invest or reinvest  any cash in accordance herewith in  the absence of its
or  their own  gross negligence  or willful misconduct  or for  any losses
incurred by reason of investments made by the Collateral Agent pursuant to
Section 2.03 or (ii) for  any action taken or  omitted to be taken by  the
Collateral  Agent  (x) in  good  faith in  accordance with  the  advice of
counsel  with respect  to  any question  as  to  the construction  of  any
provision  hereof  or  any action  to  be taken  by  the  Collateral Agent
hereunder or (y) in accordance with any instructions or other notice which
the Collateral  Agent believes in good  faith to be properly  given by the
Assignors  hereunder.   This  Section  8  shall  have  no  application  to
Christiania Bank  og  Kreditkasse except  in  its capacity  as  Collateral
Agent.


        SECTION 9.  APPLICATION OF PROCEEDS.

        (a)    Subject to the applicability of Section 10 of  the Liberian
Fleet  Mortgage  and  the provisions  of  Section  3.03(c)  of the  Credit
Agreement, all moneys collected by  the Collateral Agent upon any  sale or
other  disposition  of any  Collateral,  together  with  all other  moneys
received  by the  Collateral Agent  hereunder or  under any  of the  other
Security Documents, shall be applied as follows:

              (i)    first,  to  the  payment of  all  amounts  owing  the
    Collateral Agent of  the type described  in clauses (ii) and  (iii) of
    Section 1.01;

             (ii)    second,  to  the  extent  moneys   remain  after  the
    application pursuant to  the preceding clause (i), an amount  equal to
    the outstanding Obligations shall be paid to the Secured Creditors  as
    provided  in Section  9(c), with  each  Secured Creditor  receiving an
    amount equal  to such Obligations held  by it or, if  the proceeds are
    insufficient to pay in full  all such Obligations, its Pro  Rata Share
    (as defined below) of the amount remaining to be distributed; and

            (iii)    third,   to  the  extent  moneys   remain  after  the
    application  pursuant to  the  preceding  clauses (i)  and  (ii),  and
    following  the termination  of this Agreement pursuant  to Section 12,
    any  surplus then remaining  shall be paid to  the Assignors, subject,
    however, to  the rights  of the  holder of  any then existing  Lien of
    which the Collateral Agent has actual notice (without investigation).

        (b)    For  purposes of  this  Agreement  "Pro Rata  Share"  shall
mean, when calculating a Secured Creditor's portion of any distribution or
amount  in  respect  of  any  Obligations,  the  amount  (expressed  as  a
percentage) equal to a fraction the  numerator of which is the then unpaid
amount of such Obligations owing  to or held by such Secured  Creditor and
the  denominator of  which  is the  then outstanding  amount  of all  such
Obligations.    For purposes  of determining  the  amount payable  to each
Secured Creditor, the Collateral  Agent shall be entitled to  request each
Secured Creditor  to  furnish it  with  written notice  of  the amount  of
Obligations then owed to it and shall be entitled to rely upon the amounts
stated therein in making such distributions.<PAGE>


        (c)    All  payments required  to  be  made to  Secured  Creditors
hereunder shall  be made to  the Collateral Agent  for the account  of the
Secured Creditors.

        (d)    For purposes  of applying  payments received in  accordance
with this Section 9, the  Collateral Agent shall be entitled to  rely upon
(i)  the  Administrative Agent  under the  Credit  Agreement and  (ii) the
Secured Creditors  for a determination (which the Administrative Agent and
each  Secured  Creditor,  by their  acceptance  of  the  benefits of  this
Agreement shall be  obligated to  provide upon request  of the  Collateral
Agent)  of the  outstanding  Obligations owed  to  the Secured  Creditors.
Unless it  has actual knowledge (including by way of written notice from a
Secured  Creditor) to  the contrary,  the Administrative  Agent  under the
Credit Agreement,  in furnishing  information  pursuant to  the  preceding
sentence, and the Collateral Agent, in acting hereunder, shall be entitled
to  assume  that (x)  no obligations  other  than principal,  interest and
regularly accruing fees are owing to any Secured Creditor.


        SECTION  10.  REPRESENTATIONS,  WARRANTIES  AND  COVENANTS OF  THE
ASSIGNORS.

        10.01  The Assignors hereby represent  and warrant that  they have
not  assigned  or pledged,  and hereby  covenant  that, without  the prior
written consent thereof of the Collateral Agent, so long as this Agreement
shall remain  in effect, they will not  assign or pledge the  whole or any
part of the right, title and interest hereby assigned to anyone other than
the Collateral Agent,  its successors or assigns,  and that they will  not
take or  omit to take  any action, the  taking or omission  of which might
result in an alteration or impairment of the Collateral or this Agreement,
or of any of the rights created in the Collateral by this Agreement.

        10.02  As  of  the  Restatement  Effective  Date,  this  Agreement
creates a valid and enforceable perfected security interest in and Lien on
all of the Collateral  in favor of the Collateral Agent for the benefit of
the Banks,  and no  filings or  recordings  are required  to perfect  such
security interest except for filings or  recordings required in connection
with this Agreement  which shall have been  made upon or prior  to (or are
the subject of arrangements, satisfactory to the Administrative Agent, for
filing on or  promptly after the  date of) the  execution and delivery  of
this Agreement.


        SECTION 11.  INDEMNITY.

        11.01  The Assignor  hereby covenants  with the  Assignee for  the
benefit of  the Collateral  Agent and the  Banks that  it will pay  to the
Assignee  on  demand  all moneys  whatsoever  which  the  Assignee or  the
Collateral Agent or the Banks shall or may reasonably expend, be put to or
become  liable for, in or about the protection, maintenance or enforcement
of the security created  by this Agreement or in or  about the exercise by
the Assignee  or the Collateral Agent and  the Banks of any  of the powers
vested in  it or  them  under the  Mortgages  or hereunder  together  with
interest thereon  at the rate provided  for in Section 1.08  of the Credit
Agreement from the date when such moneys were expended by  the Assignee or
such Bank  until the date of  actual receipt, whether before  or after any
relevant judgment.<PAGE>


        11.02  Any  amounts  paid  by  any Indemnitee  as  to  which  such
Indemnitee  has the  right to  reimbursement shall  constitute Obligations
secured by the  Collateral.   The indemnity obligations  of the  Assignors
contained in  this Section  11 shall  continue in  full  force and  effect
notwithstanding the full  payment of all the Tranche C  Notes issued under
the  Credit Agreement and all of the other Obligations and notwithstanding
the discharge thereof.


        SECTION 12.  TERMINATION; RELEASE; PARTIAL RELEASE.

        (a)    On the date on which the  Credit Agreement and all  Tranche
C Letters of  Credit shall have  been terminated, when  no Tranche C  Note
remains outstanding and  all Obligations shall have  been irrevocably paid
in full, this  Agreement shall terminate, and the Collateral Agent, at the
request and  expense of  the Assignors,  will execute  and deliver  to the
Assignors   a   proper  instrument   or   instruments   acknowledging  the
satisfaction  and termination  of this  Agreement, and  will duly  assign,
transfer  and deliver to the  Assignors (without recourse  and without any
representation or  warranty) such of the  Collateral as may  remain in the
possession of the Collateral  Agent together with any  moneys at the  time
held by the Collateral Agent hereunder.


        SECTION 13.  NOTICES, ETC.

        Except  as otherwise  expressly provided  herein, all  notices and
other communications provided for hereunder shall  be delivered and become
effective in accordance with Section 12.03 of the Credit Agreement.


        SECTION 14.  MISCELLANEOUS.

        14.01  This Agreement shall be  binding upon the Assignors and its
successors and assigns (although  the Assignors may not assign  its rights
or obligations under this Agreement) and shall inure to the benefit of and
be enforceable by  the Collateral  Agent and its  successors and  assigns.
The headings  in this  Agreement are  for purposes  of reference  only and
shall not  limit or define  the meaning  hereof.  THIS  AGREEMENT AND  THE
RIGHTS  AND OBLIGATIONS  OF THE  PARTIES HEREUNDER  SHALL BE  CONSTRUED IN
ACCORDANCE WITH AND BE GOVERNED BY THE LAW OF THE STATE OF NEW YORK.  This
Agreement  may be  executed in any  number of counterparts,  each of which
shall be an original,  but all of which  shall constitute one  instrument.
This Agreement  shall become effective  on the date  on which each  of the
parties  shall have executed  and delivered a  copy hereof.   In the event
that any provision of  this Agreement shall at any time  for any reason be
declared  or decided  to be  invalid, void or  otherwise inoperative  by a
court  of competent jurisdiction,  such declaration or  decision shall not
affect  the  validity  of  any  other  provision  or  provisions  of  this
Agreement, or the  validity of this  Agreement as a  whole.  In  the event
that by reason of any law or regulation in force or to become in force, or
by reason  of a ruling of any  court of competent jurisdiction,  or by any
other  reason whatsoever,  this  Agreement is  rendered  either wholly  or
partly defective, the Assignors shall furnish the Collateral Agent with an
alternative  assignment or  security and  do all  such other  acts as  are
reasonably required in order to ensure  and give effect to the full intent
of this Agreement.<PAGE>


        14.02  It is declared and agreed that the security created by this
Agreement shall  be held by the Collateral  Agent as a continuing security
for the payment of  all moneys which may at any time and from time to time
be  or become payable by the Assignors  under the Credit Agreement and the
other  Credit Documents  and that  the security  so created  shall not  be
satisfied by all intermediate  payment or satisfaction of any part  of the
amount  hereby secured  and  that the  security  so  created shall  be  in
addition to  and shall  not in any  way be  prejudiced or affected  by any
collateral or other security now or hereafter held by the Collateral Agent
for all or any part of the moneys hereby secured.

        14.03  Each and  every right, power and remedy given herein  or in
the Credit Agreement  or in the  other Credit Documents to  the Collateral
Agent shall be  cumulative and shall be in addition  to every other right,
power and remedy of the Collateral Agent now or hereafter existing at law,
in  equity or  by statute,  and each  and every  right, power  and remedy,
whether herein given or otherwise existing, may  be exercised from time to
time, in whole or in part, and as often and in such order as may be deemed
expedient by the Collateral Agent, and the exercise or the commencement of
the exercise of any right, power or remedy shall not be construed to  be a
waiver of  the right to exercise at the same  time or thereafter any other
right,  power or remedy.  No delay  or omission by the Collateral Agent in
the exercise of any right or power in the pursuance of any remedy accruing
upon any breach or default  by the Assignors shall impair any  such right,
power or remedy or be construed to be a waiver of any such right, power or
remedy or to  be an acquiescence therein; nor shall  the acceptance by the
Collateral Agent of any security or of any payment of or on account of any
of the amounts due from the Assignors to the Collateral Agent and maturing
after  any breach  or default  or of any  payment on  account of  any past
breach  or default  be  construed to  be  a waiver  of any  right  to take
advantage of any future breach or default or of any past breach or default
not completely cured thereby.


        SECTION 15.  WAIVER; AMENDMENT.

        None of the terms and conditions of this Agreement may be changed,
waived, modified or varied in any manner whatsoever unless in writing duly
signed by the  Assignors and  the Collateral  Agent (with  the consent  of
either the Required Banks (as defined in the Credit Agreement)  or, to the
extent  required by  Section 12.12  of  the Credit  Agreement, all  of the
Banks).


        SECTION 16.  SECURED CREDITOR ACKNOWLEDGMENT.

        By accepting the benefits of this Agreement, each Secured Creditor
acknowledges  and agrees that the rights and obligations of the Collateral
Agent shall be as set forth in Section 12 of the Credit Agreement.<PAGE>



        IN  WITNESS WHEREOF, the Assignors  and the  Collateral Agent have
caused this Agreement to  be executed by their duly  elected officers duly
authorized as of the date first above written.


ADDRESS:                              DUAL HOLDING COMPANY

1445 Ross Avenue
Suite 2700
Dallas, Texas  77202-2792             By________________________________
Attention:  Chief Financial Officer     Title:  
Tel: (214) 922-1500
Fax: (214) 855-0080


                                      ENSCO OFFSHORE COMPANY II



                                      By________________________________
                                         Title:



11 West 42nd Street                   CHRISTIANIA BANK OG KREDITKASSE,
New York, New York  10036             NEW YORK BRANCH, as Collateral Agent
Attention: Hans Chr. Kjelsrud   
Tel: (212) 827-4814
Fax: (212) 827-4888
                                      By________________________________
                                        Title:  


                                      By________________________________
                                        Title:  <PAGE>



                                                             EXHIBIT 1
                                                                to       
                                                        Security Agreement
                                                        ------------------




                            NOTICE OF ASSIGNMENT


TO:

TAKE NOTICE THAT:

    By a Security Agreement, dated the __ day of February, 1997 made by us
    to Christiania  Bank og  Kreditkasse, as  agent (the  "Assignee"), and
    relating to  the Liberian flag  vessel ________ (the  "Rig"), we  have
    assigned to the Assignee as  from the date hereof all our right, title
    and  interest in and to any moneys whatsoever payable to us under that
    certain [Charter Contract]  dated as of ________, ____  as at any time
    amended  (the  "Contract")  between  yourselves  and  the  undersigned
    concerning the  Rig, as  the Contract may  at any time  be amended  or
    supplemented, and all other rights and benefits whatsoever accruing to
    us  which arise or may arise  from the operation of  the Rig under the
    Contract including  (but without  prejudice to  the generality  of the
    foregoing) all claims  for damages for any  breach of the  Contract by
    you.

DATED THIS ____ day of ___________, ____.


                                      [                   ]


                                      By ___________________
                                        Its:<PAGE>



                                                            EXHIBIT 2
                                                               to       
                                                       Security Agreement
                                                       ------------------



                           CONSENT AND AGREEMENT


The undersigned, [                ],  a party to the Contract to which the
Notice  of  Assignment  delivered  pursuant  to  the  foregoing   Security
Agreement  refers (terms defined in the Security Agreement are used herein
with the  same meaning), in consideration of the sum of one dollar ($1.00)
lawful  money of the United States of  America and other good and valuable
consideration, paid  by Christiania  Bank og  Kreditkasse,  as agent  (the
"Assignee"), the receipt of which  is hereby acknowledged, hereby acknowl-
edges  notice of  and  consents and  agrees  to the  foregoing  collateral
assignment of  earnings and to all  of the terms thereof  and agrees that:
(1) it  will make payment directly to the account advised by the Assignee,
of  all moneys  due and  to become  due from  it under the  Contract until
receipt  of written notice  from the Assignee that  all obligations to the
Banks secured by said Security  Agreement have been paid in full;  and (2)
any  such payment  shall be  final and  the undersigned  will not  seek to
recover from the Assignee for any reason whatsoever any moneys paid by the
undersigned  to the Assignee by virtue of the foregoing Security Agreement
and this Consent and Agreement  but this shall not prevent the  set off or
credit against  or deduction from  any moneys payable  to the  Assignee by
virtue of said  Security Agreement of amounts owing  to the undersigned by
the Assignors under the Contract.

[           ], as charterer,  confirms and agrees that the Contract is  in
full force and effect and is enforceable in accordance with  its terms and
the Assignor is not in default thereunder.

This  Consent  and  Agreement  shall  be  governed  by  and  construed  in
accordance  with the  internal  laws of  the State  of  New York,  without
reference to principles of conflicts of law.

Dated: ______________, ____


                                      [                ]


                                      By _________________<PAGE>



                                                              ANNEX I
                                                                 to       
                                                        Security Agreement
                                                        ------------------





                            NOTICE OF ASSIGNMENT


    ________________________________________ (the "Owner"),  the owner  of
the Liberian flag offshore drilling rig _____________  (the "Rig"), HEREBY
GIVES NOTICE that by a Security Agreement dated February __, 1997 and made
between the Owner and Christiania Bank og Kreditkasse, New York Branch, as
Collateral  Agent (the "Assignee") for itself and certain other Banks, the
Owner  assigned  to  the Assignee  all  of the  Owner's  right,  title and
interest in and to all insurances and the benefit of all insurances now or
hereafter taken out in respect of the Rig.  This Notice of  Assignment and
loss payable clauses substantially similar to those set forth below are to
be  indorsed on  all policies  and certificates  of entry  evidencing such
insurance.


                                      [OWNER]

                                      By_________________________
                                        Its:


Loss Payable Clauses:
- --------------------
    All amounts of whatsoever nature payable under any insurance shall  be
payable  to the  Security Trustee  for distribution  first to  itself, the
Secured Creditors, the  Co-Agents and thereafter to the Owner or others as
their interests may appear.  Nevertheless, until otherwise required by the
Security  Trustee by notice to the underwriters, (i) amounts payable under
any insurance  on the Rigs  with respect to  the protection  and indemnity
risks shall be paid  directly to the Owner  to reimburse it for  any loss,
damage or expense  incurred by it and covered by such  insurance or to the
person to whom any  liability covered by such insurance has been incurred,
and (ii)  amounts payable  under any  insurance with  respect to  the Rigs
involving  any  damage  to   any  Rigs  not  constituting  an   actual  or
constructive  total loss, shall be  paid by the  underwriters directly for
the repair, salvage or other charges  involved or, if the Owner shall have
first  fully  repaired the  damage or  paid all  of  the salvage  or other
charges shall be paid  to the Owner as reimbursement  therefore, PROVIDED,
no amounts in  excess of US$2,000,000  shall be  paid from any  insurances
without the prior written consent of the Security Trustee.

    In the event of an  actual or constructive total loss or a compromised
constructive  total loss or requisition of any Rig, all insurance payments
therefor  shall be paid to the Security  Trustee and applied to reduce the
Total  Commitment in accordance  with and subject to  the terms of Section
3.03(c) and/or (d) of the  Credit Agreement.  The Owner shall  not declare<PAGE>


or agree with underwriters that any Rig is  a constructive or compromised,
agreed  or arranged  constructive  total loss  without  the prior  written
consent of the Security Trustee.

    In the  event of  an actual  constructive total  loss of any  Rig, the
Security  Trustee shall retain out  of the insurance  payments received on
account  of such loss and held by  the Security Trustee in accordance with
the Credit Agreement, any sum or sums that shall be or become owing to the
Security Trustee under this Mortgage  for the cost, if any,  of collecting
the insurance, which  sum or sums  shall become the  sole property of  the
Security  Trustee,  and  pay the  balance  to  the  Banks for  application
pursuant to  and  subject to  Section  3.03(c) and/or  (d) of  the  Credit
Agreement.<PAGE>


                                                              ANNEX II
                                                                 to       
                                                        Security Agreement
                                                        ------------------



                           CONSENT AND AGREEMENT


The undersigned, [                ],  a party to the Contract to which the
Notice  of  Assignment  delivered  pursuant  to  the  foregoing   Security
Agreement  refers (terms defined in the Security Agreement are used herein
with the same  meaning), hereby  acknowledges notice of  and consents  and
agrees to the foregoing collateral assignment  of insurance and to all  of
the terms thereof and agrees that it, subject to the  loss payable clauses
will make payment directly  to the account advised by Christiania  Bank og
Kreditkasse, New  York Branch (the  "Assignee"), of all moneys  due and to
become due from it under the Contract until receipt of written notice from
the Assignee  that all obligations to  the Banks secured  by said Security
Agreement have been paid in full.

This  Consent  and  Agreement  shall  be  governed  by  and  construed  in
accordance  with  the internal  laws  of the  State  of New  York, without
reference to principles of conflicts of law.

Dated: _______________, ____

                                      [                ]


                                      By ______________________<PAGE>



                                                             EXHIBIT H-1
                                                             -----------




                      FIRST PREFERRED FLEET MORTGAGE




                         Dated February ___, 1997





                          ENSCO OFFSHORE COMPANY



                              - in favor of -



                      CHRISTIANIA BANK OG KREDITKASSE,
                              NEW YORK BRANCH,
                            as Security Trustee


                                  ENSCO 68
                                  ENSCO 81
                                  ENSCO 82
                                  ENSCO 83
                                  ENSCO 84
                                  ENSCO 86
                                  ENSCO 87
                                  ENSCO 88
                                  ENSCO 89
                                  ENSCO 90
                                  ENSCO 93
                                  ENSCO 94
                                  ENSCO 95
                                  ENSCO 98
                                  ENSCO 99<PAGE>


                                   INDEX
                                   -----

CLAUSE   SUBJECT MATTER                                            PAGE
- ------   --------------                                            ----

   1.    DEFINITIONS AND INTERPRETATION   . . . . . . . . . . . .    3

   2.    REPRESENTATIONS AND WARRANTIES . . . . . . . . . . . . .    7

   3.    MORTGAGE . . . . . . . . . . . . . . . . . . . . . . . .    8

   4.    PAYMENT COVENANTS  . . . . . . . . . . . . . . . . . . .    9

   5.    PRESERVATION OF SECURITY . . . . . . . . . . . . . . . .    9

   6.    INSURANCE  . . . . . . . . . . . . . . . . . . . . . . .   11

   7.    RIG COVENANTS  . . . . . . . . . . . . . . . . . . . . .   15

   8.    PROTECTION OF SECURITY . . . . . . . . . . . . . . . . .   18

   9.    ENFORCEABILITY AND SECURITY TRUSTEE'S POWERS . . . . . .   19

  10.    APPLICATION OF MONEYS  . . . . . . . . . . . . . . . . .   21

  11.    FURTHER ASSURANCES . . . . . . . . . . . . . . . . . . .   22

  12.    POWER OF ATTORNEY  . . . . . . . . . . . . . . . . . . .   23

  13.    INDEMNITIES  . . . . . . . . . . . . . . . . . . . . . .   23

  14.    RIGHTS OF OWNER  . . . . . . . . . . . . . . . . . . . .   24

  15.    COMMUNICATIONS . . . . . . . . . . . . . . . . . . . . .   25

  16.    ASSIGNMENTS  . . . . . . . . . . . . . . . . . . . . . .   25

  17.    TOTAL AMOUNT, ETC. . . . . . . . . . . . . . . . . . . .   25

  18.    MISCELLANEOUS  . . . . . . . . . . . . . . . . . . . . .   25

  19.    JURISDICTION AND GOVERNING LAW . . . . . . . . . . . . .   26

  ACKNOWLEDGEMENT OF MORTGAGE

  EXHIBIT 1   FORM OF CREDIT AGREEMENT

  EXHIBIT 2   FORM OF MASTER AGREEMENT<PAGE>


THIS  FIRST  PREFERRED FLEET  MORTGAGE (this  "Mortgage")  is made  on the
______ day of February, 1997

BY
- --
(1)   ENSCO OFFSHORE COMPANY, a Delaware corporation having its  principal
      offices at  2700 Fountain  Place,  1445 Ross  Avenue, Dallas,  Texas
      75202 (the "Owner"),

IN FAVOR OF
- -----------
(2)   CHRISTIANIA BANK  OG  KREDITKASSE,  NEW  YORK  BRANCH,  a  Norwegian
      banking  corporation having its office  at 11 West  42nd Street, New
      York,  New York, as security  trustee for the  Banks (as hereinafter
      defined) and as mortgagee (the "Security Trustee")

WHEREAS
- -------
(A)   The Owner  is the sole owner of the whole of the following U.S. flag
      drilling rigs (the "Rigs"):

      Name        Official No.
      ----        ------------
      ENSCO 68    574668                    
      ENSCO 81    606512                    
      ENSCO 82    602912                    
      ENSCO 83    605536                    
      ENSCO 84    637544                    
      ENSCO 86    643110                    
      ENSCO 87    648969                    
      ENSCO 88    645637                    
      ENSCO 89    652440                    
      ENSCO 90    647859                    
      ENSCO 93    651385                    
      ENSCO 94    638685                    
      ENSCO 95    642112                    
      ENSCO 98    589096                    
      ENSCO 99    682070                    

      which Rigs have  been duly registered  in the name  of the Owner  in
      accordance with the laws of the United States of America with a home
      port at New Orleans, LA.

(B)   By  a Credit  Facility  Agreement dated  as  of December  15,  1993,
      Amended  and Restated as of  September 27, 1995,  further amended by
      Amendment  No.  1  dated June  13,  1996,  and  further Amended  and
      Restated   as  of  February  27,  1997   (as  modified,  amended  or
      supplemented  from time to  time, the "Credit  Agreement") among (i)
      the Owner, ENSCO  Offshore U.K.  Ltd. and Dual  Holding Company,  as
      borrowers  (collectively, the  "Borrowers"); (ii)  the Owner,  ENSCO
      Delaware,  Inc.  ("Parent")  and  ENSCO  International  Incorporated
      ("Holdings"), as guarantors (the "Guarantors");  (iii) the financial
      institutions party  thereto (the "Banks"); (iv)  Christiania Bank og
      Kreditkasse,  New  York Branch  and Den  norske  Bank ASA,  New York
      Branch,  as  co-agents  (the  "Co-Agents");  and  (v)  the  Security
      Trustee, as  administrative  agent,  letter  of  credit  issuer  and
      security trustee (in such capacity, the "Administrative Agent") (the<PAGE>


      form of which Credit Agreement together with Exhibit B-1 through B-3
      thereto but without the remaining attachments is attached  hereto as
      Exhibit  1), it was agreed  among other things  that the Banks would
      make available  to  the  Borrowers upon  the  terms  and  conditions
      therein described a  senior secured revolving  credit facility  (the
      "Facility")  in an aggregate amount  at any time  outstanding of Two
      Hundred  Million  United States Dollars  (US$200,000,000), providing
      for the making  of Loans and the issuance  of, and participation in,
      Letters of Credit as contemplated therein.

(C)   The  obligations of the Borrowers  with respect to  the Facility are
      evidenced  by the Credit  Agreement and the  other Credit Documents,
      including the promissory notes of the Borrowers payable to the order
      of the respective Banks (each a "Note" and collectively the "Notes")
      (the form  of which are attached  as Exhibit B-1 through  B-3 to the
      Credit Agreement).

(D)   By separate  Master Agreements  (on the  1992 ISDA  Master Agreement
      Multicurrency-crossborder form) made or to be made between  Holdings
      and  one or  more  of  the  Co-Agents  (the  form  of  which  Master
      Agreements and the Schedule thereto is attached hereto as Exhibit 2)
      Holdings has  entered or  will enter  into certain Transactions  (as
      such  term is defined in the Master Agreements) pursuant to separate
      Confirmations (as such terms are  defined in the Master  Agreements)
      providing for,  among other things, the payments  of certain amounts
      by Holdings to the respective Co-Agents.  The Master Agreements, all
      Transactions  from  time  to  time  entered  into  or  Confirmations
      exchanged under the Master Agreement and any amending,  supplemental
      or  replacement  agreement,  are   hereinafter  called  the  "Master
      Agreements".

(E)   This Mortgage is  made for  the benefit of  the Security Trustee  to
      secure (i) the full and prompt payment when due of (x) the principal
      of and  interest  on the  Notes issued,  and Loans  made, under  the
      Credit  Agreement,  and  all  reimbursement  obligations  and Unpaid
      Drawings  with respect  to the  Letters of  Credit issued  under the
      Credit Agreement  and (y)  all  other obligations  and  indebtedness
      (including  without  limitation,   indemnities,  Fees  and  interest
      thereon) of the  Borrowers to the Secured Creditors  (as hereinafter
      defined), whether now existing or hereafter incurred under,  arising
      out of  or in  connection with the  Credit Agreement  and the  other
      Credit Documents  including, without limitation,  this Mortgage  and
      the due  performance and  compliance by  the Owner  with all of  the
      terms, conditions  and agreements contained in  the Credit Agreement
      and the  other Credit Documents including,  without limitation, this
      Mortgage; (ii) any and all sums advanced by the Security  Trustee in
      order  to  preserve  the  Collateral  (as  hereinafter  defined)  or
      preserve its security interest in the Collateral; (iii) in the event
      of  any  proceeding   for  the  collection  or  enforcement  of  any
      indebtedness, obligations, or liabilities  of the Borrowers referred
      to  in clause  (i)  above, after  an  Event  of Default  shall  have
      occurred and be continuing, the reasonable expenses of the  Security
      Trustee of  re-taking, holding, preparing for sale or lease, selling
      or  otherwise disposing of or  foreclosing on the  Collateral, or of
      any  exercise  by  the Security  Trustee  of  its rights  hereunder,
      together with reasonable attorneys' fees of counsel to  the Security
      Trustee and court costs; (iv) all amounts paid by any  Indemnitee as<PAGE>


      to which such Indemnitee has the right to reimbursement under Clause
      13 of  this Mortgage (all  such obligations,  liabilities, sums  and
      expenses referred  to  in  clauses  (i)  through  (iv)  above  being
      collectively  referred  to  as  the  "Obligations");  and  (v)   all
      obligations  of Holdings  under the  Master Agreements  (the "Master
      Agreement  Liabilities").  It  is acknowledged  and agreed  that the
      "Obligations" shall  include  extensions  of  credit  of  the  types
      described above, whether outstanding on the date of this Mortgage or
      extended from time to time after the date of this Mortgage.

(F)   This First Preferred Fleet Mortgage is  entered into by the Owner in
      consideration of the Banks agreeing, at the request of the Owner and
      the other Borrowers, to make the Facility available to the Borrowers
      under the terms of  the Credit Agreement and as  a condition thereto
      and  for other good and valuable consideration provided by the Banks
      (the sufficiency of which the Owner hereby acknowledges).

NOW THIS MORTGAGE WITNESSETH AND IT IS HEREBY AGREED
- ----------------------------------------------------
1.    DEFINITIONS AND INTERPRETATION
      ------------------------------
1.01  In  this  Mortgage  unless  the  context  otherwise  requires,   the
      following expressions shall have the following meanings:

      "Administrative  Agent" shall have the same meaning for such term as
      set forth in the Credit Agreement;

      "Bank" means any lender listed  from time to time on Annex  I to the
      Credit Agreement (collectively, the "Banks");

      "Collateral" shall  have the same meaning for such term as set forth
      in the Credit Agreement;

      "Credit Agreement"  means the Credit Facility Agreement  dated as of
      December  15, 1993, Amended and  Restated as of  September 27, 1995,
      further amended by Amendment  No. 1 dated June 13,  1996 and further
      Amended and Restated as  of February 27, 1997, among  the Borrowers,
      the Guarantors,  the Banks,  the  Co-Agents and  the  Administrative
      Agent  first referred to in Recital (B) hereto, as modified, amended
      or supplemented from time to time;

      "Credit Documents" shall have the meaning for such term as set forth
      in the Credit Agreement;

      "Credit Facility  Period" shall  mean the  period commencing  on the
      date  hereof and  ending  on the  date  the Total  Commitments  have
      terminated, no  Letters of Credit  remain outstanding and  the Loans
      and  the Unpaid Drawings, together with interest, fees and all other
      obligations are paid in full;

      "Default  Rate"  shall  mean  the  rate  of interest  calculated  in
      accordance with Section 1.08(c) of the Credit Agreement;

      "Environmental  Approvals" means  all approvals,  licenses, permits,
      exemptions  or authorization required under applicable Environmental
      Laws;<PAGE>


      "Environmental Claims" means any  and all administrative, regulatory
      or judicial actions, suits, demands, demand letters, claims,  liens,
      notices of noncompliance  or violation,  investigations (other  than
      internal reports  prepared by  Holdings or  any of its  Subsidiaries
      solely in the  ordinary course of such Person's business  and not in
      response  to  any third  party  action or  request of  any  kind) or
      proceedings  relating in  any way  to any  Environmental Law  or any
      permit issued, or any  approval given, under any such  Environmental
      Law  (hereafter, "Claims"),  including, without limitation,  (a) any
      and  all  Claims  by  governmental  or  regulatory  authorities  for
      enforcement, cleanup, removal, response,  remedial or other  actions
      or damages pursuant to any applicable Environmental Law, and (b) any
      and all  Claims by  any third  party seeking damages,  contribution,
      indemnification,  cost recovery,  compensation or  injunctive relief
      resulting from Hazardous  Materials arising from  alleged injury  or
      threat of injury to health, safety or the environment;

      "Environmental Incident" means (i) any release of Hazardous Material
      from any of the Rigs, (ii) any incident in which Hazardous  Material
      is  released from  a vessel  other than  any of  the Rigs  and which
      involves collision between  the Rig  and such other  vessel or  some
      other incident of navigation or operation, in either case, where the
      Rig  or the Owner  is actually  or allegedly  at fault  or otherwise
      liable  (in whole  or  in  part)  or (iii)  any  incident  in  which
      Hazardous Material is released  from a vessel other than  any of the
      Rigs and  where the  Rig is  actually or  potentially  liable to  be
      arrested as a result and/or where the Owner is actually or allegedly
      at  fault or  otherwise liable  (and, in  each such  case, "release"
      shall  mean disposing,  discharging,  injecting, spilling,  leaking,
      leaching,  dumping, emitting,  escaping, emptying,  seeping, placing
      and  the like, into or upon  any land or water  or air, or otherwise
      entering into the environment);

      "Environmental Law" means any applicable Federal, state, foreign  or
      local statute, law, rule, regulation, ordinance, code, guide, policy
      and rule of common law now  or hereafter in effect and in  each case
      as  amended,  and  any  judicial  or  administrative  interpretation
      thereof,  including  any judicial  or administrative  order, consent
      decree or judgment,  relating to the environment, health,  safety or
      Hazardous    Materials,    including,   without    limitation,   the
      Comprehensive Environmental Response, Compensation and Liability Act
      of  1980, as amended, 42  U.S.C. Section 9601 ET  SEQ.; the Resource
      Conservation and Recovery Act, as amended, 42 U.S.C. Section 6901 ET
      SEQ.; the Federal Water Pollution Control Act, as amended, 33 U.S.C.
      Section  1251 ET SEQ.; the  Toxic Substances Control  Act, 15 U.S.C.
      Section  7401 ET SEQ.; the Clean Air  Act, 42 U.S.C. Section 7401 ET
      SEQ.; the Safe Drinking  Water Act, 42 U.S.C. Section  3808 ET SEQ.;
      the Oil  Pollution Act of 1990,  33 U.S.C. Section 2701  ET SEQ. and
      any  applicable  state   and  local  or   foreign  counterparts   or
      equivalents;

      "Fees" shall have the same meaning for such term as set forth in the
      Credit Agreement;

      "Hazardous Materials" means (a) any petroleum or petroleum products,
      radioactive  materials, asbestos in any form that is or could become
      friable, urea  formaldehyde foam  insulation, transformers  or other<PAGE>


      equipment  that  contained,  electric  fluid  containing  levels  of
      polychlorinated   biphenyls,  and  radon  gas;  (b)  any  chemicals,
      materials  or substances defined as or included in the definition of
      "hazardous  substances,"  "hazardous waste,"  "hazardous materials,"
      "extremely  hazardous waste,"  "restricted hazardous  waste," "toxic
      substances," "toxic pollutants," "contaminants," or "pollutants," or
      words of similar import, under any applicable Environmental Law; and
      (c)  any other chemical, material or substance, exposure to which is
      prohibited, limited or regulated by any governmental authority;

      "Indemnitee" shall have the meaning set forth in Section 13.01;

      "Insurances" includes all policies and contracts of insurance (which
      expression  includes all entries of  each of the  Rigs in protection
      and indemnity associations) which are from time to time taken out or
      entered  into in  respect  of the  Rigs or  otherwise  by the  Owner
      (whether  in the sole name of the Owner or in the joint names of the
      Owner  and  the  Administrative  Agent)  and  all  benefits  thereof
      (including claims of whatsoever nature and return of premiums);

      "Interest  Period" shall have the same meaning  for such term as set
      forth in Section 1.09 of the Credit Agreement;

      "Letter of  Credit" shall have the same meaning for such term as set
      forth in Section 2.01(a) of the Credit Agreement;

      "Loan(s)" shall  have the same meaning for such term as set forth in
      the Credit Agreement;

      "Major Casualty" means any  casualty to any  of the Rigs in  respect
      whereof  the  claim  or the  aggregate  of  the  claims against  all
      insurers,   before  adjustment   for  any   relevant   franchise  or
      deductible, exceeds  Five  Hundred Thousand  United  States  Dollars
      (US$500,000) or the equivalent in any other currency;

      "Master Agreements" shall  have the meaning provided  in recital (D)
      hereto;

      "Master Agreement Liabilities"  shall have the  meaning provided  in
      recital (E) hereto;

      "Note"  means each  promissory  note of  the  Owner referred  to  in
      Recital (C) hereto and in Section 1.05(a) of the Credit Agreement;

      "Obligations" shall have the meaning provided in Recital (E) hereto;

      "Oil Pollution Act 1990" means the Oil Pollution Act 1990 (33 U.S.C.
      Section 2701 ET SEQ.), as amended;

      "Other Rigs"  means, individually or  collectively, each of  (i) the
      jack-up  drilling unit ENSCO 50  owned by ENSCO  Offshore Company II
      ("ENSCO II") documented  under the laws and flag  of the Republic of
      Liberia with Official Number 9383 of 5,395 gross registered tons and
      1,618 net registered tons;  (ii) the jack-up drilling unit  ENSCO 51
      owned by ENSCO II documented under the laws and flag of the Republic
      of  Liberia with Official Number 9384 of 4,089 gross registered tons
      and 4,089 net registered tons; (iii) the jack-up drilling unit ENSCO<PAGE>


      53  owned by  ENSCO II  documented under  the laws  and flag  of the
      Republic of  Liberia  with  Official  Number 10260  of  4,976  gross
      registered  tons and  1,244 net  registered  tons; (iv)  the jack-up
      drilling unit ENSCO 54 owned by  ENSCO II documented under the  laws
      and  flag of the Republic  of Liberia with  Official Number 10159 of
      5,563 gross registered tons  and 1,668 net registered tons;  (v) the
      drilling  barge   ENSCO  80  owned  by  ENSCO   Offshore  U.K.  Ltd.
      ("Offshore") documented  under the laws and flag of the Commonwealth
      of the Bahamas with Official Number 724944 of 7,250 gross registered
      tons and 7,250 net registered tons; (vi) the drilling barge ENSCO 85
      owned  by Offshore  documented  under  the  laws  and  flag  of  the
      Commonwealth of  the Bahamas  with Official Number  724945 of  6,751
      gross registered tons and  6,751 net registered tons; and  (vii) the
      drilling  barge ENSCO 92 owned by Offshore documented under the laws
      and flag of  the Commonwealth  of the Bahamas  with Official  Number
      724946 of 6,541 gross registered tons and 6,541 net registered tons;

      "Permitted  Liens" shall have the same  meaning for such term as set
      forth in the Credit Agreement.  

      "Protection  and indemnity risks"  means the usual  risks covered by
      protection   and  indemnity  associations  of  international  repute
      including the proportion not recoverable  in case of collision under
      the ordinary  running-down clause (unless such  is recoverable under
      the relevant hull and machinery coverage);

      "Requisition Compensation"  means all  moneys or  other compensation
      payable during the Credit  Facility Period by reason  of requisition
      for  title  or  other compulsory  acquisition  of  any  of the  Rigs
      otherwise than by requisition for hire;

      "Rigs" means the rigs  described in Recital (A) hereto  and includes
      any  share  or  interest  therein  and  their  respective   engines,
      machinery, boats, tackle,  outfit, spare gear,  fuel, consumable  or
      other  stores,  belongings and  appurtenances  whether  on board  or
      ashore and  whether now owned  or hereafter acquired  (but excluding
      therefrom any leased equipment owned by third parties);

      "Secured Creditors"  shall mean  collectively the Security  Trustee,
      the  Banks, the  Letter of  Credit Issuer  and the  Collateral Agent
      under and as defined in the Credit Agreement;

      "Security  Documents" shall have the  same meaning for  such term as
      set forth in the Credit Agreement;

      "Security  Interest"  means a  mortgage,  charge  (whether fixed  or
      floating),   pledge,   lien,   hypothecation,    assignment,   trust
      arrangement,  title   retention  or   other  security   interest  or
      arrangement of any kind whatsoever;

      "Ship Mortgage Act" means the United States Ship Mortgage Act, 1920,
      as amended, recodified at 46 U.S.C. Section 31301, ET SEQ.;

      "Taxes" shall  have the same meaning  for such term as  set forth in
      the Credit Agreement;<PAGE>


      "Total Commitment" shall have the same meaning for  such term as set
      forth in the Credit Agreement;

      "Total Loss"  means (a) the actual,  constructive, arranged, agreed,
      or compromised  Total Loss of any  of the Rigs; (b)  the requisition
      for  title or other compulsory  acquisition or forfeiture  of any of
      the  Rigs otherwise than by  requisition for hire;  (c) the capture,
      seizure, arrest, detention or confiscation of any of the Rigs by any
      government or  by persons acting or  purporting to act  on behalf of
      any government unless the Rig or Rigs be released from such capture,
      seizure,  arrest or  detention  within thirty  (30)  days after  the
      occurrence thereof;

      "United States Dollars" and  "US$" means the lawful currency  of the
      United States of America;

      "Unpaid Drawing" shall  have the same meaning  for such term as  set
      forth in the Credit Agreement;

      "War Risks" includes the risk  of mines and all risks  excluded from
      the standard form of  English marine policy by  the free of  capture
      and seizure clause.

1.02  Except where  otherwise expressly  provided  or unless  the  context
      otherwise requires,  words and  expressions  defined in  the  Credit
      Agreement shall have the same meanings when used in this Mortgage.

1.03  In this Mortgage:

      (a)  Clause headings are inserted for convenience only and shall not
           affect the construction of this Mortgage and, unless  otherwise
           specified, all  references to  Clauses are  to clauses  of this
           Mortgage;

      (b)  unless  the  context  otherwise  requires,  words  denoting the
           singular number shall include the plural and vice versa;

      (c)  references   to   persons    include   bodies   corporate   and
           unincorporated;

      (d)  references  to assets  include property,  rights and  assets of
           every description;

      (e)  references to any document are to be construed as references to
           such document as amended or supplemented from time to time; and

      (f)  references to  any enactment include  re-enactments, amendments
           and extensions thereof.

2.    REPRESENTATIONS AND WARRANTIES
      ------------------------------
2.01  The  Owner hereby  represents and warrants  to the  Security Trustee
      that:

      (a)  the Owner lawfully owns  and is lawfully possessed of  the Rigs
           free from any Security Interest (except for Permitted Liens and
           the lien of this Mortgage), and the Owner warrants that it will<PAGE>


           defend its title and possession  in each of the Rigs and  every
           part thereof  for the benefit  of the Security  Trustee against
           the claims and demands of all persons whomsoever arising as the
           result of  any  liens,  charges  or  encumbrances,  other  than
           Permitted Liens;

      (b)  the   Owner  is  duly  organized  and  is  now  existing  as  a
           corporation  under the laws of  the State of  Delaware and will
           remain so during the term of this Mortgage;

      (c)  the Owner has full power and  authority (i) to register each of
           the Rigs in its name under United States  flag, (ii) to execute
           and deliver this Mortgage,  (iii) to mortgage each of  the Rigs
           as security for  the Obligations  and (iv) to  comply with  the
           provisions of,  and perform  all  its obligations  under,  this
           Mortgage;

      (d)  the Owner will not cause  or permit the Rigs to be  operated in
           any  manner contrary to applicable  law and the  Owner will not
           engage in  any unlawful trade or  violate any law  or carry any
           cargo  that  may expose  the  Rigs  to  penalty, forfeiture  or
           capture or otherwise operate the Vessels in any way which might
           jeopardize the  Security Trustee's security  in the Rigs.   The
           Owner will not  do, or suffer  or permit to  be done,  anything
           which  can  or  may  injuriously  affect  the  registration  or
           enrollment  of the Rigs under  the laws and  regulations of the
           United States of America and will at all times keep the Vessels
           duly documented thereunder.  The Owner is and will at all times
           remain a citizen of the United States within the  meaning of 46
           USC Section 12102;

      (e)  the  Owner has  taken  all necessary  action  to authorize  the
           execution and delivery of the  Notes, the Credit Agreement  and
           this Mortgage, and this Mortgage constitutes, the legal,  valid
           and  binding obligation  of the  Owner enforceable  against the
           Owner  in  accordance with  its  terms  (except to  the  extent
           limited by applicable  bankruptcy, reorganization,  insolvency,
           moratorium or other laws of general application relating  to or
           affecting  the enforcement of creditors' rights as from time to
           time in effect and general equitable principles) and when filed
           with  the  United  States Coast  Guard  National  Documentation
           Center in Falling Waters, West  Virginia, will create a  legal,
           valid and enforceable  first preferred fleet  mortgage lien  on
           each of the Rigs; and

      (f)  on  and after the Restatement Effective Date (as defined in the
           Credit Agreement),  each of the Security  Documents creates, as
           security  for the  Obligations (in  this paragraph  2.01(f), as
           defined in  the  Credit  Agreement)  purported  to  be  secured
           thereby, a valid and enforceable perfected security interest in
           and Lien  (as defined in  the Credit Agreement)  on all  of the
           Collateral  subject  thereto, to  the  extent  perfection of  a
           security interest or Lien is governed by Article 8 or Article 9
           of the UCC  (as defined in the  applicable Security Documents),
           or the Ship Mortgage Act, and subject to no other Liens (except
           that  the Collateral  may  be subject  to Permitted  Liens), in
           favor of  the  Collateral  Agent  (as  defined  in  the  Credit<PAGE>


           Agreement) or the Security Trustee, as the case may be, for the
           benefit of the Banks.  No filings or recordings are required in
           order  to  perfect the  Security  Interests  created under  any
           Security Document except for filings or recordings required  in
           connection  with any  such Security  Document which  shall have
           been made upon or prior to (or are the subject of arrangements,
           satisfactory to  the Administrative  Agent,  for filing  on  or
           promptly  after the  date  of  )  the  execution  and  delivery
           thereof.

2.02  The  representations  and  warranties  of  the  Owner  set   out  in
      Clause 2.01 shall survive  the execution of this Mortgage  and shall
      be deemed to be repeated at the time of the making of each  Loan and
      at the time  of the issuance of each Letter  of Credit, with respect
      to the  facts and  circumstances existing at  each such time,  as if
      made at each such time.

3.    MORTGAGE
      --------
3.01  In  order to secure the Obligations, the Owner has granted, conveyed
      and  mortgaged and does by these presents grant, convey and mortgage
      unto the  Security Trustee,  its successors  and assigns, the  whole
      (100%) of each  of the Rigs  TO HAVE AND TO  HOLD the same  unto the
      Security Trustee, its successors and  assigns upon the terms  herein
      set forth for the enforcement of the Obligations.

      Provided only  and the condition of  these presents is such  that if
      all of the Obligations  secured by this Mortgage have  terminated or
      have been  performed in full as  and when the same  shall become due
      and payable in accordance  with the terms  of this Mortgage and  the
      Owner and its successors  and assigns shall observe and  comply with
      the  covenants,  terms and  conditions  contained  in this  Mortgage
      expressed or implied to be performed, all without delay or fraud and
      according  to  the  true  intent  and  meaning  thereof,  then these
      presents and  the rights  hereunder shall  cease,  determine and  be
      void, otherwise  to be and remain  in full force and  effect and, in
      such event, the  indenture Security  Trustee agrees  to execute  and
      record at the expense of the  Owner, all such documents as the Owner
      may reasonably require to discharge this Mortgage.

      Notwithstanding anything to  the contrary herein it  is not intended
      that any provision of this Mortgage shall waive the preferred status
      of this Mortgage and  that if any provision  or part thereof  herein
      shall  be construed as waiving the preferred status of this Mortgage
      then such provision shall to such extent be void and of no effect.

3.02  The Owner shall remain liable to perform all the obligations assumed
      by it  in relation to  the Rigs  and none of  the Secured  Creditors
      shall  be under  any obligation  of any  kind whatsoever  in respect
      thereof or be  under any liability  whatsoever in  the event of  any
      failure by the Owner to perform its obligations in respect thereof.

3.03  On the date on which the Credit Agreement, all Letters of Credit and
      the  Master Agreement  have been  terminated, when  no Note  remains
      outstanding  and all  Obligations and  Master Agreement  Liabilities
      shall have  been  irrevocably  paid  in full,  this  Mortgage  shall
      terminate,  and the Security Trustee  at the request  and expense of<PAGE>


      the Owner, will execute and deliver to the Owner a proper instrument
      or instruments  acknowledging the  satisfaction  and termination  of
      this Mortgage, and  will duly  assign, transfer and  deliver to  the
      Owner (without recourse and without any representation or  warranty)
      such of  each of the  Rigs as  may remain in  the possession of  the
      Security Trustee together  with any moneys at  the time held by  the
      Security Trustee hereunder.

4.    PAYMENT COVENANTS
      -----------------
4.01  The Owner hereby covenants with the Secured Creditors:

      (a)  to  pay  and indemnify  the  Secured  Creditors  for  all  such
           expenses,  claims, liabilities,  losses,  costs, duties,  fees,
           charges or other  moneys as are stated  in this Mortgage  to be
           payable by  the Owner to or  recoverable from the Owner  by the
           Secured Creditors (or in  respect of which the Owner  agrees in
           this Mortgage to indemnify any of the Secured Creditors) at the
           times and in the manner specified in this Mortgage;

      (b)  to pay  interest on  any  such expenses,  claims,  liabilities,
           losses, costs,  duties, fees, charges or  other moneys referred
           to  in Clause 4.01(a) as paid by the Secured Creditors from the
           date on which  demand is made  by any Secured  Creditor as  the
           case  may be, for payment by the Owner of the relevant expense,
           claim, liability,  loss, cost, duty, fee, charge or other money
           incurred  by  any  Secured  Creditor for  which  the  Owner  is
           responsible (both before  and after any  relevant judgment)  at
           the Default Rate; and

      (c)  to pay and perform its  obligations which may be or  become due
           or  owing to any Secured  Creditor under this  Mortgage and the
           other Credit  Documents to which  the Owner  is or is  to be  a
           party  at the  times  and in  the  manner specified  herein  or
           therein.

5.    PRESERVATION OF SECURITY
      ------------------------
5.01  It is declared and agreed that:

      (a)  the  security created  by this  Mortgage shall  be held  by the
           Security Trustee  as a continuing security  for the performance
           of the Obligations and  that the security so created  shall not
           be satisfied by any intermediate payment or satisfaction of any
           part of the Obligations;

      (b)  the security so created  shall be in addition to  and shall not
           in  any way  be prejudiced  or  affected by  any  of the  other
           Security Documents;

      (c)  except   as  otherwise  specifically  provided  in  the  Credit
           Agreement  or  other Security  Documents, the  Security Trustee
           shall not have to wait  for the Collateral Agent, the  Banks or
           the  Letter  of  Credit Issuer  to  enforce  any  of the  other
           Security  Documents before  enforcing the  security created  by
           this Mortgage;<PAGE>


      (d)  no  delay or omission  on the part  of the  Security Trustee in
           exercising any right, power or remedy under this Mortgage shall
           impair  such right, power or remedy or be construed as a waiver
           thereof  nor shall any single  or partial exercise  of any such
           right, power or remedy preclude any further exercise thereof or
           the exercise of any other right, power  or remedy.  The rights,
           powers and remedies  provided in this  Mortgage are  cumulative
           and not exclusive of  any rights, powers and remedies  provided
           by  law and may be exercised from  time to time and as often as
           the Security Trustee may deem expedient; and

      (e)  any  waiver  by  the Security  Trustee  of  any  terms of  this
           Mortgage or  any consent  given by  the Security Trustee  under
           this Mortgage shall only  be effective if given in  writing and
           then only  for the purpose and  upon the terms for  which it is
           given.

5.02  Any settlement or discharge under this Mortgage between the Security
      Trustee  and  the Owner  shall be  conditional  upon no  security or
      payment to  the Secured  Creditors  or any  of  them by  the  Credit
      Parties (as defined  in the  Credit Agreement) or  any other  person
      being avoided or  set-aside or ordered to be refunded  or reduced by
      virtue  of  any  provision  or  enactment  relating  to  bankruptcy,
      insolvency, administration  or liquidation  for  the time  being  in
      force  and, if such condition is not satisfied, the Security Trustee
      shall be entitled  to recover from the Owner on  demand the value of
      such  security  or  the  amount  of any  such  payment  as  if  such
      settlement or discharge had not occurred.

5.03  The  rights of  the Secured  Creditors under  this Mortgage  and the
      security hereby  constituted  shall  not be  affected  by  any  act,
      omission,  matter or  thing  which, but  for  this provision,  might
      operate  to impair, affect or discharge such rights and security, in
      whole or in part,  including without limitation, and whether  or not
      known  to  or  discoverable  by  the  Credit  Parties,  the  Secured
      Creditors or any other person:

      (a)  any time or  waiver granted to the Credit Parties  or any other
           person; or

      (b)  the  taking, variation,  compromise, renewal  or release  of or
           refusal or neglect to perfect  or enforce any rights,  remedies
           or  securities against any of  the Credit Parties  or any other
           persons; or

      (c)  any   legal   limitation,  disability,   incapacity   or  other
           circumstances  relating  to the  Credit  Parties  or any  other
           person; or

      (d)  any amendment or supplement to the Credit Agreement, any of the
           other Credit Documents (other than this Mortgage)  or any other
           document or security; or

      (e)  the dissolution, liquidation,  amalgamation, reconstruction  or
           reorganization  of  any  of the  Credit  Parties  or any  other
           person; or<PAGE>


      (f)  the   unenforceability,  invalidity   or  frustration   of  any
           obligations  of any of the  Credit Parties or  any other person
           under the Credit  Agreement, any of the other  Credit Documents
           (other than this Mortgage) or any other document or security.

6.    INSURANCE
      ---------
6.01  The Owner  covenants with the Security Trustee throughout the Credit
      Facility Period that:

      (a)  The Owner  shall, at its own  expense, when and so  long as any
           Obligations remain  outstanding, insure the Rigs  and keep each
           of them insured,  or cause the  Rigs to be  insured, in  lawful
           money of the  United States,  in such amounts,  for such  risks
           (including  without  limitation,  hull and  machinery/increased
           value, protection and indemnity risks, pollution liability, War
           Risks  (subject to  subparagraph (vii)  below) and  in addition
           such  other  risks  which  would  be  covered  by  experienced,
           prudent, and  responsible  companies engaged  in  the  offshore
           contract  drilling   of  hydrocarbons   in  places   and  under
           conditions comparable to  those in which the Rigs  are employed
           from time  to  time  and  possessing  financial  and  operating
           characteristics similar to  those of the  Owner (herein  called
           "Similar  Companies"),   in   such  form   (including   without
           limitation,  the  form  of  the  loss  payable  clause  and the
           designation of  named  assureds)  and  with  such  first  class
           insurance  companies,  underwriters,  funds,  mutual  insurance
           associations or  clubs, as shall be  reasonably satisfactory to
           the Administrative Agent.  With respect to hull  and machinery/
           increased value insurance, including war risk, the Owner  shall
           insure  the Rigs  and keep each  of them insured,  or cause the
           Rigs to be insured, for an  amount which is when such amount is
           aggregated  with the amount  of such insurance  coverage on the
           Other  Rigs, such aggregate amount  shall be not  less than the
           greater of (i) 125% of the Total Commitment and (ii) the amount
           of  coverage that  would be  in the  range obtained  by Similar
           Companies on the Rigs and the Other Rigs.  Such insurance shall
           be  on  the basis  of  "new  for  old"  with no  deduction  for
           depreciation.  The  Rigs shall in  no event  be insured for  an
           amount  less  than the  agreed valuation  as  set forth  in the
           applicable marine and war risk policies.  

           (i)    Full form  marine hull and  machinery insurance  extended
                  to insure against all risks of  loss or damage, including
                  but not  limited to  the risk  of loss  from blowout  and
                  cratering and against such risks and  in such form as are
                  approved by  the Security  Trustee and  are necessary  or
                  advisable for  the  protection  of  the interest  of  the
                  Security Trustee and the Shipowner in an  amount not less
                  than  the  greater  of  (A),  when  added  to  insurances
                  covering  the   Rigs  and   Other  Rigs,   125%  of   the
                  Commitments or (B) the  amount of coverage  that would be
                  within  the range obtained  by Similar  Companies on such
                  Rigs and the Other Rigs.  The deductible or  self-insured
                  retention under  the policy shall  not exceed  US$250,000
                  per  occurrence.    The  policies  shall  be endorsed  to
                  delete the sue and labor  requirements as applied  to the<PAGE>


                  Security Trustee  and to provide  coverage for  collision
                  and earthquake hazards; 

           (ii)   Full   form   marine   protection   and   indemnity   and
                  comprehensive  general liability insurance (including any
                  excess   liability  insurance),  including  coverage  for
                  contractual liability,  pollution liability,  contractual
                  and   legal   wreck  removal,   crew   coverage,   excess
                  collision,  salvage  and  general average,  care, custody
                  and  control  coverage.   Such  protection and  indemnity
                  insurance shall  be  maintained  in  the  broadest  forms
                  generally available  to similar  Companies in the  United
                  States,  London or Scandinavian  markets and  shall be in
                  an amount not less than the  greater of (A) the  range of
                  that    carried    by    similar   companies    and   (B)
                  US$200,000,000.    Said  policy   shall  not  include   a
                  deductible  or   self-insured  retention  in  excess   of
                  US$250,000 per occurrence.  Such  insurance shall include
                  a cross-liability endorsement; 

           (iii)  The Owner shall, at all times  during which the Rigs  are
                  operating within  the jurisdiction of  the United  States
                  of America, maintain insurance  or post bond  or maintain
                  approved   evidence  of   financial  responsibility  with
                  respect to the Rigs to cover  the actual cost of  removal
                  of discharged  oil which  the Owner  or the  Rigs may  be
                  held  strictly liable (or  held liable  due to negligence
                  of  the Owner  or any other Person)  under the applicable
                  Environmental Laws, or under  any other federal  or state
                  law which, in   the future, may apply  to the Rigs  or to
                  the  Owner; and  the  Owner  shall maintain  insurance or
                  post   bond or  maintain approved  evidence of  financial
                  responsibility   covering  similar   pollution  risks  or
                  liabilities incident  thereto under  any law,  regulation
                  or  judicial  decision  of  any  foreign jurisdiction  or
                  jurisdictions    or   political    subdivision    thereof
                  applicable to the Owner, the Rigs or its operations;

           (iv)   Such workmen's  compensation or longshoremen's and harbor
                  workers' insurance  as  shall be  required by  applicable
                  law, including  endorsements for Outer Continental  Shelf
                  operations,  borrowed servant, voluntary compensation and
                  IN REM claims;

           (v)    Insurance  (with a limit of US$50,000,000 per occurrence)
                  naming  the Owner and  the Security  Trustee assureds and
                  loss  payees,  as  their  interests may  appear,  against
                  Operator's   Extra   Expense  ("O.E.E.")   liability   in
                  connection  with operations  conducted  by the  Rigs with
                  respect to Rigs operating  under a drilling contract with
                  a  financially  responsible  operator  acceptable to  the
                  Security  Trustee that  indemnifies  against  such O.E.E.
                  arising   out  of  blowout  (above   and  below  ground),
                  cratering,  redrilling/recompletion,  cost  of   control,
                  clean-up,  containment  seepage, pollution,  spillage  or
                  leakage  in connection  with operations  conducted by the
                  Rig, in form and  substance satisfactory to  the Security<PAGE>


                  Trustee, and third party  liabilities that may be assumed
                  by a contract  which is  legally enforceable and in  form
                  and  substance  satisfactory  to  the  Security  Trustee.
                  Deductibles or self-insured retentions  shall not  exceed
                  US$250,000 and shall be for the account of the Owner;

           (vi)   Excess   seepage,  pollution,  clean-up  and  containment
                  liability  coverage in  the  amount of  US$50,000,000  in
                  respect  of   offshore  operations   in  excess   of  and
                  following    the   seepage,   pollution,   clean-up   and
                  containment  liability  coverage recited  in subparagraph
                  (v) above.

           (vii)  Subject to  the provisions  of this  subsection, War  and
                  Political  Risk  insurance  naming  the  Owner  and   the
                  Security  Trustee  as  assureds  and  loss  payees, which
                  shall  be  maintained  in the  broadest  forms  generally
                  available  to  Similar Companies  in  the  United States,
                  London  or  Scandinavian  markets,   and  shall   include
                  coverage for  War  Risk,  hull  and machinery,  War  Risk
                  protection  and indemnity,  confiscation,  expropriation,
                  nationalization,  deprivation  and inability  to  export.
                  Such insurance shall be  in amounts, with  deductibles or
                  self-insured retentions  not to exceed, the corresponding
                  policies  described in subparagraphs (i)  and (ii) above.
                  The  Shipowner   shall  obtain   and  maintain  War   and
                  Political  Risk Insurance  for  any  Rig operating  in an
                  area  deemed to be hostile by the Owner's underwriters or
                  protection and indemnity club; 

          (viii)  Upon  prior written  notice  to  the Owner,  the Security
                  Trustee  may  obtain mortgagee's  interest  insurance  or
                  breach of warranty endorsement  in favor of  the Security
                  Trustee  with  such   underwriters  and  under  form   of
                  policies  approved by the  Security Trustee  in an amount
                  equal  to at least  125% of  the Commitments.   The Owner
                  shall reimburse the Security  Trustee, upon the  Security
                  Trustee's   written  demand,  from   time  to  time,  the
                  reasonable costs and  expenses incurred  by the  Security
                  Trustee  in effecting  and  maintaining  such mortgagee's
                  interest insurance on such terms and in such amounts  and
                  with such  underwriters  as  the Security  Trustee  shall
                  deem appropriate; and

           (ix)   Upon  prior written  notice  to  the Owner,  the Security
                  Trustee   may   obtain  an   Additional  Perils-Pollution
                  endorsement   covering   the  possible   consequences  of
                  pollution   involving   the   Rigs   including,   without
                  limitation, the  risk of  expropriation or  sequestration
                  of  any Rig or the imposition of a lien or encumbrance of
                  any kind  having priority over  this Mortgage.  The Owner
                  shall  reimburse the Security  Trustee, upon the Security
                  Trustee's   written  demand,  from  time   to  time,  the
                  reasonable costs  and expenses  incurred by the  Security
                  Trustee  in effecting and  maintaining on  such terms and
                  in   such  amounts   and  with   such  underwriters  such<PAGE>


                  Additional  Perils-Pollution  insurance coverage  as  the
                  Security Trustee shall deem appropriate.

      (b)  The Owner will furnish  the Security Trustee from time  to time
           on request and,  in any  event, at least  annually, a  detailed
           report  signed  by  a  firm  of  marine  insurance  brokers  or
           insurance  companies acceptable  to  the Security  Trustee with
           respect to  the insurance carried  and maintained on  each Rig,
           together  with  their opinion  that  the  insurance carried  is
           sufficient  in   that  it  is  customary   insurance  which  an
           experienced broker would effect  in similar circumstances  with
           Similar Companies and that,  in the opinion of the  brokers, it
           complies  with  the provisions  of  this Section  6.01  and any
           requirements which the  Security Trustee may  have notified  to
           the Owner.  The Owner  will use its best efforts to  cause such
           firm to agree to  advise a responsible officer of  the Security
           Trustee  in writing promptly of  any default in  the payment of
           any  premium or call  and of any  other act or  omission on the
           part  of the Owner  of which it  has knowledge and  which might
           invalidate or  render unenforceable, in  whole or in  part, any
           insurance on any Rig. 

      (c)  Unless  the  Security   Trustee  shall  otherwise   agree,  all
           insurance for  the Rigs  shall  be placed  through  independent
           brokers of recognized  standing and with  clubs or first  class
           underwriters reasonably acceptable to the Security  Trustee and
           must (i) name the  Security Trustee as a named  assured (except
           as to the insurance referred to  in Section 6.01(a)(iv) above),
           but without liability for premiums, calls or assessments,  (ii)
           contain a  cancellation  clause  providing  that  the  insurers
           undertake not to  exercise any right of cancellation which they
           may have by reason of non-payment of premiums or calls when due
           without giving thirty (30) days'  prior written notice of  such
           cancellation to  a responsible officer of  the Security Trustee
           and an opportunity of  paying any such unpaid premium  or call,
           (iii) if possible, based on the Owner's best efforts, contain a
           provision that the  insurance will not  be permitted to  lapse,
           terminate or  be materially modified without  thirty (30) days'
           prior  written notice being  given to a  responsible officer of
           the Security Trustee (except as to the insurance referred to in
           Section 6.01(a)(ii) and (v) above for which fourteen (14) days'
           prior  written notice shall  be required  and (iv)  contain the
           agreement of  the insurer  that  any loss  thereunder shall  be
           payable to the trustee notwithstanding any action, inaction  or
           breach of  representation or warranty  by the Owner,  except to
           the  extent provided by subsection (d) hereof.  The Owner shall
           not  change underwriters or clubs  as to any  insurance for the
           Owner without prompt written notice to a responsible officer of
           the Security Trustee of any such change. 

      (d)  All amounts of  whatsoever nature payable  under any  insurance
           shall be payable to the Security Trustee for distribution first
           to itself, the Secured Creditors, the Co-Agents and  thereafter
           to  the  Owner  or  others   as  their  interests  may  appear.
           Nevertheless, until otherwise required  by the Security Trustee
           by notice  to the underwriters,  (i) amounts payable  under any
           insurance  on  the Rigs  with  respect  to  the protection  and<PAGE>


           indemnity  risks  shall  be  paid  directly  to  the  Owner  to
           reimburse it for any loss, damage or expense incurred by it and
           covered  by such  insurance  or  to  the  person  to  whom  any
           liability covered by such insurance has been incurred, and (ii)
           amounts payable  under any insurance  with respect to  the Rigs
           involving  any damage to any Rigs not constituting an actual or
           constructive total  loss, shall  be  paid by  the  underwriters
           directly for  the repair, salvage or other charges involved or,
           if the Owner shall have first fully repaired the damage or paid
           all of the salvage  or other charges, or  irrevocably committed
           to  do  so,  shall  be  paid  to  the  Owner  as  reimbursement
           therefore, PROVIDED,  no amount  in excess of  an aggregate  of
           US$2,000,000  per incident  shall be  paid from  any insurances
           without the prior written consent of the Security Trustee. 

      (e)  In  the event  of an  actual or  constructive total  loss or  a
           compromised constructive total loss or requisition of any  Rig,
           all insurance  payments or compensation therefor  shall be paid
           to  the  Security  Trustee  and  applied to  reduce  the  Total
           Commitment  in accordance  with  and subject  to  the terms  of
           Section  3.03(c) and/or (d) of the Credit Agreement.  The Owner
           shall not declare or agree with  underwriters that any Rig is a
           constructive  or compromised,  agreed or  arranged constructive
           total  loss without the  prior written consent  of the Security
           Trustee. 

      (f)  In the  event of an  actual or  constructive total loss  of any
           Rig, the Security  Trustee shall  retain out  of the  insurance
           payments  received  on account  of such  loss  and held  by the
           Security Trustee  in accordance with the  Credit Agreement, any
           sum  or sums  that shall  be or  become  owing to  the Security
           Trustee under this Mortgage for the cost, if any, of collecting
           the insurance, which sum or sums shall become the sole property
           of the Security Trustee, and  pay the balance to the Banks  for
           application pursuant  to and subject to  Section 3.03(c) and/or
           (d) of the Credit Agreement. 

      (g)  The Owner shall arrange for the execution of such guarantees as
           may  from  time  to time  be  required  by  any protection  and
           indemnity or war risks association.

7.    RIG COVENANTS
      -------------
7.01  The Owner  covenants with the  Security Trustee that  throughout the
      Credit Facility Period the Owner will:

      (a)  keep the Rigs documented  in its name as United  States vessels
           and   to  do  or  allow   to  be  done   nothing  whereby  such
           documentation may be forfeited or imperilled;

      (b)  not  without the previous  consent in  writing of  the Security
           Trustee,  which  consent shall  not  be  unreasonably withheld,
           make,  or permit  to  be  made,  any  change  in  the  physical
           characteristics  of  any Rig  which  would,  in the  reasonable
           judgment of the Security Trustee, materially interfere with the
           suitability of such rig for normal commercial offshore drilling
           operations; <PAGE>


      (c)  the  Owner  will,  without  cost  or expense  to  the  Security
           Trustee, (i)  maintain  each  Rig  and its  machinery  in  such
           condition  and  repair as  will keep  the  Rig entitled  to the
           highest classification  in the American Bureau  of Shipping, or
           other  classification  society  of  like  standing approved  in
           writing  by the Security  Trustee for  such vessels,  (ii) keep
           each Rig, its machinery boilers, appurtenances and spare  parts
           in  a  good state  of repair,  wear  and tear  and depreciation
           excepted,  and in  efficient operating condition  in accordance
           with  good  commercial maintenance  practices  employed  in the
           offshore  oil and  gas contract  drilling industry,  (iii) keep
           each  Rig tight, staunch, strong and in all respects seaworthy,
           in so far as due diligence can make it, (iv)  maintain each Rig
           with   full  unexpired   classification   and  other   required
           certificates and (v) furnish  prior to December 1 of  each year
           to   the  Security   Trustee,  a   written  statement   of  the
           classification society that  any classification referred to  in
           clause (i) above is  in effect.  Except as  otherwise permitted
           by  the  Credit  Agreement,  each  Rig  shall,  and  the  Owner
           covenants that it will, at all times comply with all applicable
           laws, treaties and conventions of the United States of America,
           or to which the United States of America is a  party, from time
           to time in effect, and rules and regulations issued thereunder,
           and  shall have  on board  as and  when required  thereby valid
           certificates showing compliance therewith;

      (d)  at  all reasonable  times afford  the Security  Trustee or  its
           authorized representatives full and complete access to the Rigs
           during normal business hours for the purpose of  inspecting the
           Rigs and their cargoes  and papers, and the Owner  will deliver
           for inspection copies of such contracts and documents  relating
           to  the Rigs, whether on board or  not, as the Security Trustee
           may   reasonably  request,  provided   however,  that  (i)  all
           information not  on file with any  Governmental Agency obtained
           by  the  Security  Trustee  pursuant  to  any  Credit  Document
           concerning  the  Owner,  the  Rigs, the  other  assets  or  the
           financial condition of  the Owner and  prospects shall be  kept
           confidential  by  the  Security  Trustee subject,  however,  to
           requests from the Banks,  any applicable governmental  Agencies
           and  to  disclosures  of  such  information  to  assignees  and
           participants (and potential assignees and participants of which
           the Banks notify the Security  Trustee) pursuant to the  Credit
           Agreement,  unless  such non-governmental  parties  shall agree
           prior thereto to be bound by  this Section 6.01(d) and (ii) any
           inspection  of the  Rigs,  their cargoes  and  papers shall  be
           subject  to the requirements of  any operators of  the Rigs and
           any applicable Governmental Agencies.  All  reasonable expenses
           incurred   by   the   Security  Trustee   or   its   authorized
           representatives in  the exercise  of  its right  of  inspection
           hereunder shall be promptly paid by the Owner; 

      (e)  not transfer or change the flag or port of documentation of any
           of the Rigs without the written consent of the Security Trustee
           first  hand and obtained, and  any such written  consent to any
           one transfer or change  of flag or port of  documentation shall
           not be construed to be a waiver of  this provision with respect<PAGE>


           to any subsequent proposed  transfer or change of flag  or port
           of documentation; 

      (f)  not sell,  bareboat charter,  transfer or  mortgage any of  the
           Rigs other than to Holdings and its Subsidiaries (as defined in
           the  Credit  Agreement), without  the  written  consent of  the
           Security  Trustee,  which  consent  shall  not  be unreasonably
           withheld.  Any such  written consent to any one  sale, bareboat
           charter,  mortgage or transfer shall  not be construed  to be a
           waiver  of  this  provision  with  respect  to  any  subsequent
           proposed  sale, bareboat  charter, mortgage  or transfer.   Any
           such  sale, bareboat charter,  transfer or mortgage  of any Rig
           shall be subject  to the  provisions of this  Mortgage and  the
           lien thereof, and shall not affect the liabilities of the Owner
           hereunder;
 
      (g)  promptly pay  and discharge all debts,  damages and liabilities
           whatsoever which have  given or  may give rise  to maritime  or
           possessory liens  (other than  Permitted  Liens) on  or  claims
           enforceable against  the  Rigs  and  all  tolls,  dues,  taxes,
           assessments, governmental charges, fines and penalties lawfully
           charged on  or in respect of  the Rigs and all  other outgoings
           whatsoever in respect of the Rigs and in the event of arrest of
           the  Rigs pursuant  to legal process,  or in  the event  of the
           detention  of any of the Rigs in exercise or purported exercise
           of any such  lien or claim as aforesaid, procure the release of
           the  Rigs,  as  appropriate,  from  such  arrest  or  detention
           forthwith upon receiving  notice thereof by  providing bail  or
           otherwise as the circumstances may require;

      (h)  not employ the Rigs or allow the employment of any  of the Rigs
           in any trade or  business which is unlawful  under the laws  of
           any relevant jurisdiction or in carrying illicit or  prohibited
           goods or in any manner  whatsoever which may render any of  the
           Rigs liable  to destruction, seizure or confiscation and in the
           event of hostilities in  any part of the world  (whether war be
           declared or not) not  employ the Rigs or suffer  the employment
           of any of the Rigs in carrying any contraband goods or to enter
           or  trade  to any  zone which  is declared  a  war zone  by any
           government  or by  the War  Risks insurers  of the  Rigs unless
           there  shall have been effected  by the Owner  (at its expense)
           such  special, additional  or modified  insurance cover  as the
           Administrative Agent may require;

      (i)  notify both  the Security Trustee and  the Administrative Agent
           forthwith by telecopy, thereafter confirmed by letter of:

           (i)    any casualty to any of the Rigs which  is or is likely to
                  be a Major Casualty, and

           (ii)   any occurrence  in consequence  whereof any  of the  Rigs
                  has become  or is, by the  passing of  time or otherwise,
                  likely to become a Total Loss, and

           (iii)  any requirement or recommendation  made by any insurer or
                  classification  society  or by  any  competent  authority
                  which is  not complied with  within the  time provided by<PAGE>


                  such   insurer,   classification  society   or  competent
                  authority, including any extensions granted thereby, and

           (iv)   any  arrest  of  any  of  the  Rigs  or  the  exercise or
                  purported exercise of any lien on any of the Rigs or  any
                  requisition of any of the Rigs for hire; 

      (j)  place, and  use due diligence  to retain, a  properly certified
           copy of this Mortgage on board each of the Rigs with the papers
           and  cause such certified copy of this Mortgage to be exhibited
           to  any and  all persons  having business  with the  Rigs which
           might give  rise  to any  lien thereon  other than  a lien  for
           crew's  wages,  general   average  and  salvage   and  to   any
           representative of the  Security Trustee on demand  and to place
           and keep prominently  displayed in  the chart room  and in  the
           master's cabin of  each of the Rigs a framed  printed notice in
           plain  type in  English  of such  size  that the  paragraph  of
           reading matter shall cover a space not less than  6 inches wide
           and 9 inches high reading as follows:

                                "NOTICE OF MORTGAGE
                                -------------------
           This  Rig is  covered by  a First  Preferred Fleet  Mortgage to
           CHRISTIANIA BANK  OG KREDITKASSE, NEW YORK  BRANCH, as Security
           Trustee  for the  Banks  defined  in  the said  Mortgage  under
           authority of  the United  States Ship  Mortgage  Act, 1920,  as
           amended, recodified as 46  U.S.C. Section 31301 ET SEQ.   Under
           the  terms of  the  said Mortgage  neither  the Owner  nor  any
           charterer  nor the master of this  Rig nor any other person has
           any right, power or authority to create, incur or permit to  be
           imposed upon this Rig any lien whatsoever other than for crew's
           wages, general average and salvage."

      (k)  shall not cause or permit the Rigs to be operated in any manner
           contrary to law, shall not abandon the Rigs in a  foreign port,
           shall  not engage in any  unlawful trade or  violate any law or
           carry  any  cargo  that  shall  expose  the  Rigs  to  penalty,
           forfeiture or capture, and shall not do, or suffer or permit to
           be done,  anything  which can  or  may injuriously  affect  the
           registration  or enrollment of the  Rigs under the  laws of the
           United  States and  will  at  all  times  keep  the  Rigs  duly
           documented thereunder;

      (l)  notify both  the  Security  Trustee  and  Administrative  Agent
           forthwith by  telecopy, thereafter  confirmed  by letter  if  a
           libel be  filed against  any  Rig or  if any  Rig is  otherwise
           attached,  levied upon or taken  into custody by  virtue of any
           legal  proceeding  in  any   court,  tribunal  or  governmental
           authority (de jure  or de facto), or if any  Rig suffers damage
           in  excess  of US$500,000,  in the  case of  any such  libel or
           attachment, within thirty (30)  days will cause said Rig  to be
           released by posting bond, posting alternative security or other
           means and all liens thereon to be discharged, and will promptly
           notify the Security Trustee thereof in the manner aforesaid.


8.    PROTECTION OF SECURITY
      ----------------------

8.01  The Security Trustee shall without prejudice to its other rights and
      powers under  this  Mortgage  and  the  other  Credit  Documents  be
      entitled  (but  not bound)  at  any  time and  as  often  as may  be
      necessary  to take  any  such action  as it  may  in the  reasonable
      exercise of its discretion  think fit for the purpose  of protecting
      or maintaining the security  created by this Mortgage and  the other
      Credit Documents  (including, without limitation, such  action as is
      referred to in  Clause 8.02) and each and  every expense, liability,
      or loss (including, without  limitation, legal fees) so  incurred by
      the Secured Creditors in  or about the protection or  maintenance of
      the  said  security together  with  interest  payable thereon  under
      Clause 4.01(b) shall be repayable to it by the Owner on demand.

8.02  Without prejudice to the generality of Clause 8.01:

      (a)  if the Owner does not comply with the provisions of Clause 6 or
           any of  them, the Administrative  Agent shall be  entitled (but
           not bound) to effect or to replace and renew and thereafter  to
           maintain  the Insurances in such manner as in its discretion it
           may think fit and  to require that all policies,  contracts and
           other records relating to the Insurances (including details  of
           any correspondence concerning  outstanding claims) be forthwith
           delivered  to  such brokers  as  the  Administrative Agent  may
           nominate and to  collect, recover, compromise  and give a  good
           discharge for all claims then outstanding or thereafter arising
           under  the Insurances  or  any  of them  and  to  take over  or
           institute (if necessary using  the name of the Owner)  all such
           proceedings in connection therewith as the Administrative Agent
           in  its absolute  discretion may  think fit  and to  permit the
           brokers through whom  the collection or recovery is effected to
           charge the usual brokerage therefor; and

      (b)  if  the Owner  does not  comply with  the provisions  of Clause
           7.01(c) the  Security Trustee shall be entitled (but not bound)
           to  arrange  for the  carrying out  of  such repairs  to and/or
           surveys of the Rigs as it deems expedient or necessary; and

      (c)  if  the Owner  does not  comply with  the provisions  of Clause
           7.01(g) the Security  Trustee shall be entitled (but not bound)
           to pay  and discharge all  such debts, damages  and liabilities
           and all  such tolls, dues, taxes,  assessments, charges, fines,
           penalties and  other outgoings as are  therein mentioned and/or
           to  take any such measures  as it deems  expedient or necessary
           for the  purpose of securing the release of the Rig or Rigs, as
           the case may be.

9.    ENFORCEABILITY AND SECURITY TRUSTEE'S POWERS
      --------------------------------------------
9.01  Upon the happening of any of  the Events of Default specified in the
      Credit Agreement, and giving effect to any  applicable grace periods
      specified in the Credit Agreement, but without the necessity for any
      court order or declaration in any jurisdiction to the effect that an
      Event  of Default  has  occurred the  security  constituted by  this
      Mortgage  shall  become  immediately enforceable  and  the  Security
      Trustee shall  be entitled, as and when it  may see fit, to put into<PAGE>


      force  and exercise  all or  any of  the powers  possessed by  it as
      mortgagee of the Rigs or otherwise and in particular:

      (a)  to  exercise all  the rights  and remedies  in  foreclosure and
           otherwise given  to mortgagees by applicable  law including the
           provisions of the Ship Mortgage Act;

      (b)  to  take  possession of  any of  the  Rigs whether  actually or
           constructively and/or otherwise  to take control of  any of the
           Rigs wherever  such Rig or Rigs  may be and cause  the Owner or
           any  other person in possession  of such Rig  or Rigs forthwith
           upon demand  to  surrender the  same  to the  Security  Trustee
           without  legal process  and without  liability of  the Security
           Trustee for any losses or  damages incurred thereby and without
           having to render accounts to the Owner in connection therewith;

      (c)  to require that all policies, contracts, certificates of  entry
           and other records relating to the Insurances (including details
           of  and  correspondence   concerning  outstanding  claims)   be
           forthwith delivered  to or to  the order of  the Administrative
           Agent;

      (d)  to collect, recover,  compromise and give a  good discharge for
           or  procure  that the  Administrative  Agent  collect, recover,
           compromise  and give good discharge  for any and  all moneys or
           claims for moneys then outstanding or thereafter arising  under
           the Insurances or  any Requisition Compensation  and to  permit
           any brokers through whom collection or  recovery is effected to
           charge the usual brokerage therefor;

      (e)  to take over or institute  (if necessary using the name  of the
           Owner)   or,   to  the   extent   lawful,   procure  that   the
           Administrative  Agent   take   over  or   institute  all   such
           proceedings in connection with the Rigs, the Insurances, or any
           Requisition  Compensation  as  the  Security  Trustee  in   its
           absolute  discretion thinks  fit  and  to discharge,  compound,
           release or compromise  claims against the  Owner in respect  of
           the Rigs  which have given  or may give  rise to any  charge or
           lien  on  the  Rigs or  which  are  or  may  be enforceable  by
           proceedings against  the Rig  or  Rigs, provided  the  Security
           Trustee shall  act  in  a  commercially  reasonable  manner  in
           accordance with UCC Section 9-504;

      (f)  to sell any of the Rigs  or any share therein with prior notice
           to the  Owner free from  any claim  of or by  the Owner  of any
           nature  whatsoever,  and with  or  without the  benefit  of any
           charterparty  or other contract for the  employment of such Rig
           or  Rigs, by public auction  or private contract  at such place
           and upon such  terms (including, without  limitation, on  terms
           such  that  payment of  some or  all of  the purchase  price be
           deferred) as the  Security Trustee in  its absolute  discretion
           may  determine with  power to postpone  any such  sale, without
           being  answerable  for  any loss  occasioned  by  such  sale or
           resulting from postponement thereof, and/or itself  to purchase
           the Rig or Rigs, as the case may be, at any such public auction
           and to  set off the purchase  price against all or  any part of<PAGE>


           the Obligations; notice of such public  auction or private sale
           contract shall be given in the following manner:

             (i)  by  publishing such notice for ten consecutive  days in a
                  daily  newspaper  of  general  circulation  published  in
                  Dallas, Texas;

            (ii)  if the  place of sale should  not be  Dallas, Texas, then
                  also  by publication  of  a  similar notice  in  a  daily
                  newspaper, if any, published at the place of sale; and

           (iii)  by mailing  a similar notice  to the Owner on  the day of
                  first publication;

      (g)  to manage, insure,  maintain and repair the Rig or Rigs, as the
           case may be, and to charter, employ, sail or lay up the Rig  or
           Rigs, as the  case may be, in such manner,  upon such terms and
           for  such  period  as  the Security  Trustee  in  its  absolute
           discretion deems  expedient and for the  purposes aforesaid the
           Security  Trustee shall be entitled  to do all  acts and things
           incidental or conducive thereto and in particular to enter into
           such arrangements respecting the  Rig or Rigs, as the  case may
           be,  and   the  insurance,  management,   maintenance,  repair,
           classification, chartering  and employment of the  Rigs, in all
           respects  as if the Security Trustee were the owner of the Rigs
           and without being responsible for any loss thereby incurred;

      (h)  to recover from the  Owner on demand any  expenses, liabilities
           or losses  as may be  incurred by  the Security  Trustee in  or
           about  the exercise of the power vested in the Security Trustee
           under Clause 9.01(g);

      (i)  subject  to the terms of this Mortgage and the Credit Documents
           generally, to recover from  the Owner on demand each  and every
           expense, liability  or loss incurred by the Security Trustee in
           or about  or incidental to  the exercise  by it of  any of  the
           powers aforesaid.

9.02  The Security  Trustee shall not be obliged to make any enquiry as to
      the  nature or sufficiency of any  payment received by it under this
      Mortgage or to make any claim, take any action or enforce any rights
      and benefits assigned to the Security Trustee by this Mortgage or to
      which the Security Trustee may at any time be entitled hereunder.

9.03  Subject  to the proviso in  Section 9.04 below,  neither the Secured
      Creditors nor their agents, managers, officers, employees, delegates
      and  advisers shall  be  liable for  any expense,  claim, liability,
      loss, cost, damage or expense incurred or arising in connection with
      the  exercise  or purported  exercise  of  any  rights,  powers  and
      discretions under this  Mortgage in the absence  of gross negligence
      or wilful misconduct.

9.04  The Security Trustee shall not by reason of the taking possession of
      the  Rig or Rigs,  as the case  may be,  or be liable  to account as
      mortgagee-in-possession or for anything except actual receipts or be
      liable for any loss upon realization or for  any default or omission
      for  which  a  mortgagee-in-possession  might  be  liable  PROVIDED,<PAGE>


      HOWEVER, that so long as the Owner shall not have  abandoned the Rig
      or Rigs, if the  Security Trustee shall have become  a mortgagee-in-
      possession,  the  Owner shall  not be  liable  to third  parties for
      damages  or  losses arising  from and  after  the date  the Security
      Trustee becomes mortgagee-in-possession.

9.05  Upon  any sale  of any  of  the Rigs  or  any share  therein by  the
      Security Trustee the purchaser shall not be bound to see or  enquire
      whether the  power of sale of the Security Trustee has arisen in the
      manner provided in this Mortgage and the sale shall be  deemed to be
      within the  power of  the Security  Trustee and  the receipt  of the
      Security Trustee for the purchase money shall effectively  discharge
      the  purchaser who  shall  not  be  concerned  with  the  manner  of
      application  of the  proceeds of  sale or be  in any  way answerable
      therefor.

9.06  If  at  any  time after  an  Event  of  Default  and declaration  of
      acceleration  pursuant  to   this  Section  9,  and   prior  to  any
      foreclosure action having been  taken by the Security  Trustee under
      any  of the Credit Documents to foreclose upon the security provided
      by such documents, the Owner offers completely to cure all Events of
      Default  and  to  pay all  expenses,  advances  and  damages to  the
      Security Trustee consequent to such Events of Default, with interest
      at the rate provided for in Section 1.08(c) of the Credit Agreement,
      then  the Security  Trustee may  accept such  offer and  payment and
      restore  the Owner  to its  former position.   However,  such action
      shall  not  affect any  subsequent Event  of  Default or  impair any
      rights of the Security Trustee consequent thereto.

9.07  Immediately upon the occurrence  of an Event  of Default, or of  any
      event  which with  the  notice  or  lapse  of  time  or  both  would
      constitute an Event of Default, the owner shall notify a responsible
      officer  of  the  Security  Trustee of  such  occurrence  in writing
      setting  forth in  reasonable detail  the circumstances  surrounding
      such Event  of Default  or  other event  and what  action the  Owner
      proposes to take with respect thereto.

10.   APPLICATION OF MONEYS
      ---------------------
10.01 (a)  All  moneys  received by  the  Security Trustee  (or  any other
           Secured Creditor, as the case may be) in respect of sale of any
           of the Rigs or any  part thereof; in respect of  recovery under
           the  Insurances; or  in  respect  of Requisition  Compensation,
           shall be applied in the following manner:

             (i)  first,  to the payment  of all amounts owing the Security
                  Trustee of the  type described in  clauses (ii) and (iii)
                  of Recital (E);

            (ii)  second,   to  the   extent   moneys  remain   after   the
                  application  pursuant to  the  preceding  clause (i),  an
                  amount  equal  to the  outstanding  Obligations shall  be
                  paid to  the  Secured  Creditors  as provided  in  Clause
                  10.01(c), with  each Secured Creditor receiving an amount
                  equal to such Obligations held by  it or, if the proceeds
                  are insufficient  to pay  in full  all such  Obligations,<PAGE>


                  its  Pro  Rata Share  (as defined  below)  of the  amount
                  remaining to be distributed; 

           (iii)  third,   to   the  payment   of   any   Master  Agreement
                  Liabilities; and 

            (iv)  to  the  extent   moneys  remain  after  the  application
                  pursuant  to the preceding  clauses (i),  (ii) and (iii),
                  and following the termination  of this Mortgage  pursuant
                  to  Clause 3.01, any surplus then remaining shall be paid
                  to  the Owner,  subject,  however, to  the rights  of the
                  holder of  any then existing  Lien of  which the Security
                  Trustee has actual notice (without investigation)

      (b)  For purposes of this Mortgage "Pro Rata Share" shall mean, when
           calculating a Secured Creditor's portion of any distribution or
           amount in  respect of any Obligations, the amount (expressed as
           a percentage) equal to a fraction the numerator of which is the
           then unpaid amount of such Obligations owing to or held by such
           Secured  Creditor and  the  denominator of  which  is the  then
           outstanding  amount of all  such Obligations.   For purposes of
           determining the amount  payable to each  Secured Creditor,  the
           Security Trustee  shall be  entitled  to request  each  Secured
           Creditor to furnish  it with  written notice of  the amount  of
           Obligations then owed to it and shall be entitled to reply upon
           the amounts stated therein in making such distribution.

      (c)  All payments required to be made to Secured Creditors hereunder
           shall  be made  to  the Administrative  Agent under  the Credit
           Agreement for the account of the Secured Creditors.

      (d)  For purposes  of applying payments received  in accordance with
           this  Clause 10.01, the  Security Trustee shall  be entitled to
           rely  upon  (i)  the  Administrative  Agent  under  the  Credit
           Agreement and (ii)  the Secured Creditors  for a  determination
           (which the  Administrative Agent and each  Secured Creditor, by
           their  acceptance  of the  benefits of  this Mortgage  shall be
           obligated  to provide upon request of  the Security Trustee) of
           the  outstanding  Obligations  owed to  the  Secured Creditors.
           Unless it  has actual  knowledge (including  by way of  written
           notice  from  a   Secured  Creditor)  to   the  contrary,   the
           Administrative Agent under the Credit Agreement, in  furnishing
           information  pursuant  to  the   preceding  sentence,  and  the
           Security  Trustee, in  acting hereunder,  shall be  entitled to
           assume that  no obligations other than  principal, interest and
           regularly accruing fees are owing to any Secured Creditor.

11.   FURTHER ASSURANCES
      ------------------
11.01 The Owner shall execute and do all  such assurances, acts and things
      as the Security Trustee in its absolute discretion may require for:

      (a)  perfecting or  protecting the security created  (or intended to
           be created) by this Mortgage; or<PAGE>


      (b)  preserving  or  protecting any  of the  rights of  the Security
           Trustee, and  the other Secured Creditors  under this Mortgage;
           or

      (c)  ensuring that the security constituted by this Mortgage and the
           covenants and  obligations of  the  Owner under  this  Mortgage
           shall enure  to the  benefit  of any  transferee, successor  or
           assignee of the Security Trustee; or

      (d)  enforcing the security  constituted by this  Mortgage on or  at
           any time after the same shall have become enforceable; or

      (e)  the exercise of  any power, authority  or discretion vested  in
           the Security Trustee under this Mortgage,

      in any such case, forthwith upon  demand by the Security Trustee and
      at the expense of the Owner.

12.   POWER OF ATTORNEY
      -----------------
12.01 The Owner, by way of security and in order more fully to  secure the
      performance  of the  Obligations,  hereby  irrevocably appoints  the
      Security  Trustee as  its  attorney until  the  Total Commitment  is
      terminated  and none of  the Obligations remain  outstanding for the
      purposes of:

      (a)  doing  in  its name  all acts  and  executing, signing  and (if
           required) registering in its name all documents which the Owner
           itself could do, execute,  sign or register in relation  to the
           Rigs (including without  limitation, transferring title  to any
           of the Rigs  to a  third party), PROVIDED,  HOWEVER, that  such
           power shall not be  exercisable by or on behalf of the Security
           Trustee unless  an  Event of  Default specified  in the  Credit
           Agreement shall have occurred; and

      (b)  executing,   signing,  perfecting,  doing   and  (if  required)
           registering every such further assurance document, act or thing
           as is referred to in Clause 11.

12.02 The  exercise of such power as is  referred to in Clause 12.01(a) by
      or on  behalf  of the  Security  Trustee shall  not  put any  person
      dealing with the  Security Trustee  upon any enquiry  as to  whether
      this Mortgage has become enforceable nor shall such person be in any
      way affected by notice that this Mortgage has not become enforceable
      and, in relation to both Clauses 12.01(a) and 12.01(b), the exercise
      by the Security Trustee  of such power shall be  conclusive evidence
      of its right to exercise the same.

13.   INDEMNITIES
      -----------
13.01 Subject to the provisions of this Mortgage and the Credit Agreement,
      the  Owner  will indemnify  and save  harmless  each of  the Secured
      Creditors  and each agent or attorney appointed under or pursuant to
      this  Mortgage (each an "Indemnitee")  from and against  any and all
      expenses, claims,  liabilities, losses,  taxes, costs,  duties, fees
      and charges suffered, incurred  or made by such Secured  Creditor or
      such agent or attorney in good faith:<PAGE>


      (a)  in  the exercise or purported exercise of any rights, powers or
           discretions vested in them pursuant to this Mortgage; or

      (b)  in  the  preservation or  enforcement  of  the  rights  of  the
           Security Trustee under this Mortgage; or

      (c)  on the  release of the  Rigs from the security  created by this
           Mortgage,

      and the Secured Creditors and each such agent or attorney may retain
      and  pay all sums in respect of the same out of money received under
      the powers conferred by this Mortgage.  All such amounts recoverable
      by  such  Secured  Creditors or  such  agent  or  attorney shall  be
      recoverable on a full indemnity basis.

13.02 Without limiting  the  foregoing  Clause  13.01,  the  Owner  hereby
      further indemnifies and holds harmless each of the Secured Creditors
      and their respective officers,  directors, employees, attorneys  and
      agents   from  and   against  any   and  all   liabilities,  losses,
      obligations, claims, damages, penalties, causes of action, costs and
      expenses (including, without limitation, reasonable  attorneys' fees
      and expenses,  consultant fees,  investigation and  laboratory fees)
      imposed  upon or incurred  by or  asserted against  them, or  any of
      them,   by  reason  of   (a)  an   actual,  alleged   or  threatened
      Environmental Incident;  (b) any personal injury (including wrongful
      death) or  property damage  (real or  personal)  or economic  damage
      arising  out of or related  to such Environmental  Incident; (c) any
      Environmental Claim brought or threatened, or settlement reached; or
      (d) any  violation of  laws,  orders, regulations,  requirements  or
      demands  of government  authorities relating to  Hazardous Materials
      at, or discharged from any  of the Rigs, PROVIDED, HOWEVER,  that in
      the event that the  Security Trustee shall have become  a mortgagee-
      in-possession in  respect of one or  more of the Rigs  and the Owner
      shall not have abandoned such Rig or Rigs,  this indemnity shall not
      cover claims of  third parties  arising from or  after the  Security
      Trustee becomes mortgagee-in-possession.

13.03 If,  under any applicable law or regulation, and whether pursuant to
      a  judgment  being  made or  registered  against  the  Owner or  the
      liquidation of the Owner or for any other reason,  any payment under
      or in connection with this Mortgage is made or fails to be satisfied
      in  a currency (the "payment  currency") other than  the currency in
      which such payment is  due under or in connection with this Mortgage
      (the  "contractual currency"), then to the extent that the amount of
      such  payment  actually  received  by  the  Security  Trustee,  when
      converted into the  contractual currency  at the  rate of  exchange,
      falls short  of the  amount due  under  or in  connection with  this
      Mortgage, the Owner, as a separate and independent obligation, shall
      indemnify and hold  harmless the Security Trustee against the amount
      of such shortfall.  For the purposes  of this Clause 13.03, "rate of
      exchange" means  the rate at  which the Security Trustee  is able on
      the  date of  such payment  (or, if  it is  not practicable  for the
      Security  Trustee  to purchase  the  contractual  currency with  the
      payment  currency  on  the date  of  such  payment, at  the  rate of
      exchange  as  soon afterwards  as  is practicable  for  the Security
      Trustee  to do  so) to  purchase the  contractual currency  with the<PAGE>


      payment currency and shall  take into account any premium  and other
      costs of exchange with respect thereto.

14.   RIGHTS OF OWNER
      ---------------
14.01 Until an Event of Default shall have occurred, the Owner:

      (a)  shall be suffered and permitted to retain actual possession and
           use of the Rigs;

      (b)  subject to Section 8.02(b) of the Credit Agreement,  shall have
           the  right, from  time to  time in  its discretion  and without
           application to the  Security Trustee, and  without obtaining  a
           release thereof  by the Security  Trustee, to dispose  of, free
           from the  lien hereof, any boilers,  engines, machinery, masts,
           spars, sails, rigging, boats, anchors, chains, tackle, apparel,
           furniture,  fittings, drilling  equipment, pumps,  drill pipes,
           collars,  racking,   housing,   spare  parts   and   supporting
           inventory,  vehicles   or   living  quarters   or   any   other
           appurtenances of the Rigs.

15.   COMMUNICATIONS
      --------------
15.01 All notices hereunder shall be made pursuant to Section 12.03 of the
      Credit Agreement.

16.   ASSIGNMENTS
      -----------
16.01 This  Mortgage shall be binding upon  and shall enure to the benefit
      of   the  Owner,   the  Secured   Creditors  and   their  respective
      transferees, successors and permitted assigns and references in this
      Mortgage to any of them shall be construed accordingly.

16.02 The Owner  may not assign or transfer all or  any part of its rights
      and/or obligations under this Mortgage.

16.03 Pursuant to Section 12.04 of the Credit Agreement, each Bank has the
      right to  assign or transfer  all or any  part of its  rights and/or
      obligations  under  the  Credit  Agreement  on  the  terms   therein
      provided.   The  Security Trustee  shall notify  the  Owner promptly
      following any such assignment, transfer or change.

17.   TOTAL AMOUNT, ETC.
      ------------------
17.01 The  total amount of the direct or contingent obligations secured by
      this Mortgage  is Two Hundred Million  U.S. Dollars (US$200,000,000)
      of  principal plus  interest, fees,  commissions and  performance of
      mortgage covenants.   The interest of the Owner in the Rigs is 100%.
      The interest of the Security Trustee in the Rigs  is 100%.  The date
      of maturity is  October 18, 2001,  and the  discharge amount is  the
      same as the total amount plus such other sums as shall be payable by
      the Owner to the Banks under the Credit Agreement.

18.   MISCELLANEOUS
      -------------
18.01 If at any time any one or more of the provisions in this Mortgage is
      or  becomes invalid, illegal  or unenforceable in  any respect under<PAGE>


      any law or regulation, the validity,  legality and enforceability of
      the remaining provisions  of this Mortgage  shall not be in  any way
      affected or impaired thereby.

18.02 The  Security Trustee,  at  any  time and  from  time  to time,  may
      delegate by power of attorney  or in any other manner to  any person
      or persons all  or any  of the powers,  authorities and  discretions
      which are for  the time  being exercisable by  the Security  Trustee
      under this  Mortgage in relation to  the Rigs.   Any such delegation
      may  be made upon such terms and  subject to such regulations as the
      Security Trustee may  think fit.  The Security Trustee  shall not be
      in any way liable or responsible to the Owner for any loss or damage
      arising from any act, default, omission or misconduct on the part of
      any such delegate.

18.03 A certification or determination  by the Security Trustee as  to any
      matter  provided for  in  this Mortgage  shall,  in the  absence  of
      manifest error, be conclusive and binding on the Owner.

18.04 If there is a conflict  between the provisions of this  Mortgage and
      the Credit Agreement, the Credit Agreement shall govern.

19.   JURISDICTION AND GOVERNING LAW
      ------------------------------
19.01 THIS  MORTGAGE  AND  ALL  ISSUES  ARISING  IN  CONNECTION  WITH THIS
      MORTGAGE SHALL BE GOVERNED  BY AND CONSTRUED IN ACCORDANCE  WITH THE
      LAWS OF THE  UNITED STATES OF AMERICA AND TO THE EXTENT THAT THEY DO
      NOT APPLY, TO THE INTERNAL  LAWS OF THE STATE OF NEW  YORK, TO WHICH
      THE PARTIES HERETO SUBMIT.

19.02 The  Owner agrees that the  Security Trustee shall  have the liberty
      but shall  not be obliged to  take any proceedings in  the courts of
      any country to protect  or enforce the security constituted  by this
      Mortgage and/or  the Credit Agreement and the  Security Documents or
      to  enforce any  provisions  of  this  Mortgage  and/or  the  Credit
      Agreement and the  Security Documents or to  enforce the Obligations
      and  for the  purpose of  any proceedings  for such  enforcement the
      Owner  hereby submits  to  the jurisdiction  of  the courts  of  any
      country of the choice of the Security Trustee.

19.03 Without prejudice  to the generality  of Clause 19.02,  the Security
      Trustee shall have the right  to arrest and take action  against any
      or all of the Rigs at whatever place such Rig or Rigs shall be found
      lying and for  the purpose of any action which  the Security Trustee
      may bring before the  courts of such jurisdiction or  other judicial
      authority  and  for the  purpose of  any  action which  the Security
      Trustee may bring against any or  all of the Rigs, any writ, notice,
      judgment  or other legal process or documents may (without prejudice
      to any other method of service  under applicable law) be served upon
      the respective master of such Rig  or Rigs (or upon anyone acting as
      the master)  and such service  shall be deemed  good service  on the
      Owner for all purposes.

19.04 The  Owner agrees  that should  the Security  Trustee bring  a legal
      action or  proceedings against it or  its assets in relation  to any
      matters  arising  out of  or in  connection  with this  Mortgage, no
      immunity from  such  legal action  or  proceedings (which  shall  be<PAGE>


      deemed  to include,  without limitation,  suit, attachment  prior to
      judgment, other attachment, the obtaining of judgment, execution  or
      other enforcement)  shall be claimed by or on behalf of the Owner or
      with  respect of its assets, and the Owner hereby irrevocably waives
      any such  right of immunity  which it or  its assets now has  or may
      hereafter acquire and the Owner hereby consents generally in respect
      of  any legal action or proceedings  arising out of or in connection
      with this Mortgage to the  giving  out of any relief or the issue of
      any process in connection with such action or proceedings including,
      without  limitation,  the   making,  enforcement  or  execution   or
      attachment against any property whatsoever of any order  or judgment
      which may be made or given in such action or proceedings.

IN WITNESS   whereof the Owner has caused this Mortgage to be executed the
day and year first before written.

ENSCO OFFSHORE COMPANY


By_____________________________________
   Name:   Robert O. Isaac
   Title:  Assistant Secretary<PAGE>



                         ACKNOWLEDGEMENT OF MORTGAGE


STATE OF NEW YORK )
                  )  S.S.
COUNTY OF NEW YORK)



On this 27th day of February, 1997 before me personally appeared ROBERT O.
ISAAC to me known  who being by me duly  sworn did depose and say  that he
resides  at  Dallas,  Texas; that  he  is  Assistant  Secretary for  ENSCO
OFFSHORE  COMPANY, the  corporation described  in and  which  executed the
foregoing instrument; and that he signed  his name thereto by order of the
Board of Directors of ENSCO OFFSHORE COMPANY.





                __________________________________________ 
                               Notary Public<PAGE>


                                                              EXHIBIT H-2
                                                              -----------





                      FIRST PREFERRED FLEET MORTGAGE




                          Dated February 27, 1997





                         ENSCO OFFSHORE COMPANY II



                              - in favor of -



                      CHRISTIANIA BANK OG KREDITKASSE,
                              NEW YORK BRANCH,
                            as Security Trustee


                                  ENSCO 50
                                  ENSCO 51
                                  ENSCO 53
                                  ENSCO 54<PAGE>



                                   INDEX
                                   -----

CLAUSE      SUBJECT MATTER                                          PAGE
- ------      --------------                                          ----

   1.       DEFINITIONS AND INTERPRETATION  . . . . . . . . . . . .    3

   2.       REPRESENTATIONS AND WARRANTIES  . . . . . . . . . . . .    7

   3.       MORTGAGE  . . . . . . . . . . . . . . . . . . . . . . .    8

   4.       PAYMENT COVENANTS . . . . . . . . . . . . . . . . . . .    9

   5.       PRESERVATION OF SECURITY  . . . . . . . . . . . . . . .   10

   6.       INSURANCE . . . . . . . . . . . . . . . . . . . . . . .   11

   7.       RIG COVENANTS . . . . . . . . . . . . . . . . . . . . .   15

   8.       PROTECTION OF SECURITY  . . . . . . . . . . . . . . . .   18

   9.       ENFORCEABILITY AND SECURITY TRUSTEE'S POWERS  . . . . .   19

  10.       APPLICATION OF MONEYS . . . . . . . . . . . . . . . . .   21

  11.       FURTHER ASSURANCES  . . . . . . . . . . . . . . . . . .   22

  12.       POWER OF ATTORNEY . . . . . . . . . . . . . . . . . . .   23

  13.       INDEMNITIES . . . . . . . . . . . . . . . . . . . . . .   23

  14.       RIGHTS OF OWNER . . . . . . . . . . . . . . . . . . . .   24

  15.       COMMUNICATIONS  . . . . . . . . . . . . . . . . . . . .   25

  16.       ASSIGNMENTS . . . . . . . . . . . . . . . . . . . . . .   25

  17.       TOTAL AMOUNT, ETC.  . . . . . . . . . . . . . . . . . .   25

  18.       MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . .   25

  19.       JURISDICTION AND GOVERNING LAW  . . . . . . . . . . . .   26

  ACKNOWLEDGEMENT OF MORTGAGE

  EXHIBIT 1    FORM OF CREDIT AGREEMENT

  EXHIBIT 2    FORM OF SUBSIDIARY GUARANTY<PAGE>



THIS FIRST PREFERRED FLEET MORTGAGE (this "Mortgage") is  made on the 27th
day of February, 1997

BY
- --
(1)   ENSCO  OFFSHORE  COMPANY  II,  a  Delaware  corporation  having  its
      principal offices at 2700 Fountain Place, 1445 Ross Avenue,  Dallas,
      Texas 75202 (the "Owner"),

IN FAVOR OF
- -----------
(2)   CHRISTIANIA BANK  OG  KREDITKASSE,  NEW  YORK  BRANCH,  a  Norwegian
      banking  corporation having its office  at 11 West  42nd Street, New
      York,  New York, as security  trustee for the  Banks (as hereinafter
      defined) and as mortgagee (the "Security Trustee")

WHEREAS
- -------
(A)   The  Owner is the sole owner of  the whole of the following Liberian
      flag drilling rigs (the "Rigs"):

      Name        Official No.              GRT          NRT
      ----        ------------              ---          ---
      ENSCO 50    9383                      5395         1618
      ENSCO 51    9384                      4089         4089
      ENSCO 53    10260                     4976         1244
      ENSCO 54    10159                     5563         1668

      which Rigs  have been duly  registered in the  name of the  Owner in
      accordance with the laws of the Republic of Liberia with a home port
      at Monrovia, Liberia.

(B)   By  a Credit  Facility  Agreement dated  as  of December  15,  1993,
      Amended  and Restated as of  September 27, 1995,  further amended by
      Amendment  No.  1  dated June  13,  1996,  and  further Amended  and
      Restated  as  of   February  27,  1997  (as   modified,  amended  or
      supplemented from time  to time, the  "Credit Agreement") among  (i)
      ENSCO Offshore  Company ("Offshore"), "ENSCO Offshore  U.K. Ltd. and
      Dual Holding  Company, as borrowers (collectively, the "Borrowers");
      (ii)  Offshore,   ENSCO   Delaware,  Inc.   ("Parent")   and   ENSCO
      International   Incorporated   ("Holdings"),   as  guarantors   (the
      "Guarantors"); (iii)  the financial institutions  party thereto (the
      "Banks"); (iv) Christiania Bank og Kreditkasse, New York Branch  and
      Den  norske  Bank  ASA, New  York  Branch,  as  co-agents (the  "Co-
      Agents");  and (v)  the Security  Trustee, as  administrative agent,
      letter  of credit issuer and security trustee (in such capacity, the
      "Administrative Agent") (the form of which Credit Agreement together
      with Exhibit  B-1  through B-3  thereto  but without  the  remaining
      attachments  is attached hereto as  Exhibit 1), it  was agreed among
      other  things that the Banks  would make available  to the Borrowers
      upon  the terms and  conditions therein  described a  senior secured
      revolving credit facility (the "Facility") in an aggregate amount at
      any time outstanding  of Two Hundred  Million United States  Dollars
      (US$200,000,000), providing for the making of Loans and the issuance
      of, and participation in, Letters of Credit as contemplated therein.<PAGE>

(C)   The  obligations of the Borrowers  with respect to  the Facility are
      evidenced by  the Credit Agreement  and the other  Credit Documents,
      including the promissory notes of the Borrowers payable to the order
      of the respective Banks (each a "Note" and collectively the "Notes")
      (the form  of which are attached  as Exhibit B-1 through  B-3 to the
      Credit Agreement).

(D)   The  Owner,  for good  and  valuable  consideration has  authorized,
      executed and  delivered a Subsidiary Guaranty  (as modified, amended
      or supplemented from time  to time, the "Subsidiary  Guaranty"), the
      form of which Subsidiary  Guaranty is attached hereto as  Exhibit 2,
      in favor of the Administrative Agent guaranteeing the performance of
      "Borrower C" (as  that term is  defined in the Credit  Agreement) of
      its  obligations under  the Credit  Agreement and  the other  Credit
      Documents.

(E)   This Mortgage is  made for the  benefit of  the Security Trustee  to
      secure the  guaranty by the Owner of (i) the full and prompt payment
      when  due of (x) the principal of  and interest on the Notes issued,
      and Loans  made, by Borrower C  under the Credit  Agreement, and all
      reimbursement obligations and  Unpaid Drawings with  respect to  the
      Letters  of Credit issued under the Credit Agreement for the benefit
      of  Borrower  C, and  (y)  all  other obligations  and  indebtedness
      (including  without  limitation,  indemnities,  Fees   and  interest
      thereon) of  Borrower C  to  the Secured  Creditors (as  hereinafter
      defined), whether now existing or hereafter incurred under,  arising
      out of  or in  connection with  the Credit  Agreement and  the other
      Credit Documents  including, without limitation,  this Mortgage  and
      the due  performance and compliance  by Borrower C  with all  of the
      terms, conditions  and agreements contained in  the Credit Agreement
      and the  other Credit Documents including,  without limitation, this
      Mortgage; (ii) any and  all sums advanced by the Security Trustee in
      order  to  preserve  the  Collateral  (as  hereinafter  defined)  or
      preserve its security interest in the Collateral; (iii) in the event
      of  any   proceeding  for  the  collection  or  enforcement  of  any
      indebtedness, obligations, or liabilities of Borrower C referred  to
      in clause (i) above, after an  Event of Default shall have  occurred
      and  be continuing, the reasonable expenses  of the Security Trustee
      of re-taking,  holding,  preparing for  sale  or lease,  selling  or
      otherwise disposing of or  foreclosing on the Collateral, or  of any
      exercise by the  Security Trustee of its  rights hereunder, together
      with reasonable attorneys' fees of  counsel to the Security  Trustee
      and  court costs; and (iv) all amounts  paid by any Indemnitee as to
      which such Indemnitee has the right to reimbursement under Clause 13
      of this  Mortgage  (all  such  obligations,  liabilities,  sums  and
      expenses  referred  to  in  clauses  (i) through  (iv)  above  being
      collectively referred to as the "Obligations").  It  is acknowledged
      and agreed that the "Obligations" shall include extensions of credit
      of the types  described above,  whether outstanding on  the date  of
      this Mortgage or  extended from time to time after  the date of this
      Mortgage.

(F)   This First  Preferred Fleet Mortgage is entered into by the Owner in
      consideration of the Banks  agreeing, at the request of  Borrower C,
      to make the Facility available to Borrower C under the  terms of the
      Credit Agreement and as a  condition thereto and for other good  and
      valuable  consideration provided  by the  Banks (the  sufficiency of
      which the Owner hereby acknowledges).<PAGE>



NOW THIS MORTGAGE WITNESSETH AND IT IS HEREBY AGREED
- ----------------------------------------------------
1.    DEFINITIONS AND INTERPRETATION
      ------------------------------
1.01  In  this  Mortgage  unless  the  context  otherwise  requires,   the
      following expressions shall have the following meanings:

      "Administrative  Agent" shall have the same meaning for such term as
      set forth in the Credit Agreement;

      "Bank" means any lender  listed from time to time on Annex  I to the
      Credit Agreement (collectively, the "Banks");

      "Collateral"  shall have the same meaning for such term as set forth
      in the Credit Agreement;

      "Credit Agreement" means the  Credit Facility Agreement dated as  of
      December  15, 1993, Amended and  Restated as of  September 27, 1995,
      further amended by  Amendment No. 1 dated June  13, 1996 and further
      Amended and Restated as  of February 27, 1997, among  the Borrowers,
      the Guarantors,  the Banks,  the  Co-Agents and  the  Administrative
      Agent  first referred to in Recital (B) hereto, as modified, amended
      or supplemented from time to time;

      "Credit Documents" shall have the meaning for such term as set forth
      in the Credit Agreement;

      "Credit Facility Period"  shall mean  the period  commencing on  the
      date  hereof and  ending  on the  date  the Total  Commitments  have
      terminated,  no Letters of  Credit remain outstanding  and the Loans
      and  the Unpaid Drawings, together with interest, fees and all other
      obligations are paid in full;

      "Default  Rate"  shall  mean  the  rate  of  interest  calculated in
      accordance with Section 1.08(c) of the Credit Agreement;

      "Environmental  Approvals" means  all approvals,  licenses, permits,
      exemptions or authorization  required under applicable Environmental
      Laws;

      "Environmental Claims" means any  and all administrative, regulatory
      or judicial actions, suits, demands, demand letters, claims,  liens,
      notices of  noncompliance or  violation, investigations  (other than
      internal  reports prepared  by Holdings  or any of  its Subsidiaries
      solely in the ordinary course  of such Person's business and not  in
      response  to  any third  party  action or  request  of any  kind) or
      proceedings  relating in  any way  to any  Environmental Law  or any
      permit issued, or  any approval given, under any  such Environmental
      Law (hereafter,  "Claims"), including, without  limitation, (a)  any
      and  all  Claims  by  governmental  or  regulatory  authorities  for
      enforcement, cleanup, removal,  response, remedial or  other actions
      or damages pursuant to any applicable Environmental Law, and (b) any
      and  all Claims  by any  third party seeking  damages, contribution,
      indemnification,  cost recovery,  compensation or  injunctive relief
      resulting from Hazardous  Materials arising from  alleged injury  or
      threat of injury to health, safety or the environment;<PAGE>


      "Environmental Incident" means (i) any release of Hazardous Material
      from any of the Rigs, (ii) any incident in which  Hazardous Material
      is  released from  a vessel  other than  any of  the Rigs  and which
      involves collision between  the Rig  and such other  vessel or  some
      other incident of navigation or operation, in either case, where the
      Rig or the  Owner is  actually or  allegedly at  fault or  otherwise
      liable (in  whole  or  in  part) or  (iii)  any  incident  in  which
      Hazardous Material is  released from a vessel other  than any of the
      Rigs  and where  the Rig  is actually  or  potentially liable  to be
      arrested as a result and/or where the Owner is actually or allegedly
      at  fault or  otherwise liable  (and, in  each such  case, "release"
      shall mean  disposing,  discharging, injecting,  spilling,  leaking,
      leaching,  dumping, emitting,  escaping, emptying,  seeping, placing
      and the like,  into or upon any  land or water or air,  or otherwise
      entering into the environment);

      "Environmental Law" means any applicable Federal, state, foreign  or
      local statute, law, rule, regulation, ordinance, code, guide, policy
      and rule of common law  now or hereafter in effect and in  each case
      as  amended,  and  any  judicial  or  administrative  interpretation
      thereof,  including any  judicial  or administrative  order, consent
      decree  or judgment, relating to  the environment, health, safety or
      Hazardous    Materials,    including,   without    limitation,   the
      Comprehensive Environmental Response, Compensation and Liability Act
      of  1980, as amended, 42  U.S.C. Section 9601 ET  SEQ.; the Resource
      Conservation and Recovery Act, as amended, 42 U.S.C. Section 6901 ET
      SEQ.; the Federal Water Pollution Control Act, as amended, 33 U.S.C.
      Section  1251 ET SEQ.; the  Toxic Substances Control  Act, 15 U.S.C.
      Section 7401 ET  SEQ.; the Clean Air Act, 42  U.S.C. Section 7401 ET
      SEQ.; the Safe  Drinking Water Act, 42 U.S.C.  Section 3808 ET SEQ.;
      the Oil  Pollution Act of 1990,  33 U.S.C. Section 2701  ET SEQ. and
      any  applicable  state   and  local  or   foreign  counterparts   or
      equivalents;

      "Fees" shall have the same meaning for such term as set forth in the
      Credit Agreement;

      "Hazardous Materials" means (a) any petroleum or petroleum products,
      radioactive  materials, asbestos in any form that is or could become
      friable,  urea formaldehyde foam  insulation, transformers  or other
      equipment  that  contained,  electric  fluid  containing  levels  of
      polychlorinated  biphenyls,  and  radon  gas;  (b)  any   chemicals,
      materials  or substances defined as or included in the definition of
      "hazardous  substances,"  "hazardous waste,"  "hazardous materials,"
      "extremely  hazardous waste,"  "restricted hazardous  waste," "toxic
      substances," "toxic pollutants," "contaminants," or "pollutants," or
      words of similar import, under any applicable Environmental Law; and
      (c)  any other chemical, material or substance, exposure to which is
      prohibited, limited or regulated by any governmental authority;

      "Indemnitee" shall have the meaning set forth in Section 13.01;

      "Insurances" includes all policies and contracts of insurance (which
      expression  includes all entries of  each of the  Rigs in protection
      and indemnity associations) which are from time to time taken out or
      entered into  in  respect of  the  Rigs or  otherwise by  the  Owner
      (whether in the sole name of the  Owner or in the joint names of the<PAGE>


      Owner  and  the  Administrative  Agent)  and  all  benefits  thereof
      (including claims of whatsoever nature and return of premiums);

      "Interest Period" shall have the same  meaning for such term as  set
      forth in Section 1.09 of the Credit Agreement;

      "Letter of Credit" shall have the same meaning for such  term as set
      forth  in Section  2.01(a)  of  the  Credit  Agreement,  except  for
      purposes hereof "Letter of Credit" shall relate only to those issued
      at the request or for the benefit of Borrower C;

      "Loan(s)" shall  have the same meaning for such term as set forth in
      the Credit Agreement;

      "Major Casualty" means  any casualty to any  of the Rigs  in respect
      whereof  the  claim  or the  aggregate  of  the  claims against  all
      insurers,   before   adjustment  for   any  relevant   franchise  or
      deductible,  exceeds  Five  Hundred Thousand  United  States Dollars
      (US$500,000) or the equivalent in any other currency;

      "Note"  means  each promissory  note of  Borrower  C referred  to in
      Recital (C) hereto and in Section 1.05(a) of the Credit Agreement;

      "Obligations" shall have the meaning provided in Recital (E) hereto;

      "Oil Pollution Act 1990" means the Oil Pollution Act 1990 (33 U.S.C.
      Section 2701 ET SEQ.), as amended;

      "Other Rigs"  means, individually or  collectively, each of  (i) the
      jack-up  drilling unit ENSCO  68 owned by  Offshore documented under
      the laws  and flag  of the  United States of  America with  Official
      Number  574668; (ii)  the jack-up  drilling unit  ENSCO 81  owned by
      Offshore documented under the laws and  flag of the United States of
      America with Official Number 606512; (iii) the jack-up drilling unit
      ENSCO 82 owned by Offshore documented under the laws and flag of the
      United States of America with Official Number 602912; (iv) the jack-
      up drilling unit  ENSCO 83  owned by Offshore  documented under  the
      laws  and flag  of  the  United  States  of  America  with  Official
      Number 605536; (v)  the  jack-up drilling  unit  ENSCO 84  owned  by
      Offshore documented under the laws and flag of the  United States of
      America with Official Number 637544;  (vi) the jack-up drilling unit
      ENSCO 86 owned by Offshore documented under the laws and flag of the
      United States  of America  with  Official Number  643110; (vii)  the
      jack-up drilling  unit ENSCO 87  owned by Offshore  documented under
      the  laws and flag  of the  United States  of America  with Official
      Number  648969; (viii) the jack-up  drilling unit ENSCO  88 owned by
      Offshore  documented under the laws and flag of the United States of
      America  with Official Number 645637; (ix) the jack-up drilling unit
      ENSCO 89 owned by Offshore documented under the laws and flag of the
      United  States of America with Official Number 652440; (x) the jack-
      up drilling unit  ENSCO 90  owned by Offshore  documented under  the
      laws and flag  of the United States of  America with Official Number
      647859;  (xi) the jack-up drilling  unit ENSCO 93  owned by Offshore
      documented  under the laws and flag of  the United States of America
      with Official Number 651385;  (xii) the jack-up drilling  unit ENSCO
      94 owned  by  Offshore documented  under the  laws and  flag of  the
      United States  of America  with Official Number  638685; (xiii)  the<PAGE>


      jack-up drilling unit  ENSCO 95 owned  by Offshore documented  under
      the  laws and  flag of the  United States  of America  with Official
      Number 642112; (xiv)  the jack-up  drilling unit ENSCO  98 owned  by
      Offshore documented under  the laws and flag of the United States of
      America with Official Number 589096;  (xv) the jack-up drilling unit
      ENSCO 99 owned by Offshore documented under the laws and flag of the
      United States  of America  with  Official Number  682070; (xvi)  the
      drilling  barge  ENSCO  80   owned  by  ENSCO  Offshore  U.K.   Ltd.
      ("Offshore") documented under the laws  and flag of the Commonwealth
      of  the  Bahamas with  Official Number  724944; (xvii)  the drilling
      barge ENSCO 85 owned by Offshore  documented under the laws and flag
      of  the Commonwealth of the Bahamas with Official Number 724945; and
      (xviii) the  drilling barge  ENSCO 92  owned by Offshore  documented
      under  the laws  and flag  of the Commonwealth  of the  Bahamas with
      Official Number 724946;

      "Permitted Liens" shall have  the same meaning for such term  as set
      forth in the Credit Agreement.  

      "Protection and  indemnity risks" means  the usual risks  covered by
      protection  and  indemnity  associations  of   international  repute
      including the proportion  not recoverable in case of collision under
      the ordinary  running-down clause (unless such  is recoverable under
      the relevant hull and machinery coverage);

      "Requisition  Compensation" means all  moneys or  other compensation
      payable during the  Credit Facility Period by  reason of requisition
      for  title  or  other compulsory  acquisition  of  any  of the  Rigs
      otherwise than by requisition for hire;

      "Rigs" means the rigs  described in Recital (A) hereto  and includes
      any  share  or  interest  therein  and  their  respective   engines,
      machinery, boats, tackle,  outfit, spare gear,  fuel, consumable  or
      other  stores,  belongings and  appurtenances  whether  on board  or
      ashore and  whether now owned  or hereafter acquired  (but excluding
      therefrom any leased equipment owned by third parties);

      "Secured Creditors" shall  mean collectively  the Security  Trustee,
      the  Banks, the  Letter of  Credit Issuer  and the  Collateral Agent
      under and as defined in the Credit Agreement;

      "Security  Documents" shall have the  same meaning for  such term as
      set forth in the Credit Agreement;

      "Security  Interest"  means a  mortgage,  charge  (whether fixed  or
      floating),   pledge,   lien,   hypothecation,    assignment,   trust
      arrangement,   title  retention  or   other  security   interest  or
      arrangement of any kind whatsoever;

      "Subsidiary  Guaranty" shall have the  meaning for such  term as set
      forth in Whereas Clause (D);

      "Taxes" shall  have the same meaning  for such term as  set forth in
      the Credit Agreement;

      "Total Commitment" shall have the same meaning for  such term as set
      forth in the Credit Agreement;<PAGE>


      "Total Loss"  means (a) the actual,  constructive, arranged, agreed,
      or compromised Total  Loss of any  of the Rigs; (b)  the requisition
      for  title or other compulsory  acquisition or forfeiture  of any of
      the  Rigs otherwise than by  requisition for hire;  (c) the capture,
      seizure, arrest, detention or confiscation of any of the Rigs by any
      government or by  persons acting or purporting  to act on behalf  of
      any government unless the Rig or Rigs be released from such capture,
      seizure,  arrest or  detention  within thirty  (30)  days after  the
      occurrence thereof;

      "United States Dollars" and  "US$" means the lawful currency  of the
      United States of America;

      "Unpaid  Drawing" shall have the  same meaning for  such term as set
      forth in the Credit Agreement;

      "War Risks" includes the  risk of mines and all risks  excluded from
      the standard  form of English  marine policy by the  free of capture
      and seizure clause.

1.02  Except where  otherwise expressly  provided  or unless  the  context
      otherwise requires,  words and  expressions  defined in  the  Credit
      Agreement shall have the same meanings when used in this Mortgage.

1.03  In this Mortgage:

      (a)  Clause headings are inserted for convenience only and shall not
           affect the construction of this Mortgage and, unless  otherwise
           specified, all  references to Clauses  are to  clauses of  this
           Mortgage;

      (b)  unless  the context  otherwise  requires,  words  denoting  the
           singular number shall include the plural and vice versa;

      (c)  references   to   persons    include   bodies   corporate   and
           unincorporated;

      (d)  references  to assets  include property,  rights and  assets of
           every description;

      (e)  references to any document are to be construed as references to
           such document as amended or supplemented from time to time; and

      (f)  references to  any enactment include  re-enactments, amendments
           and extensions thereof.

2.    REPRESENTATIONS AND WARRANTIES
      ------------------------------
2.01  The Owner  hereby represents  and warrants  to the Security  Trustee
      that:

      (a)  the Owner lawfully owns  and is lawfully possessed of  the Rigs
           free from any Security Interest (except for Permitted Liens and
           the lien of this Mortgage), and the Owner warrants that it will
           defend its title  and possession in each of the  Rigs and every
           part thereof  for the benefit  of the Security  Trustee against
           the claims and demands of all persons whomsoever arising as the<PAGE>


           result of  any  liens,  charges  or  encumbrances,  other  than
           Permitted Liens; 

      (b)  the   Owner  is  duly  organized  and  is  now  existing  as  a
           corporation  under the laws of  the State of  Delaware and will
           remain so during the term of this Mortgage;

      (c)  the Owner  is duly  qualified as  a  Liberian Foreign  Maritime
           Entity  under  the laws  of the  Republic  of Liberia  and will
           remain so during the term of this Mortgage;

      (d)  the Owner has full power and authority (i)  to register each of
           the Rigs  in its name under the  Liberian flag, (ii) to execute
           and deliver this Mortgage,  (iii) to mortgage each of  the Rigs
           as security for  the Obligations  and (iv) to  comply with  the
           provisions of,  and perform  all  its obligations  under,  this
           Mortgage;

      (e)  the  Owner will not cause or permit  the Rigs to be operated in
           any  manner contrary to applicable  law and the  Owner will not
           engage in any unlawful  trade or violate any  law or carry  any
           cargo that  may  expose  the Rigs  to  penalty,  forfeiture  or
           capture or otherwise operate the Vessels in any way which might
           jeopardize  the Security Trustee's  security in the  Rigs.  The
           Owner will  not do, or  suffer or permit  to be done,  anything
           which  can  or  may  injuriously  affect  the  registration  or
           enrollment  of the Rigs under  the laws and  regulations of the
           Republic of Liberia  and will at all  times keep the Rigs  duly
           documented thereunder.  

      (f)  the  Owner  has taken  all  necessary action  to  authorize the
           execution and  delivery of  the  Subsidiary Guaranty  and  this
           Mortgage, and  this Mortgage constitutes, the  legal, valid and
           binding obligation  of the Owner enforceable  against the Owner
           in accordance with its  terms (except to the extent  limited by
           applicable  bankruptcy, reorganization,  insolvency, moratorium
           or other laws of  general application relating to  or affecting
           the  enforcement of creditors' rights  as from time  to time in
           effect and general  equitable principles) and  when filed  with
           the Office of  the Deputy Commissioner  of Maritime Affairs  of
           the  Republic  of Liberia,  New York,  New  York will  create a
           legal,  valid and  enforceable  first preferred  fleet mortgage
           lien on each of the Rigs; and

      (f)  on  and after the Restatement Effective Date (as defined in the
           Credit Agreement), each of the Security  Documents to which the
           Owner  is a  party  creates, as  security  for the  Borrower  C
           Obligations  (in  this paragraph  2.01(f),  as  defined in  the
           Credit Agreement) purported  to be secured thereby, a valid and
           enforceable perfected security interest in and Lien (as defined
           in the  Credit  Agreement) on  all  of the  Collateral  subject
           thereto,  to the  extent perfection of  a security  interest or
           Lien  is governed  by Article  8 or  Article 9  of the  UCC (as
           defined in the  applicable Security Documents), or  Title 22 of
           the Liberian Code  of Laws of 1956, as amended,  and subject to
           no  other Liens (except that  the Collateral may  be subject to
           Permitted  Liens), in favor of the Collateral Agent (as defined<PAGE>


           in the Credit Agreement)  or the Security Trustee, as  the case
           may be, for the benefit of the Banks.  No filings or recordings
           are required in order to perfect the Security Interests created
           under any Security  Document except for  filings or  recordings
           required in connection  with any such  Security Document  which
           shall have  been made upon or  prior to (or are  the subject of
           arrangements,  satisfactory  to the  Administrative  Agent, for
           filing on or promptly  after the date of ______)  the execution
           and delivery thereof.

2.02  The  representations  and  warranties  of  the  Owner  set   out  in
      Clause 2.01 shall survive  the execution of this Mortgage  and shall
      be deemed to be repeated at the time of the making of each  Loan and
      at the time  of the issuance of each Letter  of Credit, with respect
      to the  facts and  circumstances existing at  each such time,  as if
      made at each such time.

3.    MORTGAGE
      --------
3.01  In  order to secure the Obligations, the Owner has granted, conveyed
      and  mortgaged and does by these presents grant, convey and mortgage
      unto the  Security Trustee,  its successors  and assigns, the  whole
      (100%) of each  of the Rigs  TO HAVE AND TO  HOLD the same  unto the
      Security Trustee, its successors and  assigns upon the terms  herein
      set forth for the enforcement of the Obligations.

      Provided only  and the condition of  these presents is such  that if
      all of the Obligations  secured by this Mortgage have  terminated or
      have been  performed in full as  and when the same  shall become due
      and payable in accordance  with the terms  of this Mortgage and  the
      Owner and its successors  and assigns shall observe and  comply with
      the  covenants,  terms and  conditions  contained  in this  Mortgage
      expressed or implied to be performed, all without delay or fraud and
      according  to  the  true  intent  and  meaning  thereof,  then these
      presents and  the rights  hereunder shall  cease,  determine and  be
      void, otherwise  to be and remain  in full force and  effect and, in
      such event, the Security Trustee agrees to execute and record at the
      expense of the Owner, all such documents as the Owner may reasonably
      require to discharge this Mortgage.

      Notwithstanding anything to  the contrary herein it  is not intended
      that any provision of this Mortgage shall waive the preferred status
      of this Mortgage and  that if any provision  or part thereof  herein
      shall  be construed as waiving the preferred status of this Mortgage
      then such provision shall to such extent be void and of no effect.

3.02  The Owner shall remain liable to perform all the obligations assumed
      by it  in relation to  the Rigs  and none of  the Secured  Creditors
      shall  be under  any obligation  of any  kind whatsoever  in respect
      thereof or be  under any liability  whatsoever in  the event of  any
      failure by the Owner to perform its obligations in respect thereof.

3.03  On the date on which the Credit Agreement, all Letters of Credit and
      the Subsidiary Guaranty  have been terminated, when  no Note remains
      outstanding and all Obligations  as they relate to Borrower  C shall
      have  been irrevocably paid in full,  this Mortgage shall terminate,
      and the Security  Trustee at the  request and expense of  the Owner,<PAGE>


      will  execute  and  deliver to  the  Owner  a  proper instrument  or
      instruments acknowledging the  satisfaction and termination  of this
      Mortgage,  and will duly assign,  transfer and deliver  to the Owner
      (without recourse  and without any representation  or warranty) such
      of each of the Rigs as may remain in the  possession of the Security
      Trustee together with  any moneys at the  time held by the  Security
      Trustee hereunder.

4.    PAYMENT COVENANTS
      -----------------
4.01  The Owner hereby covenants with the Secured Creditors:

      (a)  to  pay  and indemnify  the  Secured  Creditors  for  all  such
           expenses,  claims, liabilities,  losses,  costs, duties,  fees,
           charges or other  moneys as are stated  in this Mortgage  to be
           payable by  the Owner to or  recoverable from the Owner  by the
           Secured Creditors (or in  respect of which the Owner  agrees in
           this Mortgage to indemnify any of the Secured Creditors) at the
           times and in the manner specified in this Mortgage;

      (b)  to pay  interest on  any  such expenses,  claims,  liabilities,
           losses, costs,  duties, fees, charges or  other moneys referred
           to  in Clause 4.01(a) as paid by the Secured Creditors from the
           date on which  demand is made  by any Secured  Creditor as  the
           case  may be, for payment by the Owner of the relevant expense,
           claim, liability,  loss, cost, duty, fee, charge or other money
           incurred  by  any  Secured  Creditor for  which  the  Owner  is
           responsible (both before  and after any  relevant judgment)  at
           the Default Rate; and

      (c)  to pay and perform its  obligations which may be or  become due
           or  owing to any Secured  Creditor under this  Mortgage and the
           other Credit  Documents to which  the Owner  is or is  to be  a
           party  at the  times  and in  the  manner specified  herein  or
           therein.

5.    PRESERVATION OF SECURITY
      ------------------------
5.01  It is declared and agreed that:

      (a)  the  security created  by this  Mortgage shall  be held  by the
           Security Trustee  as a continuing security  for the performance
           of the Obligations and  that the security so created  shall not
           be satisfied by any intermediate payment or satisfaction of any
           part of the Obligations;

      (b)  the security so created  shall be in addition to  and shall not
           in  any way  be prejudiced  or  affected by  any  of the  other
           Security Documents;

      (c)  except   as  otherwise  specifically  provided  in  the  Credit
           Agreement  or  other Security  Documents, the  Security Trustee
           shall not have to wait  for the Collateral Agent, the  Banks or
           the  Letter  of  Credit Issuer  to  enforce  any  of the  other
           Security  Documents before  enforcing the  security created  by
           this Mortgage;<PAGE>


      (d)  no  delay or omission  on the part  of the  Security Trustee in
           exercising any right, power or remedy under this Mortgage shall
           impair  such right, power or remedy or be construed as a waiver
           thereof  nor shall any single  or partial exercise  of any such
           right, power or remedy preclude any further exercise thereof or
           the exercise of any other right, power  or remedy.  The rights,
           powers and remedies  provided in this  Mortgage are  cumulative
           and not exclusive of  any rights, powers and remedies  provided
           by  law and may be exercised from  time to time and as often as
           the Security Trustee may deem expedient; and

      (e)  any  waiver  by  the Security  Trustee  of  any  terms of  this
           Mortgage or  any consent  given by  the Security Trustee  under
           this Mortgage shall only  be effective if given in  writing and
           then only  for the purpose and  upon the terms for  which it is
           given.

5.02  Any settlement or discharge under this Mortgage between the Security
      Trustee  and  the Owner  shall be  conditional  upon no  security or
      payment to  the Secured  Creditors  or any  of  them by  the  Credit
      Parties (as defined  in the  Credit Agreement) or  any other  person
      being avoided or  set-aside or ordered to be refunded  or reduced by
      virtue  of  any  provision  or  enactment  relating  to  bankruptcy,
      insolvency, administration  or liquidation  for  the time  being  in
      force  and, if such condition is not satisfied, the Security Trustee
      shall be entitled  to recover from the Owner on  demand the value of
      such  security  or  the  amount  of any  such  payment  as  if  such
      settlement or discharge had not occurred.

5.03  The  rights of  the Secured  Creditors under  this Mortgage  and the
      security hereby  constituted  shall  not be  affected  by  any  act,
      omission,  matter or  thing  which, but  for  this provision,  might
      operate  to impair, affect or discharge such rights and security, in
      whole or in part,  including without limitation, and whether  or not
      known  to  or  discoverable  by  the  Credit  Parties,  the  Secured
      Creditors or any other person:

      (a)  any time or  waiver granted to the Credit Parties  or any other
           person; or

      (b)  the  taking, variation,  compromise, renewal  or release  of or
           refusal or neglect to perfect  or enforce any rights,  remedies
           or  securities against any of  the Credit Parties  or any other
           persons; or

      (c)  any   legal   limitation,  disability,   incapacity   or  other
           circumstances  relating  to the  Credit  Parties  or any  other
           person; or

      (d)  any amendment or supplement to the Credit Agreement, any of the
           other Credit Documents (other than this Mortgage)  or any other
           document or security; or

      (e)  the dissolution, liquidation,  amalgamation, reconstruction  or
           reorganization  of  any  of the  Credit  Parties  or any  other
           person; or<PAGE>


      (f)  the   unenforceability,  invalidity   or  frustration   of  any
           obligations  of any of the  Credit Parties or  any other person
           under the Credit  Agreement, any of the other  Credit Documents
           (other than this Mortgage) or any other document or security.


6.    INSURANCE
      ---------
6.01  The Owner covenants with the  Security Trustee throughout the Credit
      Facility Period that:

      (a)  The Owner  shall, at its own  expense, when and so  long as any
           Obligations remain  outstanding, insure the Rigs  and keep each
           of them  insured, or cause  the Rigs to  be insured, in  lawful
           money of the  United States,  in such amounts,  for such  risks
           (including  without  limitation,  hull and  machinery/increased
           value, protection and indemnity risks, pollution liability, War
           Risks  (subject to  subparagraph (vii)  below) and  in addition
           such  other  risks  which  would  be  covered  by  experienced,
           prudent,  and responsible  companies  engaged  in the  offshore
           contract  drilling   of  hydrocarbons  in   places  and   under
           conditions  comparable to those in  which the Rigs are employed
           from time  to  time  and  possessing  financial  and  operating
           characteristics similar to  those of the  Owner (herein  called
           "Similar   Companies"),   in  such   form   (including  without
           limitation,  the form  of  the  loss  payable  clause  and  the
           designation of  named  assureds)  and  with  such  first  class
           insurance  companies,  underwriters,  funds,  mutual  insurance
           associations or  clubs, as shall be  reasonably satisfactory to
           the  Administrative Agent.  With respect to hull and machinery/
           increased value insurance, including war risk, the Owner  shall
           insure the Rigs  and keep  each of them  insured, or cause  the
           Rigs to  be insured, for an amount which is when such amount is
           aggregated with the  amount of such  insurance coverage on  the
           Other  Rigs, such aggregate amount  shall be not  less than the
           greater of (i) 125% of the Total Commitment and (ii) the amount
           of  coverage that  would be  in the  range obtained  by Similar
           Companies on the Rigs and the Other Rigs.  Such insurance shall
           be  on  the  basis of  "new  for  old"  with  no deduction  for
           depreciation.   The Rigs shall  in no event  be insured  for an
           amount  less  than the  agreed valuation  as  set forth  in the
           applicable marine and war risk policies.  

             (i)  Full form  marine hull  and machinery  insurance extended
                  to insure against all risks of loss or damage,  including
                  but not  limited to  the risk  of loss  from blowout  and
                  cratering and against such risks and  in such form as are
                  approved by  the Security  Trustee and  are necessary  or
                  advisable for  the  protection  of  the interest  of  the
                  Security Trustee and the Shipowner in an amount not  less
                  than  the  greater  of  (A),  when  added  to  insurances
                  covering  the   Rigs  and   Other  Rigs,   125%  of   the
                  Commitments or (B) the amount of  coverage that would  be
                  within  the range obtained  by Similar  Companies on such
                  Rigs  and the Other Rigs.  The deductible or self-insured
                  retention  under the  policy shall  not exceed US$250,000
                  per  occurrence.    The  policies  shall  be endorsed  to<PAGE>


                  delete  the sue and  labor requirements as applied to the
                  Security Trustee  and to  provide coverage  for collision
                  and earthquake hazards; 

            (ii)  Full   form   marine   protection   and   indemnity   and
                  comprehensive  general liability insurance (including any
                  excess   liability  insurance),  including  coverage  for
                  contractual liability,  pollution liability,  contractual
                  and   legal   wreck   removal,   crew  coverage,   excess
                  collision,  salvage and  general  average,  care, custody
                  and  control  coverage.   Such  protection  and indemnity
                  insurance  shall  be  maintained  in the  broadest  forms
                  generally available  to similar Companies  in the  United
                  States,  London or Scandinavian  markets and  shall be in
                  an  amount not less than the greater of  (A) the range of
                  that    carried   by    similar    companies    and   (B)
                  US$200,000,000.     Said  policy   shall  not  include  a
                  deductible  or   self-insured  retention   in  excess  of
                  US$250,000 per  occurrence.  Such insurance shall include
                  a cross-liability endorsement; 

           (iii)  The Owner shall, at all times  during which the Rigs  are
                  operating within  the jurisdiction  of the  United States
                  of America, maintain insurance  or post bond  or maintain
                  approved   evidence  of   financial  responsibility  with
                  respect to the Rigs to cover  the actual cost of  removal
                  of discharged  oil which  the Owner  or the  Rigs may  be
                  held  strictly liable (or  held liable  due to negligence
                  of the Owner  or any  other Person) under the  applicable
                  Environmental Laws, or under  any other federal  or state
                  law which, in   the future, may  apply to the Rigs or  to
                  the  Owner; and  the  Owner  shall maintain  insurance or
                  post   bond or  maintain approved  evidence of  financial
                  responsibility   covering  similar   pollution  risks  or
                  liabilities incident  thereto under  any law,  regulation
                  or  judicial  decision of  any  foreign  jurisdiction  or
                  jurisdictions    or   political    subdivision    thereof
                  applicable to the Owner, the Rigs or its operations;

            (iv)  Such workmen's compensation or  longshoremen's and harbor
                  workers'  insurance as  shall be  required by  applicable
                  law, including  endorsements for  Outer Continental Shelf
                  operations,  borrowed servant, voluntary compensation and
                  IN REM claims;

             (v)  Insurance (with a limit of  US$50,000,000 per occurrence)
                  naming  the Owner and  the Security  Trustee assureds and
                  loss  payees,  as their  interests  may  appear,  against
                  Operator's   Extra   Expense  ("O.E.E.")   liability   in
                  connection  with operations  conducted by  the Rigs  with
                  respect to Rigs operating  under a drilling contract with
                  a financially  responsible  operator  acceptable  to  the
                  Security  Trustee that  indemnifies against  such  O.E.E.
                  arising  out   of  blowout  (above   and  below  ground),
                  cratering,  redrilling/recompletion,  cost  of   control,
                  clean-up,  containment  seepage, pollution,  spillage  or
                  leakage in  connection with operations  conducted by  the<PAGE>


                  Rig, in form and  substance satisfactory to  the Security
                  Trustee, and third party  liabilities that may be assumed
                  by a  contract which is  legally enforceable  and in form
                  and  substance  satisfactory  to  the  Security  Trustee.
                  Deductibles or  self-insured retentions shall not  exceed
                  US$250,000 and shall be for the account of the Owner;

            (vi)  Excess   seepage,  pollution,  clean-up  and  containment
                  liability  coverage in  the  amount  of US$50,000,000  in
                  respect   of  offshore   operations  in  excess   of  and
                  following    the   seepage,   pollution,   clean-up   and
                  containment  liability  coverage recited  in subparagraph
                  (v) above.

           (vii)  Subject to  the provisions  of this  subsection, War  and
                  Political  Risk  insurance  naming   the  Owner  and  the
                  Security  Trustee  as  assureds and  loss  payees,  which
                  shall be  maintained  in  the  broadest  forms  generally
                  available  to  Similar  Companies in  the  United States,
                  London  or   Scandinavian  markets,  and  shall   include
                  coverage for  War  Risk,  hull  and machinery,  War  Risk
                  protection  and indemnity,  confiscation,  expropriation,
                  nationalization,  deprivation  and inability  to  export.
                  Such insurance shall be  in amounts, with  deductibles or
                  self-insured retentions not to  exceed, the corresponding
                  policies described  in subparagraphs (i)  and (ii) above.
                  The  Shipowner   shall  obtain  and   maintain  War   and
                  Political  Risk Insurance  for  any  Rig operating  in an
                  area deemed to  be hostile by the Owner's underwriters or
                  protection and indemnity club; 

          (viii)  Upon  prior written  notice  to  the Owner,  the Security
                  Trustee  may  obtain  mortgagee's  interest insurance  or
                  breach of warranty endorsement  in favor of  the Security
                  Trustee  with  such   underwriters  and  under   form  of
                  policies  approved by the  Security Trustee  in an amount
                  equal  to at least  125% of  the Commitments.   The Owner
                  shall  reimburse the Security  Trustee, upon the Security
                  Trustee's   written  demand,  from  time   to  time,  the
                  reasonable costs  and expenses  incurred by the  Security
                  Trustee  in effecting  and maintaining  such  mortgagee's
                  interest insurance  on such terms and in such amounts and
                  with  such underwriters  as  the Security  Trustee  shall
                  deem appropriate; and

            (ix)  Upon  prior written  notice  to  the Owner,  the Security
                  Trustee   may   obtain  an   Additional  Perils-Pollution
                  endorsement   covering   the  possible   consequences  of
                  pollution   involving   the   Rigs   including,   without
                  limitation, the  risk of  expropriation or  sequestration
                  of any Rig  or the imposition of a lien or encumbrance of
                  any kind having priority  over this Mortgage.   The Owner
                  shall  reimburse the Security Trustee,  upon the Security
                  Trustee's  written   demand,  from  time   to  time,  the
                  reasonable costs  and expenses incurred  by the  Security
                  Trustee  in effecting and  maintaining on  such terms and
                  in  such   amounts  and  with   such  underwriters   such<PAGE>


                  Additional  Perils-Pollution  insurance coverage  as  the
                  Security Trustee shall deem appropriate.

      (b)  The Owner will furnish  the Security Trustee from time  to time
           on request and,  in any  event, at least  annually, a  detailed
           report  signed  by  a  firm  of  marine  insurance  brokers  or
           insurance  companies acceptable  to  the Security  Trustee with
           respect to  the insurance carried  and maintained on  each Rig,
           together  with  their opinion  that  the  insurance carried  is
           sufficient  in   that  it  is  customary   insurance  which  an
           experienced broker would effect  in similar circumstances  with
           Similar Companies and that,  in the opinion of the  brokers, it
           complies  with  the provisions  of  this Section  6.01  and any
           requirements which the  Security Trustee may  have notified  to
           the Owner.  The Owner  will use its best efforts to  cause such
           firm to agree to  advise a responsible officer of  the Security
           Trustee  in writing promptly of  any default in  the payment of
           any  premium or call  and of any  other act or  omission on the
           part  of the Owner  of which it  has knowledge and  which might
           invalidate or  render unenforceable, in  whole or in  part, any
           insurance on any Rig. 

      (c)  Unless  the  Security   Trustee  shall  otherwise   agree,  all
           insurance for  the Rigs  shall  be placed  through  independent
           brokers of recognized  standing and with  clubs or first  class
           underwriters reasonably acceptable to the Security  Trustee and
           must (i) name the  Security Trustee as a named  assured (except
           as to the insurance referred to  in Section 6.01(a)(iv) above),
           but without liability for premiums, calls or assessments,  (ii)
           contain a  cancellation  clause  providing  that  the  insurers
           undertake not to  exercise any right of cancellation which they
           may have by reason of non-payment of premiums or calls when due
           without giving thirty (30) days'  prior written notice of  such
           cancellation to  a responsible officer of  the Security Trustee
           and an opportunity of  paying any such unpaid premium  or call,
           (iii) if possible, based on the Owner's best efforts, contain a
           provision that the  insurance will not  be permitted to  lapse,
           terminate or  be materially modified without  thirty (30) days'
           prior  written notice being  given to a  responsible officer of
           the Security Trustee (except as to the insurance referred to in
           Section 6.01(a)(ii) and (v) above for which fourteen (14) days'
           prior  written notice shall  be required  and (iv)  contain the
           agreement of  the insurer  that  any loss  thereunder shall  be
           payable to the trustee notwithstanding any action, inaction  or
           breach of  representation or warranty  by the Owner,  except to
           the  extent provided by subsection (d) hereof.  The Owner shall
           not  change underwriters or clubs  as to any  insurance for the
           Owner without prompt written notice to a responsible officer of
           the Security Trustee of any such change. 

      (d)  All amounts of  whatsoever nature payable  under any  insurance
           shall be payable to the Security Trustee for distribution first
           to itself, the Secured Creditors, the Co-Agents and  thereafter
           to  the  Owner  or  others   as  their  interests  may  appear.
           Nevertheless, until otherwise required  by the Security Trustee
           by notice  to the underwriters,  (i) amounts payable  under any
           insurance  on  the Rigs  with  respect  to  the protection  and<PAGE>


           indemnity  risks  shall  be  paid  directly  to  the  Owner  to
           reimburse it for any loss, damage or expense incurred by it and
           covered  by such  insurance  or  to  the  person  to  whom  any
           liability covered by such insurance has been incurred, and (ii)
           amounts payable  under any insurance  with respect to  the Rigs
           involving  any damage to any Rigs not constituting an actual or
           constructive total  loss, shall  be  paid by  the  underwriters
           directly for  the repair, salvage or other charges involved or,
           if the Owner shall have first fully repaired the damage or paid
           all of the salvage  or other charges, or  irrevocably committed
           to  do  so,  shall  be  paid  to  the  Owner  as  reimbursement
           therefore, PROVIDED,  no amount  in excess of  an aggregate  of
           US$2,000,000  per incident  shall be  paid from  any insurances
           without the prior written consent of the Security Trustee. 

      (e)  In  the event  of an  actual or  constructive total  loss or  a
           compromised constructive total loss or requisition of any  Rig,
           all insurance  payments or compensation therefor  shall be paid
           to  the  Security  Trustee  and  applied to  reduce  the  Total
           Commitment  in accordance  with  and subject  to  the terms  of
           Section  3.03(c) and/or (d) of the Credit Agreement.  The Owner
           shall not declare or agree with  underwriters that any Rig is a
           constructive  or compromised,  agreed or  arranged constructive
           total  loss without the  prior written consent  of the Security
           Trustee. 

      (f)  In the  event of an  actual or  constructive total loss  of any
           Rig, the Security  Trustee shall  retain out  of the  insurance
           payments  received  on account  of such  loss  and held  by the
           Security Trustee  in accordance with the  Credit Agreement, any
           sum  or sums  that shall  be or  become  owing to  the Security
           Trustee under this Mortgage for the cost, if any, of collecting
           the insurance, which sum or sums shall become the sole property
           of the Security Trustee, and  pay the balance to the Banks  for
           application pursuant  to and subject to  Section 3.03(c) and/or
           (d) of the Credit Agreement. 

      (g)  The Owner shall arrange for the execution of such guarantees as
           may  from  time  to time  be  required  by  any protection  and
           indemnity or war risks association.


7.    RIG COVENANTS
      -------------
7.01  The Owner  covenants with the  Security Trustee that  throughout the
      Credit Facility Period the Owner will:

      (a)  keep the Rigs documented in its name as Liberian vessels and to
           do or allow to  be done nothing whereby such  documentation may
           be forfeited or imperilled;

      (b)  not  without the  previous consent in  writing of  the Security
           Trustee,  which  consent  shall not  be  unreasonably withheld,
           make,  or permit  to  be  made,  any  change  in  the  physical
           characteristics  of  any Rig  which  would,  in the  reasonable
           judgment of the Security Trustee, materially interfere with the<PAGE>


           suitability of such rig for normal commercial offshore drilling
           operations; 

      (c)  the  Owner  will, without  cost  or  expense  to  the  Security
           Trustee,  (i)  maintain each  Rig  and  its machinery  in  such
           condition  and  repair as  will keep  the  Rig entitled  to the
           highest classification  in the American Bureau  of Shipping, or
           other  classification  society  of like  standing  approved  in
           writing by  the Security  Trustee for  such vessels,  (ii) keep
           each Rig, its machinery boilers, appurtenances and spare  parts
           in  a  good state  of repair,  wear  and tear  and depreciation
           excepted,  and in efficient  operating condition  in accordance
           with  good commercial  maintenance  practices  employed in  the
           offshore  oil and  gas contract  drilling industry,  (iii) keep
           each Rig tight, staunch, strong and in  all respects seaworthy,
           in so far as due diligence can make it, (iv)  maintain each Rig
           with   full  unexpired   classification   and  other   required
           certificates and (v) furnish  prior to December 1 of  each year
           to   the  Security   Trustee,  a   written  statement   of  the
           classification society  that any classification referred  to in
           clause (i) above is  in effect.  Except as  otherwise permitted
           by  the  Credit  Agreement,  each  Rig  shall,  and  the  Owner
           covenants that it will, at all times comply with all applicable
           laws, treaties and conventions of  the Republic of Liberia,  or
           to which the Republic of Liberia is a party, from  time to time
           in  effect, and  rules and  regulations issued  thereunder, and
           shall  have  on  board  as  and  when  required  thereby  valid
           certificates showing compliance therewith;

      (d)  at  all reasonable  times afford  the  Security Trustee  or its
           authorized representatives full and complete access to the Rigs
           during normal business hours for  the purpose of inspecting the
           Rigs and their cargoes  and papers, and the Owner  will deliver
           for inspection copies of such contracts and documents  relating
           to the  Rigs, whether on board or  not, as the Security Trustee
           may  reasonably   request,  provided  however,  that   (i)  all
           information not  on file with any  Governmental Agency obtained
           by  the  Security  Trustee  pursuant  to  any  Credit  Document
           concerning the  Owner,  the  Rigs,  the  other  assets  or  the
           financial condition of  the Owner and  prospects shall be  kept
           confidential  by  the  Security Trustee  subject,  however,  to
           requests from  the Banks, any  applicable governmental Agencies
           and  to  disclosures  of  such  information  to  assignees  and
           participants (and potential assignees and participants of which
           the Banks notify  the Security Trustee) pursuant  to the Credit
           Agreement,  unless  such non-governmental  parties  shall agree
           prior  thereto to be bound by this Section 6.01(d) and (ii) any
           inspection of  the  Rigs, their  cargoes  and papers  shall  be
           subject  to the requirements of  any operators of  the Rigs and
           any applicable Governmental Agencies.   All reasonable expenses
           incurred  by   the   Security   Trustee   or   its   authorized
           representatives in  the exercise  of  its right  of  inspection
           hereunder shall be promptly paid by the Owner; 

      (e)  not transfer or change the flag or port of documentation of any
           of the Rigs without the written consent of the Security Trustee
           first  hand and obtained, and  any such written  consent to any<PAGE>


           one transfer or change  of flag or port of  documentation shall
           not be construed to be a waiver of this provision  with respect
           to any subsequent proposed  transfer or change of flag  or port
           of documentation; 

      (f)  not  sell, bareboat charter,  transfer or  mortgage any  of the
           Rigs other than to Holdings and its Subsidiaries (as defined in
           the  Credit  Agreement), without  the  written  consent of  the
           Security Trustee,  which  consent  shall  not  be  unreasonably
           withheld.  Any such  written consent to any one  sale, bareboat
           charter,  mortgage or transfer shall  not be construed  to be a
           waiver  of  this  provision  with  respect  to  any  subsequent
           proposed  sale, bareboat  charter, mortgage  or transfer.   Any
           such sale,  bareboat charter, transfer  or mortgage of  any Rig
           shall be subject  to the  provisions of this  Mortgage and  the
           lien thereof, and shall not affect the liabilities of the Owner
           hereunder;
 
      (g)  promptly pay  and discharge all debts,  damages and liabilities
           whatsoever which have  given or  may give rise  to maritime  or
           possessory liens  (other than  Permitted  Liens) on  or  claims
           enforceable against  the  Rigs  and  all  tolls,  dues,  taxes,
           assessments, governmental charges, fines and penalties lawfully
           charged on or  in respect of  the Rigs and all  other outgoings
           whatsoever in respect of the Rigs and in the event of arrest of
           the  Rigs pursuant  to legal  process, or  in the event  of the
           detention  of any of the Rigs in exercise or purported exercise
           of any such lien or claim as  aforesaid, procure the release of
           the  Rigs,  as  appropriate,  from  such  arrest  or  detention
           forthwith upon receiving  notice thereof by  providing bail  or
           otherwise as the circumstances may require;

      (h)  not employ  the Rigs or allow the employment of any of the Rigs
           in  any trade or  business which is unlawful  under the laws of
           any relevant jurisdiction or in carrying illicit or  prohibited
           goods or in any  manner whatsoever which may render  any of the
           Rigs liable to destruction, seizure or  confiscation and in the
           event of hostilities  in any part of the world  (whether war be
           declared or not) not  employ the Rigs or suffer  the employment
           of any of the Rigs in carrying any contraband goods or to enter
           or  trade to  any zone  which  is declared  a war  zone by  any
           government  or by  the War  Risks insurers  of the  Rigs unless
           there  shall have been effected  by the Owner  (at its expense)
           such  special, additional  or modified  insurance cover  as the
           Administrative Agent may require;

      (i)  notify both  the Security Trustee and  the Administrative Agent
           forthwith by telecopy, thereafter confirmed by letter of:

             (i)  any casualty to any of the Rigs which is or is likely  to
                  be a Major Casualty, and

            (ii)  any occurrence  in consequence  whereof any  of the  Rigs
                  has become  or is, by the  passing of  time or otherwise,
                  likely to become a Total Loss, and<PAGE>


           (iii)  any requirement or recommendation  made by any insurer or
                  classification  society  or by  any  competent  authority
                  which is  not complied with  within the  time provided by
                  such   insurer,   classification  society   or  competent
                  authority, including any extensions granted thereby, and

            (iv)  any  arrest  of  any  of  the  Rigs  or  the  exercise or
                  purported exercise of any lien  on any of the Rigs or any
                  requisition of any of the Rigs for hire; 

      (j)  place, and  use due diligence  to retain, a  properly certified
           copy of this Mortgage on board each of the Rigs with the papers
           and  cause such certified copy of this Mortgage to be exhibited
           to  any and  all persons  having business  with the  Rigs which
           might give  rise to  any lien  thereon other  than  a lien  for
           crew's  wages,  general   average  and  salvage   and  to   any
           representative of the Security  Trustee on demand and to  place
           and keep prominently  displayed in  the chart room  and in  the
           master's cabin of  each of the Rigs a  framed printed notice in
           plain  type in  English  of such  size  that the  paragraph  of
           reading matter shall cover  a space not less than 6 inches wide
           and 9 inches high reading as follows:

                                "NOTICE OF MORTGAGE
                                -------------------
           This  Rig is  covered by  a First  Preferred Fleet  Mortgage to
           CHRISTIANIA BANK  OG KREDITKASSE, NEW YORK  BRANCH, as Security
           Trustee  for  the  Banks defined  in  the  said Mortgage  under
           authority of Title 22 of the  Liberian Code of Laws of 1956, as
           amended.   Under  the terms  of the  said Mortgage  neither the
           Owner nor  any charterer  nor the  master of this  Rig nor  any
           other person has any right, power or authority to create, incur
           or permit to be imposed upon this Rig any lien whatsoever other
           than for crew's wages, general average and salvage."

      (k)  shall not cause or permit the Rigs to be operated in any manner
           contrary to law, shall not abandon  the Rigs in a foreign port,
           shall not engage  in any unlawful trade  or violate any law  or
           carry  any  cargo  that  shall  expose  the  Rigs  to  penalty,
           forfeiture or capture, and shall not do, or suffer or permit to
           be done,  anything  which can  or  may injuriously  affect  the
           registration  or enrollment of the  Rigs under the  laws of the
           United  States and  will  at  all  times  keep  the  Rigs  duly
           documented thereunder;

      (l)  notify  both  the  Security  Trustee  and Administrative  Agent
           forthwith by  telecopy, thereafter  confirmed  by letter  if  a
           libel  be filed  against any  Rig or  if any  Rig is  otherwise
           attached,  levied upon or taken  into custody by  virtue of any
           legal   proceeding  in  any  court,  tribunal  or  governmental
           authority (de jure  or de facto), or if  any Rig suffers damage
           in  excess of  US$500,000, in  the case  of  any such  libel or
           attachment, within thirty (30)  days will cause said Rig  to be
           released by posting bond, posting alternative security or other
           means and all liens thereon to be discharged, and will promptly
           notify the Security Trustee thereof in the manner aforesaid.<PAGE>


8.    PROTECTION OF SECURITY
      ----------------------
8.01  The Security Trustee shall without prejudice to its other rights and
      powers  under  this Mortgage  and  the  other  Credit  Documents  be
      entitled  (but  not bound)  at  any  time and  as  often  as may  be
      necessary  to  take any  such  action as  it may  in  the reasonable
      exercise of its discretion  think fit for the purpose  of protecting
      or maintaining the security  created by this Mortgage and  the other
      Credit Documents  (including, without limitation, such  action as is
      referred to in Clause 8.02)  and each and every  expense, liability,
      or  loss (including, without limitation, legal  fees) so incurred by
      the Secured Creditors in  or about the protection or  maintenance of
      the  said  security together  with  interest  payable thereon  under
      Clause 4.01(b) shall be repayable to it by the Owner on demand.

8.02  Without prejudice to the generality of Clause 8.01:

      (a)  if the Owner does not comply with the provisions of Clause 6 or
           any of them,  the Administrative Agent  shall be entitled  (but
           not bound)  to effect or to replace and renew and thereafter to
           maintain  the Insurances in such manner as in its discretion it
           may think fit and  to require that all policies,  contracts and
           other records relating to the Insurances (including details  of
           any correspondence concerning outstanding claims)  be forthwith
           delivered  to  such brokers  as  the  Administrative Agent  may
           nominate and  to collect, recover,  compromise and give  a good
           discharge for all claims then outstanding or thereafter arising
           under  the  Insurances or  any  of  them and  to  take  over or
           institute (if necessary using  the name of the Owner)  all such
           proceedings in connection therewith as the Administrative Agent
           in  its absolute  discretion may  think fit  and to  permit the
           brokers through whom the collection  or recovery is effected to
           charge the usual brokerage therefor; and

      (b)  if  the Owner  does not  comply with  the provisions  of Clause
           7.01(c) the Security Trustee shall  be entitled (but not bound)
           to  arrange  for the  carrying out  of  such repairs  to and/or
           surveys of the Rigs as it deems expedient or necessary; and

      (c)  if  the Owner  does not  comply with  the provisions  of Clause
           7.01(g) the Security Trustee shall  be entitled (but not bound)
           to  pay and discharge  all such debts,  damages and liabilities
           and all  such tolls, dues, taxes,  assessments, charges, fines,
           penalties and  other outgoings as are  therein mentioned and/or
           to  take any such measures  as it deems  expedient or necessary
           for the purpose of securing the release of the Rig  or Rigs, as
           the case may be.

9.    ENFORCEABILITY AND SECURITY TRUSTEE'S POWERS
      --------------------------------------------
9.01  Upon the  happening of any of the Events of Default specified in the
      Credit Agreement, and giving effect to any applicable grace  periods
      specified in the Credit Agreement, but without the necessity for any
      court order or declaration in any jurisdiction to the effect that an
      Event  of  Default has  occurred  the security  constituted  by this
      Mortgage  shall  become  immediately  enforceable  and  the Security
      Trustee shall be entitled, as and when  it may see fit, to put  into<PAGE>


      force  and exercise  all or  any of  the powers  possessed by  it as
      mortgagee of the Rigs or otherwise and in particular:

      (a)  to  exercise all  the rights  and remedies  in  foreclosure and
           otherwise given  to mortgagees by applicable  law including the
           provisions of the applicable provisions of Liberia law;

      (b)  to  take  possession of  any of  the  Rigs whether  actually or
           constructively and/or otherwise  to take control of  any of the
           Rigs wherever  such Rig or Rigs  may be and cause  the Owner or
           any  other person in possession  of such Rig  or Rigs forthwith
           upon demand  to  surrender the  same  to the  Security  Trustee
           without  legal process  and without  liability of  the Security
           Trustee  for any losses or  damages incurred by  such actual or
           constructive taking and  without having to  render accounts  to
           the Owner in connection therewith;

      (c)  to require that all policies, contracts, certificates of  entry
           and other records relating to the Insurances (including details
           of  and   correspondence  concerning  outstanding   claims)  be
           forthwith  delivered to or  to the order  of the Administrative
           Agent;

      (d)  to collect, recover, compromise and  give a good discharge  for
           or  procure  that  the Administrative  Agent  collect, recover,
           compromise  and give good discharge  for any and  all moneys or
           claims for moneys then outstanding or thereafter arising  under
           the Insurances or  any Requisition Compensation  and to  permit
           any brokers through whom collection or recovery is  effected to
           charge the usual brokerage therefor;

      (e)  to  take over or institute (if necessary  using the name of the
           Owner)   or,   to  the   extent   lawful,   procure  that   the
           Administrative   Agent  take   over  or   institute  all   such
           proceedings in connection with the Rigs, the Insurances, or any
           Requisition  Compensation  as  the   Security  Trustee  in  its
           absolute  discretion  thinks fit  and  to discharge,  compound,
           release or  compromise claims against  the Owner in  respect of
           the  Rigs which have  given or may  give rise to  any charge or
           lien on  the  Rigs  or  which are  or  may  be  enforceable  by
           proceedings against  the Rig  or  Rigs, provided  the  Security
           Trustee shall  act  in  a  commercially  reasonable  manner  in
           accordance  with   Section  9-504  of  the   New  York  Uniform
           Commercial Code;

      (f)  to sell any of the Rigs or any share therein  with prior notice
           to the  Owner free  from any claim  of or  by the Owner  of any
           nature whatsoever,  and  with or  without  the benefit  of  any
           charterparty  or other contract for  the employment of such Rig
           or  Rigs, by public auction  or private contract  at such place
           and upon such  terms (including, without  limitation, on  terms
           such  that payment  of some  or  all of  the purchase  price be
           deferred) as the  Security Trustee in  its absolute  discretion
           may determine  with power  to postpone  any such  sale, without
           being  answerable  for  any loss  occasioned  by  such sale  or
           resulting from postponement thereof, and/or itself to  purchase
           the Rig or Rigs, as the case may be, at any such public auction<PAGE>


           and to  set off the purchase  price against all or  any part of
           the Obligations; notice of such public auction or  private sale
           contract shall be given in the following manner:

             (i)  by publishing such  notice for ten consecutive days in  a
                  daily  newspaper  of  general  circulation  published  in
                  Dallas, Texas;

            (ii)  if the  place of sale should  not be  Dallas, Texas, then
                  also  by  publication of  a  similar  notice in  a  daily
                  newspaper, if any, published at the place of sale; and

           (iii)  by mailing a similar  notice to the  Owner on the day  of
                  first publication;

      (g)  to manage, insure, maintain and repair  the Rig or Rigs, as the
           case may be, and to  charter, employ, sail or lay up the Rig or
           Rigs, as the case may  be, in such manner, upon such  terms and
           for  such  period  as  the  Security Trustee  in  its  absolute
           discretion deems  expedient and for the  purposes aforesaid the
           Security  Trustee shall be entitled  to do all  acts and things
           incidental or conducive thereto and in particular to enter into
           such arrangements respecting the  Rig or Rigs, as the  case may
           be,   and  the  insurance,   management,  maintenance,  repair,
           classification, chartering  and employment of the  Rigs, in all
           respects as if  the Security Trustee were the owner of the Rigs
           and without being  responsible for any  loss thereby  incurred,
           except as expressly provided in Section 9.04 below;

      (h)  to recover from  the Owner on demand any  expenses, liabilities
           or losses  as may  be incurred  by the Security  Trustee in  or
           about  the exercise of the power vested in the Security Trustee
           under Clause 9.01(g);

      (i)  subject  to the terms of this Mortgage and the Credit Documents
           generally, to recover from  the Owner on demand each  and every
           expense, liability or loss incurred by  the Security Trustee in
           or about  or incidental  to the  exercise by it  of any  of the
           powers aforesaid.

9.02  The Security Trustee shall not be  obliged to make any enquiry as to
      the nature or sufficiency of  any payment received by it  under this
      Mortgage or to make any claim, take any action or enforce any rights
      and benefits assigned to the Security Trustee by this Mortgage or to
      which the Security Trustee may at any time be entitled hereunder.

9.03  Subject  to the proviso in  Section 9.04 below,  neither the Secured
      Creditors nor their agents, managers, officers, employees, delegates
      and  advisers shall  be liable  for any  expense,  claim, liability,
      loss, cost, damage or expense incurred or arising in connection with
      the  exercise  or  purported  exercise  of  any rights,  powers  and
      discretions under  this Mortgage in the absence  of gross negligence
      or wilful misconduct.

9.04  The Security Trustee shall not by reason of the taking possession of
      the  Rig or  Rigs, as the  case may be,  or be liable  to account as
      mortgagee-in-possession or for anything except actual receipts or be<PAGE>


      liable for any loss upon realization or for  any default or omission
      for  which  a  mortgagee-in-possession  might  be  liable  PROVIDED,
      HOWEVER, that  so long as the Owner shall not have abandoned the Rig
      or Rigs, if the  Security Trustee shall have become  a mortgagee-in-
      possession,  the  Owner shall  not be  liable  to third  parties for
      damages  or  losses arising  from and  after  the date  the Security
      Trustee becomes mortgagee-in-possession.

9.05  Upon any  sale  of any  of  the Rigs  or any  share  therein by  the
      Security Trustee the purchaser  shall not be bound to see or enquire
      whether the power of sale of  the Security Trustee has arisen in the
      manner provided  in this Mortgage and the sale shall be deemed to be
      within  the power  of the Security  Trustee and  the receipt  of the
      Security Trustee for the purchase money shall effectively  discharge
      the  purchaser who  shall  not  be  concerned  with  the  manner  of
      application of  the proceeds  of sale  or be  in any  way answerable
      therefor.

9.06  If  at  any time  after  an  Event  of Default  and  declaration  of
      acceleration   pursuant  to  this  Section  9,   and  prior  to  any
      foreclosure action having  been taken by the Security  Trustee under
      any  of the Credit Documents to foreclose upon the security provided
      by such documents, the Owner offers completely to cure all Events of
      Default  and  to  pay all  expenses,  advances  and  damages to  the
      Security Trustee consequent to such Events of Default, with interest
      at the rate provided for in Section 1.08(c) of the Credit Agreement,
      then  the Security  Trustee may  accept such  offer and  payment and
      restore  the Owner  to its  former position.   However,  such action
      shall  not  affect any  subsequent Event  of  Default or  impair any
      rights of the Security Trustee consequent thereto.

9.07  Immediately upon the occurrence  of an Event of  Default, or of  any
      event  which  with  the  notice  or lapse  of  time  or  both  would
      constitute an Event of Default, the owner shall notify a responsible
      officer  of  the  Security Trustee  of  such  occurrence  in writing
      setting  forth in  reasonable detail  the circumstances  surrounding
      such Event  of Default  or other  event and  what  action the  Owner
      proposes to take with respect thereto.

10.   APPLICATION OF MONEYS
      ---------------------
10.01 (a)  All moneys  received  by the  Security  Trustee (or  any  other
           Secured Creditor, as the case may be) in respect of sale of any
           of the Rigs  or any part thereof; in respect  of recovery under
           the  Insurances;  or in  respect  of  Requisition Compensation,
           shall, subject to the provisions of  Section 3.03(c) and/or (d)
           of the Credit Agreement, be applied in the following manner:

             (i)  first,  to the payment of all amounts  owing the Security
                  Trustee of the  type described in clauses (ii) and  (iii)
                  of Recital (E);

            (ii)  second,   to   the  extent   moneys   remain   after  the
                  application  pursuant  to  the preceding  clause  (i), an
                  amount equal to  the outstanding Obligations of  Borrower
                  C shall be paid to the  Secured Creditors as provided  in
                  Clause 10.01(c), with each Secured Creditor receiving  an<PAGE>


                  amount  equal to  such Obligations of Borrower  C held by
                  it or,  if the proceeds are  insufficient to  pay in full
                  all such  Obligations of Borrower  C, its  Pro Rata Share
                  (as  defined  below)  of   the  amount  remaining  to  be
                  distributed; and

           (iii)  to  the  extent   moneys  remain  after  the  application
                  pursuant  to the preceding  clauses (i),  (ii) and (iii),
                  and following the termination  of this Mortgage  pursuant
                  to  Clause 3.01, any surplus then remaining shall be paid
                  to  the Owner,  subject,  however, to  the rights  of the
                  holder of  any then existing  Lien of  which the Security
                  Trustee has actual notice (without investigation)

      (b)  For purposes of this Mortgage "Pro Rata Share" shall mean, when
           calculating a Secured Creditor's portion of any distribution or
           amount  in respect of any Obligations of Borrower C, the amount
           (expressed as a  percentage) equal to a  fraction the numerator
           of  which  is the  then unpaid  amount  of such  Obligations of
           Borrower C  owing to or held  by such Secured  Creditor and the
           denominator of which is the then outstanding amount of all such
           Obligations of  Borrower C.   For  purposes of determining  the
           amount payable  to each Secured Creditor,  the Security Trustee
           shall be entitled to request  each Secured Creditor to  furnish
           it with written notice of the amount of Obligations of Borrower
           C  then owed  to it  and shall  be entitled  to reply  upon the
           amounts stated therein in making such distribution.

      (c)  All payments required to be made to Secured Creditors hereunder
           shall  be made  to the  Administrative  Agent under  the Credit
           Agreement for the account of the Secured Creditors.

      (d)  For purposes  of applying payments received  in accordance with
           this Clause 10.01,  the Security Trustee  shall be entitled  to
           rely  upon  (i)  the  Administrative  Agent  under  the  Credit
           Agreement and (ii)  the Secured Creditors  for a  determination
           (which the  Administrative Agent and each  Secured Creditor, by
           their  acceptance of  the  benefits of  this Mortgage  shall be
           obligated to provide  upon request of the Security  Trustee) of
           the  outstanding Obligations of Borrower  C owed to the Secured
           Creditors.  Unless it has actual knowledge (including by way of
           written  notice from a  Secured Creditor) to  the contrary, the
           Administrative Agent under the  Credit Agreement, in furnishing
           information   pursuant  to  the  preceding  sentence,  and  the
           Security  Trustee, in  acting hereunder,  shall be  entitled to
           assume that  no obligations other than  principal, interest and
           regularly accruing fees are owing to any Secured Creditor.

11.   FURTHER ASSURANCES
      ------------------
11.01 The Owner shall execute and do all such assurances,  acts and things
      as the Security Trustee in its absolute discretion may require for:

      (a)  perfecting or  protecting the security created  (or intended to
           be created) by this Mortgage; or<PAGE>


      (b)  preserving  or  protecting any  of the  rights of  the Security
           Trustee, and  the other Secured Creditors  under this Mortgage;
           or

      (c)  ensuring that the security constituted by this Mortgage and the
           covenants and  obligations of  the  Owner under  this  Mortgage
           shall enure  to the  benefit  of any  transferee, successor  or
           assignee of the Security Trustee; or

      (d)  enforcing the security  constituted by this  Mortgage on or  at
           any time after the same shall have become enforceable; or

      (e)  the exercise of  any power, authority  or discretion vested  in
           the Security Trustee under this Mortgage,

      in any such case, forthwith upon  demand by the Security Trustee and
      at the expense of the Owner.

12.   POWER OF ATTORNEY
      -----------------
12.01 The Owner, by way of security and in order more fully to  secure the
      performance  of the  Obligations,  hereby  irrevocably appoints  the
      Security  Trustee as  its  attorney until  the  Total Commitment  is
      terminated  and none of  the Obligations remain  outstanding for the
      purposes of:

      (a)  doing  in  its name  all acts  and  executing, signing  and (if
           required) registering in its name all documents which the Owner
           itself could do, execute,  sign or register in relation  to the
           Rigs (including without  limitation, transferring title  to any
           of the Rigs  to a  third party), PROVIDED,  HOWEVER, that  such
           power shall not be  exercisable by or on behalf of the Security
           Trustee unless  an  Event of  Default specified  in the  Credit
           Agreement shall have occurred; and

      (b)  executing,   signing,  perfecting,  doing   and  (if  required)
           registering every such further assurance document, act or thing
           as is referred to in Clause 11.

12.02 The  exercise of such power as is  referred to in Clause 12.01(a) by
      or on  behalf  of the  Security  Trustee shall  not  put any  person
      dealing with the  Security Trustee  upon any enquiry  as to  whether
      this Mortgage has become enforceable nor shall such person be in any
      way affected by notice that this Mortgage has not become enforceable
      and, in relation to both Clauses 12.01(a) and 12.01(b), the exercise
      by the Security Trustee  of such power shall be  conclusive evidence
      of its right to exercise the same.

13.   INDEMNITIES
      -----------
13.01 Subject to the provisions of this Mortgage and the Credit Agreement,
      the  Owner  will indemnify  and save  harmless  each of  the Secured
      Creditors  and each agent or attorney appointed under or pursuant to
      this  Mortgage (each an "Indemnitee")  from and against  any and all
      expenses, claims,  liabilities, losses,  taxes, costs,  duties, fees
      and charges suffered, incurred  or made by such Secured  Creditor or
      such agent or attorney in good faith:<PAGE>


      (a)  in  the exercise or purported exercise of any rights, powers or
           discretions vested in them pursuant to this Mortgage; or

      (b)  in  the  preservation or  enforcement  of  the  rights  of  the
           Security Trustee under this Mortgage; or

      (c)  on the  release of the  Rigs from the security  created by this
           Mortgage,

      and the Secured Creditors and each such agent or attorney may retain
      and  pay all sums in respect of the same out of money received under
      the powers conferred by this Mortgage.  All such amounts recoverable
      by  such  Secured  Creditors or  such  agent  or  attorney shall  be
      recoverable on a full indemnity basis.

13.02 Without limiting  the  foregoing  Clause  13.01,  the  Owner  hereby
      further indemnifies and holds harmless each of the Secured Creditors
      and their respective officers,  directors, employees, attorneys  and
      agents   from  and   against  any   and  all   liabilities,  losses,
      obligations, claims, damages, penalties, causes of action, costs and
      expenses (including, without limitation, reasonable  attorneys' fees
      and expenses,  consultant fees,  investigation and  laboratory fees)
      imposed  upon or incurred  by or  asserted against  them, or  any of
      them,   by  reason  of   (a)  an   actual,  alleged   or  threatened
      Environmental Incident;  (b) any personal injury (including wrongful
      death) or  property damage  (real or  personal)  or economic  damage
      arising  out of or related  to such Environmental  Incident; (c) any
      Environmental Claim brought or threatened, or settlement reached; or
      (d) any  violation of  laws,  orders, regulations,  requirements  or
      demands  of government  authorities relating to  Hazardous Materials
      at, or discharged from any  of the Rigs, PROVIDED, HOWEVER,  that in
      the event that the  Security Trustee shall have become  a mortgagee-
      in-possession in  respect of one or  more of the Rigs  and the Owner
      shall not have abandoned such Rig or Rigs,  this indemnity shall not
      cover claims of  third parties  arising from or  after the  Security
      Trustee becomes mortgagee-in-possession.

13.03 If,  under any applicable law or regulation, and whether pursuant to
      a  judgment  being  made or  registered  against  the  Owner or  the
      liquidation of the Owner or for any other reason,  any payment under
      or in connection with this Mortgage is made or fails to be satisfied
      in  a currency (the "payment  currency") other than  the currency in
      which such payment is  due under or in connection with this Mortgage
      (the  "contractual currency"), then to the extent that the amount of
      such  payment  actually  received  by  the  Security  Trustee,  when
      converted into the  contractual currency  at the  rate of  exchange,
      falls short  of the  amount due  under  or in  connection with  this
      Mortgage, the Owner, as a separate and independent obligation, shall
      indemnify and hold  harmless the Security Trustee against the amount
      of such shortfall.  For the purposes  of this Clause 13.03, "rate of
      exchange" means  the rate at  which the Security Trustee  is able on
      the  date of  such payment  (or, if  it is  not practicable  for the
      Security  Trustee  to purchase  the  contractual  currency with  the
      payment  currency  on  the date  of  such  payment, at  the  rate of
      exchange  as  soon afterwards  as  is practicable  for  the Security
      Trustee  to do  so) to  purchase the  contractual currency  with the<PAGE>


      payment currency and shall  take into account any premium  and other
      costs of exchange with respect thereto.

14.   RIGHTS OF OWNER
      ---------------
14.01 Until an Event of Default shall have occurred, the Owner:

      (a)  shall be suffered and permitted to retain actual possession and
           use of the Rigs;

      (b)  subject to Section 8.02(b) of the Credit Agreement,  shall have
           the  right, from  time to  time in  its discretion  and without
           application to the  Security Trustee, and  without obtaining  a
           release thereof  by the Security  Trustee, to dispose  of, free
           from the  lien hereof, any boilers,  engines, machinery, masts,
           spars, sails, rigging, boats, anchors, chains, tackle, apparel,
           furniture,  fittings, drilling  equipment, pumps,  drill pipes,
           collars,  racking,   housing,   spare  parts   and   supporting
           inventory,  vehicles   or   living  quarters   or   any   other
           appurtenances of the Rigs.

15.   COMMUNICATIONS
      --------------
15.01 All notices  hereunder  shall be  made  pursuant to  the  Subsidiary
      Guaranty.

16.   ASSIGNMENTS
      -----------
16.01 This  Mortgage shall be binding upon  and shall enure to the benefit
      of   the  Owner,   the  Secured   Creditors  and   their  respective
      transferees, successors and permitted assigns and references in this
      Mortgage to any of them shall be construed accordingly.

16.02 The Owner  may not assign or transfer all or  any part of its rights
      and/or obligations under this Mortgage.

16.03 Pursuant to Section 12.04 of the Credit Agreement, each Bank has the
      right to  assign or transfer  all or any  part of its  rights and/or
      obligations  under  the  Credit  Agreement  on  the  terms   therein
      provided.   The  Security Trustee  shall notify  the  Owner promptly
      following any such assignment, transfer or change.

17.   TOTAL AMOUNT, ETC.
      ------------------
17.01 The  total amount of the direct or contingent obligations secured by
      this Mortgage is Fifty Million U.S. Dollars (US$50,000,000)  subject
      to the provisions  of Section  3.02(b) of the  Credit Agreement,  of
      principal  plus  interest,  fees,  commissions  and  performance  of
      mortgage covenants.  The interest of the Owner in the  Rigs is 100%.
      The  interest of the Security Trustee in the Rigs is 100%.  The date
      of maturity  is October 18,  2001, and the  discharge amount  is the
      same as the total amount plus such other sums as shall be payable by
      the Owner to the Banks under the Credit Agreement.

18.   MISCELLANEOUS
      -------------<PAGE>


18.01 If at any time any one or more of the provisions in this Mortgage is
      or becomes  invalid, illegal or  unenforceable in any  respect under
      any  law or regulation, the validity, legality and enforceability of
      the remaining provisions  of this Mortgage shall  not be in  any way
      affected or impaired thereby.

18.02 The  Security Trustee,  at  any time  and  from  time to  time,  may
      delegate by power  of attorney or in any other  manner to any person
      or persons all  or any  of the powers,  authorities and  discretions
      which are for  the time  being exercisable by  the Security  Trustee
      under this  Mortgage in relation to  the Rigs.  Any  such delegation
      may be made upon such  terms and subject to such regulations  as the
      Security Trustee  may think fit.  The  Security Trustee shall not be
      in any way liable or responsible to the Owner for any loss or damage
      arising from any act, default, omission or misconduct on the part of
      any such delegate.

18.03 A certification or determination  by the Security Trustee as  to any
      matter  provided for  in  this Mortgage  shall,  in the  absence  of
      manifest error, be conclusive and binding on the Owner.

18.04 If there is  a conflict between the provisions of  this Mortgage and
      the Credit Agreement, the Credit  Agreement shall govern except with
      respect to Section 19.01 below.

19.   JURISDICTION AND GOVERNING LAW
      ------------------------------
19.01 THIS  MORTGAGE  AND  ALL  ISSUES  ARISING IN  CONNECTION  WITH  THIS
      MORTGAGE SHALL BE GOVERNED  BY AND CONSTRUED IN ACCORDANCE  WITH THE
      LAWS OF THE REPUBLIC OF LIBERIA.

19.02 The  Owner agrees that the  Security Trustee shall  have the liberty
      but shall  not be obliged to  take any proceedings in  the courts of
      any country to protect  or enforce the security constituted  by this
      Mortgage and/or the Credit  Agreement and the Security Documents  or
      to  enforce  any  provisions  of this  Mortgage  and/or  the  Credit
      Agreement and the Security  Documents or to enforce  the Obligations
      and  for the  purpose of  any proceedings  for such  enforcement the
      Owner  hereby submits  to  the jurisdiction  of  the courts  of  any
      country of the choice of the Security Trustee.

19.03 Without  prejudice to the  generality of Clause  19.02, the Security
      Trustee  shall have the right to arrest  and take action against any
      or all of the Rigs at whatever place such Rig or Rigs shall be found
      lying and for the purpose  of any action which the Security  Trustee
      may bring before the  courts of such jurisdiction or  other judicial
      authority  and  for the  purpose of  any  action which  the Security
      Trustee may  bring against any or all of the Rigs, any writ, notice,
      judgment or other  legal process or documents may (without prejudice
      to any other method of service under  applicable law) be served upon
      the respective  master of such Rig or Rigs (or upon anyone acting as
      the  master) and such  service shall be  deemed good service  on the
      Owner for all purposes.

19.04 The  Owner agrees  that should  the Security  Trustee bring  a legal
      action  or proceedings against  it or its assets  in relation to any
      matters  arising  out of  or in  connection  with this  Mortgage, no<PAGE>


      immunity  from  such legal  action  or proceedings  (which  shall be
      deemed  to include,  without limitation,  suit, attachment  prior to
      judgment, other attachment, the obtaining of judgment, execution  or
      other enforcement) shall be claimed by or on behalf of  the Owner or
      with  respect of its assets, and the Owner hereby irrevocably waives
      any such right of  immunity which it  or its assets  now has or  may
      hereafter acquire and the Owner hereby consents generally in respect
      of any legal  action or proceedings arising out  of or in connection
      with this Mortgage to the  giving out of any relief  or the issue of
      any process in connection with such action or proceedings including,
      without  limitation,  the  making,   enforcement  or  execution   or
      attachment  against any property whatsoever of any order or judgment
      which may be made or given in such action or proceedings.

IN WITNESS  whereof the Owner has caused  this Mortgage to be executed the
day and year first before written.

ENSCO OFFSHORE COMPANY II


By_____________________________________
  Name:   Robert O. Isaac
  Title: <PAGE>


                        ACKNOWLEDGEMENT OF MORTGAGE
                        ---------------------------

STATE OF NEW YORK )
                  )  S.S.
COUNTY OF NEW YORK)



On this 27th day of February, 1997 before me personally appeared ROBERT O.
ISAAC to me known  who being by me duly  sworn did depose and say  that he
resides  at  Dallas,  Texas; that  he  is  Assistant  Secretary for  ENSCO
OFFSHORE COMPANY II, the  corporation described in and which  executed the
foregoing instrument; and that he signed  his name thereto by order of the
Board of Directors of ENSCO OFFSHORE COMPANY II.





                 _________________________________________
                               Notary Public<PAGE>


                                                              EXHIBIT H-3
                                                              -----------






                          Dated February 27, 1997





                          ENSCO OFFSHORE U.K. LTD.
                                 as Owner



                                   -and-





                      CHRISTIANIA BANK OG KREDITKASSE,
                              NEW YORK BRANCH,
                                as Mortgagee



                                  ENSCO 80       
                                  ENSCO 85
                                  ENSCO 92





__________________________________________________________________________


                           FLEET DEED OF COVENANTS

__________________________________________________________________________<PAGE>



                                   INDEX
                                   -----

CLAUSE                                                             PAGE
- ------                                                             ----
  1        DEFINITIONS AND INTERPRETATION                             2

  2        REPRESENTATIONS AND WARRANTIES                             7

  3        PAYMENT COVENANTS                                          9

  4        MORTGAGE                                                   9

  5        PRESERVATION OF SECURITY                                  10

  6        INSURANCE                                                 11

  7        RIG COVENANTS                                             15

  8        PROTECTION OF SECURITY                                    18

  9        ENFORCEABILITY AND MORTGAGEE'S POWERS                     19

  10       APPLICATION OF MONEYS                                     21

  11       FURTHER ASSURANCES                                        22

  12       POWER OF ATTORNEY                                         22

  13       INDEMNITIES                                               23

  14       RIGHTS OF OWNER                                           24

  15       COMMUNICATIONS                                            24

  16       ASSIGNMENTS                                               24

  17       MISCELLANEOUS                                             25

  18       LAW AND JURISDICTION                                      25

  EXECUTION

  EXHIBIT 1   FORM OF CREDIT AGREEMENT<PAGE>


THIS FLEET DEED OF COVENANTS is made on the 27th  day of February, 1997
BETWEEN:

(1)   ENSCO  OFFSHORE U.K.  LTD., a  company organized  under the  laws of
      England  and Wales  having its  principal offices  at 2700  Fountain
      Place, 1445 Ross Avenue, Dallas, Texas 75202 (the "Owner"), and

(2)   CHRISTIANIA  BANK OG  KREDITKASSE, a  Norwegian banking  corporation
      acting through  its New York Branch having an office at 11 West 42nd
      Street, New York, NY  10036, as agent for the  Banks (as hereinafter
      defined) (the "Mortgagee")

WHEREAS
- -------
(A)    By  a  Credit Facility  Agreement dated  as  of December  15, 1993,
Amended  and Restated  as  of  September  27,  1995,  further  amended  by
Amendment No. 1  dated June 13, 1996, and further  Amended and Restated as
of  February 27, 1997 (as  further modified, amended  or supplemented from
time to time, the "Credit Agreement"), among (i) the Owner, ENSCO Offshore
Company  ("Offshore")   and  Dual  Holding  Company,   as  borrowers  (the
"Borrowers");  (ii) Offshore,  ENSCO Delaware,  Inc. ("Parent")  and ENSCO
International Incorporated ("Holdings"), as guarantors (the "Guarantors");
(iii)  the  financial  institutions  party  thereto  (the  "Banks");  (iv)
Christiania Bank og Kreditkasse, New York Branch and Den norske  Bank ASA,
New  York Branch, as co-agents (the "Co-Agents") and (v) the Mortgagee, as
administrative  agent, letter  of credit  issuer and security  trustee (in
such  capacity, the  "Administrative  Agent") (the  form  of which  Credit
Agreement together with Exhibit  B-1 through B-3 thereto, but  without the
remaining  attachments is  attached hereto  as Exhibit  1), it  was agreed
among other things that  the Banks would  make available to the  Borrowers
upon the terms and conditions therein described a senior secured revolving
credit  facility (the  "Facility")  in an  aggregate  amount at  any  time
outstanding of Two Hundred Million United States Dollars (US$200,000,000),
providing for the making of  Loans and the issuance of, and  participation
in, Letters of Credits, as contemplated therein.

(B)   The  obligations of the Borrowers  with respect to  the Facility are
evidenced  by  the  Credit  Agreement  and  the  other  Credit  Documents,
including the promissory  notes of the Borrowers  payable to the order  of
the respective Banks (each  a "Note" and, collectively, the  "Notes") (the
forms  of which  are attached  as Exhibit  B-1 through  B-3 to  the Credit
Agreement). 

(C)   It is a condition precedent to the Banks advancing amounts under the
Credit  Facility to the  Owner that the  Owner shall  execute, deliver and
register statutory mortgages  in favor  of the Mortgagee  over sixty  four
sixty-fourth shares in each of the Rigs (as hereinafter defined) and shall
enter into a Fleet Deed  of Covenants supplemental thereto in the  form of
this Deed.

(D)   The Owner has executed in favor of the Mortgagee statutory mortgages
in account  current form bearing the  same date as this  Deed of Covenants
(the "Mortgages")  and constituting first  mortgages on sixty  four sixty-
fourth shares in each of the said Rigs and  the Mortgages and this Deed of
Covenants are each entered into by the Owner in consideration of the Banks
agreeing, at  the request of  the Owner and  the other Borrowers,  to make
Loans to the Borrowers and issue Letters of Credit for  the account of the<PAGE>


Borrowers  under the Credit  Facility and as  a condition  thereto and for
other  good  and  valuable  consideration  provided  by  the   Banks  (the
sufficiency  and receipt  of which  the Owner  hereby acknowledges).   The
Mortgages  and this  Deed of  Covenants are  made for  the benefit  of the
Mortgagee  and the  other Secured  Creditors (as  hereinafter defined)  to
secure (i)  the full and prompt  payment when due of (x)  the principal of
and  interest on  the Tranche B  Notes issued,  and Tranche  B Loans made,
under the Credit Agreement, and (y) all other obligations and indebtedness
(including without limitation, indemnities, Fees and interest thereon)  of
the  Owner to  the Secured  Creditors, whether  now existing  or hereafter
incurred under, arising out of or  in connection with the Credit Agreement
and  the  other  Credit  Documents  (including,  without  limitation,  the
Mortgages  and this  Deed  of  Covenants)  and  the  due  performance  and
compliance by the Owner  with all of the terms,  conditions and agreements
contained  in  the  Credit  Agreement  and  the   other  Credit  Documents
(including, without limitation, the Mortgages and this Deed of Covenants);
(ii) any and all sums advanced by the Mortgagee/Secured Creditors in order
to  preserve  the Collateral  (as  hereinafter  defined) or  preserve  its
security interest in the Collateral; (iii) in the event of any  proceeding
for the  collection or enforcement  of any  indebtedness, obligations,  or
liabilities of the Owner referred  to in clause (i) above, after  an Event
of  Default shall have occurred and be continuing, the reasonable expenses
of  the  Mortgagee of  re-taking, holding,  preparing  for sale  or lease,
selling or otherwise disposing of or foreclosing on the Collateral,  or of
any  exercise  by the  Mortgagee of  its  rights hereunder,  together with
reasonable  attorneys' fees of counsel  to the Mortgagee  and court costs;
and (iv)  all amounts paid by  any Indemnitee as to  which such Indemnitee
has  the right to reimbursement under Clause  13 of this Deed of Covenants
(all  such obligations,  liabilities,  sums and  expenses  referred to  in
clauses  (i)  through (iv)  above being  collectively  referred to  as the
"Obligations").   It  is acknowledged  and agreed  that  the "Obligations"
shall include extensions of  credit of the types described  above, whether
outstanding on the date of this Deed of Covenants or extended from time to
time after the date of this Deed of Covenants.

(E)   This Deed of Covenants  is supplemental to the Mortgages  and to the
security thereby created.

NOW THIS DEED WITNESSETH AND IT IS HEREBY AGREED
- ------------------------------------------------

1     DEFINITIONS AND INTERPRETATION
      ------------------------------
1.1   In this Deed of Covenants unless the context otherwise requires, the
following expressions shall have the following meanings:

      "Administrative  Agent" shall have the same meaning for such term as
      set forth in the Credit Agreement;

      "Bank" shall have the meaning provided in recital (A) hereto;

      "Collateral" shall have the same meaning for such term as set  forth
      in the Credit Agreement;

      "Credit Agreement" shall  have the meaning  provided in recital  (A)
      hereto;<PAGE>


      "Credit Documents" shall have the meaning for such term as set forth
      in the Credit Agreement;

      "Credit Facility  Period" shall  mean the  period commencing on  the
      date  hereof and  ending  on the  date  the Total  Commitments  have
      terminated,  no Letters of  Credit remain outstanding  and the Loans
      and the Unpaid Drawings  together with interest, Fees and  all other
      obligations are paid in full; 

      "Default  Rate"  shall  mean  the  rate of  interest  calculated  in
      accordance with Section 1.08(c) of the Credit Agreement;

      "Environmental  Approvals" means  all approvals,  licenses, permits,
      exemptions or authorization  required under applicable Environmental
      Laws;

      "Environmental Claims" means any and  all administrative, regulatory
      or judicial actions, suits, demands, demand letters, claims,  liens,
      notices  of noncompliance or  violation, investigations  (other than
      internal reports  prepared by Holdings  or any  of its  Subsidiaries
      solely  in the ordinary course of such  Person's business and not in
      response  to any  third  party action  or request  of  any kind)  or
      proceedings  relating in  any way  to any  Environmental Law  or any
      permit issued, or any approval  given, under any such  Environmental
      Law (hereafter,  "Claims"), including,  without limitation, (a)  any
      and  all  Claims  by  governmental  or  regulatory  authorities  for
      enforcement, cleanup,  removal, response, remedial or  other actions
      or damages pursuant to any applicable Environmental Law, and (b) any
      and all  Claims by any  third party  seeking damages,  contribution,
      indemnification,  cost recovery,  compensation or  injunctive relief
      resulting from Hazardous  Materials arising from  alleged injury  or
      threat of injury to health, safety or the environment;

      "Environmental Incident" means (i) any release of Hazardous Material
      from any of the Rigs, (ii) any incident in which  Hazardous Material
      is  released from  a vessel  other than  any of  the Rigs  and which
      involves collision between  the Rig  and such other  vessel or  some
      other incident of navigation or operation, in either case, where the
      Rig or the  Owner is  actually or  allegedly at  fault or  otherwise
      liable (in  whole  or  in  part) or  (iii)  any  incident  in  which
      Hazardous Material is  released from a vessel other  than any of the
      Rigs  and where  the Rig  is actually  or  potentially liable  to be
      arrested as a result and/or where the Owner is actually or allegedly
      at  fault or  otherwise liable  (and, in  each such  case, "release"
      shall mean  disposing,  discharging, injecting,  spilling,  leaking,
      leaching,  dumping, emitting,  escaping, emptying,  seeping, placing
      and the like,  into or upon any land  or water or air,  or otherwise
      entering into the environment);

      "Environmental Law" means any applicable Federal, state, foreign  or
      local statute, law, rule, regulation, ordinance, code, guide, policy
      and  rule of common law now or hereafter  in effect and in each case
      as  amended,  and  any  judicial  or  administrative  interpretation
      thereof, including  any  judicial or  administrative order,  consent
      decree or judgment, relating  to the environment, health,  safety or
      Hazardous    Materials,    including,   without    limitation,   the
      Comprehensive Environmental Response, Compensation and Liability Act<PAGE>


      of  1980, as amended, 42  U.S.C. Section 9601 ET  SEQ.; the Resource
      Conservation and Recovery Act, as amended, 42 U.S.C. Section 6901 ET
      SEQ.; the Federal Water Pollution Control Act, as amended, 33 U.S.C.
      Section  1251 ET SEQ.; the  Toxic Substances Control  Act, 15 U.S.C.
      Section 7401 ET  SEQ.; the Clean Air Act, 42  U.S.C. Section 7401 ET
      SEQ.; the Safe Drinking  Water Act, 42 U.S.C. Section 3808  ET SEQ.;
      the Oil  Pollution Act of 1990,  33 U.S.C. Section 2701  ET SEQ. and
      any  applicable  state   and  local  or   foreign  counterparts   or
      equivalents; 

      "Fees" shall  have the same meaning  for such terms as  set forth in
      the Credit Agreement;

      "Hazardous Materials" means (a) any petroleum or petroleum products,
      radioactive  materials, asbestos in any form that is or could become
      friable,  urea formaldehyde  foam insulation, transformers  or other
      equipment  that  contained,  electric  fluid  containing  levels  of
      polychlorinated  biphenyls,   and  radon  gas;  (b)  any  chemicals,
      materials  or substances defined as or included in the definition of
      "hazardous  substances,"  "hazardous waste,"  "hazardous materials,"
      "extremely  hazardous waste,"  "restricted hazardous  waste," "toxic
      substances," "toxic pollutants," "contaminants," or "pollutants," or
      words of similar import, under any applicable Environmental Law; and
      (c)  any other chemical, material or substance, exposure to which is
      prohibited, limited or regulated by any governmental authority;

      "Indemnitee" shall have the meaning set forth in Section 13.1;

      "Insurances" includes all policies and contracts of insurance (which
      expression  includes all entries of  each of the  Rigs in protection
      and indemnity associations) which are from time to time taken out or
      entered  into  in respect  of the  Rigs  or otherwise  by  the Owner
      (whether in the sole name of the Owner or  in the joint names of the
      Owner  and  the  Administrative  Agent)  and  all  benefits  thereof
      (including claims of whatsoever nature and return of premiums);

      "Letter of Credit" shall have the same meaning for such  term as set
      forth in Section 2.01(a) of the Credit Agreement;

      "Letter of Credit Issuer" shall have the same meaning  for such term
      as set forth in the Credit Agreement;

      "Loan(s)" shall have the same meaning for such term as  set forth in
      the Credit Agreement;

      "Major Casualty" means  any casualty to  any of the Rigs  in respect
      whereof  the  claim  or the  aggregate  of  the  claims against  all
      insurers,   before  adjustment   for  any   relevant  franchise   or
      deductible,  exceeds Five  Hundred  Thousand United  States  Dollars
      (US$500,000) or the equivalent in any other currency;

      "Mortgages" means the  statutory mortgages on  the Rigs bearing  the
      same date as this Deed of Covenants first referred to in Recital (D)
      hereto;

      "Note" shall have the meaning provided in Recital (B) hereto;<PAGE>


      "Obligations" shall have the meaning provided in Recital (D) hereto;

      "Oil Pollution Act 1990" means the Oil Pollution Act 1990 (33 U.S.C.
      Section 2701 ET SEQ.), as amended;

      "Other  Rigs" means, individually  or collectively, each  of (i) the
      offshore  drilling  rig ENSCO  98  owned by  ENSCO  Offshore Company
      ("Offshore") documented under the laws and flag of the United States
      with Official Number 589096; (ii) the offshore drilling rig ENSCO 68
      owned  by Offshore documented under the laws  and flag of the United
      States with Official Number 574668; (iii) the offshore  drilling rig
      ENSCO 81 owned by Offshore documented under the laws and flag of the
      United  States  with  Official  Number  606512;  (iv)  the  offshore
      drilling  rig ENSCO 82 owned  by Offshore documented  under the laws
      and flag of the United States  with Official Number 602912; (v)  the
      offshore drilling rig  ENSCO 83 owned  by Offshore documented  under
      the laws and flag of the United  States with Official Number 605536;
      (vi) the offshore drilling rig ENSCO 84 owned by Offshore documented
      under the laws and  flag of the  United States with Official  Number
      637544;  (vi) the offshore drilling  rig ENSCO 86  owned by Offshore
      documented  under  the  laws and  flag  of  the  United States  with
      Official Number 643110;  (viii) the offshore  drilling rig ENSCO  87
      owned by Offshore documented under  the laws and flag of the  United
      States with Official Number 648969;  (ix) the offshore drilling  rig
      ENSCO 88 owned by Offshore documented under the laws and flag of the
      United States with Official Number 645637; (x) the offshore drilling
      rig ENSCO 89 owned by Offshore documented under the laws and flag of
      the United States  with Official  Number 652440;  (xi) the  offshore
      drilling  rig ENSCO 90 owned  by Offshore documented  under the laws
      and flag of the United States with Official Number 647859; (xii) the
      offshore drilling rig  ENSCO 93 owned  by Offshore documented  under
      the laws and flag  of the United States with Official Number 651385;
      (xiii)  the  offshore  drilling  rig  ENSCO  94  owned  by  Offshore
      documented  under  the  laws and  flag  of  the  United States  with
      Official  Number 638685;  (xiv) the  offshore drilling rig  ENSCO 95
      owned by Offshore documented  under the laws and flag  of the United
      States with Official Number  642112; (xv) the offshore  drilling rig
      ENSCO 99 owned by Offshore documented under the laws and flag of the
      United  States  with  Official  Number  682070;  (xvi)  the  jack-up
      drilling  unit ENSCO 50 owned  by ENSCO Offshore  Company II ("ENSCO
      II") documented under  the laws and flag of  the Republic of Liberia
      with Official Number 9383; (xvii) the jack-up drilling unit ENSCO 51
      owned by ENSCO II documented under the laws and flag of the Republic
      of Liberia with Official  Number 9384; (xviii) the jack-up  drilling
      unit ENSCO 53 owned by  ENSCO II documented under the laws  and flag
      of the Republic of Liberia with Official Number 10260 and  (xix) the
      jack-up  drilling unit ENSCO 54  owned by ENSCO  II documented under
      the  laws  and  flag  of  the  Republic  of  Liberia  with  Official
      Number 10159;

      "Permitted  Liens" shall have the same  meaning for such term as set
      forth in the Credit Agreement. 

      "Requisition  Compensation" means all  moneys or  other compensation
      payable during the Credit  Facility Period by reason  of requisition
      for  title  or  other compulsory  acquisition  of  any  of the  Rigs
      otherwise than by requisition for hire;<PAGE>


      "Rigs" means  the  whole of  (i) the  drilling barge  ENSCO 80  with
      Official  Number 724944 of 7,250 gross registered tons and 7,250 net
      registered  tons; (ii)  the drilling  barge  ENSCO 85  with Official
      Number  724945  of   6,751  gross  registered  tons  and  6,751  net
      registered tons; and (iii) the drilling barge ENSCO 92 with Official
      Number  724946  of  6,541  gross  registered  tons   and  6,541  net
      registered  tons; each  documented under  the laws  and flag  of the
      Commonwealth of Bahamas and  includes any share or interest  therein
      and  their  respective engines,  machinery,  boats, tackle,  outfit,
      spare  gear,  fuel,  consumable  or  other  stores,  belongings  and
      appurtenances  whether on board or  ashore and whether  now owned or
      hereafter acquired  (but  excluding therefrom  any leased  equipment
      owned by third parties);

      "Secured  Creditors"  shall  mean collectively  the  Mortgagee,  the
      Banks,  the Letter of Credit  Issuer and the  Collateral Agent under
      and as defined in the Credit Agreement;

      "Security  Documents" shall have the  same meaning for  such term as
      set forth in the Credit Agreement;

      "Security  Interest"  means a  mortgage,  charge  (whether fixed  or
      floating),   pledge,   lien,   hypothecation,    assignment,   trust
      arrangement,  title  retention   or  other   security  interest   or
      arrangement of any kind whatsoever;

      "Taxes" shall  have the same meaning  for such term as  set forth in
      the Credit Agreement;

      "Total Commitment" shall have the same meaning for such term as  set
      forth in the Credit Agreement;

      "Total Loss"  means (a) the actual,  constructive, arranged, agreed,
      or  compromised Total Loss  of any of the  Rigs; (b) the requisition
      for  title or other compulsory  acquisition or forfeiture  of any of
      the  Rigs otherwise than by  requisition for hire;  (c) the capture,
      seizure, arrest, detention or confiscation of any of the Rigs by any
      government or  by persons acting or  purporting to act on  behalf of
      any government unless the Rig or Rigs be released from such capture,
      seizure,  arrest  or detention  within  ninety (90)  days  after the
      occurrence thereof;

      "Tranche  B Loans" shall have the same  meaning for such term as set
      forth in the Credit Agreement; 

      "Tranche B  Note" shall have the  same meaning for such  term as set
      forth in the Credit Agreement;

      "United States Dollars" and  "US$" means the lawful currency  of the
      United States of America;

      "Unpaid Drawing" shall have  the same meaning  for such term as  set
      forth in the Credit Agreement;

      "War Risks" includes  the risk of mines and all  risks excluded from
      the  standard form of  English marine policy by  the free of capture
      and seizure clause.<PAGE>


1.2   Except where  otherwise expressly  provided  or unless  the  context
otherwise requires, words and expressions defined in the  Credit Agreement
shall bear the same meanings when used in this Deed of Covenants.

1.3   This  Deed  of  Covenants shall  be  read  together  with the  other
Security Documents.

1.4   Notwithstanding that this Deed  of Covenants is supplemental to  the
Mortgages it shall continue in  full force and effect after  any discharge
of the Mortgages.

1.5   In this Deed:

      (a)  Clause headings are inserted for convenience only and shall not
           affect the  construction of  this  Deed and,  unless  otherwise
           specified,  all references  to Clauses are  to clauses  of this
           Deed;

      (b)  unless  the  context  otherwise  requires,  words denoting  the
           singular number shall include the plural and vice versa;

      (c)  references to  persons include  references to  bodies corporate
           and unincorporate;

      (d)  references  to assets  include property,  rights and  assets by
           every description;

      (e)  references to any document are to be construed as references to
           such document as amended or supplemented from time to time; and

      (f)  references   to  any  enactment  shall  include  re-enactments,
           amendments and extensions thereof.

2     REPRESENTATIONS AND WARRANTIES
      ------------------------------
2.1   The Owner hereby represents and warrants to the Mortgagee that:

      (a)  the Owner is the sole legal  and beneficial owner of sixty four
           sixty-fourths shares of and in each of the Rigs and none of the
           said shares  is  subject  to any  Security  Interest  (save  as
           constituted by  the Permitted  Liens,  the Mortgages  and  this
           Deed) and  the Owner warrants that it will defend its title and
           possession  in each of the Rigs and  every part thereof for the
           benefit  of the Mortgagee against the claims and demands of all
           persons whomsoever arising as the  result of any liens, charges
           or encumbrances, other than Permitted Liens;

      (b)  the rigs are not (a)  under arrest or (b) in the  possession of
           any person (other than their respective masters and crews);

      (c)  the  Owner is a company duly organized and validly existing and
           in good standing under  the laws of  England and Wales and  has
           power and has obtained all necessary consents for the execution
           and  performance of  this Deed  and each  Security Document  to
           which it is a party;<PAGE>


      (d)  the Owner has full power and authority (i)  to register each of
           the  Rigs in  its name under  flag of  the Commonwealth  of the
           Bahamas, (ii) to execute and deliver this Deed of Covenants and
           the Mortgages, (iii) to mortgage sixty four sixty-fourth shares
           of and in each of the  Rigs as security for the Obligations and
           (iv)  to comply  with the  provisions of,  and perform  all its
           obligations under, this Deed;

      (e)  the Owner  has complied with  all statutory and  other material
           requirements   relating  to  the  ownership,  registration  and
           operation of each of the Rigs;

      (f)  the Owner has not assigned or otherwise created any encumbrance
           over its or any part of its right, title and interest in and to
           earnings  of the  Rigs or  any Requisition  Compensation except
           Permitted Liens; 

      (g)  the Rigs are insured on the date hereof in  compliance with the
           requirements of Section 6.1 hereof; 

      (h)  the Rigs  are classified  A1 drilling units  with the  American
           Bureau of  Shipping (or  to such  other classification or  with
           such  other  classification  society  as  in  either  case  the
           Mortgagee may have approved in writing); 

      (i)  except for registration of the Mortgages pursuant to Section 33
           of the Merchant Shipping  Act, Chapter 246 of the  Bahamas, all
           consents,  licenses  and  approvals  of,  declarations  to   or
           registrations with  courts or  government agencies  required to
           make  the  Mortgages  and  this  Deed  its  valid  and  binding
           obligations or to enable  the Owner lawfully to enter  into and
           perform  the obligations undertaken by it in the same have been
           obtained or made and are in full force and effect;

      (j)  except for registration of the Mortgages pursuant to Section 33
           of the Merchant Shipping Act, Chapter 246 of the Bahamas, it is
           not  necessary to ensure the legality, validity, enforceability
           or admissibility in evidence  of the Mortgages or this  Deed in
           any  jurisdiction  in which  the  Owner  is incorporated,  owns
           assets  or carries  on business  that such  document  be filed,
           recorded, registered  or enrolled with any  court of government
           agency of or in that jurisdiction; 

      (k)  neither  its  entry  into nor  the  performance  by  it of  the
           obligations undertaken by it in the Mortgages and this Deed (a)
           give  rise to,  cause to  crystallize or  oblige any  person to
           create  any  encumbrance  other  than  one  in  favor   of  the
           mortgagee,  (b)  vest  in  any  person  any  right  to  require
           premature  payment or repayment of any indebtedness of it or to
           terminate or  withdraw any Rig  from service under  any charter
           party which  it is a party or (c) is or will necessarily result
           in any breach of  or default under its memorandum  and articles
           of  association   (or  documents  of  equivalent  effect),  any
           provision of  law or any agreement  to which it is  party or by
           which it may be bound; <PAGE>


      (l)  the  Owner  has taken  all  necessary action  to  authorize the
           execution and delivery of the Notes, the Credit  Agreement, the
           Mortgage  and this Deed,  and this Deed  constitutes the legal,
           valid and  binding obligation of the  Owner enforceable against
           the  Owner in accordance with  its terms (except  to the extent
           limited by applicable  bankruptcy, reorganization,  insolvency,
           moratorium or other laws of general application relating to  or
           affecting the  enforcement of creditors' rights as from time to
           time in effect and general equitable principles).  The Mortgage
           when filed with the  Bahamian Registrar of Ships will  create a
           legal, valid and  enforceable first priority  mortgage lien  on
           each of the Rigs; and

      (m)  on  and after the Restatement Effective Date (as defined in the
           Credit  Agreement),  each of  the  Security  Documents and  the
           Floating Charge  (as defined in the  Credit Agreement) creates,
           as security for the  Obligations (in this paragraph 2.2(m),  as
           defined in  the  Credit  Agreement)  purported  to  be  secured
           thereby, a valid and enforceable perfected security interest in
           and  Lien (as  defined in the  Credit Agreement) on  all of the
           Collateral  subject  thereto, to  the  extent  perfection of  a
           security interest or Lien is governed by Article 8 or Article 9
           of the UCC (as defined in the applicable Security Documents) or
           the Merchant Shipping Act of the Bahamas or applicable security
           interest filing provisions in England, and subject to no  other
           Liens (except that the  Collateral may be subject to  Permitted
           Liens), in favor  of the  Collateral Agent (as  defined in  the
           Credit Agreement) or  the Security Trustee  (as defined in  the
           Credit  Agreement), as the case may  be, for the benefit of the
           Banks.    No filings  or recordings  are  required in  order to
           perfect  the  Security  Interests  created under  any  Security
           Document  and  the  Floating  Charge  except  for  filings   or
           recordings  required  in  connection  with  any  such  Security
           Document  and the  Floating Charge which  shall have  been made
           upon  or   prior  to  (or  are  the  subject  of  arrangements,
           satisfactory to  the Administrative  Agent,  for filing  on  or
           promptly after the date of) the execution and delivery thereof.

2.2   The  representations and warranties of  the Owner set  out in Clause
2.1  shall survive the execution  of this Deed  and shall be  deemed to be
repeated throughout the  Credit Facility Period at the  time of the making
of each Loan and the issuance of each Letter of Credit with respect to the
facts and circumstances  existing at each  such time, as  if made at  each
such time.

3     PAYMENT COVENANTS
      -----------------
3.1   The Owner hereby covenants with the Secured Creditors:

      (a)  to pay  all such expenses, claims,  liabilities, losses, costs,
           duties,  Fees, charges  or other  moneys as  are stated  in the
           Credit Agreement and/or this Deed to be payable by the Owner to
           or recoverable from the  Owner by the Secured Creditors  or any
           of them  (or in respect of which the Owner agrees in the Credit
           Agreement  and/or  this Deed  to indemnify  any of  the Secured
           Creditors)  at the  times and  in the  manner specified  in the
           Credit Agreement and/or this Deed; and<PAGE>


      (b)  to  pay interest on  any amount payable by  the Owner under the
           Credit Agreement and on any such expenses, claims, liabilities,
           losses, costs,  duties, Fees, charges or  other moneys referred
           to in Clause 3.1(a) as paid  by the Secured Creditors from  the
           date on  which the  relevant amount  becomes payable  under the
           Credit Agreement or such expense, claim, liability, loss, cost,
           duty, Fee,  charge or other  money is paid  or incurred  by any
           Secured  Creditor  until  the  date  of  payment  reimbursement
           thereof  to such  Secured  Creditor (as  well  after as  before
           judgment) at the Default Rate; and

      (c)  to pay each and every other sum of money which may be or become
           owing to the any Secured Creditor under this Deed and the other
           Credit Documents to which the Owner  is or is to be a party  at
           the times and in the manner specified herein or therein.<PAGE>


4     MORTGAGE
      --------
4.1   By way  of security for  the Obligations the  Owner with full  title
guarantee hereby mortgages and  charges and agrees to mortgage  and charge
to  and in  favor of  the Mortgagee  all its  rights, title  and interest,
present and future, to and in each of the Rigs.

4.2   The Owner covenants with the Mortgagee  that it will not at any time
during  the Credit Facility Period without the previous consent in writing
of the Mortgagee (and then only subject to such terms as the Mortgagee may
impose) create or suffer the creation of any Security Interest (other than
a Permitted Lien) on or in respect of any of the Rigs or any share therein
in  favor of  any person other  than the  Mortgagee or unless  the same is
being  contested in  good  faith by  proceedings  diligently conducted  in
relation to which the Owner has established an adequate reserve.

4.3   The Owner shall remain liable to perform all the obligations assumed
by  it in  relation  to the  Rigs  and the  Mortgagee  shall  be under  no
obligation  of any  kind whatsoever  in  respect thereof  or be  under any
liability whatsoever in  event of any failure by the  Owner to perform its
obligations in respect thereof.

4.4   On the date on which the  Credit Agreement and all Letters of Credit
shall  have  been terminated,  when no  Note  remains outstanding  and all
Obligations shall have  been irrevocably  paid in full,  the Mortgage  and
this Deed of Covenants shall terminate,  and the Mortgagee at the  request
and expense of the Owner, will  execute and deliver to the Owner a  proper
instrument or  instruments acknowledging the  satisfaction and termination
of the Mortgage and this Deed of Covenants, and will duly assign, transfer
and  deliver to the Owner (without recourse and without any representation
or warranty) such of each  of the Rigs as may remain in  the possession of
the Mortgagee together  with any moneys at the time  held by the Mortgagee
hereunder.

5     PRESERVATION OF SECURITY
      ------------------------
5.1   It is declared and agreed that:

      (a)  the  security created by the Mortgages and this Deed (or either
           of  them)  shall  be held  by  the  Mortgagee  as a  continuing
           security for  the performance of  the Obligations and  that the
           security so created shall not be satisfied  by any intermediate
           payment or satisfaction of any part of the Obligations;

      (b)  the security so created shall  be in addition to and shall  not
           in  any  way be  prejudiced  or affected  by  any of  the other
           Security Documents;

      (c)  except  as  otherwise  specifically  provided  in  the   Credit
           Agreement or other Security Documents, the Mortgagee shall  not
           have to wait  for the  Administrative Agent, the  Banks or  the
           Letter  of Credit Issuer to  enforce any of  the other Security
           Documents  before  enforcing  the   security  created  by   the
           Mortgages and this Deed (or either of them);

      (d)  no delay or omission on the part of the Mortgagee in exercising
           any  right, power or remedy  under the Mortgages  and this Deed<PAGE>


           (or either of them) shall impair such right, power or remedy or
           be  construed as  a  waiver thereof  nor  shall any  single  or
           partial  exercise of any  such right, power  or remedy preclude
           any  further  exercise thereof  or  the exercise  of  any other
           right,  power  or remedy.    The  rights, powers  and  remedies
           provided in this Deed  are cumulative and not exclusive  of any
           rights,  powers  and  remedies  provided  by  law  and  may  be
           exercised from time  to time and as often  as the Mortgagee may
           deem expedient; and

      (e)  any waiver  by the Mortgagee of  any terms of this  Deed or any
           consent  given by the Mortgagee  under this Deed  shall only be
           effective if given in writing and then only for the purpose and
           upon the terms for which it is given.

5.2   Any  settlement or discharge under  the Mortgages and  this Deed (or
any of them) between the Mortgagee and the Owner shall be conditional upon
no security  or payment to  the Secured  Creditors or any  of them by  the
Credit Parties (as defined  in the Credit  Agreement) or any person  being
avoided or set-aside or ordered to be refunded or reduced by virtue of any
provision or enactment relating to bankruptcy, insolvency,  administration
or  liquidation for the time being in  force and, if such condition is not
satisfied,  the Mortgagee shall  be entitled to recover  from the Owner on
demand  the value of such security or the amount of any such payment as if
such settlement or discharge had not occurred.

5.3   The rights of  the Secured  Creditors under the  Mortgages and  this
Deed and the security thereby and hereby constituted shall not be affected
by any act, omission, matter or thing which, but for this provision, might
operate to impair, affect or discharge such rights and security, in  whole
or  in part, including without limitation, and  whether or not known to or
discoverable by any person:

      (a)  any time or waiver  granted to or composition with  any person;
           or

      (b)  the  taking, variation,  compromise, renewal  or release  of or
           refusal  or neglect to perfect or  enforce any rights, remedies
           or  securities against any of  the Credit Parties  or any other
           person; or

      (c)  any  legal   limitation,   disability,  incapacity   or   other
           circumstances  relating  to the  Credit  parties  or any  other
           person; or

      (d)  any amendment or supplement to the Credit Agreement, any of the
           Credit  Documents (other than this Deed)  or any other document
           or security; or

      (e)  the dissolution, amalgamation, reconstruction or reorganization
           of any of the Credit Parties or any other person; or

      (f)  the   unenforceability,  invalidity   or  frustration   of  any
           obligations  of any of the  Credit Parties or  any other person
           under the Credit Agreement, any of  the Credit Documents (other
           than this Deed) or any other document or security.<PAGE>


6     INSURANCE
      ---------
6.1   The  Owner  covenants  with  the  Mortgagee  throughout  the  Credit
Facility Period that:

      (a)  The Owner  shall, at its own  expense, when and so  long as any
           Obligations remain  outstanding, insure the Rigs  and keep each
           of  them insured, or  cause the Rigs  to be insured,  in lawful
           money of the  United States,  in such amounts,  for such  risks
           (including  without  limitation,  hull and  machinery/increased
           value, protection and indemnity risks, pollution liability, War
           Risks  (subject to  subparagraph (vii)  below) and  in addition
           such  other  risks  which  would  be  covered  by  experienced,
           prudent,  and responsible  companies  engaged in  the  offshore
           contract  drilling   of  hydrocarbons   in  places   and  under
           conditions comparable  to those in which the  Rigs are employed
           from time  to  time  and  possessing  financial  and  operating
           characteristics similar to  those of the  Owner (herein  called
           "Similar   Companies"),   in  such   form   (including  without
           limitation,  the  form  of  the  loss  payable  clause and  the
           designation of  named  assureds)  and  with  such  first  class
           insurance  companies,  underwriters,  funds,  mutual  insurance
           associations or  clubs, as shall be  reasonably satisfactory to
           the Administrative Agent.  With respect to  hull and machinery/
           increased value insurance, including War Risk, the Owner  shall
           insure the  Rigs and  keep each of  them insured, or  cause the
           Rigs to  be insured, for an amount which is when such amount is
           aggregated with the  amount of such  insurance coverage on  the
           Other  Rigs, such aggregate amount  shall be not  less than the
           greater of (i) 125% of the Total Commitment and (ii) the amount
           of  coverage that  would be  in the  range obtained  by Similar
           Companies on the Rigs and the Other Rigs.  Such insurance shall
           be  on  the basis  of  "new  for  old"  with no  deduction  for
           depreciation.   The Rigs  shall in no  event be  insured for an
           amount  less  than the  agreed valuation  as  set forth  in the
           applicable marine and War Risk policies.  

             (i)  Full  form marine  hull and machinery  insurance extended
                  to insure against all risks  of loss or damage, including
                  but not  limited to  the risk  of loss  from blowout  and
                  cratering and against such risks and  in such form as are
                  approved by the Mortgagee  and are necessary or advisable
                  for the protection of  the interest of  the Mortgagee and
                  the Shipowner in an amount not  less than the greater  of
                  (A), when  added  to  insurances  covering the  Rigs  and
                  Other Rigs, 125% of the Commitments  or (B) the amount of
                  coverage that  would  be  within  the range  obtained  by
                  Similar Companies on such Rigs and  the Other Rigs.   The
                  deductible  or self-insured  retention  under  the policy
                  shall  not  exceed   US$250,000  per  occurrence.     The
                  policies shall  be endorsed  to delete the sue  and labor
                  requirements as applied to  the Mortgagee and  to provide
                  coverage for collision and earthquake hazards; 

            (ii)  Full   form   marine   protection   and   indemnity   and
                  comprehensive  general liability insurance (including any
                  excess   liability  insurance),  including  coverage  for<PAGE>


                  contractual liability,  pollution liability,  contractual
                  and   legal   wreck  removal,   crew   coverage,   excess
                  collision,  salvage  and  general average,  care, custody
                  and  control  coverage.   Such  protection  and indemnity
                  insurance  shall  be  maintained  in the  broadest  forms
                  generally available  to similar Companies  in the  United
                  States,  London or Scandinavian  markets and  shall be in
                  an amount not less than  the greater of (A)  the range of
                  that    carried    by    similar   companies    and   (B)
                  US$200,000,000.     Said  policy   shall  not  include  a
                  deductible  or   self-insured  retention  in  excess   of
                  US$250,000 per  occurrence.  Such insurance shall include
                  a cross-liability endorsement; 

           (iii)  The Owner shall, at all times  during which the Rigs  are
                  operating within  the jurisdiction  of the  United States
                  of America, maintain insurance  or post bond  or maintain
                  approved   evidence  of   financial  responsibility  with
                  respect to the Rigs to cover  the actual cost of  removal
                  of discharged  oil which  the Owner  or the  Rigs may  be
                  held  strictly liable (or  held liable  due to negligence
                  of the Owner or  any other Person)  under the  applicable
                  Environmental Laws, or under  any other federal  or state
                  law which, in   the future, may apply  to the Rigs  or to
                  the  Owner; and  the  Owner  shall maintain  insurance or
                  post   bond or  maintain approved  evidence of  financial
                  responsibility   covering  similar   pollution  risks  or
                  liabilities incident  thereto under  any law,  regulation
                  or  judicial  decision of  any  foreign  jurisdiction  or
                  jurisdictions    or   political    subdivision    thereof
                  applicable to the Owner, the Rigs or its operations;

            (iv)  Such workmen's  compensation or longshoremen's and harbor
                  workers'  insurance as  shall be  required by  applicable
                  law, including  endorsements for Outer Continental  Shelf
                  operations,  borrowed servant, voluntary compensation and
                  IN REM claims;

             (v)  Insurance (with a limit of  US$50,000,000 per occurrence)
                  naming  the Owner  and  the  Mortgagee assureds  and loss
                  payees,   as   their  interests   may   appear,   against
                  Operator's   Extra   Expense  ("O.E.E.")   liability   in
                  connection  with operations  conducted by  the Rigs  with
                  respect to Rigs operating  under a drilling contract with
                  a  financially  responsible  operator  acceptable to  the
                  Mortgagee that  indemnifies against  such O.E.E.  arising
                  out  of  blowout  (above  and below  ground),  cratering,
                  redrilling/recompletion,  cost   of  control,   clean-up,
                  containment seepage,  pollution, spillage  or leakage  in
                  connection with operations conducted  by the Rig, in form
                  and substance  satisfactory to  the Mortgagee,  and third
                  party liabilities  that  may  be  assumed by  a  contract
                  which  is legally enforceable  and in  form and substance
                  satisfactory  to  the  Mortgagee.   Deductibles  or self-
                  insured retentions shall not exceed US$250,000 and  shall
                  be for the account of the Owner;<PAGE>


            (vi)  Excess   seepage,  pollution,  clean-up  and  containment
                  liability  coverage in  the  amount  of US$50,000,000  in
                  respect   of  offshore   operations  in  excess   of  and
                  following    the   seepage,   pollution,   clean-up   and
                  containment  liability  coverage recited  in subparagraph
                  (v) above.

           (vii)  Subject to  the provisions  of this  subsection, War  and
                  Political  Risk  insurance  naming   the  Owner  and  the
                  Mortgagee as  assureds and  loss payees,  which shall  be
                  maintained  in the broadest forms  generally available to
                  Similar  Companies   in  the  United  States,  London  or
                  Scandinavian markets, and shall include coverage for  War
                  Risk  hull  and   machinery,  War  Risk   protection  and
                  indemnity, confiscation, expropriation,  nationalization,
                  deprivation  and inability  to  export.   Such  insurance
                  shall  be  in amounts,  with deductibles  or self-insured
                  retentions  not  to  exceed,  the corresponding  policies
                  described in  subparagraphs  (i)  and  (ii) above.    The
                  Shipowner  shall obtain  and maintain  War and  Political
                  Risk Insurance  for any Rig  operating in  an area deemed
                  to be hostile by  the Owner's underwriters  or protection
                  and indemnity club; 

          (viii)  Upon prior  written notice  to the  Owner, the  Mortgagee
                  may obtain  mortgagee's interest  insurance or breach  of
                  warranty endorsement in favor  of the Mortgagee with such
                  underwriters and under form  of policies approved  by the
                  Mortgagee in  an amount  equal to  at least  125% of  the
                  Commitments.   The Owner  shall reimburse  the Mortgagee,
                  upon the Mortgagee's written  demand, from time  to time,
                  the  reasonable  costs  and  expenses   incurred  by  the
                  Mortgagee in  effecting and  maintaining such mortgagee's
                  interest insurance on such  terms and in such amounts and
                  with  such  underwriters  as  the  Mortgagee  shall  deem
                  appropriate; and

            (ix)  Upon prior  written notice  to the  Owner, the  Mortgagee
                  may  obtain  an Additional  Perils-Pollution  endorsement
                  covering   the   possible   consequences   of   pollution
                  involving  the Rigs  including, without  limitation,  the
                  risk of  expropriation or sequestration of any Rig or the
                  imposition  of a lien  or encumbrance  of any kind having
                  priority  over this Deed  of Covenants  or the Mortgages.
                  The   Owner  shall  reimburse  the  Mortgagee,  upon  the
                  Mortgagee's  written  demand,  from  time  to  time,  the
                  reasonable costs  and expenses incurred  by the Mortgagee
                  in effecting  and maintaining on  such terms  and in such
                  amounts  and  with  such   underwriters  such  Additional
                  Perils-Pollution  insurance  coverage  as  the  Mortgagee
                  shall deem appropriate.

      (b)  The  Owner  will furnish  the Mortgagee  from  time to  time on
           request  and, in any event, at least annually a detailed report
           signed  by  a firm  of  marine insurance  brokers  or insurance
           companies  acceptable  to the  Mortgagee  with  respect to  the
           insurance  carried and  maintained on  each Rig,  together with<PAGE>


           their opinion that the insurance carried  is sufficient in that
           it  is customary  insurance which  an experienced  broker would
           effect  in  similar circumstances  with  Similar  Companies and
           that,  in  the opinion  of the  brokers,  it complies  with the
           provisions of this Section 6.01  and any requirements which the
           Mortgagee may have notified  to the Owner.  The Owner  will use
           its  best efforts  to  cause such  firm  to agree  to advise  a
           responsible officer of the Mortgagee in writing promptly of any
           default in  the payment of any premium or call and of any other
           act or  omission on  the  part of  the Owner  of  which it  has
           knowledge and which might  invalidate or render  unenforceable,
           in whole or in part, any insurance on any Rig. 

      (c)  Unless the  Mortgagee shall otherwise agree,  all insurance for
           the  rigs  shall  be  placed  through  independent  brokers  of
           recognized standing and with clubs or first class  underwriters
           reasonably acceptable  to the Mortgagee  and must (i)  name the
           Mortgagee  as  a named  assured  (except  as to  the  insurance
           referred   to  in  Section   6.01(a)(iv)  above),  but  without
           liability for premiums,  calls or assessments,  (ii) contain  a
           cancellation clause  providing that the  insurers undertake not
           to  exercise any right of  cancellation which they  may have by
           reason of  non-payment of  premiums or  calls when  due without
           giving  thirty   (30)  days'  prior  written   notice  of  such
           cancellation to  a responsible officer of the  Mortgagee and an
           opportunity of paying any such unpaid premium or call, (iii) if
           possible,  based  on  the  Owner's  best  efforts,  contain   a
           provision that the  insurance will not  be permitted to  lapse,
           terminate or  be materially modified without  thirty (30) days'
           prior  written notice being  given to a  responsible officer of
           the Mortgagee  (except  as  to the  insurance  referred  to  in
           Section 6.01(a)(ii) and (v) above for which fourteen (14) days'
           prior  written notice shall  be required  and (iv)  contain the
           agreement of  the insurer  that  any loss  thereunder shall  be
           payable to the trustee notwithstanding any action, inaction  or
           breach of  representation or warranty  by the Owner,  except to
           the  extent provided by subsection (d) hereof.  The Owner shall
           not  change underwriters or clubs  as to any  insurance for the
           Owner without prompt written notice to a responsible officer of
           the Mortgagee of any such change. 

      (d)  All amounts of  whatsoever nature payable  under any  insurance
           shall  be payable  to the Mortgagee  for distribution  first to
           itself, the Secured Creditors, the Co-Agents and thereafter  to
           the  Owner   or  others   as   their  interests   may   appear.
           Nevertheless,  until  otherwise  required by  the  Mortgagee by
           notice  to  the underwriters,  (i)  amounts  payable under  any
           insurance  on  the Rigs  with  respect  to  the protection  and
           indemnity  risks  shall  be  paid  directly  to  the  Owner  to
           reimburse it for any loss, damage or expense incurred by it and
           covered  by such  insurance  or  to  the  person  to  whom  any
           liability covered by such insurance has been incurred, and (ii)
           amounts payable  under any insurance  with respect to  the Rigs
           involving  any damage to any Rigs not constituting an actual or
           constructive total  loss, shall  be  paid by  the  underwriters
           directly for the repair, salvage or other charges  involved or,
           if the Owner shall have first fully repaired the damage or paid<PAGE>


           all of the salvage  or other charges, or  irrevocably committed
           to  do  so,  shall  be  paid  to  the  Owner  as  reimbursement
           therefore,  PROVIDED,  no amount  in excess of  an aggregate of
           US$2,000,000  per incident  shall be  paid from  any insurances
           without the prior written consent of the Mortgagee.

      (e)  In  the event  of  an actual  or constructive  total loss  or a
           compromised constructive total loss or requisition of any  Rig,
           all insurance  payments or compensation therefor  shall be paid
           to  the Mortgagee and applied to reduce the Total Commitment in
           accordance with  and subject to  the terms  of Section  3.03(c)
           and/or  (d) of  the  Credit Agreement.    The Owner  shall  not
           declare   or  agree  with  underwriters   that  any  Rig  is  a
           constructive  or compromised,  agreed or  arranged constructive
           total loss without the prior written consent of the Mortgagee.

      (f)  In the event  of an actual  or constructive  total loss of  any
           Rig, the Mortgagee  shall retain out of  the insurance payments
           received on account  of such loss and held  by the Mortgagee in
           accordance  with the  Credit  Agreement, any  sum or  sums that
           shall be or become  owing to the Mortgagee  under this Deed  of
           Covenants  or the Mortgages for the cost, if any, of collecting
           the insurance, which sum or sums shall become the sole property
           of  the Mortgagee,  and  pay  the  balance  to  the  Banks  for
           application pursuant  to and subject to  Section 3.03(c) and/or
           (d) of the Credit Agreement. 

      (g)  The Owner shall arrange for the execution of such guarantees as
           may  from  time  to time  be  required  by  any protection  and
           indemnity or War Risks association.

7     RIG COVENANTS
      -------------
7.1   The Owner  further covenants with the Mortgagee  that throughout the
Credit Facility Period the Owner will:

      (a)  maintain  its  existence as  a  company in  good  standing duly
           organized under the laws of England and Wales;

      (b)  keep the Rigs registered  in its name as Bahamian  flag vessels
           at the Port  of Nassau and  to do or allow  to be done  nothing
           whereby such registration may be forfeited or imperilled;

      (c)  not  cause or  permit the  Rigs to  be operated  in any  manner
           contrary  to  the laws,  regulations, treaties  and conventions
           (and all rules and regulations issued  thereunder) from time to
           time applicable  to their operation  or to  the maintenance  of
           their flag; 

      (d)  maintain and preserve the Rigs in good working order and repair
           in  accordance  with  good  commercial   maintenance  practices
           employed  in  the  offshore  oil  and  gas  contract   drilling
           industry,  ordinary wear and tear excepted, and in any event in
           such condition  as will entitle  them to the  classification A1
           drilling unit American Bureau of shipping, or to the equivalent
           classification  in any  other  classification society  of  like
           standing  approved by  the Mortgagee  in writing  and so  as to<PAGE>


           comply  with all  regulations  and  requirements (statutory  or
           otherwise) from  time to time applicable  to vessels registered
           as  Bahamian Ships and applicable to vessel or oil rigs trading
           in  any  jurisdiction to  which the  rigs  may, subject  to the
           provisions of this Deed, trade from time to time; 

      (e)  not without  the previous consent in writing  of the Mortgagee,
           which consent shall not  be unreasonably withheld, or make  any
           modification to  the  Rigs  which  would  or  might  materially
           interfere  with   the  suitability  of  the   Rigs  for  normal
           commercial offshore drilling operations;

      (f)  submit  the Rigs regularly to  such periodical or other surveys
           as  may be  required by  the classification  society and  if so
           required  to  supply  to  the Mortgagee  copies  of  all survey
           reports issued in respect thereof;

      (g)  permit the Mortgagee by surveyors or other persons appointed by
           it for that purpose to board any of the Rigs  at all reasonable
           times for the purpose  of inspecting the condition of  such Rig
           or  for  the purpose  of  satisfying  themselves  in regard  to
           proposed  or   executed  repairs  and  to   afford  all  proper
           facilities for such inspections;

      (h)  promptly pay  and discharge all debts,  damages and liabilities
           whatsoever which have  given or  may give rise  to maritime  or
           possessory liens  (other than  Permitted  Liens) on  or  claims
           enforceable against  the  Rigs  and  all  tolls,  dues,  taxes,
           assessments, governmental charges, fines and penalties lawfully
           charged on or in  respect of the  Rigs and all other  outgoings
           whatsoever in respect of the Rigs and in the event of arrest of
           any of the  Rigs pursuant to legal process, or  in the event of
           the  detention  of any  of the  Rigs  in exercise  or purported
           exercise  of any such lien  or claim as  aforesaid, procure the
           release of the Rig or Rigs, as appropriate, from such arrest or
           detention forthwith upon receiving  notice thereof by providing
           bail or otherwise as the circumstances may require; 

      (i)  not knowingly cause or permit the Rigs to trade with, or within
           the  territorial waters of any  country where the Insurances of
           the Rigs would be jeopardized or imperilled; 

      (j)  not employ the Rigs or allow the employment of any  of the Rigs
           in any  trade or business which  is unlawful under the  laws of
           any relevant jurisdiction or in carrying illicit or  prohibited
           goods or  in any manner whatsoever which  may render any of the
           Rigs liable to destruction, seizure or confiscation and  in the
           event of hostilities in any part  of the world (whether war  be
           declared or not) not  employ the Rigs or suffer  the employment
           of any of the Rigs in carrying any contraband goods or to enter
           or  trade  to any  zone which  is declared  a  war zone  by any
           government  or by  the War  Risks insurers  of the  Rigs unless
           there  shall have been effected  by the Owner  (at its expense)
           such  special, additional  or modified  insurance cover  as the
           Mortgagee may require;<PAGE>


      (k)  promptly furnish to  the Mortgagee all  such information as  it
           may from  time to time  reasonably require regarding  the Rigs,
           the employment of the Rigs, position and engagements; 

      (l)  notify   the  Mortgagee   forthwith  by   telecopy,  thereafter
           confirmed by letter of:

             (i)  any casualty to any of the Rigs which is or is likely  to
                  be a Major Casualty, and

            (ii)  any occurrence  in consequence  whereof any  of the  Rigs
                  has become  or is, by the  passing of  time or otherwise,
                  likely to become a Total Loss, and

           (iii)  any requirement or recommendation  made by any insurer or
                  classification society  or  by  any  competent  authority
                  which is not  complied with within  the time  provided by
                  the   insurer,   classification  society   or   competent
                  authorities,  including  any extensions  granted thereby,
                  and

            (iv)  any  arrest  of  any  of  the  Rigs  or  the  exercise or
                  purported exercise  of any lien on any of the Rigs or any
                  requisition of any of the Rigs for hire; and
      
      (m)  keep each Mortgage  registered against the  respective Rigs  as
           valid first priority mortgages,  to carry on board each  of the
           Rigs a certified  copy of  the Mortgage  and this  Deed and  to
           place and  maintain in a  conspicuous place  in the  navigation
           room and  the  Master's cabin  of  each of  the  Rigs a  framed
           printed  notice stating that such Rig is mortgaged by the Owner
           to the Mortgagee.

7.2   The Owner  further covenants with the Mortgagee  that throughout the
Security Period the Owner will:

      (a)  shall not cause or permit the Rigs to be operated in any manner
           contrary to law, shall not abandon  the Rigs in a foreign port,
           shall not engage  in any unlawful trade  or violate any law  or
           carry  any  cargo  that  shall  expose  the  Rigs  to  penalty,
           forfeiture or capture, and shall not do, or suffer or permit to
           be done,  anything  which can  or  may injuriously  affect  the
           registration  or enrollment of the  Rigs under the  laws of the
           United  States and  will  at  all  times  keep  the  Rigs  duly
           documented thereunder;

      (b)  notify   the  Mortgagee   forthwith  by   telecopy,  thereafter
           confirmed by letter if a  libel be filed against any Rig  or if
           any Rig  is  otherwise  attached, levied  upon  or  taken  into
           custody  by  virtue  of  any legal  proceeding  in  any  court,
           tribunal or governmental authority (de jure or de facto), or if
           any Rig suffers damage in excess of US$500,000, in the case  of
           any such  libel or  attachment, within  thirty  (30) days  will
           cause  said  Rig  to  be  released  by  posting  bond,  posting
           alternative security or other means and all liens thereon to be
           discharged, and  will promptly notify the  Mortgagee thereof in
           the manner aforesaid; and<PAGE>


      (c)  shall not sell,  bareboat charter (other  than to Holdings  and
           its   Subsidiaries  (as  defined  in  the  Credit  Agreement)),
           transfer  or  mortgage any  of  the  Rigs  without the  written
           consent of  the Mortgagee  first  having been  obtained,  which
           consent shall not  be unreasonably withheld.   Any such written
           consent to any one sale, bareboat charter, transfer or mortgage
           shall not  be construed to  be a waiver of  this provision with
           respect  to any  subsequent  proposed  sale, bareboat  charter,
           transfer  or  mortgage  of any  Rig  shall  be  subject to  the
           provisions of this  Deed and  the respective  Mortgage and  the
           lien thereof, and shall not affect the liabilities of the Owner
           hereunder.

8     PROTECTION OF SECURITY
      ----------------------
8.1   The Mortgagee shall without prejudice to its other rights and powers
under  the  Mortgages and  this  Deed and  the other  Credit  Documents be
entitled (but  not bound) at any time and as  often as may be necessary to
take any such action as it may in its discretion think fit for the purpose
of protecting or maintaining the security created by the Mortgage and this
Deed  (including, without  limitation, such  action as  is referred  to in
Clause 8.2) and  each and  every expense, liability,  or loss  (including,
without limitation, legal fees) so  incurred by the Mortgagee in or  about
the  protection or maintenance of the said security together with interest
payable thereon under Clause 3.1(c) shall be repayable to it  by the Owner
on demand.

8.2   Without prejudice to the generality of Clause 8.1:

      (a)  if the Owner does not comply with the provisions of Clause  6.1
           or any of them, the Mortgagee shall be entitled (but not bound)
           to  effect or to replace  and renew and  thereafter to maintain
           Insurances in such manner as in its discretion it may think fit
           and to  require that all policies, contracts  and other records
           relating   to  the   Insurances   (including  details   of  and
           correspondence  concerning  outstanding  claims)  be  forthwith
           delivered  to such brokers as the Mortgagee may nominate and to
           collect, recover, compromise and give a good discharge  for all
           claims  then   outstanding  or  thereafter  arising  under  the
           Insurances or  any of them  and to take  over or  institute (if
           necessary  using the name of the Owner) all such proceedings in
           connection  therewith   as  the  Mortgagee   in  its   absolute
           discretion may think fit and to permit the brokers through whom
           the collection  or recovery  is effected  to  charge the  usual
           brokerage therefor; and

      (b)  if  the Owner  does not  comply with  the provisions  of Clause
           7.1(d)  and/or 7.1(g)  or any  of them  the Mortgagee  shall be
           entitled (but not  bound) to  arrange for the  carrying out  of
           such  repairs to  and/or  surveys  of  the  Rigs  as  it  deems
           expedient or necessary; and

      (c)  if  the Owner  does not  comply with  the provisions  of Clause
           7.1(h) or any of  them the Mortgagee shall be entitled (but not
           bound)  to  pay  and  discharge  all such  debts,  damages  and
           liabilities  and  all  such  tolls,  dues,  taxes, assessments,
           charges, fines, penalties  and other outgoings  as are  therein<PAGE>


           mentioned  and/or  to  take  any  such  measures  as  it  deems
           expedient or necessary for the purpose of securing  the release
           of the Rig or Rigs, as the case may be.

9     ENFORCEABILITY AND MORTGAGEE'S POWERS
      -------------------------------------
9.1   Upon the happening of any of the Events of Default  specified in the
Credit  Agreement,  and  giving effect  to  any  applicable  grace periods
specified in  the Credit Agreement but without the necessity for any court
order or  declaration in any jurisdiction  to the effect that  an Event of
Default  has occurred the security  constituted by the  Mortgages and this
Deed shall become immediately enforceable and the power  of sale and other
powers conferred by law shall be immediately exercisable and the Mortgagee
shall be entitled, as  and when it may see  fit, to put into force  and to
exercise all  the powers possessed by  it as mortgagee and  chargee of the
Rigs and in particular:

      (a)  to  take  possession of  any of  the  Rigs whether  actually or
           constructively and/or otherwise to  take control of any  of the
           Rigs wherever  such Rig or Rigs  may be and cause  the Owner or
           any  other person in possession  of such Rig  or Rigs forthwith
           upon  demand to  surrender the  same to  the  Mortgagee without
           legal process  and without liability  of the Mortgagee  for any
           losses  or  damages incurred  by  such  actual or  constructive
           taking  and without having to  render accounts to  the Owner in
           connection therewith;

      (b)  to require  that all policies, contracts,  certificate of entry
           and other records relating to the Insurances (including details
           of   and  correspondence  concerning   outstanding  claims)  be
           forthwith delivered to or to the order of the Mortgagee;

      (c)  to collect, recover, compromise and  give a good discharge  for
           any and all  moneys or  claims for moneys  then outstanding  or
           thereafter   arising  under   the  Insurances   or  Requisition
           Compensation and to permit any brokers through whom  collection
           or recovery is effected to charge the usual brokerage therefor;

      (d)  to take over or  institute (if necessary using the name  of the
           Owner) all such  proceedings in connection  with the Rigs,  the
           Insurances, or any Requisition Compensation as the Mortgagee in
           its absolute discretion thinks fit and to discharge,  compound,
           release or compromise  claims against the  Owner in respect  of
           the Rigs  which have given  or may give  rise to any  charge or
           lien  on  the  Rigs  or which  are  or  may  be  enforceable by
           proceedings against  the Rig  or  Rigs provided  the  Mortgagee
           shall  act in  a commercially  reasonable manner  in accordance
           with Section 9-504 of the New York Uniform Commercial Code;

      (e)  to sell any of the Rigs  or any share therein with prior notice
           to   the  Owner,  and  with  or  without  the  benefit  of  any
           charterparty or  other contract for the employment  of such Rig
           or  Rigs, by public auction  or private contract  at such place
           and upon such  terms (including, without  limitation, on  terms
           such  that payment  of some  or all  of the  purchase price  be
           deferred)  as  the Mortgagee  in  its  absolute discretion  may
           determine with power  to postpone any such sale,  without being<PAGE>


           answerable for any  loss occasioned by  such sale or  resulting
           from postponement thereof, and/or itself to purchase the Rig or
           Rigs, as the case may be, at any such public auction and to set
           off  the  purchase  price  against  all  or  any  part  of  the
           Obligations; notice  of such  public  auction or  private  sale
           contract shall be given in the following manner:

             (i)  by publishing such notice for ten  consecutive days in  a
                  daily  newspaper  of  general  circulation  published  in
                  Dallas, Texas;

            (ii)  if the  place of sale should  not be  Dallas, Texas, then
                  also  by  publication  of a  similar  notice  in  a daily
                  newspaper, if any, published at the place of sale; and

           (iii)  by mailing a  similar notice to the  Owner on the day  of
                  first publication;

      (f)  to manage, insure, maintain and repair the Rig or Rigs, as  the
           case may be, and to charter, employ,  sail or lay up the Rig or
           Rigs, as the case may  be, in such manner, upon such  terms and
           for such  period as  the Mortgagee  in its absolute  discretion
           deems expedient and  for the purposes  aforesaid the  Mortgagee
           shall  be  entitled to  do all  acts  and things  incidental or
           conducive  thereto  and  in  particular  to  enter  into   such
           arrangements  respecting the Rig or  Rigs, as the  case may be,
           and   the   insurance,    management,   maintenance,    repair,
           classification, chartering  and employment of the  Rig or Rigs,
           as the  case may be, in  all respects as if  the Mortgagee were
           the owner of  the Rigs  and without being  responsible for  any
           loss thereby incurred, except as expressly provided in  Section
           9.4 below;

      (g)  to recover  from the Owner on demand  any expenses, liabilities
           or losses as  may be incurred by the Mortgagee  in or about the
           exercise  of the  power vested  in the  Mortgagee under  Clause
           9.1(f);

      (h)  subject to the terms  of the Mortgages, this Deed  of Covenants
           and  the Credit Documents generally,  to recover from the Owner
           on demand each and every expense, liability or loss incurred by
           the Mortgagee in or about  or incidental to the exercise  by it
           of any of the powers aforesaid.

9.2   The  Mortgagee shall not  be obliged to  make any enquiry  as to the
nature or sufficiency of any payment received by it under the Mortgage and
this Deed (or  either of them) or to make any  claim under this Deed or to
enforce any  rights and benefits assigned to the Mortgagee by this Deed or
to which the Mortgagee may at any time be entitled hereunder.

9.3   Subject to the  proviso in  Section 9.4 below,  neither the  Secured
Creditors nor  their agents, managers, officers,  employees, delegates and
advisers  shall be liable for  any expense, claim,  liability, loss, cost,
damage  or expense incurred or arising in  connection with the exercise or
purported  exercise  of  any  rights,  powers and  discretions  under  the
Mortgages  and this  Deed (or  either  of them)  in the  absence of  gross
negligence or wilful misconduct.<PAGE>


9.4   The  Mortgagee shall not  by reason of the  taking possession of the
Rig   or  Rigs,   as  the   case  may   be,  be   liable  to   account  as
mortgagee-in-possession  or  for anything  except  actual  receipts or  be
liable for  any loss upon realization  or for any default  or omission for
which a mortgagee-in-possession might be liable PROVIDED, HOWEVER, that so
long  as the  Owner  shall not  have abandoned  the  Rig or  Rigs, if  the
Mortgagee shall have become a mortgagee-in-possession, the Owner shall not
be liable  to third parties for  damages or losses arising  from and after
the date the Mortgagee becomes mortgagee-in-possession, except for damages
or losses arising from the acts of the Owner.

9.5   Upon  any sale  of any  of  the Rigs  or  any share  therein by  the
Mortgagee, the purchaser shall not be bound to see or  enquire whether the
power  of sale  of  the Mortgagee  has  become exercisable  in  the manner
provided in this Deed and the sale  shall be deemed to be within the power
of  the Mortgagee and the receipt of  the Mortgagee for the purchase money
shall  effectively discharge the purchaser who shall not be concerned with
the  manner of  application  of the  proceeds of  sale  or be  in  any way
answerable therefor.

9.6   If at  any  time  after  an  Event of  Default  and  declaration  of
acceleration  pursuant to  this Section  9, and  prior to  any foreclosure
action  having  been  taken  by the  Mortgagee  under  any  of  the Credit
Documents to foreclose upon  the security provided by such  documents, the
Owner  offers completely  to cure  all Events  of Default  and to  pay all
expenses,  advances and damages to the Mortgagee consequent to such Events
of Default, with interest at  the rate provided for in Section  1.08(c) of
the Credit Agreement, then the Mortgagee may accept such offer and payment
and restore the Owner to its  former position.  However, such action shall
not  affect any subsequent  Event of Default  or impair any  rights of the
Mortgagee consequent thereto.

9.7   Immediately upon  the occurrence of an  Event of Default, or  of any
event which  with the notice or lapse of time  or both would constitute an
Event  of Default,  the Owner shall  notify a  responsible officer  of the
Mortgagee of such occurrence in writing setting forth in reasonable detail
the circumstances surrounding  such Event  of Default or  other event  and
what action the Owner proposes to take with respect thereto.


10    APPLICATION OF MONEYS
      ---------------------
10.1  (a)  All moneys received by  the Mortgagee in respect of sale of any
           of the Rigs or any share  therein; in respect of recovery under
           the  Insurances;  or  in  respect of  Requisition  Compensation
           shall, subject to the provisions of  Section 3.03(c) and/or (d)
           of the Credit Agreement, be applied as follows:

             (i)  first, to the payment of all amounts  owing the Mortgagee
           of the type described in clauses (ii) and (iii) of Recital D;

            (ii)  second,   to   the  extent   moneys   remain  after   the
           application  pursuant to  the preceding  clause (i),  an amount
           equal  to the  outstanding  Obligations shall  be  paid to  the
           Secured Creditors  as provided  in  Clause 10.1(c),  with  each
           Secured Creditor receiving an amount equal to such  Obligations
           held by  it or, if the proceeds are insufficient to pay in full<PAGE>


           all  such Obligations, its Pro Rata Share (as defined below) of
           the amount remaining to be distributed; and

           (iii)  third, to the extent  moneys remain after the application
           pursuant to the  preceding clauses (i) and  (ii), and following
           the termination of Mortgage and this Deed of Covenants pursuant
           to Clause 4.4, any surplus then remaining shall be  paid to the
           Owner, subject, however,  to the  rights of the  holder of  any
           then existing  Lien of  which the  Mortgagee has  actual notice
           (without investigation).

      (b)  For purposes of this  Deed of Covenants "Pro Rata  Share" shall
           mean, when  calculating a  Secured  Creditor's portion  of  any
           distribution  or  amount in  respect  of  any Obligations,  the
           amount (expressed  as  a percentage)  equal to  a fraction  the
           numerator  of   which  is  the  then  unpaid   amount  of  such
           Obligations owing to or  held by such Secured Creditor  and the
           denominator of which is the then outstanding amount of all such
           Obligations.  For purposes of determining the amount payable to
           each  Secured  Creditor, the  Mortgagee  shall  be entitled  to
           request each Secured Creditor to furnish it with written notice
           of  the amount  of Obligations  then owed  to it  and shall  be
           entitled to  reply upon  the amounts  stated therein  in making
           such distribution.

      (c)  All payments required to be made to Secured Creditors hereunder
           shall  be made  to the  Administrative Agent  under the  Credit
           Agreement for the account of the Secured Creditors.

      (d)  For purposes  of applying payments received  in accordance with
           this Clause 10.1, the Mortgagee shall be entitled to reply upon
           (i)  the Administrative  Agent under  the Credit  Agreement and
           (ii)  the  Secured Creditors  for  a  determination (which  the
           Administrative  Agent  and  each  Secured  Creditor,  by  their
           acceptance of the benefits  of this Deed shall be  obligated to
           provide  upon  request of  the  Mortgagee)  of the  outstanding
           Obligations  owed  to the  Secured  Creditors.   Unless  it has
           actual knowledge  (including by way  of written  notice from  a
           Secured  Creditor) to  the contrary,  the  Administrative Agent
           under the Credit Agreement, in furnishing  information pursuant
           to  the  preceding  sentence,  and  the  Mortgagee,  in  acting
           hereunder, shall be entitled to assume that  (x) no obligations
           other than principal, interest and regularly accruing fees  are
           owing to any Secured Creditor.

11    FURTHER ASSURANCES
      ------------------
11.1  The Owner shall  execute and do all such assurances, acts and things
as the Mortgagee in its absolute discretion may require for:

      (a)  perfecting or  protecting the security created  (or intended to
           be created) by the Mortgages and this Deed; or

      (b)  preserving or protecting any of the rights of the Mortgagee and
           the other Secured Creditors  under the Mortgages and  this Deed
           (or either of them); or<PAGE>


      (c)  ensuring  that the  security constituted  by the  Mortgages and
           this  Deed and the covenants and obligations of the Owner under
           this  Deed shall enure to  the benefit of  any such assignee of
           the Mortgagee as is referred to in Clause 16.3; or

      (d)  enforcing the security  constituted by the  Mortgages and  this
           Deed  on or  at  any time  after  the  same shall  have  become
           enforceable; or

      (e)  the exercise of  any power, authority  or discretion vested  in
           the Mortgagee under the  Mortgages and this Deed (or  either of
           them),

in  any such  case, forthwith  upon  demand by  the Mortgagee  and at  the
expense of the Owner.

12    POWER OF ATTORNEY
      -----------------
12.1  The Owner,  by way of security and in order more fully to secure the
performance of the Obligations, hereby irrevocably appoints the  Mortgagee
as  its attorney for  the duration of  the Credit Facility  Period for the
purposes of:

      (a)  doing  in  its name  all acts  and  executing, signing  and (if
           required) registering in its name all documents which the Owner
           itself could do, execute,  sign or register in relation  to the
           (including without limitation, transferring title to any of the
           Rigs to a third party)  Provided  however that such power shall
           not  be exercisable by or on  behalf of the Mortgagee unless an
           Event of Default  specified in the Credit Agreement  shall have
           occurred; and

      (b)  executing,   signing,  perfecting,  doing   and  (if  required)
           registering every such further assurance document, act or thing
           as is referred to in Clause 11.

12.2  The exercise of such power as is referred to in Clause 12.1(a) by or
on  behalf of  the Mortgagee  shall not  put any  person dealing  with the
Mortgagee upon  any enquiry as to whether the Mortgages and this Deed have
become enforceable nor shall such person be in any way  affected by notice
that  the Mortgages  and this  Deed  have not  become enforceable  and, in
relation  to both  Clauses  12.1(a)  and  12.1(b),  the  exercise  by  the
Mortgagee  of such  power shall  be conclusive  evidence of  its  right to
exercise the same.

13    INDEMNITIES
      -----------
13.1  Subject to the provisions of this Deed and the Credit Agreement, the
Owner will indemnify  and save harmless each of the  Secured Creditors and
each agent or attorney appointed under  or pursuant to this Deed (each, an
"Indemnitee") from and against any and all  expenses, claims, liabilities,
losses,  taxes, costs, duties, Fees and charges suffered, incurred or made
by such Secured Creditor or such agent or attorney:

      (a)  in  the exercise or purported exercise of any rights, powers or
           discretions  vested in them pursuant to  the Mortgages and this
           Deed (or either of them); or<PAGE>


      (b)  in  the  preservation  or  enforcement  of the  rights  of  the
           Mortgagee  under the  Mortgages  and this  Deed  (or either  of
           them); or

      (c)  on  the release  of  the Rigs  or any  share  therein from  the
           security created by the  Mortgages and this Deed (or  either of
           them),

and the Secured Creditors and  each such agent or attorney may  retain and
pay all sums in respect of the same out of money received under the powers
conferred  by the Mortgages and  this Deed (or either of  them).  All such
amounts recoverable by  such Secured  Creditor or such  agent or  attorney
shall be recoverable on a full indemnity basis.

13.2  Without limiting the foregoing Clause 13.1, the Owner hereby further
indemnifies and holds  harmless each  of the Secured  Creditors and  their
respective officers,  directors, employees, attorneys and  agents from and
against  any and  all liabilities,  losses, obligations,  claims, damages,
penalties, causes  of  action,  costs  and  expenses  (including,  without
limitation,  reasonable attorneys'  fees  and  expenses, consultant  fees,
investigation and laboratory fees) imposed upon or incurred by or asserted
against  them, or  any of  them, by  reason of  (a) an actual,  alleged or
threatened  Environmental  Incident; (b)  any  personal injury  (including
wrongful death) or property  damage (real or personal) or  economic damage
arising  out of  or  related  to  such  Environmental  Incident;  (c)  any
Environmental Claim brought or  threatened, or settlement reached; or  (d)
any violation  of laws,  orders, regulations,  requirements or  demands of
government authorities  relating to Hazardous Materials  at, or discharged
from  any of  the  Rigs PROVIDED,  HOWEVER,  that in  the  event that  the
Mortgagee shall have become a mortgagee-in-possession in respect of one or
more  of the Rigs and the Owner shall not have abandoned such Rig or Rigs,
this indemnity shall  not cover  claims of third  parties arising from  or
after the Mortgagee becomes mortgagee-in-possession, except for claims  of
third parties arising from the acts of the Owner.

13.3  If,  under any applicable law or regulation, and whether pursuant to
a judgment being made or registered  against the Owner or the  liquidation
of the Owner or  for any other reason, any payment  under or in connection
with the Mortgages and this Deed (or any  of them) is made or falls to  be
satisfied in a currency  (the "payment currency") other than  the currency
in which such payment is due under or in connection with the Mortgages and
this Deed (the "contractual currency"), then to the extent that the amount
of  such payment actually received  by the Mortgagee,  when converted into
the  contractual currency  at the  rate of  exchange, falls  short of  the
amount due  under or in connection  with the Mortgages and  this Deed, the
Owner,  as a separate and independent obligation, shall indemnify and hold
harmless  the Mortgagee  against the  amount of such  shortfall.   For the
purposes of this Clause 13.3,  "rate of exchange" means the rate  at which
the  Mortgagee is  able on  the date  of such  payment (or,  if it  is not
practicable for  the Mortgagee to  purchase the contractual  currency with
the payment currency on the date of  such payment, at the rate of exchange
as soon  afterwards as  it  practicable for  the Mortgagee  to  do so)  to
purchase the contractual currency with the payment currency and shall take
into account any premium and other costs of exchange with respect thereto.

14    RIGHTS OF OWNER
      ---------------<PAGE>


14.1  Until an Event of Default shall have occurred, the Owner:

      (a)  shall be suffered and permitted to retain actual possession and
           use of the Rigs;

      (b)  subject to Section 8.02(b) of the Credit  Agreement, shall have
           the  right, from  time to  time in  its discretion  and without
           application to  the Mortgagee, and without  obtaining a release
           thereof by the  Mortgagee, to  dispose of, free  from the  lien
           hereof, any boilers,  engines, machinery, masts, spars,  sails,
           rigging,  boats, anchors,  chains, tackle,  apparel, furniture,
           fittings,  drilling  equipment,  pumps,  drill  pipes, collars,
           racking,  housing,  spare   parts  and  supporting   inventory,
           vehicles or living  quarters or any other  appurtenances of the
           Rigs.

15    COMMUNICATIONS
      --------------
15.1  The provisions of Clause  12.03 of the Credit Agreement  shall apply
in relation to any notice, demand or other communication under this Deed.

16    ASSIGNMENTS
      -----------
16.1  The Mortgages and this Deed shall be binding upon and shall enure to
the  benefit of the Owner  and the Secured  Creditors and their respective
successors and permitted assigns  and references in the Mortgage  and this
Deed to either of them shall be construed accordingly.

16.2  The Owner may  not assign or transfer all or any  part of its rights
and/or obligations under the Mortgages and this Deed (or either of them).

16.3  The Mortgagee may  assign or transfer all or any  part of its rights
or obligations under the Mortgages and this Deed to any permitted assignee
or transferee of  all or any  such part of  its rights and/or  obligations
under the  Credit Agreement on the terms  therein provided.  The Mortgagee
shall notify the Owner promptly following any such assignment, transfer or
change.

17    MISCELLANEOUS
      -------------
17.1  If at any time any one or more of the provisions in this Deed  is or
becomes invalid,  illegal or unenforceable in any respect under any law or
regulation,  the validity,  legality and  enforceability of  the remaining
provisions  of this  Deed shall  not be  in any  way affected  or impaired
thereby.

17.2  The Mortgagee,  at any time and  from time to time,  may delegate by
power of attorney  or in any other manner to any  person or persons all or
any of  the powers,  authorities and  discretions which  are for  the time
being exercisable by the  Mortgagee under the Mortgages and this  Deed (or
any of  them) in relation to  the Mortgaged Premises or  any part thereof.
Any such  delegation may  be  made upon  such terms  and  subject to  such
regulations as the Mortgagee may think fit.  The Mortgagee shall not be in
any way liable or responsible to the Owner  for any loss or damage arising
from  any act,  default, omission or  misconduct on  the part  of any such
delegate.<PAGE>


17.3  This Deed may  be executed  in several counterparts,  each of  which
shall be an original, but which  together shall constitute but one and the
same document.

17.4  If there is  a conflict between the provisions of  this Mortgage and
the Credit  Agreement,  the Credit  Agreement  shall govern,  except  with
respect to Section 18 below.

18    LAW AND JURISDICTION
      --------------------
18.1  This Deed shall  be governed  by, and construed  in accordance  with
Bahamian Law.

18.2  The  Owner agrees  that the  Mortgagee shall  have the  liberty, but
shall  not be  obligated, to  take any  proceedings in  the courts  of any
jurisdiction  to protect and enforce the security hereby constituted or to
enforce  any provision  of  the  Security  Documents  or  to  enforce  the
Obligations.   For the  purpose of any proceedings for the  enforcement of
this Deed and the  other Security Documents,  the Owner hereby submits  to
the  jurisdiction of  the courts  of the  Bahamas,  the state  and federal
courts located  in New York, New  York and the courts  of any jurisdiction
where  the Rig may  be found, and  the Owner  agrees to accept  service in
respect of any such  proceeding by registered or certified  mail addressed
in accordance with the Credit Agreement.
 
18.3  Without  prejudice to  the generality  of Clause 18.2  the Mortgagee
shall have the right to arrest and take action against the Rig at whatever
place the Rig shall be found lying and for the purpose of any action which
the Mortgagee  may bring before  the Courts of such  jurisdiction or other
judicial authority and  for the purpose of any  action which the Mortgagee
may  bring against  the Rig,  any writ,  notice,  judgment or  other legal
process or documents may (without prejudice to any other method of service
under applicable law) be served upon the Master of the Rig (or upon anyone
acting as the Master) and such service shall be deemed good service on the
Owner for all purposes.<PAGE>



IN WITNESS  whereof  the parties hereto have  caused this Deed to  be duly
executed the day and year first before written.


OWNER
- -----
SIGNED SEALED and DELIVERED           )
on behalf of ENSCO OFFSHORE           )
U.K. LTD.                             )
by Robert O. Isaac                    )                                
its duly authorized Secretary         )
in the presence of: Robert Friedrich  )

           Witness:



MORTGAGEE
- ---------
SIGNED SEALED and DELIVERED           )
on behalf of CHRISTIANIA BANK OG      )
KREDITKASSE, NEW YORK BRANCH          )
by                                    )                                
its duly authorized attorney-in-fact  )
in the presence of:                   )

           Witness:


SIGNED SEALED and DELIVERED           )
on behalf of CHRISTIANIA BANK OG      )
KREDITKASSE, NEW YORK BRANCH          )
by                                    )                                
its duly authorized attorney-in-fact  )
in the presence of:                   )

           Witness:<PAGE>


                                                               EXHIBIT I
                                                               ---------

               FORM OF AON NATURAL RESOURCES WORLDWIDE OPINION
               -----------------------------------------------



February 27, 1997



Christiania Bank og Kreditkasse,
New York Branch, as Administrative Agent
and Collateral Agent


Re:   Insurance Provided Pursuant to the
      Provisions of the Vessel Mortgages
      Given by, respectively, ENSCO Offshore Company,
      ENSCO Offshore U.K. Limited and ENSCO Offshore 
      Company II


To Whom It May Concern:


Aon  Risk Services,  Natural Resources  Group is  the Insurance  Broker of
Record appointed by ENSCO Offshore Company, et al.

This opinion is  given with the reservation that our  competence and skill
as  an Insurance  Broker can only  be relied  upon as  to matters normally
considered within the scope of an Insurance Broker.

In placing  these insurances  with respect  to the  ENSCO  Fleet, we  have
undertaken to provide  ENSCO with  insurances which are,  in our  opinion,
sufficient  in  the  sense that  they  are  customary  insurance which  an
experienced Broker  would effect in  these circumstances.  It  is also our
opinion that these insurances  comply with the  provisions of Clause 6  of
the  U.S. Fleet  Mortgage, Clause  6 of  the  Bahamian Fleet  Mortgage and
Clause 6 of the Liberian Fleet Mortgage.

Pursuant to instructions received from  ENSCO, we hereby agree to use  our
best endeavors.

1.  to provide  evidences of insurance or copies of any Insurance Slips or
    Contracts, and Policies when issued, and any renewal of such  Policies
    or new Policies terms as may be agreed; and

2.  to  arrange for agreed  Loss Payable Clause(s)  to be  included on the
    Policies, and

3.  have endorsed on each and every Policy as and when the same  is agreed
    a Notice of Assignment, and<PAGE>


4.  to advise you as  soon as practicable if we cease  to be the Broker of
    the Assured or in the event of  any material changes which may be made
    to the terms of the insurances and renewal thereof.

Our  above undertakings  are given  subject to  our lien,  if any,  on the
Policies for premiums and subject to insurers right of cancellation in the
event of  default in payment of  such premiums but we  undertake to advise
you as soon as practicable if any premiums are not paid to us by  due date
and not  to exercise such rights  of cancellation, if  any, without having
given you ten days notice in writing, whether by letter, telex, cable, and
a reasonable opportunity of paying any premiums outstanding.  (In the case
of War  Risks  the terms  of  the Automatic  Termination of  Cover  Clause
contained in the War  Risk Policies shall override any  undertakings given
by us as Brokers.)

Finally it is understood that all claims shall be collected through us, as
Brokers.

Yours very truly,



/s/ William F. Moore
- ----------------------     
William F. Moore
Senior Vice President<PAGE>

                                                               EXHIBIT J
                                                               ---------





                            FORM OF PLEDGE AGREEMENT
                            ------------------------

        PLEDGE  AGREEMENT, dated  as  of February  __, 1997  (as  amended,
modified or supplemented from time to time, this "Agreement"), made by the
undersigned (the "Pledgor"), in favor  of CHRISTIANIA BANK OG KREDITKASSE,
NEW YORK BRANCH, as Collateral Agent  (the "Pledgee"), for the benefit  of
the Creditors (as  defined below).   Except as  otherwise defined  herein,
terms used herein and  defined in the Credit Agreement (as  defined below)
shall be used herein as therein defined.


                              W I T N E S S E T H :


        WHEREAS, ENSCO International Incorporated,  ENSCO Delaware,  Inc.,
ENSCO Offshore Company, ENSCO Offshore U.K. Limited, Dual Holding Company,
the  lending institutions from time  to time party  thereto (the "Banks"),
Christiania Bank og Kreditkasse, New York  Branch and Den norske Bank ASA,
New York Branch,  as co-agents  and Christiania Bank  og Kreditkasse,  New
York  Branch, as administrative agent and  security trustee (together with
any successor  agent, the  "Administrative Agent," and  together with  the
Pledgee  and the  Banks,  the "Creditors"),  have  entered into  a  Credit
Agreement,  dated as  of  February  __,  1997  (as  amended,  modified  or
supplemented from time to time, the "Credit Agreement"), providing for the
making  of Loans to  the Borrowers and the  issuance of, and participation
in,  Letters of  Credit for  the  account of  the U.S.  Borrowers, all  as
contemplated therein;

        WHEREAS,  pursuant  to  the  Credit  Agreement  the   Pledgor  has
guaranteed  to  the  Creditors the  payment  when  due  of the  Guaranteed
Obligations (as defined in the Credit Agreement);

        WHEREAS, it is  a condition precedent to the extensions  of credit
under the Credit Agreement that the Pledgor shall have executed and deliv-
ered to the Pledgee this Agreement;

        WHEREAS, the Pledgor desires to  execute this Agreement to satisfy
the conditions described in the preceding paragraph; and


        NOW, THEREFORE,  in consideration of the  benefits accruing to the
Pledgor, the receipt and sufficiency of which are hereby acknowledged, the
Pledgor hereby  makes the following representations and  warranties to the
Pledgee and hereby covenants and agrees with the Pledgee as follows:

        1.   SECURITY  FOR OBLIGATIONS.   This  Agreement  is made  by the
Pledgor for the benefit of the Creditors to secure:<PAGE>


          (i)  the Pledgor's guaranty of the full and prompt payment  when
    due (whether at the stated maturity, by acceleration or otherwise)  of
    all  obligations  and liabilities  of each  Borrower, now  existing or
    hereafter incurred  under, arising out  of or in  connection with  any
    Credit  Document  to  which such  Borrower  is  a  party  and the  due
    performance and compliance  by the Pledgor and each Borrower  with the
    terms of each Credit Document;

         (ii)  any and  all  sums advanced  by  the  Pledgee in  order  to
    preserve  the  Collateral (as  hereinafter  defined)  or preserve  its
    security interest in the Collateral;

        (iii)  in  the  event  of any  proceeding  for  the  collection or
    enforcement of any indebtedness, obligations, or  liabilities referred
    to in clauses (i) and (ii) above, after an Event of Default shall have
    occurred  and  be continuing,  the  reasonable  expenses of  retaking,
    holding, preparing for  sale or lease, selling or  otherwise disposing
    or realizing on the  Collateral, or of any exercise by the  Pledgee of
    its  rights hereunder,  together with  reasonable attorneys'  fees and
    court costs; and

         (iv)  all amounts paid by any  Creditor as to which such Creditor
    has the right to reimbursement under Section 11 of this Agreement;

all  such obligations, liabilities, sums and expenses set forth in clauses
(i) through (iv)  of this Section 1  being herein collectively  called the
"Obligations."

        2.  DEFINITION OF SHARES.   As used herein the term "Shares" shall
mean all of the issued and outstanding shares of capital stock at any time
owned by the  Pledgor of  ENSCO Offshore Company,  a Delaware  corporation
(the "Pledged Company").   The Pledgor represents and warrants that on the
date  hereof (i)  the Capital  Stock of  the Pledged  Company held  by the
Pledgor consists of  the number and  type of shares  described in Annex  A
hereto and (ii) such shares constitute 100% of the issued  and outstanding
capital stock of the Pledged Company.

        3.  PLEDGE OF SHARES, ETC.

        3.1.  Pledge.  To secure the Obligations  and for the purposes set
forth in Section 1 hereof, the Pledgor hereby:   (i) grants to the Pledgee
a security  interest in all of  the Collateral owned by  the Pledgor; (ii)
pledges and deposits as security with the Pledgee all of  the Shares owned
by  the  Pledgor  on  the  date   hereof,  and  delivers  to  the  Pledgee
certificates therefor,  accompanied by undated stock  powers duly executed
in  blank by  the Pledgor, or  such other  instruments of  transfer as are
acceptable  to the  Pledgee; and  (iii) assigns,  transfers, hypothecates,
mortgages, charges  and sets  over to  the Pledgee  all  of the  Pledgor's
right, title and interest in and to all of the Shares owned by the Pledgor
on the  date hereof (and  in and to  all certificates or  instruments evi-
dencing  such  Shares), to  be held  by the  Pledgee,  upon the  terms and
conditions set forth in this Agreement.

        3.2.  Subsequently Acquired Shares.  If the Pledgor shall  acquire
(by  purchase, stock dividend or  otherwise) any additional  Shares of the
Pledged  Company at any time  or from time to  time after the date hereof,
the Pledgor will forthwith pledge and deposit such Shares (or certificates<PAGE>


representing such Shares) as security with the Pledgee  and deliver to the
Pledgee certificates therefor,  accompanied by undated  stock powers  duly
executed in blank, or such other instruments of transfer as are acceptable
to  the Pledgee,  and will  promptly thereafter  deliver to the  Pledgee a
certificate executed by  any Authorized Officer of  the Pledgor describing
such Shares and certifying that  the same have been duly pledged  with the
Pledgee hereunder.

        3.3.  Uncertificated  Shares.  If any Pledged Shares  (whether now
owned or hereafter  acquired) are uncertificated  securities, the  Pledgor
shall promptly notify  the Pledgee  thereof, and shall  promptly take  all
actions required to  perfect the  security interest of  the Pledgee  under
applicable law (including, in any event, under Sections 8-313 and 8-321 of
the New York UCC, if applicable).  The Pledgor further agrees to take such
actions as the Pledgee  deems reasonably necessary or desirable  to effect
the foregoing and to permit the Pledgee to exercise any of its rights  and
remedies hereunder, and agrees to provide an opinion of counsel reasonably
satisfactory  to  the  Pledgee   with  respect  to  any  such   pledge  of
uncertificated Shares promptly upon request of the Pledgee.

        3.4.   Definition of Pledged Shares and Collateral.  All Shares at
any  time  pledged or  required to  be  pledged hereunder  are hereinafter
called the  "Pledged Shares,"  which together  with all  proceeds thereof,
including any securities and moneys  received and at the time held  by the
Pledgee hereunder and all  Dividends and Distributions on or  with respect
to any  Pledged Shares  is hereinafter called  the "Collateral".   As used
herein  the term (i) Dividends shall mean all stock dividends, liquidating
dividends, shares of stock resulting from stock splits, reclassifications,
warrants,  options, non-cash  dividends and  other distributions  (whether
similar or  dissimilar to the foregoing) on or with respect to any Pledged
Shares or other shares of capital stock constituting Collateral, but shall
not  mean  Distributions  and  (ii)  Distributions  shall  mean  all  cash
dividends and cash distributions with respect to any Pledged Shares.

        4.   APPOINTMENT  OF SUB-AGENTS;  ENDORSEMENTS, ETC.   The Pledgee
shall have the right to appoint one or more  sub-agents for the purpose of
retaining physical possession of the Pledged Shares, which may be held (in
the discretion  of the Pledgee)  in the name  of the Pledgor,  endorsed or
assigned in blank or in favor of the Pledgee or any nominee or nominees of
the  Pledgee or a sub-agent appointed by  the Pledgee.  The Pledgee agrees
to promptly notify  the Pledgor  after the appointment  of any  sub-agent;
PROVIDED, HOWEVER, that the failure  to give such notice shall  not affect
the validity of such appointment.

        5.  VOTING, ETC.,  WHILE NO NOTICED EVENT OF DEFAULT.   Unless and
until a Noticed  Event of Default  shall have occurred and  be continuing,
the Pledgor  shall be entitled  to exercise any  and all voting  and other
consensual  rights  pertaining  to the  Pledged  Shares  and  to give  all
consents,  waivers or ratifications in  respect thereof; PROVIDED, that no
vote shall  be cast or  any consent, waiver  or ratification given  or any
action taken  which would violate or be inconsistent with any of the terms
of this  Agreement or any other  Credit Document, or which  would have the
effect of impairing the rights,  priorities or remedies of the  Pledgee or
any other Creditor under this Agreement or any other Credit Document.  All
such  rights of  the Pledgor  to vote  and to  give consents,  waivers and
ratifications shall cease in case  a Noticed Event of Default shall  occur
and be  continuing, and Section 7 hereof shall become applicable.  As used<PAGE>


herein, a  "Noticed Event of Default"  shall mean (i) an  Event of Default
with respect to  any Borrower under  Section 9.05 of the  Credit Agreement
and (ii) any other  Event of Default in respect  of which the Pledgee  has
given the Pledgor notice that such Event of Default constitutes a "Noticed
Event of Default".

        6.  DIVIDENDS AND OTHER DISTRIBUTIONS.   Unless a Noticed Event of
Default  shall have occurred and be continuing, all cash dividends payable
in respect  of the  Pledged Shares  shall be  paid to  the  Pledgor.   The
Pledgee shall also be entitled to receive directly, and to  retain as part
of the Collateral:

         (i)   all  other  or  additional  stock  or  other securities  or
    property (other than  cash) paid or distributed by way  of dividend or
    otherwise in respect of the Pledged Shares; and

        (ii)   all  other  or  additional  stock  or  other securities  or
    property  (including  cash) paid  or  distributed  in  respect of  the
    Pledged  Shares  by  way  of  stock-split,  spin-off,  split-up,   re-
    classification, combination of shares or similar rearrangement.

        7.   REMEDIES  IN CASE  OF NOTICED  EVENT OF  DEFAULT.  In  case a
Noticed  Event of  Default  shall have  occurred  and be  continuing,  the
Pledgee  shall  be entitled  to  exercise all  of  the rights,  powers and
remedies (whether  vested in it by  this Agreement or by  any other Credit
Document or  by law) for the  protection and enforcement of  its rights in
respect  of the  Collateral, and  the Pledgee  shall be  entitled, without
limitation, to exercise  the following  rights, which  the Pledgor  hereby
agrees to be commercially reasonable:

          (i)  to   receive  all  amounts   payable  in   respect  of  the
    Collateral payable to the Pledgor under Section 6 hereof;

         (ii)  to  transfer all or any part of the Pledged Shares into the
    Pledgee's name or  the name of  its nominee  or nominees (the  Pledgee
    agrees to  promptly notify the Pledgor  after such transfer; PROVIDED,
    HOWEVER,  that the failure  to give such  notice shall not  affect the
    validity of such transfer);

        (iii)   to vote  all or any part of the Pledged Shares (whether or
    not transferred  into the name of the Pledgee)  and give all consents,
    waivers and ratifications in  respect of the Collateral  and otherwise
    act with respect  thereto as though it were the outright owner thereof
    (the  Pledgor  hereby  irrevocably  constituting  and  appointing  the
    Pledgee the proxy and attorney-in-fact of the Pledgor, with full power
    of substitution to do so); and

         (iv)  at any  time  or from  time to  time  to  sell, assign  and
    deliver,  or  grant  options to  purchase,  all  or  any  part of  the
    Collateral,  or any interest  therein, at any public  or private sale,
    without demand of performance, advertisement or notice of intention to
    sell or of  the time or  place of  sale or adjournment  thereof or  to
    redeem or otherwise (all  of which are hereby waived by  the Pledgor),
    for cash,  on credit or  for other property,  for immediate or  future
    delivery without any assumption of  credit risk, and for such price or
    prices and on such terms as the Pledgee in its absolute discretion may
    determine; PROVIDED, that  at least 10  days' notice  of the time  and<PAGE>


    place  of any such  sale shall be  given to the Pledgor.   The Pledgor
    hereby waives and releases to the fullest extent permitted  by law any
    right or equity of redemption with respect to the Collateral,  whether
    before or after sale hereunder, and all rights, if any, of marshalling
    the  Collateral and any  other security for the  Obligations or other-
    wise.  At  any such  sale, unless  prohibited by  applicable law,  the
    Pledgee on behalf of the Creditors may bid for and purchase all or any
    part  of the Collateral so sold free from  any such right or equity of
    redemption.   Neither the Pledgee nor any Creditor shall be liable for
    failure to collect or realize upon any or all of the Collateral or for
    any delay in so doing nor shall any of them be under any obligation to
    take any action whatsoever with regard thereto.

        8.   REMEDIES, ETC., CUMULATIVE.  Each right, power  and remedy of
the Pledgee provided for in this Agreement or any other Credit Document or
now  or hereafter  existing at  law or in  equity or  by statute  shall be
cumulative and concurrent  and shall be  in addition  to every other  such
right, power or remedy.  The exercise or beginning of  the exercise by the
Pledgee or any other Creditor of any one or  more of the rights, powers or
remedies provided  for in this Agreement  or any other  Credit Document or
now or  hereafter existing at law or in equity  or by statute or otherwise
shall not  preclude the simultaneous or  later exercise by the  Pledgee or
any other  Creditor of all such  other rights, powers or  remedies, and no
failure or  delay on  the part  of the Pledgee  or any  other Creditor  to
exercise any  such  right,  power or  remedy  shall operate  as  a  waiver
thereof.  The Creditors agree that  this Agreement may be enforced only by
the  action of the  Collateral Agent or  the Pledgee, in  each case acting
upon the instructions  of the Required  Banks and  that no other  Creditor
shall have  any right individually to  seek to enforce or  to enforce this
Agreement or to realize upon  the security to be granted hereby,  it being
understood and  agreed that such rights  and remedies may  be exercised by
the Collateral  Agent for the benefit  of the Creditors upon  the terms of
this Agreement.

        9.   APPLICATION  OF PROCEEDS.      All  moneys collected  by  the
Pledgee upon any sale  or other disposition of the  Collateral pursuant to
the terms of  this Agreement, together with  all other moneys  received by
the Pledgee  hereunder, shall  be applied  in the  manner provided  in the
Security Agreement.

        (b)   It  is understood and agreed  that the  Pledgor shall remain
liable to  the extent of any deficiency between the amount of the proceeds
of the Collateral hereunder and the aggregate amount of the Obligations of
the Pledgor.

        10.  PURCHASERS OF COLLATERAL.  Upon any sale of the Collateral by
the Pledgee  hereunder (whether  by virtue  of  the power  of sale  herein
granted,  pursuant to judicial process  or otherwise), the  receipt of the
Pledgee or the officer making the sale shall be a  sufficient discharge to
the purchaser or purchasers of the Collateral  so sold, and such purchaser
or purchasers shall not be obligated to see to the application of any part
of  the purchase  money paid over  to the  Pledgee or  such officer  or be
answerable in any way for the misapplication or nonapplication thereof.

        11.   INDEMNITY.   (a)  The  Pledgor  hereby  covenants  with  the
Pledgee for the benefit of the Collateral Agent and the Banks that it will
pay to  the Pledgee on demand  all moneys whatsoever which  the Pledgee or<PAGE>


the  Collateral Agent or the Banks shall  or may reasonably expend, be put
to  or  become liable  for,  in or  about  the protection,  maintenance or
enforcement of the security created  by this Agreement or in or  about the
exercise  by the Pledgee or  the Collateral Agent and  the Banks of any of
the powers vested  in it or them hereunder together  with interest thereon
at the  rate provided for in Section 1.08 of the Credit Agreement from the
date when such moneys were expended by  the Pledgee or such Bank until the
date of actual receipt, whether before or after any relevant judgment.

        (b)    Any  amounts  paid  by  any Indemnitee  as  to  which  such
Indemnitee  has the  right to  reimbursement shall  constitute Obligations
secured  by  the Collateral.   The  indemnity  obligations of  the Pledgor
contained in  this Section  11  shall continue  in full  force and  effect
notwithstanding  the full payment of all the Notes issued under the Credit
Agreement and the payment of all other Obligations and notwithstanding the
discharge thereof.

        12.   THE PLEDGEE AS  AGENT.  The Pledgee will  hold in accordance
with this Agreement all items of the Collateral at any time received under
this   Agreement.    It  is  expressly  understood  and  agreed  that  the
obligations  of  the Pledgee  as holder  of  the Collateral  and interests
therein and with respect  to the disposition thereof, and  otherwise under
this Agreement, are only those expressly set forth in this Agreement.  The
Pledgee shall  act hereunder on the terms  and conditions set forth herein
and in Section 11 of the Credit Agreement.

        13.    REPRESENTATIONS,   WARRANTIES  AND  COVENANTS  OF  PLEDGOR.
(a)  The Pledgor represents, warrants and covenants that  it is the legal,
record and beneficial owner of, and  has good and marketable title to, all
Shares pledged by it hereunder;  no consent of any other party (including,
without limitation, any stockholder or  creditor of the Pledgor or  any of
its Subsidiaries (including the Pledged Company)) and no consent, license,
permit, approval or authorization  of, exemption by, notice or  report to,
or registration, filing or declaration with, any governmental authority is
required to  be obtained by the Pledgor  in connection with the execution,
delivery  or  performance of  this Agreement,  or  in connection  with the
exercise of its  rights and  remedies pursuant to  this Agreement,  except
those which  have been  obtained or  made or  as may  be required  by laws
affecting  the offer and sale  of securities generally  in connection with
the exercise by  the Pledgee of certain of its remedies hereunder and  all
Shares  have  been duly  and  validly  issued,  are fully  paid  and  non-
assessable.   The Pledgor  covenants and  agrees that it  will defend  the
Pledgee's right, title and security interest in and to the  Shares and the
proceeds thereof against the claims and demands of all persons whomsoever;
and the Pledgor covenants and  agrees that it will have like title  to and
right to  pledge any other property  at any time hereafter  pledged to the
Pledgee as Collateral hereunder and will likewise defend the right thereto
and security interest therein of the Pledgee and the other Creditors.

        (b)  As of the Restatement Effective Date this Agreement creates a
valid and  enforceable perfected security  interest in and Lien  on all of
the Pledged Collateral in favor of the Collateral Agent for the benefit of
the  Banks, and  no filings  or recordings  are  required to  perfect such
security interest except for filings  or recordings required in connection
with this Agreement which  shall have been made upon  or prior to (or  are
the subject of arrangements, satisfactory to the Administrative Agent, for<PAGE>


filing on or  promptly after the  date of) the  execution and delivery  of
this Agreement.

        14.    TERMINATION,  RELEASE. (a)  After the Termination  Date (as
defined  below),  this  Agreement  shall  terminate  (provided  that   all
indemnities set forth herein including, without limitation,  in Section 11
hereof shall survive any such termination) and the Pledgee, at the request
and  expense of  the Pledgor,  will  promptly execute  and deliver  to the
Pledgor a proper instrument or instruments acknowledging the  satisfaction
and  termination of  this Agreement,  and will  duly assign,  transfer and
deliver to the Pledgor (without recourse and without any representation or
warranty)  such  of the  Collateral as  may be  in  the possession  of the
Pledgee and has not theretofore been sold or otherwise applied or released
pursuant to this Agreement.  As used in this Agreement, "Termination Date"
shall mean the date upon which  the Total Commitment has been  terminated,
no Note or Letter of Credit is outstanding and all  other Obligations then
due and payable have been paid in full.

        (b)    At any  time that  the Pledgor  desires that  Collateral be
released as provided in the  foregoing Section 14(a), it shall  deliver to
the  Pledgee a certificate signed by an  Authorized Officer of the Pledgor
stating  that the  release  of the  Collateral  is permitted  pursuant  to
Section 14(a).

        15.  NOTICES, ETC.  All notices and other communications hereunder
shall be in writing and shall be delivered or mailed by  first class mail,
postage prepaid, addressed:

        (a)    if to  the Pledgor, at its  address set  forth opposite its
    signature below;

        (b)    if to the Pledgee, at:

               Christiania Bank og Kreditkasse, New York Branch
               11 West 42nd St., 7th Floor
               New York, New York  10036
               Attention:  Martin Lunder
               Telephone No.:  (212) 827-4800
               Telecopier No.:  (212) 827-4888

        (c)    if to  any Bank (other than  the Pledgee),  at such address
    as such Bank shall have specified in the Credit Agreement;

or  at such other address as  shall have been furnished  in writing by any
Person described above to the party required to give notice hereunder.

        16.  WAIVER; AMENDMENT.   None of the terms and conditions of this
Agreement  may  be  changed, waived,  modified  or  varied  in any  manner
whatsoever unless  in writing duly signed  by the Pledgor and  the Pledgee
(with  the written  consent of  the Required  Banks (or  all the  Banks if
required by Section 12.12 of the Credit Agreement)).

        17.   MISCELLANEOUS.   This  Agreement shall  be binding  upon the
successors and  assigns of the Pledgor  and shall inure to  the benefit of
and be  enforceable by the Pledgee  and its successors and  assigns.  THIS
AGREEMENT  SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH AND GOVERNED
BY THE LAW OF THE STATE OF NEW  YORK.  The headings in this Agreement  are<PAGE>


for  purposes of reference only and shall  not limit or define the meaning
hereof.  This  Agreement may be  executed in any  number of  counterparts,
each of which shall be an original, but all of which shall constitute  one
instrument.<PAGE>
 



        IN WITNESS WHEREOF,  the Pledgor and the Pledgee have  caused this
Agreement to be executed by their duly elected officers duly authorized as
of the date first above written.



Address:                              ENSCO DELAWARE, INC.
1445 Ross Avenue, Suite 2700
Dallas, Texas  75202-2792
Telephone No.:  (214) 922-1500
Telecopier No.:  (214) 855-0080
Attention:  Treasurer                 By________________________________  
                                        Title:         






                                      CHRISTIANIA BANK OG 
                                      KREDITKASSE, NEW YORK BRANCH,
                                        as Pledgee



                                      By________________________________
                                        Title:     <PAGE>



                                                            ANNEX A
                                                               to      
                                                       PLEDGE AGREEMENT
                                                       ------------------

                               LIST OF STOCK
                               -------------<PAGE>


                                                                 EXHIBIT K
                                                                 ---------


                        FORM OF SUBSIDIARY GUARANTY
                        ---------------------------


        SUBSIDIARY GUARANTY,  dated as  of February __, 1997  made by  the
undersigned (the "Guarantor").  Except as  otherwise defined herein, terms
used herein and defined  in the Credit Agreement (as  hereinafter defined)
shall be used herein as therein defined.


                           W I T N E S S E T H :


        WHEREAS, ENSCO International Incorporated,  ENSCO Delaware,  Inc.,
ENSCO Offshore Company, ENSCO Offshore U.K.  Limited, Dual Holding Company
("Borrower C"), the lending  institutions from time to time  party thereto
(the  "Banks"), Christiania Bank og  Kreditkasse, New York  Branch and Den
norske Bank  ASA, New York  Branch, as  co-agents and Christiania  Bank og
Kreditkasse, New York Branch, as administrative agent and security trustee
(the "Administrative Agent") have entered  into a Credit Agreement,  dated
as of February __, 1997 (as amended, modified or supplemented from time to
time, the "Credit Agreement"), providing for the making of Tranche C Loans
and the  issuance of, and participation in, Tranche C Letters of Credit as
contemplated therein (the Banks, the Co-Agents, the Administrative  Agent,
the  Letter  of  Credit  Issuer,  and  the  Collateral  Agent  are  herein
collectively called the "Creditors");

        WHEREAS,  Borrower C  owns, directly  or  indirectly, 100%  of the
capital stock of the Guarantor;

        WHEREAS, it  is a condition to  the making of  Tranche C Loans and
the issuance of, and  participation in, Tranche C Letters  of Credit under
the  Credit Agreement that the Guarantor shall have executed and delivered
this Guaranty; and

        WHEREAS, the Guarantor will obtain benefits from the incurrence of
Tranche C Loans  by Borrower C  and the issuance of  Tranche C Letters  of
Credit  under the Credit  Agreement and,  accordingly, desires  to execute
this  Guaranty in  order  to  satisfy  the  conditions  described  in  the
preceding paragraph  and to induce  the Banks to  make Tranche C  Loans to
Borrower C and the Letter  of Credit Issuer to issue Tranche C  Letters of
Credit;


        NOW, THEREFORE,  in consideration of the foregoing and other bene-
fits accruing to the  Guarantor, the receipt and sufficiency of  which are
hereby acknowledged, the Guarantor hereby makes the following  representa-
tions and warranties to the Creditors and hereby covenants and agrees with
each Creditor as follows:

        1.   The Guarantor irrevocably and  unconditionally guarantees, as
primary obligor  and not merely as  surety, to the Creditors  the full and
prompt payment when due  (whether at the stated maturity,  by acceleration<PAGE>


or otherwise) of  (x) the principal of and interest on the Tranche C Notes
issued by, and the  Tranche C Loans made  to, Borrower C under  the Credit
Agreement, and  all reimbursement  obligations  and Unpaid  Drawings  with
respect  to  the Tranche  C  Letters  of Credit  issued  under the  Credit
Agreement and (y) all other  obligations (including obligations which, but
for the automatic stay under Section 362(a)  of the Bankruptcy Code, would
become due) and liabilities owing by Borrower C to the Creditors under the
Credit  Agreement (including,  without limitation,  indemnities, Fees  and
interest thereon) now existing or hereafter incurred under, arising out of
or in connection with  the Credit Agreement or  any other Credit  Document
and  the due  performance  and compliance  with the  terms  of the  Credit
Documents by  Borrower C  (all such principal,  interest, liabilities  and
obligations   being   herein    collectively   called   the    "Guaranteed
Obligations").   The Guarantor understands,  agrees and confirms  that the
Creditors  may  enforce this  Guaranty  up  to  the  full  amount  of  the
Guaranteed  Obligations against  the Guarantor without  proceeding against
Borrower  C, against any security for the Guaranteed Obligations, or under
any other  guaranty covering all  or a portion  of the  Guaranteed Obliga-
tions.  All payments by the Guarantor under this Guaranty shall be made on
the same basis as  payments by Borrower C under Sections  4.03 and 4.04 of
the Credit Agreement.

        2.   Additionally, the Guarantor unconditionally  and irrevocably,
guarantees the payment of any and all Guaranteed Obligations of Borrower C
to the  Creditors whether  or not due  or payable by  Borrower C  upon the
occurrence in  respect of  Borrower C  of any of  the events  specified in
Section 9.05 of the Credit  Agreement, and unconditionally and irrevocably
promises to pay such Guaranteed Obligations to the Creditors, or order, on
demand,  in lawful  money  of the  United  States.   This  Guaranty  shall
constitute a guaranty of payment, and not of collection.

        3.   The  liability of  the Guarantor  hereunder is  exclusive and
independent of any  security for or other guaranty of  the indebtedness of
Borrower  C whether executed  by the Guarantor, any  other guarantor or by
any other party, and the liability of the Guarantor hereunder shall not be
affected or  impaired by (a) any direction as to application of payment by
Borrower C  or by  any  other party,  (b) any  other  continuing or  other
guaranty, undertaking or maximum liability of  a guarantor or of any other
party  as to  the indebtedness of  Borrower C,  (c) any  payment on  or in
reduction  of any such other guaranty or undertaking, (d) any dissolution,
termination  or increase, decrease or  change in personnel  by Borrower C,
(e)  any payment  made  to  any Creditor  on  the indebtedness  which  any
Creditor  repays Borrower  C pursuant  to court  order in  any bankruptcy,
reorganization, arrangement, moratorium or other debtor relief proceeding,
and the  Guarantor waives any right to the deferral or modification of its
obligations hereunder by reason of any such proceeding, (f) any  action or
inaction by the Creditors as contemplated  in Section 6 hereof, or (g) any
invalidity, irregularity  or  unenforceability  of  all  or  part  of  the
Guaranteed Obligations or of any security therefor.

        4.  The obligations of the Guarantor hereunder are independent  of
the  obligations of  any other  guarantor  or Borrower  C, and  a separate
action  or actions  may be  brought and  prosecuted against  the Guarantor
whether or not action is brought against any other guarantor or Borrower C
and whether or not any other guarantor or Borrower C be joined in any such
action or actions.  Any payment  by Borrower C or other circumstance which<PAGE>


operates to toll any statute of limitations as to Borrower C shall operate
to toll the statute of limitations as to the Guarantor.

        5.   The Guarantor  hereby  waives notice  of acceptance  of  this
Guaranty and  notice of any  liability to which  it may apply,  and waives
promptness, diligence, presentment, demand of payment, protest, notice  of
dishonor or  nonpayment of any  such liabilities, suit or  taking of other
action by the Administrative Agent or any other Creditor against, and  any
other  notice to, any party  liable thereon (including  the Guarantor, any
other guarantor or Borrower C).

        6.  Any Creditor may at any time and from time to time without the
consent of, or  notice to, the Guarantor, without incurring responsibility
to  the Guarantor, without impairing  or releasing the  obligations of the
Guarantor hereunder, upon  or without any terms or conditions and in whole
or in part:

        (a)   change the  manner, place  or terms  of payment  of,  and/or
    change  or extend the time  of payment of, renew or  alter, any of the
    Guaranteed  Obligations,  any  security  therefor,  or  any  liability
    incurred directly  or indirectly in respect thereof,  and the guaranty
    herein made shall  apply to the Guaranteed Obligations as  so changed,
    extended, renewed or altered;

        (b)   take  and hold  security for the  payment of  the Guaranteed
    Obligations and sell,  exchange, release, surrender,  realize upon  or
    otherwise  deal with in  any manner  and in any order  any property by
    whomsoever  at any time  pledged or mortgaged to  secure, or howsoever
    securing, the Guaranteed Obligations or any liabilities (including any
    of those hereunder) incurred directly or indirectly in respect thereof
    or hereof, and/or any offset thereagainst;

        (c)   exercise  or  refrain from  exercising  any  rights  against
    Borrower C or others or otherwise act or refrain from acting;

        (d)  settle  or compromise any of the Guaranteed  Obligations, any
    security therefor or any liability  (including any of those hereunder)
    incurred directly or indirectly in respect thereof or hereof, and  may
    subordinate the payment of  all or any part thereof to the  payment of
    any liability  (whether due  or not)  of Borrower  C to  creditors  of
    Borrower C;

        (e)  apply  any sums by whomsoever  paid or howsoever realized  to
    any liability or liabilities of Borrower C to the Creditors regardless
    of what liabilities of Borrower C remain unpaid;

        (f)  release or substitute any one or more endorsers,  guarantors,
    any Credit Party or other obligors;

        (g)  consent to  or waive any breach of,  or any act, omission  or
    default under, any of the Credit  Documents or any of the  instruments
    or  agreements  referred  to therein,  or otherwise  amend,  modify or
    supplement  any  of  the  Credit  Documents  or  any  of  such   other
    instruments or agreements; and/or

        (h)  act or fail to act in any manner referred to in this Guaranty
    which  may deprive the  Guarantor of its right  to subrogation against<PAGE>


    Borrower C to recover full indemnity for any payments made pursuant to
    this Guaranty.

        7.   The  Guarantor  will not  exercise  any rights  which it  may
acquire by  way of subrogation  under this Guaranty  (whether contractual,
under Section 509  of the Bankruptcy  Code or  otherwise), by any  payment
made hereunder or  otherwise, until all  the Guaranteed Obligations  shall
have been irrevocably  paid in full.   If any amount shall be  paid to the
Guarantor on account of such  subrogation rights at any time when  all the
Guaranteed Obligations shall not have been paid in full, such amount shall
be forthwith  paid to the  Administrative Agent  on behalf of  the Secured
Creditors to be  credited and applied against the  Guaranteed Obligations.
If the Guarantor shall make payment to the Administrative Agent  of all or
any  part of the Guaranteed Obligations and all the Guaranteed Obligations
shall have  been paid  in full, the  Administrative Agent and  the Secured
Creditors will execute and deliver to the Guarantor appropriate documents,
without recourse and  without representation or  warranty, releasing  this
Guaranty  and transferring  to  the  Guarantor  any  and  all  rights  the
Administrative Agent and the Secured Creditors may have against Borrower C
or necessary to evidence the  transfer by subrogation to the  Guarantor of
any  interest in the Guaranteed Obligations resulting from such payment by
the Guarantor.

        8.  No invalidity, irregularity or unenforceability of all or  any
part  of  the Guaranteed  Obligations or  of  any security  therefor shall
affect, impair or  be a defense to this Guaranty,  and this Guaranty shall
be primary,  absolute and unconditional notwithstanding  the occurrence of
any  event or  the  existence  of  any  other  circumstances  which  might
constitute a legal or equitable discharge of a surety  or guarantor except
payment in full of the Guaranteed Obligations.

        9.  This Guaranty is a continuing one and all liabilities to which
it  applies or  may apply  under the  terms hereof  shall be  conclusively
presumed to have been created in reliance hereon.  No failure or  delay on
the part of any Creditor in exercising any right, power or privilege here-
under shall operate as a  waiver thereof; nor shall any single  or partial
exercise of any  right, power or privilege hereunder preclude any other or
further exercise  thereof or  the exercise  of any  other right,  power or
privilege.  The rights and remedies herein expressly specified are cumula-
tive and not exclusive of any rights or remedies which  any Creditor would
otherwise have.  No notice to or demand on the Guarantor in any case shall
entitle the  Guarantor to any other further notice or demand in similar or
other  circumstances or constitute a waiver of  the rights of any Creditor
to any  other or  further action  in any  circumstances without  notice or
demand.  It is not necessary for any Creditor to inquire into the capacity
or powers  of Borrower  C  or any  of its  Subsidiaries  or the  officers,
directors, partners or agents  acting or purporting to act  on its behalf,
and  any indebtedness  made  or created  in  reliance upon  the  professed
exercise of such powers shall be guaranteed hereunder.

        10.  Any indebtedness  of Borrower C now or hereafter held  by the
Guarantor is hereby subordinated to the indebtedness of Borrower C to  the
Creditors; and  such indebtedness of Borrower  C to the  Guarantor, if the
Administrative Agent, after an Event of Default has occurred, so requests,
shall be collected, enforced and received  by the Guarantor as trustee for
the  Creditors  and be  paid  over  to the  Creditors  on  account of  the
indebtedness  of Borrower  C to  the Creditors,  but without  affecting or<PAGE>


impairing  in any manner  the liability of  the Guarantor  under the other
provisions of  this Guaranty.  Prior  to the transfer by  the Guarantor of
any  note or negotiable instrument evidencing any indebtedness of Borrower
C to  the Guarantor,  the Guarantor  shall mark  such  note or  negotiable
instrument with a legend that the same is subject to this subordination.  

        11.  (a)   The  Guarantor waives  any  right (except  as  shall be
required by applicable law and cannot be waived) to require the  Creditors
to (A) proceed against Borrower C, any other guarantor or any other party,
(B) proceed  against or  exhaust any  security held  from Borrower C,  any
other guarantor or any  other party or (C) pursue any other  remedy in the
Creditors' power whatsoever.  The Guarantor waives any defense based on or
arising out of any defense of Borrower C, any other guarantor or any other
party  other than payment in full of the Guaranteed Obligations, including
without limitation any defense based on  or arising out of the  disability
of  Borrower C, any other guarantor or  any other party, or the unenforce-
ability of the Guaranteed Obligations or any  part thereof from any cause,
or the cessation from any cause of the liability of  Borrower C other than
payment in  full of  the Guaranteed Obligations.   The  Creditors may,  at
their election, foreclose on any security held by the Administrative Agent
or  the other  Creditors by  one or  more judicial  or  nonjudicial sales,
whether or  not every aspect of  any such sale is  commercially reasonable
(to the extent such sale is  permitted by applicable law), or exercise any
other  right or remedy  the Creditors may  have against Borrower  C or any
other  party, or any security,  without affecting or  impairing in any way
the  liability of  the  Guarantor  hereunder  except  to  the  extent  the
Guaranteed Obligations have  been paid in full.  The  Guarantor waives any
defense arising out  of any such  election by  the Creditors, even  though
such  election operates to impair or extinguish any right of reimbursement
or subrogation or other right or remedy of the Guarantor against  Borrower
C or any other party or any security.

          (b)  The Guarantor waives all  presentments, demands for perfor-
mance,  protests  and notices,  including  without  limitation notices  of
nonperformance, notices  of  protest,  notices  of  dishonor,  notices  of
acceptance of this  Guaranty, and  notices of the  existence, creation  or
incurring  of new or additional  indebtedness.  The  Guarantor assumes all
responsibility  for being  and  keeping itself  informed  of Borrower  C's
financial condition  and assets,  and of all  other circumstances  bearing
upon the risk of nonpayment of the Guaranteed Obligations  and the nature,
scope  and extent  of the  risks  which the  Guarantor assumes  and incurs
hereunder, and  agrees that the Creditors shall have no duty to advise the
Guarantor  of information  known to them  regarding such  circumstances or
risks.

        12.  The Creditors agree that this  Guaranty may be enforced  only
by the action of the Administrative Agent or the Collateral Agent, in each
case  acting upon  the instructions  of  the Required  Banks  and that  no
Creditor  shall have  any  right individually  to seek  to  enforce or  to
enforce this Guaranty, it being understood and agreed that such rights and
remedies  may be exercised by  the Administrative Agent  or the Collateral
Agent for  the benefit of the  Creditors upon the terms  of this Guaranty.
The Creditors further agree that this Guaranty may not be enforced against
any director, officer, employee or stockholder of the Guarantor (except to
the extent such stockholder is also a Guarantor hereunder).<PAGE>


        13.  The Guarantor covenants and agrees that on and after the date
hereof and until  the termination of  the Total Tranche  C Commitment  and
when no Tranche C Letter  of Credit or Tranche C Note  remains outstanding
and all Guaranteed Obligations have been paid in full, the Guarantor shall
take,  or will refrain from taking,  as the case may  be, all actions that
are  necessary to  be  taken or  not taken  so  that no  violation of  any
provision, covenant or agreement contained in Section 7 or 8 of the Credit
Agreement (to the extent the Guarantor is referenced therein), and so that
no  Event of Default, is caused by the  actions of the Guarantor or any of
its Subsidiaries.

        14. (a)  Subject to Section  14(b), the Guarantor hereby agrees to
pay all reasonable out-of-pocket costs and expenses (x), after an Event of
Default  shall  have  occurred and  be  continuing,  of  each Creditor  in
connection with the  enforcement of  this Guaranty and  the protection  of
such Creditor's  rights  hereunder  (including,  without  limitation,  the
reasonable  fees and  disbursements  of counsel  employed  by any  of  the
Creditors)  and (y)  of the  Administrative Agent  in connection  with any
amendment, waiver  or consent relating hereto  (including, without limita-
tion,  the reasonable fees and  disbursements of counsel)  employed by the
Administrative Agent.

        (b)   A  certificate as  to any  out-of-pocket costs  and expenses
payable to the  Administrative Agent or  the Banks under  this Section  14
shall  be submitted to the Guarantor by the Banks, which certificate shall
show in reasonable  detail the amount payable and the calculations used to
determine  in  good  faith such  amount  and  shall  be conclusive  absent
manifest error.

        15.   This  Guaranty shall be binding  upon the  Guarantor and its
successors and assigns and shall inure to the benefit of the Creditors and
their successors and assigns.

        16.    Neither  this  Guaranty  nor any  provision  hereof  may be
changed, waived,  discharged or terminated except with the written consent
of the Required Banks (or to  the extent required by Section 12.12  of the
Credit Agreement, with  the written consent of  each Bank) and  the Guara-
ntor.

        17.   The Guarantor acknowledges  that an executed (or  conformed)
copy  of each  of the  Credit  Documents has  been made  available to  its
principal executive  officers  and such  officers  are familiar  with  the
contents thereof.

        18.  Each Creditor shall  be entitled to all  rights granted under
applicable law (including, without limitation, Section 151 of the New York
Debtor and  Creditor Law) to set off and to  appropriate and apply any and
all deposits (general or special) and  any other indebtedness at any  time
held or owing by such Creditor to or for  the credit or the account of the
Guarantor,  against and on account  of the obligations  and liabilities of
the  Guarantor  to  such  Creditor under  this  Guaranty,  irrespective of
whether or not such Creditor shall have made any demand hereunder.

        19.    All notices,  requests,  demands  or  other  communications
pursuant  hereto shall  be deemed  to have  been duly  given or  made when
delivered  to the Person  to which such  notice, request,  demand or other
communication  is required  or permitted to  be given  or made  under this<PAGE>


Guaranty, addressed to such party at  (i) in the case of any Creditor,  as
provided in the Credit Agreement and (ii) in the case of the Guarantor, at
its address set forth opposite its signature below; or in any case at such
other address as any of the Persons listed above may  hereafter notify the
others in writing.

        20.  If  claim is ever  made upon  any Creditor  for repayment  or
recovery of any amount or amounts received in payment or on account of any
of the Guaranteed Obligations and  any of the aforesaid payees  repays all
or part of said amount  by reason of (a) any judgment, decree  or order of
any  court or administrative body  having jurisdiction over  such payee or
any of its property or (b) any  settlement or compromise of any such claim
effected by such payee with any such claimant (including Borrower C), then
and in  such event the  Guarantor agrees that  any such judgment,  decree,
order, settlement  or  compromise shall  be  binding upon  the  Guarantor,
notwithstanding any revocation hereof or of any other instrument  evidenc-
ing any  liability of Borrower  C, and the  Guarantor shall be  and remain
liable  to the  aforesaid  payees hereunder  for the  amount so  repaid or
recovered  to the same extent as if  such amount had never originally been
received by any such payee.

        21.  (a)   THIS GUARANTY  AND THE  RIGHTS  AND OBLIGATIONS  OF THE
CREDITORS  AND OF  THE  UNDERSIGNED HEREUNDER  SHALL  BE GOVERNED  BY  AND
CONSTRUED  IN ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK.  Any legal
action or  proceeding with respect  to this Guaranty  or any other  Credit
Document may be  brought in the courts of the State  of New York or of the
United States  of America for the  Southern District of New  York, and, by
execution  and delivery of this Guaranty, the Guarantor hereby accepts for
itself  and in respect of its property, generally and unconditionally, the
jurisdiction of  the aforesaid  courts and hereby  irrevocably waives  any
right it may have to  object to the laying of venue of any  such action or
proceeding in the  aforesaid courts and hereby  further irrevocably waives
and agrees not  to plead or claim  that any such action  or proceeding has
been brought in an  inconvenient forum.  The Guarantor  hereby irrevocably
designates, appoints and  empowers Borrower  C, with offices  on the  date
hereof at  1445 Ross Avenue,  Suite 2700, Dallas,  Texas 7502-2792 as  its
designee, appointee and agent  to receive, accept and acknowledge  for any
on its  behalf, and  in respect of  its property, service  or any  and all
legal process, summons, notices  and documents which may be served  in any
such action or proceeding.  If for any reason such designee, appointee and
agent shall cease to be available to act  as such, the Guarantor agrees to
designate a  new designee, appointee  and agent  in New York  City on  the
terms  and  for  the  purposes  of  this  provision  satisfactory  to  the
Administrative Agent for  the Banks  under this Guaranty.   The  Guarantor
further irrevocably consents to the  service of process out of any  of the
aforementioned courts  in any such action or  proceeding by the mailing of
copies  thereof by registered or  certified mail, postage  prepaid, to the
Guarantor at its  address set forth opposite its signature below.  Nothing
herein shall affect the right of any of the  Creditors to serve process in
any other manner  permitted by  law or  to commence  legal proceedings  or
otherwise proceed against the Guarantor in any other jurisdiction.

        (b)  The  Guarantor hereby irrevocably waives any  objection which
it may  now  or hereafter  have  to the  laying  of venue  of any  of  the
aforesaid actions or proceedings arising out of or in connection with this
Guaranty or any other credit document brought in the courts referred to in
clause (a)  above and hereby further irrevocably  waives and agrees not to<PAGE>


plead or claim in any such court that such action or proceeding brought in
any such court has been brought in an inconvenient forum.

        22.   In the event that all  of the capital stock of the Guarantor
is sold  or otherwise  disposed of  or liquidated  in compliance  with the
requirements of Section  8.02 of  the Credit  Agreement (or  such sale  or
other  disposition is permitted by the proviso contained in the definition
of "Collateral Disposition" in  the Credit Agreement or has  been approved
in writing  by the Required  Banks (or  all Banks if  required by  Section
12.12 of the Credit Agreement)) and the proceeds of such sale, disposition
or liquidation are applied in accordance with the provisions of the Credit
Agreement,  to the extent applicable, the Guarantor shall be released from
this Guaranty and this Guaranty shall terminate, and have no further force
or effect (it being understood and agreed that the sale of any Person that
owns, directly or  indirectly, the capital stock of the Guarantor shall be
deemed to be a sale of the Guarantor for the purposes of this Section 22).

        23.  This Guaranty may be  executed in any number  of counterparts
and by the parties hereto on separate counterparts, each of  which when so
executed and  delivered shall  be  an original,  but  all of  which  shall
together constitute one and  the same instrument.   A set of  counterparts
executed by all the parties hereto shall be lodged with  the Guarantor and
the Administrative Agent.

        24.  THE GUARANTOR HEREBY IRREVOCABLY WAIVES ALL RIGHTS TO A TRIAL
BY  JURY IN  ANY ACTION,  PROCEEDING  OR COUNTERCLAIM  ARISING  OUT OF  OR
RELATING  TO THIS GUARANTY, THE OTHER CREDIT DOCUMENTS OR THE TRANSACTIONS
CONTEMPLATED HEREBY OR THEREBY.

        25.  It is understood and agreed that any Subsidiary of Borrower C
that is required to execute a counterpart of this Guaranty pursuant to the
Credit  Agreement  shall automatically  become  a  Guarantor hereunder  by
executing   a  counterpart  hereof   and  delivering   the  same   to  the
Administrative Agent.

        26.   All payments  made by the Guarantor  hereunder will  be made
without setoff, counterclaim or other defense.

        27.   After the date upon which the Total Commitment has been ter-
minated, no  Note  or  Letter  of Credit  is  outstanding  and  all  other
Obligations  then due and  payable have been  paid in full,  this Guaranty
shall  terminate and the  Administrative Agent  will promptly  execute and
deliver to the Guarantor a proper instrument or instruments  acknowledging
the termination of this Guaranty.


                             *     *     *     *<PAGE>


        IN WITNESS WHEREOF,  the Guarantor has caused this Guaranty  to be
executed and delivered as of the date first above written.


Address for the Guarantor
- -------------------------

                                          ENSCO OFFSHORE COMPANY II
1445 Ross Avenue
Suite 2700
Dallas, Texas  75202-2792                 By________________________
Attention:  Chief Financial Officer         Title:
Tel: (214) 922-1500
Fax: (214) 855-0080


        

Accepted and Agreed to:

CHRISTIANIA BANK OG KREDITKASSE,
  NEW YORK BRANCH, 
  as Administrative Agent


By____________________________
  Title:


By____________________________
  Title:<PAGE>



                                                                EXHIBIT L
                                                                ---------





                       FORM OF COMPLIANCE CERTIFICATE
                       -----------------------------

        This Compliance  Certificate (the  "Certificate") is  delivered to
you pursuant  to Section  7.01(e) of  the  Credit Agreement,  dated as  of
February __, 1997 (as amended, supplemented or modified from time to time,
the   "Credit  Agreement"),   among   ENSCO   International   Incorporated
("Holdings"), ENSCO Delaware, Inc., ENSCO Offshore Company, ENSCO Offshore
U.K.  Limited, Dual Holding Company, the lending institutions from time to
time party thereto, Christiania  Bank og Kreditkasse, New York  Branch and
Den norske Bank ASA, New York Branch, as co-agents and Christiania Bank og
Kreditkasse,  New  York  Branch,  as  administrative  agent  and  security
trustee.  Terms defined in the  Credit Agreement and not otherwise defined
herein are used herein as therein defined.

        1.   I am the duly elected, qualified and  acting [Chief Financial
Officer/Controller/Authorized Officer] of Holdings.

        2.  I  have reviewed and  am familiar  with the  contents of  this
Certificate.  I am providing this  Certificate solely in my capacity as an
officer of Holdings.  The matters set forth herein are true to the best of
my knowledge  after diligent inquiry, but I express no personal opinion as
to any conclusions of law or other legal matters.

        3.  I  have reviewed the  terms of  the Credit  Agreement and  the
other  Credit Documents  and  have made  or  caused to  be  made under  my
supervision,  a  review  in  reasonable detail  of  the  transactions  and
condition  of  Holdings  during  the  accounting  period  covered  by  the
financial  statements  attached  hereto  as  Annex  I.     Such  financial
statements have been prepared  in accordance with the requirements  of the
Credit Agreement.

        4.   Attached hereto  as  Annex II  are the  computations  showing
compliance with the  covenants specified therein.   All such  computations
are true and correct.

        5.    On  the  date  hereof,  the  representations  and warranties
contained  in the Credit Agreement  and in the  other Credit Documents are
true and correct in all  material respects with the same effect  as though
such  representations and  warranties had  been made  on the  date hereof,
unless stated  to relate to  a specific earlier  date, in which  case such
representations and  warranties  were true  and  correct in  all  material
respects as of such earlier date.

        6.   On  the  date hereof,  no  Default or  Event of  Default  has
occurred and is continuing.<PAGE>



        IN WITNESS  WHEREOF, I  execute this Certificate this  ___ day  of
________, ____.


                              ENSCO INTERNATIONAL INCORPORATED
               



                              By______________________________
                                Title:<PAGE>



                                                               ANNEX I to
                                                   COMPLIANCE CERTIFICATE
                                                   ----------------------



                     CONSOLIDATED FINANCIAL STATEMENTS
                     ---------------------------------<PAGE>



                                                             ANNEX II to
                                                  COMPLIANCE CERTIFICATE
                                                  ----------------------

                           COMPLIANCE WORKSHEET
                           --------------------



                             Part I.

                         Coverage Ratio
                         --------------

 1.   Consolidated Net Income for the
      preceding 12 month period ended on
      the last day of the fiscal quarter
      last ended                                 $__________

 2.   Provisions for taxes based on income
      for the preceding 12 month period
      ended on the last day of the fiscal
      quarter last ended                         $__________

 3.   Consolidated Interest Expense for
      the preceding 12 month period ended
      on the last day of the fiscal
      quarter last ended                         $__________

 4.   Amortization or write-off of
      deferred financing costs or any
      other non-cash charges to the extent
      deducted in determining Consolidated
      Net Income for the preceding 12
      month period ended on the last day
      of the fiscal quarter last ended           $__________

 5.   Losses on sales of assets (excluding
      sales in the ordinary course of
      business, which in any event will
      not include sales of drilling rigs)
      and other extraordinary losses for
      the preceding 12 month period ended
      on the last day of the fiscal
      quarter last ended                         $__________

 6.   Gains on sales of assets (excluding
      sales in the ordinary course of
      business not involving drilling
      rigs) and other extraordinary gains
      for the preceding 12 month period
      ended on the last day of the fiscal
      quarter last ended                         $__________

 7.   Consolidated EBIT (sum of Items 1
      through 5 minus Item 6)                    $__________<PAGE>


 8.   Depreciation expense for the
      preceding 12 month period ended on
      the last day of the fiscal quarter
      last ended                                 $__________

 9.   Amortization expense for the
      preceding 12 month period ended on
      the last day of the fiscal quarter
      last ended                                 $__________

 10.  Consolidated EBITDA (sum of Items 7
      through 9)                                 $__________

 11.  Consolidated Interest Expense for
      the preceding 12 month period ended
      on the last day of the fiscal
      quarter last ended                         $__________

 12.  Coverage Ratio (Item 10:Item 11)            _____:1.00

 13.  Minimum Coverage Ratio pursuant to
      Section 8.07                                 4.00:1.00<PAGE>


                           Part II.

                       Working Capital
                       ---------------

 1.   Current assets (including cash and
      Cash Equivalents) of Holdings and
      its Subsidiaries on a consolidated
      basis in accordance with GAAP
      calculated for the last day of the
      fiscal quarter last ended                  $__________

 2.   Current liabilities of Holdings and
      its Subsidiaries (but excluding the
      current liability associated with up
      to $88,000,000 of the required
      repayment of Loans in connection
      with the Scheduled Commitment
      Reduction occurring on the Maturity
      Date)  determined on a consolidated
      basis in accordance with GAAP
      calculated for the last day of the
      fiscal quarter last ended                  $__________

 3.   Working Capital Ratio (Item 1:
      Item 2)                                     ____:1.00 

 4.   Minimum permitted Working Capital
      Ratio pursuant to Section 8.08              1:50:1.00<PAGE>




                           Part III.

                         Leverage Ratio
                         --------------

 A.   Leverage Ratio for Purposes of Section 8.09

 1.   Consolidated Funded Indebtedness
      determined in accordance with GAAP
      calculated for the last day of the
      fiscal quarter last ended                  $__________

 2.   Consolidated Net Worth calculated
      for the last day of the fiscal
      quarter last ended                         $__________

 3.   Total Capitalization (Item 1 plus
      Item 2)                                    $__________

 4.   Leverage Ratio for purposes of
      calculations made pursuant to
      Section 8.09 (Item A1:Item A3)              ____:1.00

 5.   Maximum permitted Leverage Ratio            
      pursuant to Section 8.09:                   0.35:1.00
                                             

 B.   Pricing Ratio

 1.   Consolidated Funded Indebtedness       
      determined in accordance with GAAP
      for the last day of the fiscal
      quarter last ended

 2.   Consolidated EBITDA for the 12 month   
      period ended on the last day of the
      fiscal quarter last ended (see Item
      10 of part I of this Annex)

 3.   Pricing Ratio (Item B1 above:Item B2   
      above)                                      ____:1.00<PAGE>



                            Part IV.

                    Collateral Maintenance
                    ----------------------

 1.   Total Commitment                           $__________

 2.   Market Value of the Mortgaged Rigs
      as of the date of the most recent
      valuation                                  $__________

 3.   Minimum permitted Market Value of
      the Mortgaged Rigs pursuant to
      Section 8.10: 
 
            (i) If calculated prior to
           October 18, 1999, Item 1
           multiplied by 2.0
                                                 $__________
           (ii) If calculated after
           October 18, 1999, Item 1
           multiplied by 2.5
                                                 $__________ 
                                                        <PAGE>


                                                              EXHIBIT M
                                                              ---------



               FORM OF ASSIGNMENT AND ASSUMPTION AGREEMENT
               -------------------------------------------


                                                      DATE:______________


          Reference is made to the Credit Agreement described in Item 2 of
Annex I annexed hereto (as such Credit Agreement may hereafter be amended,
modified or  supplemented  from time  to  time, the  "Credit  Agreement").
Unless defined  in Annex I  attached hereto,  terms defined in  the Credit
Agreement  are  used  herein   as  therein  defined.    ___________   (the
"Assignor") and ___________  (the "Assignee") hereby agree as follows:

          1.   The  Assignor  hereby  sells and  assigns to  the  Assignee
without recourse  and without  representation or warranty  (other than  as
expressly provided herein),  and the Assignee hereby purchases and assumes
from the  Assignor, that interest in  and to all of  the Assignor's rights
and obligations under  the Credit Agreement  as of the  date hereof  which
represents the  percentage interest specified  in Item 4  of Annex I  (the
"Assigned Share")  of all of Assignor's outstanding rights and obligations
under the  Credit Agreement  indicated in  Item 4  of Annex  I, including,
without  limitation,  all  rights  and  obligations with  respect  to  the
Assigned  Share of the Total Commitment  and of the outstanding Tranche A,
Tranche B  and Tranche  C Loans  and Tranche  A and  Tranche C Letters  of
Credit.  After giving effect  to such sale and assignment,  the Assignee's
Commitment will be as set forth in Item 4 of Annex I.

          2.   The Assignor  (i) represents  and warrants  that it  is the
legal and beneficial owner of the interest being assigned by  it hereunder
and  that  such interest  is  free  and clear  of  any  liens or  security
interests;  (ii)  makes  no  representation  or warranty  and  assumes  no
responsibility   with   respect   to   any   statements,   warranties   or
representations made in or in connection with  the Credit Agreement or the
other   Credit   Documents   or   the   execution,   legality,   validity,
enforceability, genuineness, sufficiency or value of the Credit  Agreement
or  the other  Credit  Documents  or  any  other  instrument  or  document
furnished pursuant thereto; and (iii) makes no representation or  warranty
and assumes no responsibility  with respect to the financial  condition of
any Credit Party or the  performance or observance by any Credit  Party of
any  of its  obligations under the  Credit Agreement  or the  other Credit
Documents or any other instrument or document furnished pursuant thereto.

          3.   The Assignee  (i) represents and  warrants that  it is duly
authorized  to enter  into  and  perform  the  terms  of  this  Assignment
Agreement;  (ii) confirms  that  it has  received  a  copy of  the  Credit
Agreement  and the  other Credit  Documents, together  with copies  of the
financial statements  referred to  therein and  such  other documents  and
information  as it has deemed appropriate to  make its own credit analysis
and decision to enter into this Assignment Agreement; (iii) agrees that it
will, independently and  without reliance upon  the Administrative  Agent,
the Assignor or any other Bank and based on such documents and information<PAGE>


as it shall  deem appropriate at the time, continue to make its own credit
decisions in taking or not taking action under the Credit  Agreement; (iv)
appoints and authorizes the Administrative Agent, the Collateral Agent and
the Security Trustee  to take such action  as agent on  its behalf and  to
exercise  such  powers under  the Credit  Agreement  and the  other Credit
Documents  as are delegated  to the  Administrative Agent,  the Collateral
Agent and  the Security Trustee  by the terms thereof,  together with such
powers  as  are reasonably  incidental thereto;  (v)  agrees that  it will
perform in accordance with their terms all of the obligations which by the
terms of the Credit Agreement are required to be performed by it as a Bank
[; and (vi) attaches the forms  prescribed by the Internal Revenue Service
of the United States certifying  as to the Assignee's status for  purposes
of determining exemption from United States withholding taxes with respect
to all payments to be made  to the Assignee under the Credit Agreement  or
such other documents as are necessary  to indicate that all such  payments
are  subject to  such  rates  at  a  rate reduced  by  an  applicable  tax
treaty]<F1>.

          4.  Following  the execution of  this Assignment  and Assumption
Agreement  by the Assignor and  the Assignee, an  executed original hereof
(together  with all attachments)  will be delivered  to the Administrative
Agent.  The  effective date  of this Assignment  and Assumption  Agreement
shall be  the date of  execution hereof by  the Assignor and  the Assignee
(and  if required by the terms of the Credit Agreement, the consent of the
Administrative  Agent, each  Letter  of  Credit  Issuer and  [Borrower  A]
[Borrower  B]  [Borrower  C],  which  consent  will  not  be  unreasonably
withheld)   and  the   receipt  by   the  Administrative   Agent  of   the
administrative  fee  referred  to  in  Section   12.04(b)  of  the  Credit
Agreement, unless  otherwise specified in  Item 5 of  Annex I  hereto (the
"Settlement Date").

          5.  Upon the delivery of a fully executed original hereof to the
Administrative Agent, as of the Settlement Date, (i) the Assignee shall be
a party  to the  Credit  Agreement and,  to the  extent  provided in  this
Assignment  and Assumption Agreement, have the rights and obligations of a
Bank thereunder and under the other Credit Documents and (ii) the Assignor
shall, to the extent provided in this Assignment and Assumption Agreement,
relinquish  its  rights and  be released  from  its obligations  under the
Credit Agreement and the other Credit Documents.

          6.    It  is  agreed  that upon  the  effectiveness  hereof, the
Assignee shall  be entitled to (x)  all interest on the  Assigned Share of
the Tranche A,  Tranche B and Tranche  C Loans at  the rates specified  in
Item 6  of Annex I, (y)  all Commitment Commission (if  applicable) on the
Assigned Share  of the Total Commitment at the rate specified in Item 7 of
Annex  I,  and (z)  all  Letter  of Credit  Fees  (if  applicable) on  the
Assignee's  participation in all Tranche A and Tranche C Letters of Credit
at the rate specified  in Item 8 of Annex  I hereto, which, in  each case,
accrue on and after the Settlement Date, such interest and, if applicable,
Commitment  Commission  and Letter  of  Credit  Fees, to  be  paid  by the
Administrative Agent, upon receipt thereof from Borrower A and Borrower C,
directly  to the  Assignee.   It is  further agreed  that all  payments of
principal made by Borrower A, Borrower  B and Borrower C on the respective
Assigned Share of the Tranche A, Tranche B and Tranche C Loans which occur
on  and  after   the  Settlement  Date  will  be  paid   directly  by  the
Administrative  Agent  to the  Assignee.   Upon  the Settlement  Date, the
Assignee shall  pay to the Assignor an amount specified by the Assignor in<PAGE>


writing which represents the Assigned Share of the principal amount of the
respective Tranche A,  Tranche B and Tranche C Loans  made by the Assignor
pursuant to the Credit  Agreement which are outstanding on  the Settlement
Date, net of  any closing costs, and  which are being  assigned hereunder.
The  Assignor and the Assignee  shall make all  appropriate adjustments in
payments  under the Credit Agreement  for periods prior  to the Settlement
Date directly between themselves.

          7. THIS  ASSIGNMENT AND ASSUMPTION AGREEMENT  SHALL BE  GOVERNED
BY, AND CONSTRUED IN ACCORDANCE WITH,  THE LAWS OF THE STATE OF  NEW YORK.
EACH PARTY HERETO HEREBY IRREVOCABLY WAIVES  ALL RIGHTS TO A TRIAL BY JURY
IN  ANY ACTION, PROCEEDING  OR COUNTERCLAIM ARISING OUT  OF OR RELATING TO
THIS  ASSIGNMENT,  THE   OTHER  CREDIT  DOCUMENTS   OR  THE   TRANSACTIONS
CONTEMPLATED HEREBY OR THEREBY.


                   *           *           *           *


          IN  WITNESS  WHEREOF,  the  parties  hereto  have   caused  this
Assignment and Assumption Agreement  to be executed by their  duly elected
officers duly authorized, as of the date first above written.


                                      [NAME OF ASSIGNOR],
                                        as Assignor

                                      By___________________________
                                        Title:




                                      [NAME OF ASSIGNEE], 
                                        as Assignee

                                      By___________________________
                                        Title:




Acknowledged and Agreed:


CHRISTIANIA BANK OG KREDITKASSE, 
  as Administrative Agent and 
  Letter of Credit Issuer


By_____________________________
  Title:


By_____________________________
  Title:<PAGE>







[[ENSCO OFFSHORE COMPANY]<F2> [ENSCO OFFSHORE U.K. LIMITED]<F3> [DUAL
HOLDING COMPANY]<F4>


By_____________________________
  Title:]<F5>












_________________


<F1>      Include  if the Assignee is organized under the laws of
          a jurisdiction outside the United States.

<F2>      Include bracketed language if  assigning an interest in
          the Tranche A Facility.

<F3>      Include bracketed  language if assigning an interest in
          the Tranche B Facility.

<F4>      Include bracketed language if assigning an interest  in
          the Tranche C Facility.

<F5>      Include bracketed language  if assignment is not  being
          made to the Assignor's Affiliate or to another Bank.
<PAGE>



                                                                ANNEX 1
                                                                -------


               ANNEX FOR ASSIGNMENT AND ASSUMPTION AGREEMENT

                                   ANNEX I





1.   The Borrower:       [ENSCO OFFSHORE COMPANY]<F1> [ENSCO OFFSHORE U.K.
                         LIMITED]<F2> [DUAL HOLDING COMPANY]<F3>

2.   Name and Date of Credit Agreement:

                         Credit Agreement, dated as of February ___, 1997,
                         among  ENSCO  International  Incorporated,  ENSCO
                         Delaware,  Inc.,  ENSCO  Offshore Company,  ENSCO
                         Offshore  U.K. Limited, Dual Holding Company, the
                         lending  institutions  from  time to  time  party
                         thereto,  Christiania  Bank  og Kreditkasse,  New
                         York  Branch and  Den norske  Bank ASA,  New York
                         Branch,  as  co-agents  and Christiania  Bank  og
                         Kreditkasse, New York  Branch, as  administrative
                         agent and security trustee.

3.   Date of Assignment Agreement:

                         _______________ ___, _______

4.   Amounts (as of date of item #3 above):

                          Total Tranche  Total Tranche  Total Tranche
                           A Commitment   B Commitment   C Commitment
                          -------------  -------------  -------------

     a.  Aggregate Amount
         for all Banks      $_________     $_________     $_________

     b.  Assigned Share        ____%          ____%          ____%

     c.  Amount of
         Assigned Share     $_________     $_________     $_________

5.   Settlement Date:
                         _______________ ___, _______


6.   Rate of Interest    As  set  forth in  Section  1.08  of  the  Credit
                         Agreement
     to the Assignee:    (unless otherwise agreed to  by the Assignor  and
                         the Assignee).F4
<PAGE>


7.   Commitment          As set forth in Section 3.01(a) of the Credit
     Commission:         Agreement (unless otherwise agreed to by the
                         Assignor and the Assignee).<F5>

[8.  Letter of           As set forth in Section 3.01(b) of the Credit
     Credit Fees:        Agreement (unless otherwise agreed to by the
                         Assignor and the Assignee).<F6>]<F7>

[8.][9.]    Notices:

            ASSIGNOR:

                ________________
                ________________
                ________________
                ________________
                Attention:
                Telephone No.:
                Facsimile No.:


            ASSIGNEE:

                ________________
                ________________
                ________________
                ________________
                Attention:
                Telephone No.:
                Facsimile No.:


[9.][10.]   Payment Instructions:

            ASSIGNOR:

                ________________
                ________________
                ________________
                ________________
                ABA No.:
                Account No.:
                Reference:
                Attention:

            ASSIGNEE:

                ________________
                ________________
                ________________
                ________________
                Attention:
                Telephone No.:
                Facsimile No.:
                Attention:<PAGE>


____________________

<F1>   Insert bracketed language if assigning an interest in the Tranche A
       Facility.

<F2>   Insert bracketed language if assigning an interest in the Tranche B
       Facility.

<F3>   Insert bracketed language if assigning an interest in the Tranche C
       Facility.

<F4>   The Borrower and the  Administrative Agent shall direct the  entire
       amount of  the interest to  the Assignee  at the rate  set forth in
       Section  1.08  of  the  Credit  Agreement,  with  the  Assignor and
       Assignee effecting  any  agreed upon  sharing of  interest  through
       payments by the Assignee to the Assignor.

<F5>   The Borrower and  the Administrative Agent shall  direct the entire
       amount of the Commitment Commission to the Assignee at the rate set
       forth in Section 3.01(a) of the Credit Agreement, with the Assignor
       and the Assignee  effecting any  agreed upon sharing of  Commitment
       Commission through payment by the Assignee to the Assignor.

<F6>   The  Borrower and the Administrative Agent  shall direct the entire
       amount of the Letter of Credit Fees to the Assignee at the rate set
       forth in Section 3.01(b) of the Credit Agreement, with the Assignor
       and the Assignee effecting any agreed upon sharing of the Letter of
       Credit Fees through payment by the Assignee to the Assignor.

<F7>   Applicable only  to  assignments  of  interests  in the  Tranche  A
       Facility or The Tranche C Facility.
<PAGE>

<PAGE>





                                                  EXHIBIT NO. 15.1











April 28, 1997



Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C.  20549

Dear Ladies and Gentlemen:

We  are aware that  ENSCO International Incorporated  has included our
report  dated April  28, 1997  (issued pursuant  to the  provisions of
Statement of Auditing Standards No.  71) in the Company's Registration
Statements on  Form S-3 (Nos. 33-42965,  33-46500, 33-49590, 33-43756,
33-64642 and 333-3575), and any existing amendments thereto, and  Form
S-8 (Nos.  33-14714, 33-32447, 33-35862,  33-40282 and 33-41294).   We
are also aware  of our  responsibilities under the  Securities Act  of
1933.

Yours very truly,


/s/ PRICE WATERHOUSE LLP
- ------------------------
Price Waterhouse LLP
Dallas, Texas<PAGE>


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