ENSCO INTERNATIONAL INC
10-Q, 1996-08-02
DRILLING OIL & GAS WELLS
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                     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 June 30, 1996

                                     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 70,774,762  shares  of Common  Stock,  $.10 par  value, of  the
registrant outstanding as of July 29, 1996.<PAGE>



                      ENSCO INTERNATIONAL INCORPORATED

                             INDEX TO FORM 10-Q

                    FOR THE QUARTER ENDED JUNE 30, 1996



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

     ITEM 1.  FINANCIAL STATEMENTS

          Consolidated Balance Sheet
              June 30, 1996 and December 31, 1995                  3

          Consolidated Statement of Income
              Three Months Ended June 30, 1996 and 1995            4
     
          Consolidated Statement of Income
              Six Months Ended June 30, 1996 and 1995              5

          Consolidated Statement of Cash Flows
              Six Months Ended June 30, 1996 and 1995              6

          Notes to Consolidated Financial Statements             7 - 9
               
     ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF
              FINANCIAL CONDITION AND RESULTS OF OPERATIONS     10 - 18


PART II - OTHER INFORMATION

     ITEM 1.   LEGAL PROCEEDINGS                                   19

     ITEM 4.   SUBMISSION OF MATTERS TO A VOTE OF
                    SECURITY HOLDERS                               19

     ITEM 6.   EXHIBITS AND REPORTS ON FORM 8-K                    20


SIGNATURES                                                         21<PAGE>


                       PART I - FINANCIAL INFORMATION

ITEM 1.     FINANCIAL STATEMENTS

             ENSCO INTERNATIONAL INCORPORATED AND SUBSIDIARIES
                         CONSOLIDATED BALANCE SHEET


                                                  JUNE 30,     DECEMBER 31,
                                                     1996         1995    
                                                 -----------   -----------
                                                 (UNAUDITED)   
                                                      (IN THOUSANDS)
ASSETS
CURRENT ASSETS
  Cash and cash equivalents..................... $   76,743      $ 77,064
  Short-term investments........................          -         5,000
  Accounts and notes receivable, net............     97,033        60,796
  Prepaid expenses and other....................     27,137        22,893
        Total current assets....................    200,913       165,753

PROPERTY AND EQUIPMENT, AT COST.................  1,153,187       818,266
  Less accumulated depreciation.................    218,982       185,334 
        Property and equipment, net.............    934,205       632,932

OTHER ASSETS
  Goodwill......................................     96,906         7,252
  Other.........................................      9,838        15,514
     Total other assets                             106,744        22,766
                                                 $1,241,862      $821,451

LIABILITIES AND STOCKHOLDERS' EQUITY                                       
CURRENT LIABILITIES                                 
  Accounts payable.............................. $   12,811      $  8,936
  Accrued liabilities...........................     56,496        45,820
  Current maturities of long-term debt..........     33,857        32,052
        Total current liabilities...............    103,164        86,808

LONG-TERM DEBT..................................    272,988       159,201

DEFERRED INCOME TAXES...........................     47,348        26,800

OTHER LIABILITIES...............................     31,250        17,393

STOCKHOLDERS' EQUITY
  Common stock, $.10 par value, 125.0 million 
    shares authorized, 77.1 million and 66.9 
    million shares issued.......................      7,706         6,689
  Additional paid-in capital....................    834,575       615,644
  Retained earnings (deficit)...................     12,673       (23,598)
  Restricted stock (unearned compensation)......     (5,509)       (5,263)
  Cumulative translation adjustment.............     (1,086)       (1,086)
  Treasury stock at cost, 6.3 million shares....    (61,247)      (61,137)
        Total stockholders' equity .............    787,112       531,249
                                                 $1,241,862      $821,451

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


             ENSCO INTERNATIONAL INCORPORATED AND SUBSIDIARIES
                      CONSOLIDATED STATEMENT OF INCOME
                                (Unaudited)


                                                 THREE MONTHS ENDED
                                                       JUNE 30,      
                                               ----------------------
                                                 1996          1995  
                                               --------      --------
                                                            (RESTATED)
                                               (IN THOUSANDS, EXCEPT
                                                   PER SHARE DATA)

OPERATING REVENUES...........................  $ 97,249      $ 62,425 

OPERATING EXPENSES
  Operating costs............................    49,227        36,164
  Depreciation and amortization..............    17,880        14,307
  General and administrative.................     2,950         2,478
                                                 70,057        52,949

OPERATING INCOME.............................    27,192         9,476 

OTHER INCOME (EXPENSE)
  Interest income............................     1,098         1,652
  Interest expense...........................    (4,387)       (4,104)
  Other, net.................................     7,458           400 
                                                  4,169        (2,052)

INCOME FROM CONTINUING OPERATIONS BEFORE
  INCOME TAXES AND MINORITY INTEREST.........    31,361         7,424 

  Provision for (benefit from) income taxes
    Current income taxes.....................       594          (855)
    Deferred income taxes....................     8,255         1,000 
                                                  8,849           145 

  Minority interest..........................       931           596

INCOME FROM CONTINUING OPERATIONS............    21,581         6,683

  Income from discontinued operation.........         -           401 

NET INCOME ..................................  $ 21,581      $  7,084 


EARNINGS PER SHARE
  Continuing operations......................  $    .34      $    .11
  Discontinued operation.....................         -           .01
                                               $    .34      $    .12

WEIGHTED AVERAGE SHARES OUTSTANDING..........    62,788        60,389 


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


             ENSCO INTERNATIONAL INCORPORATED AND SUBSIDIARIES
                      CONSOLIDATED STATEMENT OF INCOME
                                (Unaudited)


                                                  SIX MONTHS ENDED
                                                       JUNE 30,      
                                               ----------------------
                                                 1996          1995  
                                               --------      --------
                                                            (RESTATED)
                                               (IN THOUSANDS, EXCEPT
                                                   PER SHARE DATA)

OPERATING REVENUES...........................  $181,795      $123,555 

OPERATING EXPENSES
  Operating costs............................    92,751        72,259
  Depreciation and amortization..............    34,254        27,853
  General and administrative.................     5,165         4,621
                                                132,170       104,733

OPERATING INCOME.............................    49,625        18,822 

OTHER INCOME (EXPENSE)
  Interest income............................     2,334         3,801
  Interest expense...........................    (8,436)       (8,495)
  Other, net.................................     7,722         1,343 
                                                  1,620        (3,351)

INCOME FROM CONTINUING OPERATIONS BEFORE
  INCOME TAXES AND MINORITY INTEREST.........    51,245        15,471 

  Provision for (benefit from) income taxes
    Current income taxes.....................       961          (357)
    Deferred income taxes....................    12,655           541 
                                                 13,616           184 

  Minority interest..........................     1,358         1,198

INCOME FROM CONTINUING OPERATIONS............    36,271        14,089

  Income from discontinued operation.........         -           617 

NET INCOME ..................................  $ 36,271      $ 14,706 


EARNINGS PER SHARE
  Continuing operations......................  $    .59      $    .23
  Discontinued operation.....................         -           .01
                                               $    .59      $    .24

WEIGHTED AVERAGE SHARES OUTSTANDING..........    61,719        60,518 


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


             ENSCO INTERNATIONAL INCORPORATED AND SUBSIDIARIES
                    CONSOLIDATED STATEMENT OF CASH FLOWS
                                (Unaudited)


                                                        SIX MONTHS ENDED
                                                            JUNE 30,       
                                                      -------------------
                                                        1996       1995  
                                                      --------   --------
                                                                (RESTATED)
                                                         (IN THOUSANDS)

OPERATING ACTIVITIES
  Net income........................................  $ 36,271   $ 14,706 
  Adjustments to reconcile net income to net cash
    provided by operating activities:
       Net cash provided by discontinued operation..         -        657
       Depreciation and amortization................    34,254     27,853 
       Deferred income tax provision................    12,655        541  
       Amortization of other assets.................     1,646      1,787 
       Other........................................    (2,104)    (1,024) 
       Changes in operating assets and liabilities:
         Increase in accounts receivable............    (8,881)   (12,539)
         Decrease in prepaid expenses and other.....     2,566      8,914
         Increase in accounts payable...............     2,228      5,375
         Increase (decrease) in accrued liabilities.     5,312     (2,557) 
             Net cash provided by operating                   
               activities...........................    83,947     43,713

INVESTING ACTIVITIES
  Additions to property and equipment...............   (69,289)   (67,075)
  Purchase of long-term investments.................   (18,112)         -
  Sale of short-term investments....................     5,000      2,879
  Net cash acquired in Dual acquisition.............     8,529          -  
  Other.............................................     1,495     (3,212)
      Net cash used by investing activities.........   (72,377)   (67,408) 

FINANCING ACTIVITIES
  Proceeds from long-term borrowings................    45,000          -
  Reduction of long-term borrowings.................   (57,590)   (19,851)
  Repurchase of common stock........................         -     (7,210)
  Other.............................................       699        157  
    Net cash used by financing activities...........   (11,891)   (26,904) 

DECREASE IN CASH AND CASH EQUIVALENTS...............      (321)   (50,599) 

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD......    77,064    147,851 
       
CASH AND CASH EQUIVALENTS, END OF PERIOD............  $ 76,743   $ 97,252


 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 statement  of the
results of operations for the interim periods presented.

On June 12, 1996, the Company acquired DUAL DRILLING COMPANY ("Dual").  See
"Note  2  -  Acquisition"  below.   The  Company's  consolidated  financial
statements include the results of  Dual from the June 12,  1996 acquisition
date.

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,  1995 included  in the Company's  Annual Report  to the
Securities  and Exchange Commission on Form 10-K.   As a result of the sale
of the Company's technical services  business effective September 30, 1995,
the  Company's 1995  Consolidated Statements  of Income  and of  Cash Flows
presented herein have been reclassified to present the  Company's technical
services operations as a discontinued operation.

Note 2 - Acquisition
- --------------------

On June  12, 1996, the Company  acquired Dual pursuant to  an Agreement and
Plan of  Merger among the  Company, DDC Acquisition  Company and Dual  (the
"Merger Agreement") approved  by Dual stockholders on that date.  Under the
terms  of  the Merger  Agreement,  each  share  of  Dual common  stock  was
immediately  converted  into  the right  to  receive  0.625  shares of  the
Company's  common stock.   The  Company issued  approximately  10.1 million
shares of its common stock to the previous Dual stockholders in  connection
with the acquisition of Dual.  

The  Company  accounted  for   the  acquisition  of  Dual  as   a  purchase
acquisition.  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 acquired  Dual operations consist  of a fleet  of 20  offshore drilling
rigs, including 10 jackup rigs and 10 platform rigs.  Five of Dual's jackup
rigs are located in the Gulf  of Mexico and the remaining five jackup  rigs
are located offshore Indonesia, India  and Qatar.  Of the 10  platform rigs
operated by  Dual, seven are currently  located in the Gulf  of Mexico, two
are located off the coast of California and one is located off the coast of
China. <PAGE>


The following  unaudited  pro  forma  information  shows  the  consolidated
results of operations for the six months ended June 30, 1996 and 1995 based
upon adjustments  to the  restated 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, 1995 (in thousands, except per share data):

                                           1996          1995    
                                         --------      --------

     Operating revenues                  $235,337      $169,653
     Operating income                    $ 52,700      $ 17,406
     Income from continuing operations   $ 34,773      $  7,232
     Net income                          $ 34,773      $  7,849

     Earnings per share                  $   0.48      $   0.11

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, 1995,  or of results that  may occur in
the future.

Note 3 - Gain on Settlement
- ---------------------------

In February  1991, a  subsidiary of  the Company  filed  an action  against
TransAmerican  Natural   Gas  Corporation  and  related   subsidiaries  and
affiliates ("TransAmerican") seeking  damages for breach  of contract.   On
April 5, 1996, the U.S. District  court for the Southern District of Texas,
Houston Division, entered a judgment against TransAmerican.  As a result of
the judgment, on April 18, 1996, the subsidiary of the Company entered into
a  settlement agreement  with  TransAmerican.    Under  the  terms  of  the
settlement agreement, the subsidiary of the Company received  approximately
$7.3 million.   In the second quarter of 1996,  the Company recorded a gain
of  $6.4  million  under the  caption  "Other,  net"  with a  corresponding
increase in  deferred income tax expense  of $2.2 million for  an after tax
gain of $4.2 million.  

Note 4 - Long-Term Debt
- -----------------------

On June 13, 1996, the  Company amended its $130.0 million  revolving credit
facility with a group of international banks, increasing availability under
the revolving credit facility to $150.0  million ("facility").  On the same
date,  the Company borrowed an additional $45.0 million under the facility,
increasing  outstanding borrowings  under the  facility to  $111.0 million.
Proceeds from the additional $45.0 million of borrowings under the facility
were  used to  refinance approximately  $41.8  million of  Dual's long-term
debt.   Availability  under the facility  is reduced  by $7.0  million on a
semi-annual  basis  commencing   in  October  1996,   with  the   remaining
outstanding balance  due in October  2001.   The facility  continues to  be
collateralized by  the majority  of  the Company's  jackup rigs,  including
certain  of the  jackup rigs  acquired  in the  acquisition of  Dual.   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 June  30,
1996, the interest rate on the facility was 7.1%. <PAGE>


At June  30, 1996, Dual had  outstanding $100.0 million (face  amount) of 9
7/8% Senior Subordinated Notes due  2004 ("9 7/8% Notes").  As  of June 30,
1996, the Company had purchased $17.3 million (face amount) of the 9 7/8  %
Notes on the  open market.  The  Company's balance sheet  at June 30,  1996
reflects long-term  debt net of the  $17.3 million (face amount)  of 9 7/8%
Notes purchased by the Company.  In mid-July 1996, the Company purchased an
additional  $3.8 million  (face amount)  of the  9 7/8%  Notes on  the open
market.  Additionally, in mid-July 1996 $5.0 million (face amount) of the 9
7/8% Notes  were redeemed pursuant to  an offer by  Dual to purchase  the 9
7/8% Notes following a change in control.    

Note 5 - Provision for Income Taxes
- -----------------------------------

The current income tax provisions  for the three and six months  ended June
30, 1996 are primarily for United  States alternative minimum taxes and the
Company's operations in Venezuela and the Netherlands.  The deferred income
tax provisions for the three and six  months ended June 30, 1996 relate  to
the Company's operations in the U.S., the United Kingdom and Venezuela.  No
provision for regular U.S. federal  income taxes has been recorded  for the
three and  six months  ended June 30,  1996 due  to the utilization  of net
operating loss carryforwards to offset taxes currently payable.  

At June 30, 1996, the  Company had regular and alternative minimum  tax net
operating  loss carryforwards  of approximately  $264.7 million  and $140.8
million, respectively, and  investment tax credit  and alternative  minimum
tax credit  carryforwards  of  approximately  $360,000  and  $1.5  million,
respectively.  

Note 6 - Commitments and Contingencies
- --------------------------------------
      
In mid-January 1996, one of  the Company's jackup rigs located in  the Gulf
of  Mexico experienced  damage as  it  was preparing  to jack  up on  a new
location.  The jackup rig was mobilized to a shipyard where it is currently
undergoing repairs and is expected  to be available for work in  late 1996.
The Company is fully insured for  damage to and salvage operations  related
to the jackup rig and the Company expects that all such costs incurred will
be  recoverable from  its insurance  coverage.   As of  June 30,  1996, the
Company  had  a   receivable  recorded  from   its  insurance  carrier   of
approximately  $2.6 million  related to  damage to  and salvage  operations
related to the rig. 

Note 7 - Subsequent Events
- --------------------------

The  Company sold substantially all of the assets of its technical services
business in  1995.  The consideration  received by the Company  in the sale
consisted  of $11.8  million  in  cash and  two  notes  from the  purchaser
("Purchaser")  totalling $6.1  million.   The  notes  consisted of  a  $3.6
million promissory note and a $2.5 million convertible promissory note.  In
early July 1996, the Purchaser completed an initial public offering of  its
common  stock ("Purchaser's IPO").  In connection with the Purchaser's IPO,
the $ 3.6  million promissory note  was paid in full  and the $2.5  million
convertible  promissory  note  was  converted  into  common  stock  of  the
Purchaser.    The  Purchaser's common  stock  received  by  the Company  in
connection with the  conversion of the $2.5 million  convertible promissory<PAGE>


note was sold  for $5.4 million in  the Purchaser's IPO.  The  Company will
record a gain  of approximately $2.9  million, exclusive of  taxes, in  the
third  quarter of 1996 associated  with the sale  of the Purchaser's common
stock  received  by  the  Company  from  conversion  of  the  $2.5  million
convertible promissory note.  

In  mid-July 1996,  the  Company sold  its  remaining land  rig, which  was
located in the  Middle East, for $2.5 million.   The Company will  record a
gain of approximately  $750,000, exclusive  of income taxes,  in the  third
quarter of 1996 associated with the sale of the rig. <PAGE>



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

BUSINESS ENVIRONMENT

ENSCO International Incorporated (the "Company") provides offshore contract
drilling  and marine transportation services  to the oil  and gas industry.
The Company's contract drilling  operations are primarily conducted in  the
Gulf  of  Mexico,  the  North   Sea,  Venezuela  and  Asia.     The  marine
transportation  services provided  by the  Company are  currently conducted
solely in the Gulf of Mexico.  

Industry  activity levels  for offshore  drilling rigs  and Gulf  of Mexico
marine vessels  have increased in the  first half of 1996  over the already
improved  levels prevalent  in the  second  half of  1995.   The  increased
activity levels in 1996 have resulted in demand sufficient to absorb almost
all of the  rigs that are in working condition  and being actively marketed
in the major offshore oil and gas markets throughout the world and for Gulf
of Mexico marine  vessels that are in working  condition and being actively
marketed.   

Industry activity levels for Gulf of Mexico drilling rigs have consistently
increased  since mid-1995.    Management believes  current  Gulf of  Mexico
industry activity levels are  sustainable for the remainder of  1996 unless
there  is a significant and unexpected deterioration in natural gas prices.
In  particular, demand for cantilever  jackup rigs, which  is the Company's
main focus,  is expected to  remain strong  due to the  increased level  of
development  activity which  requires  cantilevered drilling  over existing
production   platforms.     Activity  levels   for  the   Company's  marine
transportation   vessels   generally   correspond   with   activity  levels
experienced for the Company's Gulf of Mexico rigs.    

In the North Sea, industry  activity levels increased in the first  half of
1996 with full utilization of all actively marketed jackup rigs as compared
to near full utilization  in the second half of 1995.  During 1996, reduced
industry  activity levels in  the British sector  of the North  Sea (due to
lower natural gas prices in the United Kingdom) have been  offset by higher
activity  levels in other sectors  of the North  Sea, particularly Holland.
Further decreases in United Kingdom natural gas prices and related activity
levels  in the  British  sector of  the  North  Sea without  an  offsetting
increase  in  activity  levels in  other  sectors of  the  North  Sea could
adversely impact the overall North Sea market.  

In Asia, during  the first half of 1996, demand  for offshore drilling rigs
has  increased while the supply of actively marketed offshore drilling rigs
has continued to  fall.   Management anticipates that  activity levels  for
offshore  drilling rigs  in  Asia  should  remain  fairly  stable  for  the
remainder  of 1996  unless  there is  a  significant deterioration  in  oil
prices.   

The Company's  barge  drilling rigs  in Venezuela  generally operate  under
long-term  contracts  for  a national  oil  company.   As  a  result, their
activity levels are not as dependent on oil prices.<PAGE>


Offshore rig and marine vessel  industry utilization for the three and  six
months ended June 30, 1996 and 1995 are summarized below:

                                   THREE MONTHS ENDED    SIX MONTHS ENDED
                                        JUNE 30,             JUNE 30,    
                                   ------------------    ----------------
                                     1996     1995         1996     1995 
                                    ------   ------       ------   ------
INDUSTRY WIDE AVERAGES *
Offshore Rigs
   U.S. Gulf of Mexico:
       Jackup Rigs:
          Rigs Under Contract         121      104          118      100
          Total Rigs Available        137      142          137      141
          % Utilization               88%      73%          86%      71%

       Platform Rigs:
          Rigs Under Contract          18        9           16       10
          Total Rigs Available         26       26           25       26
          % Utilization               69%      35%          63%      37%

   Worldwide:
       Jackup Rigs:
          Rigs Under Contract         346      319          340      315
          Total Rigs Available        384      389          384      390
          % Utilization               90%      82%          89%      81%

       Platform Rigs:
          Rigs Under Contract          90       86           86       88
          Total Rigs Available        122      137          118      133
          % Utilization               74%      63%          73%      66%

Marine Vessels  
   U.S. Gulf of Mexico:
       Vessels Under Contract         258      246          263      240
       Total Vessels Available        278      277          280      277
       % Utilization                  93%      89%          94%      87%

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


RESULTS OF OPERATIONS

On June  12, 1996, the Company acquired DUAL DRILLING COMPANY ("Dual") in a
purchase  acquisition.    The Company's  consolidated  financial statements
include the  results of Dual from the June 12,  1996 acquisition date.  The
acquired Dual operations consist of a  fleet of 20 offshore drilling  rigs,
including 10 jackup rigs and 10 platform rigs.   Five of Dual's jackup rigs
are  located in the Gulf  of Mexico and the remaining  five jackup rigs are
located  offshore Indonesia,  India  and Qatar.   Of  the 10  platform rigs
operated by  Dual, seven are currently  located in the Gulf  of Mexico, two
are  located off the coast  of California and  one, which is  not owned but
managed by Dual, is located off the coast of China.  

The  following analysis highlights the Company's  operating results for the
three and six months ended June 30, 1996 and 1995 (in thousands):<PAGE>


                                  THREE MONTHS ENDED    SIX MONTHS ENDED  
                                        JUNE 30,            JUNE 30,      
                                  ------------------   ------------------
                                    1996      1995       1996      1995  
                                  --------  --------   --------  --------
OPERATING RESULTS
  Revenues                        $ 97,249  $ 62,425   $181,795  $123,555 
  Operating margin (1)              48,022    26,261     89,044    51,296
  Operating income                  27,192     9,476     49,625    18,822
  Other income (expense)             4,169    (2,052)     1,620    (3,351)
  Provision for income taxes        (8,849)     (145)   (13,616)     (184) 
  Minority interest                   (931)     (596)    (1,358)   (1,198)
  Income from continuing
    operations                      21,581     6,683     36,271    14,089
  Income from discontinued
    operation                            -       401          -       617
  Net income                        21,581     7,084     36,271    14,706  

REVENUES
  Contract drilling
    Gulf of Mexico jackup rigs    $ 41,279  $ 26,172   $ 77,332  $ 53,894
    North Sea jackup rigs           19,824    12,128     40,746    22,809
    Asia jackup rigs                 1,933         -      1,933         -
      Total jackup rigs             63,036    38,300    120,011    76,703
    Barge drilling rigs             19,179    15,649     35,087    31,146
    Platform rigs                    1,421         -      1,421         -
    Dormant operations (2)              38         -         38         -
      Total contract drilling       83,674    53,949    156,557   107,849
  Marine transportation
    AHTS (3)                         3,852     3,382      7,630     6,175 
    Supply                           7,811     4,357     14,406     8,289
    Mini-supply                      1,912       737      3,202     1,242
      Total marine transportation   13,575     8,476     25,238    15,706
        Total                     $ 97,249  $ 62,425   $181,795  $123,555 

OPERATING MARGIN (1)
  Contract drilling
    Gulf of Mexico jackup rigs    $ 20,305  $  8,723   $ 36,459  $ 19,004
    North Sea jackup rigs            6,592     4,913     16,021     8,433
    Asia jackup rigs                   690         -        690         -
      Total jackup rigs             27,587    13,636     53,170    27,437
    Barge drilling rigs             13,119     9,920     23,113    19,654
    Platform rigs                      472         -        472         -
    Dormant operations (2)              22       (65)       (9)      (179)
      Total contract drilling       41,200    23,491     76,746    46,912
  Marine transportation
    AHTS (3)                         1,827     1,488      4,004     2,573 
    Supply                           3,988     1,224      6,889     1,769
    Mini-supply                      1,007        58      1,405        42
      Total marine transportation    6,822     2,770     12,298     4,384
        Total                     $ 48,022  $ 26,261   $ 89,044  $ 51,296 

(1)   Defined as revenues  less operating expenses,  exclusive of  depreci-
      ation and general and administrative expenses.
(2)   The Company has a management contract on a non-owned platform rig off
      the  coast of China and owned  one land rig in the Middle East,  both
      of which were inactive.  The land rig was sold in mid-July 1996.<PAGE>


(3)   Anchor handling tug supply vessels.

The  following is  an  analysis of  certain  operating information  of  the
Company for the three and six months ended June 30, 1996 and 1995:

                                  THREE MONTHS ENDED    SIX MONTHS ENDED  
                                        JUNE 30,            JUNE 30,      
                                  ------------------   ------------------
                                    1996      1995       1996      1995  
                                  --------  --------   --------  --------
CONTRACT DRILLING
  Utilization:
    Gulf of Mexico jackup rigs       91%       84%        91%       86%
    North Sea jackup rigs            78%       57%        86%       59%
    Asia jackup rigs                 86%        -         86%        -   
      Total jackup rigs              88%       78%        89%       80%
    Barge drilling rigs              85%       87%        82%       93%
    Platform rigs                    78%        -         78%        -    
      Total                          87%       81%        87%       84%  

  Average day rates:
    Gulf of Mexico jackup rigs    $ 25,825  $ 19,139   $ 24,631  $ 19,571
    North Sea jackup rigs           45,522    43,410     44,375    41,269
    Asia jackup rigs                24,772         -     24,772         -
      Total jackup rigs             29,640    23,205     28,821    23,216
  Barge drilling rigs               24,768    19,717     23,327    18,542
  Platform rigs                     15,074         -     15,074         -
    Total                         $ 27,879  $ 22,028   $ 27,106  $ 21,595

MARINE TRANSPORTATION 
  Utilization:
    AHTS *                           72%       87%        80%       78%
    Supply                           90%       79%        90%       75%
    Mini-supply                      95%       57%        80%       49%  
      Total                          88%       75%        86%       70%  

  Average day rates:
    AHTS *                        $  9,767  $  7,124   $  8,713  $  7,069
    Supply                           4,142     2,897      3,840     2,887
    Mini-supply                      2,766     1,786      2,730     1,757
      Total                       $  4,568  $  3,543   $  4,351  $  3,511

*  Anchor handling tug supply vessels.

The Company's consolidated revenues, operating margin and operating  income
(defined as revenues less operating expenses,  depreciation and general and
administrative expenses) for the  three and six months ended  June 30, 1996
increased significantly from  the same periods in 1995.  The increases were
due  primarily to  increased  average day  rates  and utilization  for  the
Company's rigs and vessels  in 1996 and the return to work  of various rigs
and vessels that were in shipyards for major modifications and enhancements
in the prior year periods.  <PAGE>


Contract Drilling
- -----------------

The following  is an  analysis of the  Company's offshore drilling  rigs at
June 30, 1996 and 1995:

                                              1996       1995   
                                             ------     ------
                Jackup rigs:
                    Gulf of Mexico             23         18
                    North Sea                   6          6
                    Asia                        5 (1)      -  
                        Total jackup rigs      34         24
                Barge rigs - Venezuela         10         10 
                Platform rigs                  10 (2)      -  
                        Total                  54         34  

                (1) Includes  one jackup rig operated by the
                    Company that is 49% owned.

                (2) Seven are  located in the  Gulf of  Mexico,
                    two off the coast of California and  one is
                    not   owned  but   is   operated   under  a
                    management contract off the coast of China.

Revenues and  operating margins for the Company's contract drilling segment
for the three months ended June 30, 1996 were up 55% and 75%, respectively,
and  for  the  six  months  ended  June  30, 1996  were  up  45%  and  64%,
respectively, compared  to  the  prior  year periods.    The  significantly
improved 1996 results were primarily due to increased current year activity
levels in the Gulf of Mexico and the North  Sea.  Average day rates for the
three and  six months ended June  30, 1996 on the Company's  jackup rigs in
the Gulf  of Mexico increased by 35% and 26%, respectively, and average day
rates on  the Company's  North  Sea jackup  rigs increased  by  5% and  8%,
respectively, as compared to the prior year periods. 

The  1996 results also benefitted  from the return to work  of three of the
Company's  jackup rigs, two in the North Sea and one in the Gulf of Mexico,
that were undergoing major modifications and enhancements in the prior year
periods.   The increased revenue  and operating margin levels  in 1996 were
also due to payments received in  1996 on the Venezuela barge drilling rigs
related to  the recovery of past  cost increases and  the contribution from
the rigs acquired from Dual.  

The above increases in  revenue and operating margin were  partially offset
by  two barge drilling rigs in Venezuela  coming off contract in the second
quarter of 1995.  One of  the barge drilling rigs returned to work  in mid-
May 1996  and the  other in early-July  1996 under new  long-term contracts
with Lagoven S.A. ("Lagoven"),  a subsidiary of the Venezuela  national oil
company.

The Venezuelan currency  experienced significant devaluation  in the  first
half  of 1994 and the Venezuelan government established policies to control
the  exchange rate of the  Venezuelan currency and  severely restricted the
conversion  of  Venezuelan  currency  to  U.S.  dollars.    The  Venezuelan
government further devalued the Venezuela currency against the  U.S. dollar
in  late 1995.    In  April  1996, the  Venezuela  government  removed  all<PAGE>


conversion and exchange controls and the  Venezuelan currency began trading
freely.  To date, the Company has not experienced problems  associated with
receiving U.S. dollar payments  with respect to the U.S.  dollar portion of
its  contracts with  Lagoven.   Changes in  these conditions,  other policy
enactments, or  political developments in  Venezuela could have  an adverse
effect  upon the  Company.   However,  the  Company believes  such  adverse
effects are unlikely due  to the volume of U.S. dollars  paid to the parent
company of Lagoven for its oil exports.

Marine Transportation
- ---------------------

The following is an analysis of the Company's marine transportation vessels
as of June 30, 1996 and 1995:

                                              1996       1995   
                                              ----       ----

                AHTS *                          6          6
                Supply                         23         21
                Mini-Supply                     8          8 
                   Total                       37         35  

                *   Anchor handling tug supply vessels.

Revenues and  operating margins  for  the Company's  marine  transportation
segment for the  three months ended  June 30,  1996 were up  60% and  146%,
respectively, and for the  six months ended June  30, 1996 were up  61% and
181%, respectively,  in comparison to  the prior  year periods.   The  1996
results improved significantly from the prior year periods due to increased
current year activity levels in the Gulf of Mexico.  

Average day rates for  the Company's marine transportation vessels  for the
three and six months ended June 30, 1996 increased by 29% and 24%  from the
prior year  periods.  The 1996  results also benefitted from  the return to
work  in  mid-1995  of  four   mini-supply  vessels  that  were  undergoing
modifications  in the  prior year  periods and  the purchase of  six supply
vessels  in  late-1995,  four  of  which  were  previously  operated  under
operating lease agreements.
 
Depreciation and Amortization
- -----------------------------

Depreciation  and amortization  expense increased  by 25%  and 23%  for the
three and  six months ended June 30, 1996, respectively, as compared to the
prior  year  periods due  primarily to  depreciation associated  with major
modifications and enhancements on various rigs and vessels that returned to
work in 1995 and 1996, the addition of a North Sea jackup rig in March 1995
and  depreciation   on  six   supply  vessels   purchased  in  late   1995.
Depreciation  and  amortization  expense  also increased  in  1996  due  to
depreciation and amortization associated with the rigs acquired from Dual. <PAGE>


Other Income (Expense)
- ----------------------

Other income (expense) for the three and six months ended June 30, 1996 and
1995 was as follows (in thousands):

                         THREE MONTHS ENDED     SIX MONTHS ENDED  
                               JUNE 30,              JUNE 30,      

                         ------------------    ------------------
                           1996      1995        1996      1995  
                         --------  --------    --------  --------

    Interest income      $ 1,098   $ 1,652     $ 2,334   $ 3,801
    Interest expense      (4,387)   (4,104)     (8,436)   (8,495)
    Other, net             7,458       400       7,722     1,343
                         --------  --------    --------  --------
                         $ 4,169   $(2,052)    $ 1,620   $(3,351)

The Company's  interest income decreased for the three and six months ended
June 30, 1996 as compared to the prior year periods due primarily  to lower
average cash balances in the current year periods.   

"Other,  net" increased for the three and six months ended June 30, 1996 as
compared to the prior year periods due  primarily to a $6.4 million gain on
settlement with TransAmerican Natural Gas Corporation in the second quarter
of 1996 as  discussed in "Note  3 -  Gain on Settlement"  to the  Company's
Consolidated Financial Statements.  

Provision for Income Taxes
- --------------------------

The Company's provisions for income  taxes increased significantly for  the
three and  six months  ended June 30,  1996 as  compared to the  prior year
periods  due primarily to increased  deferred income tax  provisions in the
current  year periods.  The  Company's U.S. deferred  income tax provisions
for  the three and six months ended June 30, 1996 increased by $6.4 million
and $8.3 million, respectively,  from the prior year periods  due primarily
to the timing of the recognition of  the expected utilization or expiration
of  U.S. net  operating  loss  carryforwards.    The  deferred  income  tax
provisions in the U.S., Venezuela and the United Kingdom also increased for
the three and  six months ended June 30, 1996 as compared to the prior year
periods due, in part, to increased differences in the book and tax basis of
property and  equipment as the  Company's asset additions  and enhancements
have increased  the  difference between  the  book  and tax  basis  of  the
Company's property and equipment. 

LIQUIDITY AND CAPITAL RESOURCES

Cash Flow and Capital Expenditures
- ----------------------------------

The  Company's cash flow from  operations and capital  expenditures for the
six months ended June 30, 1996 and 1995 were as follows (in thousands): <PAGE>


                                              1996           1995   
                                            --------       --------

        Cash flow from operations           $ 83,947       $ 43,713      
        Capital expenditures
           Sustaining                       $  6,264       $  5,228
           Enhancements                       49,754         48,321
           New Construction                        -            766
           Acquisitions                       13,271         12,760
                                            --------       --------
                                            $ 69,289       $ 67,075

Cash flow from  operations increased by  $40.2 million for  the six  months
ended June 30,  1996 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 six  months of 1996  as compared  to the  prior year
period and an increase in  cash flow from the net change in various working
capital accounts.  

Management  anticipates  that   capital  expenditures  in   1996  will   be
approximately  $130.0 million to $150.0 million, including $27.0 million to
$30.0  million for existing operations, $90.0 million to $107.0 million for
modifications  and  enhancements of  rigs  and  vessels and  $13.0  million
related to a deferred purchase  payment on a North Sea jackup  rig acquired
in March 1995.   The Company may spend additional funds  to acquire rigs or
vessels in 1996, depending on market conditions and opportunities.


Financing and Capital Resources   
- -------------------------------

The  Company's long-term debt, total capital and  debt to capital ratios at
June 30,  1996 and December  31, 1995  are summarized below  (in thousands,
except percentages):

                                            JUNE 30,     DECEMBER 31,
                                              1996           1995     
                                           ----------    ------------

        Long-term debt                     $  272,988      $159,201      
        Total capital                       1,060,100       690,450
        Long-term debt to total capital           26%           23%

The increase in long-term debt relates  primarily to $128.2 million of debt
assumed in the acquisition of Dual offset, in part, by scheduled repayments
of existing debt.  The total capital of the Company increased due primarily
to the issuance of shares of  the Company's common stock in the acquisition
of  Dual valued at  $218.4 million, the  net increase in  long-term debt as
discussed above  and the profitability  of the  Company for the  six months
ended June 30, 1996.  

On June  12, 1996, the Company  acquired Dual pursuant to  an Agreement and
Plan  of Merger  among the Company,  DDC Acquisition Company  and Dual (the
"Merger Agreement") approved by  Dual stockholders on that date.  Under the
terms  of  the Merger  Agreement,  each  share  of  Dual common  stock  was
immediately  converted  into  the right  to  receive  0.625  shares of  the
Company's  common stock.   The  Company  issued approximately  10.1 million<PAGE>


shares of its common stock to the previous  Dual stockholders in connection
with the acquisition of Dual.  

The  Company had $39.0 million undrawn under  a revolving line of credit at
June 30,  1996.  The revolving  line of credit is  reduced semi-annually by
$7.0 million commencing in  October 1996, with the remaining  line expiring
in  October  2001.    See  "Note  4  -  Long-Term  Debt"  to the  Company's
Consolidated Financial Statements.   

The Company's liquidity position at June 30, 1996 and December  31, 1995 is
summarized in the table below (in thousands, except ratios):

                                            JUNE 30,     DECEMBER 31,
                                              1996           1995     
                                           ----------    ------------

        Cash and short-term investments     $76,743        $82,064
        Working capital                      97,749         78,945
        Current ratio                           1.9            1.9

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  mid-July 1996, the Company  purchased an additional  $3.8 million (face
amount) of  the Dual  9 7/8%  Senior Subordinated Notes  due 2004  ("9 7/8%
Notes") on the open  market.  Additionally,  in mid-July 1996 $5.0  million
(face amount)  of the 9  7/8% Notes were  redeemed pursuant to an  offer by
Dual to purchase the 9 7/8% Notes following a change in control.

The Company sold substantially all of the assets  of its technical services
business in  1995.  The consideration  received by the Company  in the sale
consisted of  $11.8  million  in cash  and  two notes  from  the  purchaser
("Purchaser")  totalling $6.1  million.   The  notes  consisted of  a  $3.6
million promissory note and a $2.5 million convertible promissory note.  In
early July 1996, the Purchaser completed an  initial public offering of its
common  stock ("Purchaser's IPO").  In connection with the Purchaser's IPO,
the $ 3.6  million promissory note  was paid in full  and the $2.5  million
convertible  promissory  note  was  converted  into  common  stock  of  the
Purchaser.    The  Purchaser's common  stock  received  by  the Company  in
connection with the conversion  of the $2.5 million convertible  promissory
note was  sold for $5.4 million  in the Purchaser's IPO.   The Company will
record a gain  of approximately $2.9  million, exclusive of  taxes, in  the
third  quarter of 1996 associated  with the sale  of the Purchaser's common
stock  received  by  the  Company  from  conversion  of  the  $2.5  million
convertible promissory note.  

In  mid-July 1996,  the  Company sold  its  remaining land  rig, which  was
located in  the Middle East, for $2.5  million.  The Company  will record a
gain of approximately  $750,000, exclusive  of income taxes,  in the  third
quarter of 1996 associated with the sale of the rig. <PAGE>


PRIVATE LITIGATION SECURITIES REFORM ACT OF 1995

This   report   contains  forward-looking   statements  based   on  current
expectations  that  involve  a number  of  risks  and  uncertainties.   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 the  following:
industry  conditions  and competition,  cyclical  nature  of the  industry,
worldwide  expenditures for  oil and  gas drilling,  operational risks  and
insurance, risks associated  with operating in  foreign jurisdictions,  and
the  risks described  from time  to time  in the  Company's reports  to the
Securities and  Exchange Commission,  which  include the  Company's  Annual
Report on Form 10-K for the year ended December 31, 1995.  <PAGE>



                        PART II - OTHER INFORMATION


ITEM 1.     LEGAL PROCEEDINGS

In February 1991, a wholly-owned subsidiary of  the Company filed an action
against TransAmerican Natural Gas Corporation and related subsidiaries  and
affiliates ("TransAmerican")  seeking damages for  breach of contract.   In
August 1991, TransAmerican filed  a state court action against  the wholly-
owned subsidiary of the  Company seeking damages for breach of contract and
tort  claims.  On April  5, 1996, the U.S. District  Court for the Southern
District   of  Texas,   Houston  Division,   entered  a   judgment  against
TransAmerican.  As a result of the judgment, on April 18,  1996 the wholly-
owned  subsidiary of the Company  entered into a  settlement agreement with
TransAmerican.  Under the terms of the  settlement agreement, TransAmerican
paid the wholly-owned subsidiary of the Company approximately $7.3 million.
Additionally,  all  claims  or causes  of  action  which  TransAmerican had
against the  Company or  its wholly-owned  subsidiary have  been dismissed.
The Company recorded a  gain on the  settlement with TransAmerican of  $6.4
million in the second quarter of 1996.   

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

On May  21, 1996, the  Company held  an annual meeting  of stockholders  to
consider  the following proposals: "Proposal  1" - To  elect three Class II
directors;  "Proposal  2"  - To  approve  the  Company's  1996 Non-Employee
Director Stock Option  Plan; and "Proposal 3" - To  approve the appointment
of  Price Waterhouse LLP as the company's independent accountants for 1996.
A description of the foregoing matters is contained in  the Company's proxy
statement,  dated March 25,  1996, relating to  the 1996 annual  meeting of
stockholders.

There were 60,660,485 shares of the Company's common stock entitled to vote
at the annual meeting based on the March 26, 1996 record date.  The Company
solicited  proxies pursuant to Regulation 14 of the Securities Exchange Act
of  1934, and  there  was no  solicitation  in opposition  to  management's
nominees for  directors as  listed in the  proxy statement.   Each director
received a minimum of  53,000,000 votes, which was in excess  of 87% of the
outstanding common shares entitled to vote.

With respect to Proposal 1 listed above, the voting was as follows:

                                  VOTES FOR    VOTES AGAINST   ABSTENTIONS
                                  ----------   -------------   -----------

            Craig I. Fields       53,162,916       824,849           471
            Morton H. Meyerson    53,161,796       825,859           581
            Richard A. Wilson     53,162,998       824,846           393

With respect to Proposals 2 and 3 listed above, the voting was as follows:

                                  VOTES FOR    VOTES AGAINST   ABSTENTIONS
                                  ----------   -------------   -----------

            Proposal 2            52,097,091     1,295,386       156,670
            Proposal 3            53,886,730        54,905        46,379<PAGE>



ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

        (a)     Exhibits and Exhibit Index

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

                  10.25       Amendment No. 1 dated  as of June 13, 1996 to
                              the  Amended  and  Restated  Credit  Facility
                              Agreement dated as  of September 27, 1995  by
                              and  among ENSCO  Offshore Company  and ENSCO
                              Offshore  U.K.  Limited,  as  borrowers,  and
                              Christiana  Bank  OG  Kreditkasse,  New  York
                              Branch,  and den  Norske  Bank  AS, New  York
                              Branch, as the Banks

                  10.26       Amendment No. 3, dated June 13, 1996, to  the
                              First Preferred Fleet Mortgage dated December
                              17,  1993,  as  amended,  by  ENSCO  Offshore
                              Company and Bankers Trust Company, as trustee
                              for  the  benefit   of  Christiana  Bank   OG
                              Kreditkasse, New York  Branch, and den Norske
                              Bank AS, New York Branch.

                  10.27       First Preferred Fleet Mortgage dated June 13,
                              1996 by ENSCO Offshore Company II and Bankers
                              Trust Company, as trustee for the  benefit of
                              Christiana  Bank  OG  Kreditkasse,  New  York
                              Branch,  and  den Norske  Bank  AS, New  York
                              Branch.

                    27  Financial Data Schedule
            
            
        (b)     Reports on Form 8-K

                The Company filed  a Current Report on Form 8-K  dated June
                12, 1996, with respect to the acquisition of DUAL  DRILLING
                COMPANY  ("Dual")  pursuant  to an  Agreement  and Plan  of
                Merger  between the  Company, DDC  Acquisition  Company and
                Dual.<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:  August 1, 1996              /s/  C. Christopher Gaut          
      ------------------           ----------------------------------
                                   C. Christopher Gaut
                                   Chief Financial Officer


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



                              AMENDMENT NO. 1

                                     TO

                   AMENDED AND RESTATED CREDIT AGREEMENT

     AMENDMENT NO. 1 dated as of June  13, 1996 to the Amended and Restated

Credit  Facility  Agreement dated  as of  September  27, 1995  (the "Credit

Agreement"), among  ENSCO OFFSHORE  COMPANY,  a corporation  organized  and

existing under  the laws  of  the State  of Delaware,  ENSCO OFFSHORE  U.K.

LIMITED, a corporation  organized and  existing under the  laws of  England

(collectively, the "Original Borrowers"), CHRISTIANIA  BANK OG KREDITKASSE,

New York Branch, a Norwegian bank and DEN NORSKE BANK ASA, New York branch,

a  Norwegian bank, (the "Banks"), CHRISTIANIA BANK OG KREDITKASSE, New York

Branch,  a Norwegian  bank and  DEN  NORSKE BANK  ASA, New  York Branch,  a

Norwegian bank, as Agents for the Banks (the "Agents") and CHRISTIANIA BANK

OG KREDITKASSE, New York  Branch, a Norwegian bank as  Administrative Agent

(the "Administrative Agent").

                            W I T N E S S E T H:

     WHEREAS, pursuant to Assignment and Acceptance Agreements dated  April

10, 1996 Banque Indosuez and MeesPierson N.V. became Banks under the Credit

Agreement; and

     WHEREAS, ENSCO has  acquired by merger Dual Holding  Company (formerly

known as Dual  Drilling Company; "Dual Holding  Company"), its subsidiaries

and  affiliates and has caused four of  the drilling rigs formerly owned by

Dual Drilling Company subsidiaries to be transferred to a newly established

Delaware company named ENSCO  Offshore Company II ("ENSCO Offshore  II"), a

wholly-owned subsidiary of Dual Holding Company; and

     WHEREAS, the Banks and the Original Borrowers wish to add Dual Holding

Company  as a  Borrower, add  a  new revolving  loan and  letter of  credit

facility  to the  Credit Agreement  and make  other changes  to the  Credit

Agreement;<PAGE>


     NOW  THEREFORE, in consideration of  the above recitals  and for other

good  and valuable consideration, the  receipt and sufficiency  of which is

hereby acknowledged, the  parties agree  to amend the  Credit Agreement  as

follows:

     1.   Section 1.1 of the Credit Agreement is hereby amended as follows:

     (a)  The definition of "Advance" is hereby amended to read as follows:

     "Advance"  means a  loan  by the  Banks  to the  Borrowers  under
     Facility A, Facility B or Facility C.

     (b)  The definition  of "Assignments"  is  hereby amended  to read  as

follows:

     "Assignments" means the Assignment of Insurances on the Rigs, the
     Assignment of Drilling Contract Revenues and Earnings on the Rigs
     both   dated  December  17,  1993   and  the  ENSCO  Offshore  II
     Assignments 

     (c)  The definition  of "Commitments"  is  hereby amended  to read  as

follows:

     "Commitments" means a maximum of USD 150,000,000 and "Commitment"
     means  such Bank's  portion of  the  Commitments as  indicated on
     Schedule 1 to Amendment No. 1 as both may be reduced from time to
     time pursuant to the terms of this Agreement.

     (d)  The  definition of "Credit Facility" is hereby amended to read as

follows:

     "Credit  Facility" means  the  aggregate amount  of Advances  made and
     outstanding and Letters of Credit issued hereunder and outstanding and
     the aggregate amount of the unused but still available  portion of the
     Commitments.

     (e)  The  definition  of "Facility  A" is  hereby  amended to  read as

follows:

     "Facility  A" means the reducing  revolving loan and  letter of credit

facility described in Section 2 of this Agreement.

     (f)  The definition of "Facility A  Commitments" is hereby amended  to

read as follows:

     "Facility A Commitments" means USD 50,000,000,  subject to Section 4.6
     below,  and "Facility A Commitment"  means each Bank's  portion of the
     Facility A Commitments as indicated on Schedule 1 to Amendment No. 1.<PAGE>


     (g)  The definition of "Notes" is hereby amended to read as follows:

     "Notes" means  the  Facility  A Note,  the  Facility B  Note  and  the
     Facility C Note."

     (h)  The definition of "Loan  Documents" is hereby amended to  read as

follows:

     "Loan  Documents"  means  this  Agreement,   the  Mortgages,  the
     Assignments, the Pledge, the ENSCO Guaranty, the Notes, the Trust
     Indenture and the New Loan Documents.

     (i)  The definition of "Mortgages" is amended to read as follows:

     "Mortgages" means  the U.S. First Preferred Fleet  Mortgage (the "U.S.
     Mortgage") on the U.S. flag Rigs, the Bahamian Statutory Mortgages and
     Deed  of  Covenants dated  December 17,  1993  (the "Bahamian  Deed of
     Covenants")  on the  Bahamian flag  Rigs, as  amended by  the Mortgage
     Amendments,  and  the Liberian  First  Preferred  Fleet Mortgage  (the
     "Liberian Mortgage") on the  ENSCO Offshore II Rigs,  all in form  and
     substance satisfactory to the Banks.

     (j)  The definition of "Rigs" is hereby amended to read as follows:

     "Rigs" means the fifteen (15) U.S.  flag drilling rigs, the three  (3)
     Bahamian  flag drilling rigs and  the four (4)  Liberian flag drilling
     rigs listed on Schedule 2 attached to Amendment No. 1.

     (k)  The definition  of "Subsidiaries"  is hereby amended  to read  as

follows:

     "Subsidiaries" means  ENSCO Platform Company, a  Delaware corporation,
     ENSCO Platform AS, a Norwegian corporation, ENSCO Oceanics Company II,
     a Delaware corporation, ENSCO Maritime Limited, a Bermuda corporation,
     ENSCO Arabia Limited, a Saudi Arabian corporation, ENSCO Asia Company,
     a Delaware Corporation, P.T. ENSCO Perkasa, an Indonesian corporation,
     ENSCO  Malaysia Company,  a Delaware  corporation, Sime  Dual Drilling
     SDN.  BND, a Malaysian corporation, Sime Dual Drilling Ltd., a Bermuda
     corporation and any  additional companies formed  pursuant to  Section
     12.10 below.

     (l)  The definition of "Unencumbered  Rigs" is hereby amended to  read
as follows:

     "Unencumbered Rigs" means the  three (3) U.S. flag drilling  rigs, the
     three  (3) Bahamian  flag drilling  rigs, the  five (5)  Liberian flag
     drilling  rigs and  the  nine (9)  platform  drilling rigs  listed  an
     Schedule 3 attached to Amendment No. 1.

     (m)  The following new definitions are hereby added to

Section 1.1 of the Credit Agreement:

     "Account Party" shall mean for Letters of Credit issued under Facility
     A, ENSCO  Offshore and ENSCO U.K. and shall mean for Letters of Credit<PAGE>


     issued under Facility C, Dual Holding Company.

     "Availability  Period" means the period commencing on the Closing Date
     and ending on the Maturity Date.

     "Borrowers" means the Original Borrowers and Dual  Holding Company and
     any of their permitted successors or assigns.

     "Closing Date" means  the date on which  the conditions precedent
     contained in Section 18 of Amendment No. 1  are fulfilled and the
     modifications to the Credit  Agreement contemplated by  Amendment
     No. 1 become effective.

     "Endorsements No. 1" means  the Endorsements No. 1 to  the Notes,
     substantially in the  form of  Exhibits A-1 and  A-2 attached  to
     Amendment No. 1.

     "ENSCO Offshore II Assignments" means  the Assignment of Insurances on
     the ENSCO Offshore  II Rigs  and the Assignment  of Drilling  Contract
     Revenues and Earnings on the ENSCO  Offshore II Rigs, both in form and
     substance satisfactory to the Banks.

     "ENSCO Offshore II Guaranty"  means the guaranty by ENSCO  Offshore II
     of  the  obligations  of  Dual  Holding  Company   under  Facility  C,
     substantially in the form of Exhibit E attached to Amendment No. 1.

     "ENSCO Offshore II  Rigs" means  the four (4)  Liberian flag  drilling
     rigs  owned  by ENSCO  Offshore  II  and described  on  Schedule  2 to
     Amendment No. 1.

     "Facility  C" means the reducing  revolving loan and  letter of credit
     facility described in Section 3A of this Agreement.

     "Facility C Commitments" means USD 50,000,000, subject to Section  4.6
     below,  and "Facility C Commitment"  means each Bank's  portion of the
     Facility C Commitments as indicated on Schedule 1 to Amendment No. 1.

     "Facility  C Note" means the  promissory note of  Dual Holding Company
     substantially in the form  of Exhibit B to Amendment No.  1 evidencing
     Dual Holding Company's obligations under Facility C of this Agreement,
     and all renewals, extensions, rearrangements and replacements thereof.

     "Guaranty  Payment" means  any amount paid  out by  the Administrative
     Agent on  behalf of the  Banks as  a result of  any drawing under  any
     Letter of Credit.

     "Letters of Credit" means the stand-by letters of  credit, performance
     guaranties or  bid  bonds issued  by  the Administrative  Agent  under
     Facility A or Facility C of this Agreement, in  the forms agreed to by
     the Administrative Agent pursuant to Section 4.7(b) of this Agreement.

     "Liberian Mortgage" means the Liberian First Preferred Fleet  Mortgage
     on  the ENSCO Offshore II  Rigs in favor  of the Trustee,  in form and
     substance satisfactory to the Banks.

     "New Loan  Documents"  means  Amendment  No.  1,  Endorsements  No. 1,
     Amendment  No.  1  to  the  ENSCO  Guaranty,  the  ENSCO  Offshore  II<PAGE>


     Assignments,  the ENSCO Offshore II Guaranty, the Facility C Note, the
     Trust  Indenture  Amendment,  the  U.S.  Mortgage  Amendment  and  the
     Liberian Mortgage.

     "Request for  Letter of Credit" means  a Request for Letter  of Credit
     given by ENSCO Offshore II pursuant to  Section 4.5 of this Agreement,
     substantially in the form of Exhibit C to Amendment No. 1.

     "Trust  Indenture  Amendment" means  Supplement  No.  1 to  the  Trust
     Indenture, in form  and substance  satisfactory to the  Banks and  the
     Trustee.

     "U. S. Mortgage Amendment" means Amendment No. 3 to the U.S. Mortgage,
     in form and substance satisfactory to the Banks.


     2.  Facility A.   Section 2. of the Credit Agreement is hereby amended

to read as follows:

     "Section 2.  Facility A

     2.1. Reducing Revolving Credit.

          (a)  Upon the  terms and  subject  to the  conditions herein  set
               forth,  each Bank  agrees, from  time to  time prior  to the
               Maturity Date, to make  its share of an Advance  or Advances
               to ENSCO Offshore and ENSCO U.K. in the aggregate amount not
               to exceed at any time USD 50,000,000 subject to Section 4.6.
               below.

          (b)  Within the  USD  50,000,000  limit  referred  to  above  and
               subject  to the reduction  requirements of  Sections 6.2(a),
               6.2(b)  and  6.4(d) below  and  the  transfer provisions  of
               Section 4.6  below, ENSCO Offshore and ENSCO U.K. may borrow
               and prepay such  Advances pursuant to Section  6.3 below and
               reborrow under Section 2.1(a) above.  

          (c)  All Advances under Facility  A shall be in a  minimum amount
               of USD 5,000,000 or if greater, in integral multiples of USD
               1,000,000 or, in any event, the remaining availability under
               Facility A.

     2.2. Letters  of Credit.   On the terms and  subject to the conditions
          hereof, the Banks agree that during  the Availability Period, the
          Administrative Agent will issue on behalf of the Banks Letters of
          Credit for the account of  ENSCO Offshore or ENSCO U.K to  act as
          performance  guarantees  and   bid  bonds  or   to  secure   such
          performance  guarantees  or  bid  bonds  or  for  other  purposes
          approved by  the Agents in a total amount which when added to any
          Letters of  Credit issued and outstanding under  Facility C shall
          not  exceed  at  any  time  USD  15,000,000.    Within  such  USD
          15,000,000 limit, ENSCO  Offshore and ENSCO U.K.  may, during the
          Availability Period, request new  Letters of Credit to  be issued
          by the Administrative Agent on behalf of the Banks as old Letters
          of Credit terminate or expire.<PAGE>


     2.3. Counter Indemnity.   ENSCO Offshore  and ENSCO  U.K. jointly  and
          severally agree to immediately reimburse the Administrative Agent
          for  the account  of the  Banks for any  Guaranty Payment.   Upon
          receipt of such reimbursement by the Administrative Agent,  ENSCO
          Offshore and ENSCO U.K.  may request the issuance of  new Letters
          of  Credit  pursuant  to the  terms,  and  within  the limits  of
          Sections 2.2 and 4.7 of this Agreement.

     2.4. Sublimit.   Except  as permitted  by the  transfer provisions  of
          Section  4.6 below, the aggregate amount of Letters of Credit and
          Advances that may be outstanding under Facility A at any time may
          not be greater than USD 50,000,000.

     2.5. The Facility A Note.  The obligations of ENSCO Offshore and ENSCO
          U.K. to pay the principal and interest on all Advances made under
          Facility A  and to  reimburse  the Administrative  Agent for  any
          Guaranty Payment and interest  thereon shall be evidenced by  the
          Facility A Note.

     3.   Facility C.  There is hereby  added to the Credit Agreement a new
Section 3A as follows:

     "Section 3A.  Facility C.

               3A.1 Revolving Credit.   (a) Upon the  terms and subject  to
          the conditions herein set  forth, each Bank agrees, from  time to
          time prior  to the Maturity Date, to make its share of an Advance
          or  Advances  to  Dual Holding  Company,  the  aggregate of  such
          Advances not to  exceed at  any time USD  50,000,000, subject  to
          Section 4.6 below.

               (b)  Within the  USD 50,000,000 limit referred  to above and
          subject to the reduction requirements  of Section 6.2(a) and  (b)
          and Section 6.4(d) below, and the transfer provisions of  Section
          4.6  below,  Dual  Holding Company  may  borrow  and  prepay such
          Advances pursuant to Section 6.3 below and reborrow under Section
          3A.1(a).

               (c)  All Advances  under Facility  C shall be  in a  minimum
          amount of USD 5,000,000  or if greater, in integral  multiples of
          USD 1,000,000 or, in any  event, the remaining availability under
          Facility C.

               3A.2 Letters  of Credit.  On the  terms and  subject to  the
          conditions  hereof,  the  Banks  hereby  agree  that  during  the
          Availability Period the Administrative Agent will issue on behalf
          of the Banks  Letters of Credit for  the account of  Dual Holding
          Company  to act  as performance  guarantees and  bid bonds  or to
          secure such  performance guarantees  or bid  bonds, or  for other
          purposes approved by  the Agents,  in a total  amount which  when
          added  to  any Letters  of  Credit issued  and  outstanding under
          Facility A shall not exceed  at any time USD 15,000,000.   Within
          such USD  15,000,000 limit Dual  Holding Company may,  during the
          Availability Period, request new  Letters of Credit to  be issued<PAGE>


          by the Administrative Agent on behalf of the Banks as old Letters
          of Credit terminate or expire.

               3A.3 Counter  Indemnity.    Dual Holding  Company  agrees to
          immediately reimburse the Administrative Agent for the account of
          the  Banks  for  any Guaranty  Payment.    Upon  receipt of  such
          reimbursement by  the Administrative Agent,  Dual Holding Company
          may request the issuance of new Letters of Credit pursuant to the
          terms, and within the limits, of Section 3A.2 above.

               3A.4 Sublimit.    Except  as   permitted  by  the   transfer
          provisions  of Section 4.6 below, the aggregate amount of Letters
          of Credit and Advances  that may be outstanding under  Facility C
          at any time may not be greater than USD 50,000,000.

               3A.5    The  Facility  C  Note.    Dual  Holding   Company's
          obligations to pay the principal and the interest on all Advances
          made under Facility  C and to reimburse  the Administrative Agent
          for any Guaranty Payment and interest  thereon shall be evidenced
          by the Facility C Note.

               3A.6  Guaranty of Facility C.  

                    (a)  ENSCO  Offshore hereby guarantees  the payment  by
               Dual Holding  Company of  all  amounts due  by Dual  Holding
               Company under  Facility C of  this Credit Agreement  and the
               Facility  C Note  (the obligations  of Dual  Holding Company
               under Facility C of this Credit Agreement and the Facility C
               Note  are  hereinafter  referred  to  as  the  "Facility   C
               Obligations")  and agrees  in addition  to  pay any  and all
               expenses incurred by  the Agents or  the Banks in  enforcing
               any of their rights under this Section 3A.6.

                    (b)  ENSCO Offshore hereby guarantees that the Facility
               C Obligations will be  paid strictly in accordance with  the
               terms of this Agreement and  the Facility C Note, regardless
               of any law, regulation  or order now or hereafter  in effect
               in  any jurisdiction  affecting  any of  such  terms or  the
               rights of the Agents or the Banks with respect thereto.  The
               liability of ENSCO Offshore under this Section 3A.6 shall be
               absolute, unconditional and irrevocable irrespective of:

                         (i)  any  lack  of validity  or  enforceability of
                    this Section 3A.6, any Facility C Advance, any Facility
                    C  Letter of Credit, the  Facility C Note  or any other
                    agreement   or  instrument  entered  into  between  the
                    Borrowers, the Banks, the Trustee or the Agents;

                         (ii) any change in  the time, manner  or place  of
                    payment of, or in any other  term of, all or any of the
                    Facility C  Obligations,  or  any  other  amendment  or
                    waiver of  or any consent to departure  from Section 3A
                    of this Agreement or the Facility C Note;

                         (iii)  any  circumstances  which  might  otherwise<PAGE>


                    constitute a  defense available to, or  a discharge of,
                    Dual  Holding  Company in  respect  of  the Facility  C
                    Obligations  or  ENSCO  Offshore  in  respect  of  this
                    Section 3A.6.

                    (c)  the guaranty  contained in this Section  3A.6 is a
               guaranty  of payment  and not of  collection and  the Agents
               shall  not be required to  make any demand  upon, or exhaust
               their   remedies  against,   Dual  Holding   Company  before
               requiring ENSCO Offshore to pay under this guaranty.

                    (d)  The guaranty contained in this Section  3A.6 shall
               continue to be effective  or be reinstated, as the  case may
               be, if  at any  time any  payment of any  of the  Facility C
               Obligations is rescinded  or must otherwise  be returned  by
               the Agents  or the Banks upon the  insolvency, bankruptcy or
               reorganization of Dual Holding Company or otherwise, all  as
               though such payment had not been made.

                    (e)  ENSCO    Offshore   hereby    waives   promptness,
               diligence, notice of  acceptance and any  other notice  with
               respect  to  any of  the  Facility  C  Obligations  and  the
               guaranty contained in this Section 3A.6 and any  requirement
               that  the Trustee, the Agents or the Banks exhaust any right
               or take any action against Dual Holding Company or any other
               person or entity or any collateral.

                    (f)  ENSCO Offshore will not exercise any rights  which
               it  may acquire  by  way of  subrogation under  the guaranty
               contained  in  this  Section  3A.6,  by  any  payment   made
               hereunder  or  otherwise, until  the Facility  C Obligations
               shall have been paid in full. If any amount shall be paid to
               ENSCO Offshore on account of such subrogation  rights at any
               time when all the Facility C Obligations shall not have been
               paid in full, such  amount, or such portion as  is necessary
               to fully  satisfy  the  Facility  C  Obligations,  shall  be
               forthwith paid to  the Administrative Agent  to be  credited
               and  applied against  the  Facility C  Obligations.   If (i)
               ENSCO  Offshore  shall  make payment  to  the Administrative
               Agent  of all or any part  of the Facility C Obligations and
               (ii) all the Facility  C Obligations shall be paid  in full,
               the Administrative Agent will, at ENSCO Offshore's  request,
               execute and deliver to ENSCO Offshore appropriate documents,
               without  recourse and  without  representation or  warranty,
               transferring to ENSCO Offshore or necessary to evidence  the
               transfer by subrogation to ENSCO Offshore of any interest in
               the Facility C  Obligations resulting from  such payment  by
               ENSCO Offshore."

     4.   Manner  of  Drawdown or  Manner of  Issuance.   Section 4  of the

Credit  Agreement  is hereby  amended  by adding  the  following additional

subsections:<PAGE>


          "4.5 Manner of Issuance of Letter of Credit

               (a)  The Account Party  requesting a Letter  of Credit shall
          give  the Administrative Agent a Request for Letter of Credit not
          later than 12:00  noon, New  York time, seven  (7) Business  Days
          (three (3)  Business Days if the form of the Letter of Credit has
          been approved  in advance by the Administrative  Agent) before it
          wishes to have a Letter of Credit issued.  The Request for Letter
          of Credit shall after  three (3) Business Days (one  (1) Business
          Day  if the  form of the  Letter of  Credit has  been approved in
          advance  by  the  Administrative   Agent)  be  irrevocable.   The
          Administrative Agent  shall promptly  notify  each Bank  of  each
          Request for Letter of Credit.

               (b)  Subject to Section 4.5(a) above,  if the issuance of  a
          Letter  of Credit  requested in  a Request  for Letter  of Credit
          fails to take place  or is delayed because any of  the conditions
          specified in  Section 8.2 hereof  are not satisfied,  the Account
          Party requesting  such  Letter  of  Credit  shall  indemnify  the
          Administrative Agent and the Banks against any loss or reasonable
          expenses incurred as a  result of the giving  of the Request  for
          Letter of Credit.   A certificate of the Administrative  Agent as
          to the amount of any such  loss or expenses incurred by the Banks
          or  the Administrative Agent  shall (save for  manifest error) be
          conclusive and binding on such Account Party for all purposes.

               (c)  The  Administrative Agent  shall, on  the date  of each
          issuance  of a  Letter of Credit  by it,  give each  Bank and the
          Borrowers written  notice  of  the  issuance of  such  Letter  of
          Credit, together with a copy of such Letter of Credit.

     4.6  Transfer of Unused Portion of Commitments

               (a)  After the  first Advance the Borrowers  may request the
          Banks to  transfer up  to  USD 15,000,000  but no  less than  USD
          500,000,  of the Commitments under  Facility A or  Facility C not
          used by the Borrowers to the other Facility.

               (b)  The Facility from which the amount is being transferred
          shall be reduced by the amount being transferred and the Facility
          to  which the amount is  being transferred shall  be increased by
          the amount being transferred without the requirement of  amending
          this Agreement,  however  endorsements  to  the  Facility  A  and
          Facility C Notes shall be made evidencing such transfers.

               (c)  The  Borrowers  may  request   a  transfer  of   unused
          Commitments under this  Section 4.6  up to six  times during  the
          term of this Agreement.

     4.7  Provisions of Letters of Credit

               (a)  Term.   Letters of Credit shall have terms of no longer
          than thirty  (30) months from  their date of  issuance; provided,
          however, that no  Letter of  Credit may have  an expiration  date
          later  than  the  Maturity Date  unless  expressly  agreed to  in<PAGE>


          writing by the Administrative Agent.

               (b)  Form.   Letters  of Credit  shall be  in such  forms as
          shall be acceptable to the Administrative Agent.   

               (c)  Recalculation.    Whenever  the   Administrative  Agent
          issues  a Letter of Credit in  a currency other than Dollars, the
          outstanding amount of such Letter of Credit at such time shall be
          calculated  on the  basis of  the Dollar  equivalent of  the face
          amount  of  such  Letter  of  Credit.     Any  Dollar  equivalent
          established according  to the preceding sentence  shall remain in
          effect until such date during the term of the Letter of Credit as
          the calculation of  the Dollar equivalent determined as above, if
          made on such date,  would yield a Dollar equivalent  which varies
          by  greater than 10.0% from the Dollar equivalent then in effect,
          at  which time the outstanding amount of the remaining Facility A
          or  Facility C  Commitments, respectively,  shall be  adjusted to
          reflect  the current Dollar equivalent of the face amount of such
          Letter of Credit.   Subsequent adjustments shall then be  made on
          any  date  on  which  the  current  calculation  of   the  Dollar
          equivalent  would yield  a result  which  varies by  greater than
          10.0% from the Dollar equivalent then in effect.

               (d)  Drawings Under Letters  of Credit.  The  Administrative
          Agent 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 such  proviso) it
          shall not  be a defense  to a claim  of the  Administrative Agent
          under Section 2.3  or Section 3A.3 above that  the Administrative
          Agent  could have resisted the  payment in respect  of which such
          claim is made. 

               (e)  Obligations Absolute.   The  obligation of  the Account
          Party for such Letter  of Credit to reimburse the  Administrative
          Agent on behalf of the Banks with respect to any Guaranty Payment
          (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 Account
          Parties  may have or have had against the Administrative Agent 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
          Administrative Agent 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 nonapplication or
          misapplication  by  the  beneficiary  of  the  proceeds  of  such
          drawing;  provided,  however, that  the  Account  Party for  such
          Letter  of  Credit  shall  not  be  obligated  to  reimburse  the
          Administrative  Agent  for  any  wrongful  payment  made  by  the
          Administrative Agent under a Letter of Credit as a result of acts
          or omissions  constituting willful misconduct or gross negligence
          on the part of the Administrative Agent. <PAGE>


               (f)  Security.   The obligations of any  Account Party under
          Section 2.3 and  Section 3A.3 above  shall be in addition  to and
          not in substitution for any security now or hereafter held by the
          Trustee in respect of the Account Parties' obligations under this
          Agreement.

               (g)  Certificates.  A certificate, together with evidence of
          payment submitted  by the  Administrative  Agent to  any  Account
          Party as  to the  amount  of any  Guaranty  Payment made  by  the
          Administrative  Agent  shall   (save  for   manifest  error)   be
          conclusive and binding on such Account Party for all purposes.

               (h)  Letter of Credit Participations.

                    (i)  Immediately    upon    the    issuance   by    the
               Administrative  Agent   of  any   Letter   of  Credit,   the
               Administrative Agent  shall  be  deemed  to  have  sold  and
               transferred to each other  Bank, and each such Bank  (each a
               "Participant")    shall    be    deemed   irrevocably    and
               unconditionally  to have  purchased  and  received from  the
               Administrative  Agent,  without  recourse  or  warranty,  an
               undivided interest  and participation, in proportion  to its
               Facility A  or Facility C Commitment,  respectively, in such
               Letter  of Credit,  each substitute  Letter of  Credit, each
               drawing made  thereunder and the obligations  of the Account
               Party for  such Letter of  Credit under this  Agreement with
               respect thereto (although the Letter of Credit fee  provided
               for in Section  20(b) of  Amendment No. 1  shall be  payable
               directly to the Administrative Agent for the account  of the
               Banks  and the Participants  shall have no  right to receive
               any portion  of any  facing fee  paid to the  Administrative
               Agent  pursuant to Section 20(c) of Amendment No. 1) and any
               security therefor or guaranty pertaining thereto.  

                    (ii) In determining whether to pay under any Letter  of
               Credit,  the   Administrative  Agent  shall  not   have  any
               obligation  relative  to  the  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  Administrative Agent  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 Administrative Agent  any resulting liability
               to the Participants.

                    (iii) In the event that the Administrative Agent  makes
               any  Guaranty Payment and the  Account Party for such Letter
               of Credit shall not  have reimbursed such amount in  full to
               the  Administrative  Agent   pursuant  to  Section   2.3  or
               Section 3A.3  above, the Administrative Agent shall promptly
               notify   each  Participant   of  such   failure,   and  each
               Participant  shall promptly and  unconditionally pay  to the
               Administrative  Agent  its   proportionate  share  of   such<PAGE>


               unreimbursed  Guaranty Payment  in Dollars  and in  same day
               funds: provided,  however,  that  no  Participant  shall  be
               obligated   to   pay  to   the   Administrative   Agent  its
               proportionate  share of  such unreimbursed  Guaranty Payment
               for any wrongful  payment made by  the Administrative  Agent
               under a Letter  of Credit as a  result of acts or  omissions
               constituting willful  misconduct or gross  negligence on the
               part  of the  Administrative  Agent.  If the  Administrative
               Agent so  notifies  any  Participant  required  to  fund  an
               unreimbursed Guaranty Payment prior to 12:00 Noon (New  York
               time)  on  any Business  Day,  such  Participant shall  make
               available  to  the  Administrative  Agent  its proportionate
               share of the amount of such unreimbursed Guaranty Payment on
               such Business Day  in same day funds.  If  and to the extent
               such Participant shall  not have so  made its  proportionate
               share of the  amount of such  unreimbursed Guaranty  Payment
               available  to  the  Administrative Agent,  such  Participant
               agrees to  pay to  the  Administrative Agent,  forthwith  on
               demand such amount, together with interest thereon, for each
               day from such date until the date such amount is paid to the
               Administrative  Agent at  the  overnight rate  for interbank
               transfers of Federal Funds.  The failure of any  Participant
               to  make   available  to   the   Administrative  Agent   its
               proportionate share  of  any unreimbursed  Guaranty  Payment
               shall not relieve  any other Participant  of its  obligation
               hereunder to make available to the Administrative Agent  its
               proportionate share of any  unreimbursed Guaranty Payment 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  Administrative Agent
               such  other  Participant's proportionate  share of  any such
               payment.

                    (iv) Whenever  the  Administrative  Agent   receives  a
               payment  of a  reimbursement obligation  as to which  it has
               received  any payments  from  the  Participants pursuant  to
               Section  4.7(h)(iii) above,  the Administrative  Agent shall
               pay  to each  Participant which  has paid  its proportionate
               share  of any Guaranty Payment,  in Dollars and  in same day
               funds,  an amount equal  to such Participant's proportionate
               share of any Guaranty Payment and interest thereon, accruing
               at  the overnight  rate for  interbank transfers  of Federal
               Funds until the date such Participant receives such payment.

                    (v)  The  obligations  of  the  Participants   to  make
               payments  to the  Administrative Agent  with respect  to any
               Guaranty  Payment 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 Administrative Agent's gross negligence or willful
               misconduct) and  shall be made in accordance  with the terms
               and conditions  of this  Agreement under all  circumstances,
               including,   without  limitation,   any  of   the  following
               circumstances:<PAGE>


                         (A)  any  lack  of validity  or  enforceability of
                    this Agreement or any of the other Loan Documents;

                         (B)  the  existence of any claim, set-off, defense
                    or other  right which the Account  Party, any Borrower,
                    the  Guarantors or ENSCO  Offshore II  may have  at any
                    time against a beneficiary named in a Letter of Credit,
                    any transferee of any  Letter of Credit (or any  Person
                    from  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 the  Account Party,  any Borrower,
                    the Guarantors or ENSCO Offshore II and the beneficiary
                    named in any such Letter of Credit);

                         (C)  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;

                         (D)  the  surrender or impairment  of any security
                    for the  performance or observance of any  of the terms
                    of any of the Loan Documents; or

                         (E)  the occurrence of any Event of Default.

               (i)  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 or  compliance by  the
          Administrative Agent 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
          Administrative  Agent or  such Bank's  participation therein,  or
          (ii) shall impose  on the  Administrative Agent 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 Administrative Agent
          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  Administrative Agent  or such  Bank hereunder
          (other  than  any increased  cost  or  reduction  in  the  amount
          received or receivable resulting from the imposition of or change
          in the  rate or basis  of taxes or  similar charges),  then, upon
          demand  to the  Account Party  of  such Letter  of Credit  by the
          Administrative Agent  on  behalf  of  such  affected  Bank,  such
          Account  Party shall pay to the Administrative Agent on behalf of
          such  affected  Bank such  additional amount  or amounts  as will<PAGE>


          compensate the Administrative  Agent or such  affected Bank,  for
          such  increased cost or reduction.   A certificate, together with
          all  supporting  documentation  concerning  such  loss,  rule  or
          regulation or any  change therein or  any interpretation  thereof
          forming the basis for such increased cost of reduction, submitted
          to   the  Account  Party  of   such  Letter  of   Credit  by  the
          Administrative Agent on behalf of such affected Bank, as the case
          may be, setting  forth the  basis for the  determination of  such
          additional  amount  or   amounts  necessary  to   compensate  the
          Administrative Agent or such affected Bank  as aforesaid shall be
          conclusive and binding  on the  Account Party of  such Letter  of
          Credit absent manifest error.  

               (j)  Indemnities.    The Account Parties, severally  and not
          jointly,   hereby   agree   to  reimburse   and   indemnify   the
          Administrative  Agent 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 Administrative Agent in performing its respective
          duties in any way relating  to or arising out of its  issuance of
          Letters  of  Credit at  the  request  of  such  Account  Parties;
          provided that the  Account Parties  shall not be  liable for  any
          portion  of  such  liabilities,  obligations,   losses,  damages,
          penalties,   actions,  judgments,   suits,  costs,   expenses  or
          disbursements  resulting from  the  Administrative Agent's  gross
          negligence  or   willful  misconduct.      To  the   extent   the
          Administrative Agent  is not indemnified by  the Account Parties,
          the Participants will reimburse  and indemnify the Administrative
          Agent  in proportion to their respective Facility A or Facility C
          Commitments,   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 Administrative Agent 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  Administrative  Agent's gross
          negligence or willful misconduct.

               (k) Interest on Guaranty Payments.  

                    (i)  Rate  of  Interest.    (i)  The  Account  Parties,
               severally and not jointly, agree to  pay interest in respect
               of  any Guaranty  Payment at  a rate per  annum which  is 2%
               higher than the Administrative  Agent's prime rate announced
               from time  to time in New  York, N.Y. plus the  Margin; (ii)
               interest on  any Guaranty Payment  shall be computed  on the
               basis of  a year of 360  days and the actual  number of days
               elapsed.

                    (ii) Payment of Interest.   Interest shall  be paid  by
               the Account Parties in respect of  any Guaranty Payment from<PAGE>


               the  date of such Guaranty  Payment up to  and including the
               date such amount is paid by the Account Party of such Letter
               of Credit."


     5.   Commitment Reduction  and  Loan Repayment.   Section  6.2 of  the

Credit Agreement is hereby amended to read as follows:

     "6.2 Commitment Reduction and Loan Repayment.  All amounts outstanding
     under this Agreement shall be repaid by the Borrowers as follows:

               (a)  Following  the effectiveness  of  Amendment No.  1, the
          Commitments  shall   be  permanently   reduced  by   eleven  (11)
          consecutive semi-annual reductions  on each Commitment  Reduction
          Date.   The first ten (10)  reductions shall be in  the amount of
          USD  7,000,000 each and the eleventh and final reduction shall be
          in the amount of USD 80,000,000.  The Borrowers may designate  to
          the Administrative Agent that such reduction shall be  applied to
          any or all of  the Facilities; provided, however, that if no such
          designation is made  by the Borrowers,  such reductions shall  be
          applied  pro rata to  the Facility A,  Facility B  and Facility C
          Commitments.    Such  reductions  in  the  Commitments  shall  be
          irrespective  of whether  any amounts  are outstanding  under any
          Facility  and irrespective of whether any repayment is due by the
          Borrowers under Section 6.2(b) below.

               (b)  If  the amount  outstanding under  any Facility  on any
          Commitment  Reduction Date is greater than the Banks' Facility A,
          Facility  B,  or  Facility  C  Commitments  on  such   Commitment
          Reduction  Date (after  taking into  account any  reduction under
          Section  6.2(a) above or  any transfer under  Section 4.6 above),
          the Borrowers  shall reduce  the  amount outstanding  under  such
          Facility by a payment of such excess on such Commitment Reduction
          Date together with any interest accrued on such amount.

               (c)  All amounts outstanding  under Facility  A, Facility  B
          and Facility C shall  be repaid by the Borrowers on  the Maturity
          Date."

     6.   Voluntary Prepayments.  The first paragraph of Section 6.3 of the

Credit Agreement is hereby amended to read as follows:

          "6.3 Voluntary Prepayments.   The Borrowers shall  have the right
          to prepay  all amounts outstanding  under Facility A,  Facility B
          and Facility C in whole or  in part, without premium or  penalty,
          from time to  time pursuant to this Section 6.3  on the following
          terms and conditions:"<PAGE>


     7.   Voluntary Reduction of Commitments.  Section 6.4(c) of the Credit

Agreement is hereby amended to read as follows:

          "6.4(c)   the  Borrowers may designate  that such reduction shall
          be applied  to any or all of the Facilities; provided that (i) if
          no such designation is made by the Borrowers of  the reduction to
          a  Facility or  Facilities, such  reduction shall be  applied pro
          rata to the Facility A, Facility B and Facility C Commitments and
          shall be  irrespective of  whether  any amounts  are  outstanding
          under  any Facility  and (ii)  if a  designation is  made by  the
          Borrowers,  such reduction shall  reduce each remaining reduction
          of the designated Facility or Facilities pro rata; and"

     8.   Changes in Circumstances.  Section 6.9(b) (iii)(B)  of the Credit

Agreement  is hereby amended by  changing the reference  in such subsection

from "Facilities A or B" to "Facilities A, B or C".

     9.   Security.  Section 7 of the Credit Agreement is hereby amended by

adding  the following new subsection  as subsection 7.6  and by renumbering

the existing subsection 7.6  as subsection 7.7 and the  existing subsection

7.7 as subsection 7.8:

     "7.6 ENSCO Offshore II Guaranty.  Facility C shall  be secured in
     accordance  with   the  provisions  of  the   ENSCO  Offshore  II
     Guaranty."

     10.  Additional  Conditions  Precedent.   Section  8.2  of the  Credit

Agreement is hereby amended to read as follows:

          "8.2   Additional Conditions Precedent to  Subsequent Advances or
          Letters of  Credit.   The obligation  of the  Banks to  make each
          subsequent Advance  or  of  the  Administrative  Agent  to  issue
          Letters  of  Credit shall  be  subject to  the  further condition
          precedent  that  the  Administrative Agent  shall  have  received
          certificates  (dated  the date  of such  Advance  or the  date of
          issuance of such Letter  of Credit) of officers of  the Borrowers
          certifying that:

               (a)  the representations and warranties contained in Section
          10 hereof are correct on and as of the date such Advance  is made
          or the date of issuance  of such Letter of Credit as  though made
          on and  as of such  date except  those contained in  Section 10.7
          below and those expressly made as of another date; and

               (b)  no  event  has occurred  and  is  continuing, or  would
          result  from such  Advance  or the  issuance  of such  Letter  of
          Credit, which constitutes an Event of Default or with the passing
          of time  or the  giving of  notice would  constitute an  Event of<PAGE>


          Default."

     11.  Insurance.    Section 11.2  of  the  Credit  Agreement is  hereby

amended  so that  the  first  sentence of  such  subsection  shall read  as

follows:

     "The Borrowers shall insure, or cause to be insured, the Rigs pursuant
     to the  terms of Article I,  Section 15 of the  U.S. Mortgage, Article
     II, Section 5 of the Bahamian Deed of Covenants and Article I, Section
     15 of the Liberian Mortgage."

     12.  Indebtedness.   (a) Section  12.5(a) of  the Credit  Agreement is

hereby amended to read as follows:

     "(a)  the Advances  and Guaranty  Payment obligations  for Letters  of
     Credit;"

     (b)  Section  12.5(c) of  the Credit  Agreement  is hereby  amended by
     changing the reference in  such subsection to "USD 5,000,000"  to "USD
     15,000,000."

     (c)  Section  12.5(e) of  the Credit  Agreement  is hereby  amended by
     changing the reference in  such subsection to "USD 5,000,000"  to "USD
     15,000,000."

     (d)  Section  12.5(f) of  the Credit  Agreement  is hereby  amended by
     changing  the reference in such  subsection to "USD  5,000,000" to USD
     20,000,000."

     (e)  Section 12.5 of the Credit Agreement is hereby further amended by
     adding the following new subsection (l) at the end of it:

     "(l) subordinated  indebtedness of Dual  Holding Company in  an amount
     not  to exceed  USD 100,000,000  issued pursuant  to the  Indenture of
     Trust dated January 15, 1994."

     13.  Events  of  Default.   Section 13.1  of  the Credit  Agreement is

hereby amended as follows:

     (a)  The  references  in Sections  13.1(c),  (e)  and  (f) to  "either
     Borrower  or either Guarantor" are  changed to "any  of the Borrowers,
     either Guarantor or ENSCO Offshore II."

     (b)  The term "ENSCO Offshore II Guaranty" is added to Section 13.1(c)
     after the term "ENSCO Guaranty."

     14.  Appointment  and  Duties of  Agents.  Section  15.2(c)(i) of  the

Credit Agreement is hereby amended to read as follows:

     "(i) act pursuant to the instructions of the Banks in all matters<PAGE>


     relating  to the terms  and interest  rate on  the Notes  and the
     Letters of Credit, all collateral for the Obligations, waivers or
     amendments of Sections 4.7(e), 12.5, 12.14, 13.1(a) and 14 hereof
     and Sections 8(i),  8(j), 8(k)  and 8(l) of  the ENSCO  Guaranty;
     and"

     15.  Notices.   Section 16.4 of the Credit Agreement is hereby amended

by adding the following additional information.

     (a)  under the heading "Borrowers":

               Dual Holding Company
               2700 Fountain Place
               1445 Ross Avenue 
               Dallas, Texas 75202
               Telefax No. 214-855-0300

               Attention: Chief Financial Officer

     (b)  under the heading "Banks":

               Banque Indosuez
               47, Rue de Monceau
               F 7500 Paris
               France
               Telefax No. 011 331 4420 1934
               Attention:  Francine Struxiano-Auffray

               with copies to:

               Banque Indosuez, Representative Office
               Ruselokkveien 6
               Oslo 0120
               Norway
               Telefax No. 011 472 283 3055
               Attention:  Bjorn Hurdevadt-Gulbrandsen

               MeesPierson N.V.
               Camomile Court
               23 Camomile Street
               London EC3A 7PP
               England
               Telefax No. 011 44 171 444 8810
               Attention:  Shipping Department

     16.  Agent for Borrowers.   There is hereby added a  new Section 16.18

to the Credit Agreement as follows:

          "16.18  Agent for Borrowers and ENSCO Offshore II.

               (a)   The Borrowers agree  that ENSCO Offshore  shall be the
          true and lawful  agent and attorney-in-fact of  the Borrowers and
          ENSCO Offshore II hereunder in connection with all of the rights,<PAGE>


          powers  and  duties  of  the  Borrowers  and  ENSCO  Offshore  II
          hereunder,   including,  without   limitation,   the  giving   or
          withholding and the receipt of consents and notices.

               (b)  The Agents and the Banks shall be entitled to and agree
          to  treat any  notice given  or action  taken by  ENSCO Offshore,
          acting in its capacity as agent, as a notice from or an action by
          the Borrowers or ENSCO Offshore II and that such notice or action
          shall be  on behalf of all of the Borrowers and ENSCO Offshore II
          unless it is specifically stated to be limited to one  or more of
          such companies."

     17.  Amendments  to Schedules.  (a) Schedule 1 to the Credit Agreement

is hereby amended and replaced by Schedule 1 to this Amendment No. 1. 

     (b)  Schedule 2 to the Credit Agreement is hereby amended and replaced

by Schedule 2 to this Amendment No. 1.

     (c)  Schedule 3 to the Credit Agreement is hereby amended and replaced

by Schedule 3 to this Amendment No. 1.

     18.  Conditions Precedent.

     18.1 Documents Required as  Conditions Precedent to  Amendment No.  1.

The effectiveness of the modifications to the Credit Agreement contemplated

by this Amendment  No. 1 are  subject to the  condition precedent that  the

Agents shall  have received  at or  prior to  the Closing  Date all  of the

following, each dated on  or before the Closing  Date and each in form  and

substance satisfactory to the Agents and their counsel:

          (a)  Executed counterparts of each of the New Loan Documents.

          (b)  Certified  copies  of  the  resolutions  of  the  Board   of

     Directors  of  the Borrowers  and  ENSCO Offshore  II  authorizing the

     execution and delivery by the  Borrowers and ENSCO Offshore II of  the

     New  Loan Documents  to  which they  are  parties, and  all  documents

     evidencing other necessary  corporate action with  respect to the  New

     Loan Documents.

          (c)  Certificates of the Secretaries or the Assistant Secretaries

     of the Borrowers  and ENSCO Offshore II certifying the  names and true<PAGE>


     signatures  of the  officers of  the Borrowers  and ENSCO  Offshore II

     authorized to sign the  New Loan Documents on behalf  of the Borrowers

     and ENSCO  Offshore II and the  other documents or certificates  to be

     executed  by  the Borrowers  and ENSCO  Offshore  II pursuant  to this

     Amendment No. 1;

          (d)  Copies certified as of  a recent date by the  Secretaries or

     the  Assistant Secretaries of the  Borrowers and ENSCO  Offshore II of

     their By-laws or comparable documents; 

          (e)  Copies   of   the  Borrowers'   and   ENSCO   Offshore  II's

     Certificates of Incorporation or comparable documents certified by the

     relevant  officials of  their jurisdiction  of incorporation  not more

     than thirty (30) days prior to the Closing Date and certificates dated

     as of a recent date by the relevant officials of their jurisdiction of

     incorporation as to the  continued existence and tax good  standing of

     the Borrowers.

          (f)  Opinions  of (i) Robert O.  Isaac, counsel to the Borrowers,

     the Guarantors and  ENSCO Offshore II and (ii) Gardere  Wynne Sewell &

     Riggs,  L.L.P., counsel  to  the Banks;  both  in form  and  substance

     satisfactory to the Agents.

          (g)  ENSCO Offshore II  shall have executed and delivered  to the

     Agents copies of all  documents and filings  and shall have taken  all

     actions necessary to record the Liberian Mortgage at the office of the

     Deputy Commissioner of Maritime Affairs of the Republic of Liberia and

     to perfect the  security interests  created by the  ENSCO Offshore  II

     Assignments as  first priority  perfected  security interests  on  the

     property covered thereby.

          (h)  All  orders,  consents, approvals,  licenses, authorizations

     and validations of, and filings, recordings and registrations with and<PAGE>


     exemptions  by any Governmental Agency  or any Person  (other than any

     routine  filings  which may  be required  after  the date  hereof with

     appropriate governmental authorities in connection with  the operation

     of the Rigs)  required to  (i) authorize the  execution, delivery  and

     performance  by the  Borrowers and ENSCO  Offshore II of  the New Loan

     Documents  to which they are parties, (ii) continue the perfection and

     priority  of the Mortgages and  the Assignments executed and delivered

     prior  to  the date  of this  Amendment No.  1,  or (iii)  prevent the

     execution,  delivery  and  performance  by  the  Borrowers  and  ENSCO

     Offshore  II of the New Loan Documents  to which they are parties from

     resulting in  a  breach of  any  of the  terms  or conditions  of,  or

     resulting  in the imposition of  any lien, charge  or encumbrance upon

     any  properties of the Borrowers and ENSCO Offshore II pursuant to, or

     constituting a  default (with due notice or lapse of time or both), if

     such breach,  imposition  or  default  would result  in  a  materially

     adverse  change in the financial  position of the  Borrowers and ENSCO

     Offshore II,  or resulting in an occurrence of any event for which any

     holder or holders of Indebtedness may declare the same due and payable

     under, any  indenture, agreement, order, judgment  or instrument under

     which the  Borrowers and ENSCO Offshore II are a party (other than the

     Mortgages or the Assignments) or to the Borrowers' knowledge after due

     inquiry by  which any of the  Borrowers or ENSCO Offshore  II or their

     property  may be  bound  or affected,  or  under the  Certificates  of

     Incorporation or By-laws of the Borrowers and ENSCO Offshore II, shall

     have been obtained or made.

          (i)  Evidence  of  the   insurance  on  the   Rigs  required   by

     Section 11.2  of  the  Credit  Agreement  and  evidence  of  insurance

     maintained by ENSCO Offshore II on its assets and a broker's report as<PAGE>


     to such insurance.

          (j)  Copies of any charters, leases  and/or management agreements

     relating to the employment or operation  of the ENSCO Offshore II Rigs

     certified  as true, correct and complete by the Secretary or Assistant

     Secretary of ENSCO Offshore II.

          (k)  Confirmation of class certificates for the ENSCO Offshore II

     Rigs from the American  Bureau of Shipping showing the  ENSCO Offshore

     II Rigs to  be classified as Maltese Cross A1 elevating drilling units

     with no outstanding recommendations affecting class.

          (l)  Copies of valuations  dated no  more than  thirty (30)  days

     prior  to  the Closing  Date of  the fair  market  value of  the ENSCO

     Offshore II Rigs  without charter or other  contractual commitments by

     an  independent drilling  rig  broker  or  appraiser selected  by  the

     Borrowers but acceptable to the Agents.

          (m)  Evidence of  the  payment  of  the  facility  amendment  fee

     referred to in Section 20 below.

     18.2 Waiver of Conditions Precedent.  All of  the conditions precedent

contained in this  Section 18 are for the sole benefit of the Banks and the

Agents  may waive  any of them  in their  absolute discretion,  and on such

conditions as they may deem proper.

     19.  Representations and  Warranties of the Borrowers.   The Borrowers

represent and warrant to the Banks as follows:

     19.1 Due Incorporation Qualification,  Etc.  Each  Borrower and  ENSCO

Offshore  II is duly organized, validly existing and in good standing under

the  laws  of its  jurisdiction  and each  is  duly qualified  and  in good

standing as  a foreign corporation  to do business in  the jurisdictions in

which the failure  to be so qualified would have  a material adverse effect

on its  business or financial condition  and each has full  corporate power<PAGE>


and authority to own its properties and assets and to  conduct its business

as presently conducted.

     19.2 Capacity.  Each Borrower and ENSCO Offshore II has full corporate

power and authority to execute and deliver, and to perform  and observe the

provisions of  the New Loan Documents to  which it is a  party and to carry

out the transactions contemplated hereby and thereby.

     19.3 Authority  and  Enforceability.    The  execution,  delivery  and

performance  by  the  Borrowers  and  ENSCO Offshore  II  of  the  New Loan

Documents to which they are parties have been or will be duly authorized by

all  necessary corporate action.   This Amendment No. 1  (including the New

York choice of law) constitutes and the other New Loan Documents constitute

legal, valid and binding obligations of the Borrowers and ENSCO Offshore II

party  to  such  documents  enforceable  against  the  Borrowers  and ENSCO

Offshore  II in  accordance with  their respective  terms, subject  to laws

affecting creditors' rights generally and to applicable equity  principles.

The Liberian  Mortgage and the ENSCO  Offshore II Assignments  shall on the

Closing Date  create  and constitute  valid  and perfected  first  priority

security interests in and to the properties covered thereby, subject to the

exceptions  contained  therein,  enforceable  against  all  third  parties,

subject to  laws affecting  creditors' rights generally  and to  applicable

equity principles and shall secure only the Facility C Commitments.

     19.4 Governmental Approvals.   No  order, consent,  approval, license,

authorization, or validation of, or  filing, recording or registration with

(other than any routine filings which may be required after the date hereof

with appropriate governmental authorities in connection with the  operation

of the Rigs or required  in connection with the perfection of  the security

interests created by  any of the New Loan Documents),  or exemption by, any

Governmental Agency, is required  to authorize the execution,  delivery and<PAGE>


performance  by  the  Borrowers  and ENSCO  Offshore  II  of  the  New Loan

Documents to which they are parties.

     19.5 Compliance with Other Instruments.  The execution and delivery of

this Amendment  No. 1 and compliance  with its terms and  the execution and

delivery of the other New  Loan Documents to which the Borrowers  and ENSCO

Offshore II are parties and the compliance with their terms as contemplated

herein, will not  result in a breach of any of  the terms or conditions of,

or  result in  the imposition  of any  lien, charge or  encumbrance (except

those contemplated by  this Amendment  No. 1)  upon any  properties of  the

Borrowers and ENSCO Offshore II pursuant to, or constitute a default  (with

due notice  or lapse of  time or both), or  result in an  occurrence of any

event for which any holder or  holders of Indebtedness may declare the same

due  and  payable  under  any  indenture,  agreement,  order,  judgment  or

instrument under which  the Borrowers and ENSCO Offshore II  are parties or

to the Borrowers' knowledge, after due inquiry, by which  the Borrowers and

ENSCO Offshore II or their property may be bound or  affected, or under the

Certificates of Incorporation or By-laws  (or comparable documents) of  the

Borrowers and ENSCO Offshore II and, to the Borrowers' knowledge, after due

inquiry will not violate any provision of applicable law.

     19.6 Litigation,  Etc.  Except  as heretofore disclosed  in ENSCO's or

Dual  Holding Company's 10Q filings  with the U.S.  Securities and Exchange

Commission for  the period  ending March  31, 1996,  there are no  actions,

suits  or proceedings  pending,  or  to  the  knowledge  of  the  Borrowers

threatened,  against or affecting ENSCO, ENSCO Offshore II or the Borrowers

at law or in equity, which, if adversely determined, would  have a material

adverse  effect  on ENSCO,  ENSCO Offshore  II or  the  Borrowers.   To the

Borrowers'  knowledge, as  of the  date of  this  Amendment No.  1, neither

ENSCO,  ENSCO Offshore II nor any Borrower  is in violation or default with<PAGE>


respect to  any applicable  laws  and/or regulations  which  non-compliance

would give rise to a  material adverse effect nor is ENSCO,  ENSCO Offshore

II or any Borrower in violation or default with respect to any order, writ,

injunction, demand or decree of any court  or any Person or in violation or

default  (nor is there any waiver in  effect which, if not in effect, would

result  in a  violation  or  default) in  any  material  respect under  any

indenture, agreement or  other instrument under which ENSCO, ENSCO Offshore

II or any  Borrower is a party  or may be bound, default  under which would

have a material adverse effect.

     19.7 Principal  Place  of Business.   The  chief executive  office and

principal place of business  of ENSCO, ENSCO Offshore and ENSCO Offshore II

and the principal place of business  of ENSCO U.K. in the United  States is

located at 2700 Fountain Place, 1445 Ross Avenue, Dallas, Texas, 75202.

     19.8 Patent  and Other  Rights.   ENSCO,  ENSCO  Offshore II  and  the

Borrowers  have the right to  use all patents,  licenses, trademarks, trade

names, trade secrets, copyrights and all rights with respect thereto, which

are  required  to conduct  their business  as  now conducted  without known

conflict with the  rights of  others which would  materially and  adversely

affect such business.

     19.9 Taxes.  The Borrowers and ENSCO Offshore  II have timely filed or

caused to be timely filed all tax returns which are required to be filed by

them,  pursuant to  the laws,  regulations or  orders of  each  Person with

taxing power over the Borrowers and ENSCO Offshore II or their assets.  The

Borrowers  and ENSCO  Offshore  II have  paid,  or made  provision  for the

payment of,  all Taxes,  assessments, fees  and other governmental  charges

shown to be due  on said returns or pursuant to  any assessment received by

the Borrowers  and ENSCO  Offshore II,  except such taxes,  if any,  as are

being contested in good faith and as to which adequate reserves (determined<PAGE>


in  accordance with  GAAP) have  been provided.  The charges,  accruals and

reserves  in  respect of  taxes on  the books  of  the Borrowers  and ENSCO

Offshore II are adequate (determined in  accordance with GAAP).  Other than

is disclosed in ENSCO's or Dual Holding Company's 10Q filings with the U.S.

Securities  and Exchange  Commission for  the period  ended March  31, 1996

there are no  proposed tax assessments which would have  a material adverse

effect on  any of the Borrowers and  ENSCO Offshore II and  no extension of

time for the assessment of  federal, state or local taxes of  the Borrowers

and  ENSCO  Offshore   II  is  in  effect   or  has  been  requested.   The

representations  and  warranties contained  in  this Section  19.9  are, in

respect of  Dual Holding  Company and  ENSCO Offshore  II only, limited  to

those filings  and  those payments  the failure  to complete  would have  a

material adverse effect.

     19.10     Compliance with Federal Reserve Board Regulations.  No  part

of the proceeds of the Loan or  any Letter of Credit will be used, directly

or  indirectly,  for  the purpose  of  purchasing  or  carrying any  margin

security within  the meaning of Regulation  U of the Board  of Governors of

the Federal Reserve System, or for the purpose of purchasing or carrying or

trading  in any  securities  under such  circumstances  as to  involve  the

Borrowers  or ENSCO  Offshore II  in a  violation of  Regulation X  of said

Board, or the Agents  or the Banks in a  violation of Regulation U  of said

Board.  In particular,  without limitation of the foregoing,  the Borrowers

will not use any  part of the proceeds of the Loan made or to be made under

the Credit Agreement or any Letter of Credit to be issued under  the Credit

Agreement to acquire  for themselves or for any other  person any publicly-

held securities of  any kind.  The  assets of the Borrowers  do not include

any margin  securities, and  the Borrowers  and ENSCO Offshore  II have  no

present intention  of acquiring  any margin  securities.   As used  in this<PAGE>


Section,  the  terms  "margin  security"  and  "purpose  of  purchasing  or

carrying"  shall  have  the meanings  assigned  to  them  in the  aforesaid

Regulation U, and the term "publicly-held," in respect of securities, shall

have the meaning assigned to it in Section 220.7(a) of Regulation T of said

Board.   If  requested  by the  Administrative  Agent, the  Borrowers  will

furnish  to the  Administrative Agent  a statement  in conformity  with the

requirements of Federal Reserve Form U-1 referred to in said Regulation U.

     19.11     Employee  Retirement  Income  Security  Act  of  1974.    No

Reportable Event has occurred and is continuing with respect to the Plan of

any  Borrower (other than Dual Holding Company)  and ENSCO Offshore II.  In

respect of Dual  Holding Company,  no Reportable Event  has occurred  which

would have a material adverse effect.

     19.12     Investment  Company Act  of 1940.   The Borrowers  and ENSCO

Offshore  II are  not  "investment companies"  within  the meaning  of  the

Investment Company Act of 1940.

     19.13     Subsidiaries.   As of the  date of this  Amendment No. 1 the

Borrowers have  no  subsidiaries other  than the  Subsidiaries except  that

ENSCO  U.K.  is a  wholly  owned subsidiary  of  ENSCO  Offshore and  ENSCO

Offshore II is a wholly-owned subsidiary of Dual Holding Company.

     19.14     Environmental Compliance.

          (a)  The Borrowers and ENSCO Offshore II have duly complied with,

     and  the Rigs and all of their  other properties and operations are in

     compliance  in  all material  respects  with,  the provisions  of  all

     applicable environmental, health and safety laws, codes and ordinances

     and  all  rules   and  regulations  promulgated   thereunder  of   all

     Governmental Agencies,  unless such compliance would  violate the laws

     or regulations of the jurisdiction in which the Rigs are operating.

          (b)  As of the date of this  Amendment No. 1, except as disclosed<PAGE>


     to  the Agents in  writing, the Borrowers  and ENSCO  Offshore II have

     received   no  notice  from  any  Governmental  Agency,  and  have  no

     knowledge,  of  any  fact(s)  which  constitute  a  violation  of  any

     applicable environmental, health or safety laws, codes or  ordinances,

     and   any  rules   or  regulations   promulgated  thereunder   of  all

     Governmental Agencies, which  relate to  the use or  ownership of  the

     Rigs or  other properties owned or operated  by the Borrowers or ENSCO

     Offshore II.

          (c)  The  Borrowers and  ENSCO Offshore  II have been  issued all

     required  applicable permits, licenses,  certificates and approvals of

     all  Governmental  Agencies  relating  to  (i)  air  emissions,   (ii)

     discharges to  surface water or  ground water, (iii)  noise emissions,

     (iv) solid or liquid waste disposal, (v) the use, generation, storage,

     transportation,   treatment,  recycling   or  disposal   of  Hazardous

     Substances  or  (vi) other  environmental,  health  or safety  matters

     necessary  for the  ownership  or  operation  of  the  Rigs  or  other

     properties  owned or operated by  the Borrowers and  ENSCO Offshore II

     and  such permits,  licenses, certificates  and approvals are  in full

     force and effect on the date of this Amendment No. 1.

          (d)  Except as disclosed to the Agents in writing, to the best of

     the  Borrowers'  knowledge,   except  in  accordance   with  a   valid

     governmental permit, license, certificate or approval, there has  been

     no  spill  or  unauthorized  discharge or  release  of  any  Hazardous

     Substance to  the  environment  at,  from,  or  as  a  result  of  any

     operations on the  Rigs or  other properties and  operations owned  or

     operated  by  the  Borrowers and  ENSCO  Offshore  II  required to  be

     reported to any Governmental Agency.

          (e)  Except as disclosed to the Agents in writing, there has been<PAGE>


     no material  complaint, compliance order, compliance  schedule, notice

     letter, notice of citation or other similar notice from any applicable

     environmental agency  which concerns  the operations  of the  Rigs and

     operations owned or operated by the Borrowers and ENSCO Offshore II.

          (f)  All of  the  representations  and  warranties  contained  in

     Section 19.14 (a)  - (e) above are, as to  Dual Holding Company, ENSCO

     Offshore II,  the ENSCO Offshore II Rigs  and the other properties and

     operations of Dual Holding  Company and ENSCO Offshore II,  limited to

     those matters which would have a material adverse effect.

     20.  Fees and Expenses.

          (a)  Amendment Fee.  The Borrowers jointly and severally agree to

     pay the Agents a facility  amendment fee payable pursuant to a  letter

     agreement dated the date of this Amendment No. 1.

          (b)  Letter of Credit Fees.  (i) The Account Parties agree to pay

     the  Administrative Agent, for distribution to the Banks which are not

     in default of  their obligations  under Section 4.7(h)  of the  Credit

     Agreement, a Letter of Credit  Fee of 1% per annum on  the outstanding

     amount of  Letters of Credit issued  at their request, such  fee to be

     payable in arrears  on the quarterly anniversaries of the date of this

     Amendment No. 1.

               (ii) The Account Parties agree to pay to the  Administrative

               Agent  a facing  fee of  .25% per  annum on  the outstanding

               amount of  Letters of Credit  issued at their  request, such

               fee to be payable in arrears on the  quarterly anniversaries

               of the date of this Amendment No. 1.

          (c)  Expenses.   The Borrowers  jointly  and severally  agree  to

     promptly,  whether or  not the  modifications to the  Credit Agreement

     contemplated by this Amendment  No. 1 become effective,  (x) reimburse<PAGE>


     the Administrative Agent,  upon demand,  for all  reasonable fees  and

     disbursements  of the Agents including, but not limited to, travel and

     other out-of-pocket expenses of the Agents and the reasonable fees and

     expenses of external counsel to the Agents incurred in connection with

     (i)  the preparation, execution and delivery of the New Loan Documents

     and the making of Advances and the issuance of Letters of Credit under

     the  Credit Agreement, and any amendments or waivers to or termination

     of  such documents, (ii) the  recording, filing and  perfection of all

     security interests created  by the  New Loan Documents  and (iii)  the

     confirmation of any Letters of Credit by local banks requested by Dual

     Holding Company or by any beneficiary of any Letter of Credit; and (y)

     the protection of the rights of  the Agents, the Banks and the Trustee

     under  the  New Loan  Documents,  whether by  judicial  proceedings or

     otherwise.   The obligations of the Borrowers under this Section 10(c)

     shall survive payment of the Loan.

     21.  Wherever and  in  each  such place  the  terms  "Credit  Facility

Agreement", "Credit Agreement" or "this Agreement" are  used throughout the

Credit Agreement, such terms shall be  read to mean the Credit Agreement as

amended by this Amendment No. 1.

     22.  Except  as specifically amended by  this Amendment No.  1, all of

the terms and provisions of the Credit Agreement shall remain in full force

and effect.

     23.  All capitalized  terms used herein  but not defined  herein shall

have the meanings given to them in the Credit Agreement.

     24.  THIS  AMENDMENT  NO. 1  TO  CREDIT  FACILITY  AGREEMENT SHALL  BE

GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE

OF NEW YORK.<PAGE>


     IN  WITNESS  WHEREOF,  the  parties  hereto have  duly  executed  this

Amendment No. 1 on the date first written above.

                                   ENSCO OFFSHORE COMPANY

                                   By:   /s/ ROBERT O. ISAAC
                                         ---------------------------------
                                   Name:     Robert O. Isaac
                                   Title:    Assistant Secretary


                                   ENSCO OFFSHORE U.K. LIMITED

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


                                   DUAL HOLDING COMPANY

                                   By:   /s/ ROBERT O. ISAAC
                                         ---------------------------------
                                   Name:     Robert O. Isaac
                                   Title:    Assistant Secretary



                                   CHRISTIANIA BANK OG KREDITKASSE, 
                                     New York Branch, as Agent

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

                                   By:   /s/ HANS CHR. KJELSRUD
                                         ---------------------------------
                                   Name:     Hans Chr. Kjelsrud
                                   Title:    Vice President<PAGE>


                                   DEN NORSKE BANK ASA, New York Branch, 
                                     as Agent

                                   By:   /s/ THEODORE S. JADICK, JR.
                                         ---------------------------------
                                   Name:     Theodore S. Jadick, Jr.
                                   Title:    Senior Vice President

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


                                   CHRISTIANIA BANK OG KREDITKASSE, 
                                     New York Branch

                                   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

                                   By:   /s/ THEODORE S. JADICK, JR.
                                         ---------------------------------
                                   Name:     Theodore S. Jadick, Jr.
                                   Title:    Senior Vice President

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


                                   MEESPIERSON N.V.

                                   By:   /s/ DAVID JUNGMAN
                                         ---------------------------------
                                   Name:     David Jungman
                                   Title:    Attorney-in-Fact<PAGE>


                                   BANQUE INDOSUEZ

                                   By:   /s/ DAVID JUNGMAN
                                         ---------------------------------
                                   Name:     David Jungman
                                   Title:    Attorney-in-Fact


Agreed and accepted this 13th 
day of June 1996.

ENSCO INTERNATIONAL INCORPORATED

By:       /s/  ROBERT O. ISAAC
     ----------------------------
     Name:     Robert O. Isaac
     Title:    Assistant Secretary

ENSCO DELAWARE, INC.

By:       /s/  ROBERT O. ISAAC
     ----------------------------
     Name:     Robert O. Isaac
     Title:    Assistant Secretary

ENSCO OFFSHORE COMPANY II

By:       /s/  ROBERT O. ISAAC
     ----------------------------
     Name:     Robert O. Isaac
     Title:    Assistant Secretary<PAGE>



                       List of Schedules and Exhibits


Schedule 1     -    Bank Commitments

Schedule 2     -    List of Rigs

Schedule 3     -    List of Unencumbered Rigs

Exhibit A-1    -    Form of Endorsement No. 1 to Facility A Note

Exhibit A-2    -    Form of Endorsement No. 1 to Facility B Note

Exhibit B      -    Form of Facility C Note

Exhibit C      -    Form of Request for Letter of Credit

Exhibit D      -    Form of Amendment No. 1 to ENSCO Guaranty

Exhibit E      -    Form of ENSCO Offshore II Guaranty<PAGE>


<TABLE>
<CAPTION>

                                            SCHEDULE 1 TO AMENDMENT NO. 1 TO AMENDED
                                             AND RESTATED CREDIT FACILITY AGREEMENT


                                                          COMMITMENTS



                                                                          
 BANK                        FACILITY A            FACILITY B             FACILITY C             TOTAL COMMITMENT
 --------------------        --------------        --------------         --------------         ----------------
 <S>                         <C>                   <C>                    <C>                    <C>
 Christiania Bank og                                                      
 Kreditkasse,                                                             
 New York Branch             $20,192,307.67        $20,192,307.67         $20,192,307.67         $ 60,576,923.01  

 Den norske Bank ASA,                                                     
 New York Branch             $20,192,307.67        $20,192,307.67         $20,192,307.67         $ 60,576,923.01  

 Banque Indosuez             $ 5,769,230.66        $ 5,769,230.66         $ 5,769,230.66         $ 17,307,691.98  
 MeesPierson N.V.            $ 3,846,154.00        $ 3,846,154.00         $ 3,846,154.00         $ 11,538,462.00  

 Total                       $50,000,000.00        $50,000,000.00         $50,000,000.00         $150,000,000.00  

/TABLE
<PAGE>


<TABLE>
<CAPTION>
                        SCHEDULE 2 TO AMENDMENT NO. 1 TO AMENDED AND RESTATED CREDIT FACILITY AGREEMENT

                                                            R I G S


NAME                      OWNER                             FLAG                     HOME PORT                 OFFICIAL NO.
- -----------------         ----------------------            -------                  -----------               ------------
<S>                       <C>                               <C>                      <C>                       <C>

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
(f/k/a ENSCO 63)

ENSCO 99                  ENSCO Offshore Company            U.S.                     New Orleans               682070

ENSCO 80                  ENSCO Offshore U.K. Ltd.          Bahamas                  Nassau                    724944

ENSCO 85                  ENSCO Offshore U.K. Ltd.          Bahamas                  Nassau                    724945

ENSCO 92                  ENSCO Offshore U.K. Ltd.          Bahamas                  Nassau                    724946

ENSCO 50                  ENSCO Offshore Company II         Liberia                  Monrovia                  9383
(f/k/a DUAL 38)

ENSCO 51                  ENSCO Offshore Company II         Liberia                  Monrovia                  9384
(f/k/a DUAL 41)

ENSCO 53                  ENSCO Offshore Company II         Liberia                  Monrovia                  10260
(f/k/a DUAL 88)

ENSCO 54                  ENSCO Offshore Company II         Liberia                  Monrovia                  10159
(f/k/a DUAL 89)

/TABLE
<PAGE>


<TABLE>
<CAPTION>
                        SCHEDULE 3 TO AMENDMENT NO. 1 TO AMENDED AND RESTATED CREDIT FACILITY AGREEMENT


NAME                      OWNER                             FLAG             HOME PORT                         OFFICIAL NO.
- -----------------         ----------------------            -------          -----------                       ------------
<S>                       <C>                               <C>              <C>                               <C>

ENSCO 52                  ENSCO Offshore Company II         Liberian         Monrovia, Liberia                 9385
(f/k/a Dual 42)

ENSCO 55                  ENSCO Offshore Company II         Liberian         Monrovia, Liberia                 8911
(f/k/a Dual 91)

ENSCO 60                  ENSCO Offshore Company II         Liberian         Monrovia, Liberia                 8697
(f/k/a Dual 87)

ENSCO 64 (to later be     ENSCO Offshore Company            U.S.             New Orleans                       553088
(renamed ENSCO 91) 

ENSCO 69                  ENSCO Offshore Company            U.S.             New Orleans                       574669

ENSCO 70                  ENSCO Offshore Company            Bahamas          Nassau, Bahamas                   725305

ENSCO 71                  ENSCO Offshore Company            Bahamas          Nassau, Bahamas                   725304

ENSCO 72                  ENSCO Offshore Company            Bahamas          Nassau, Bahamas                   704622

ENSCO 96                  ENSCO Offshore Company II         Liberian         Monrovia, Liberia                 9400
(f/k/a Dual 96)

ENSCO 97                  ENSCO Offshore Company II         Liberian         Monrovia, Liberia                 8910
(f/k/a Dual 86)

ENSCO 67                  ENSCO Offshore Company            U.S.             New Orleans                       574310<PAGE>


<CAPTION>
                                                      ENSCO PLATFORM RIGS
                                                      -------------------

NAME                      OWNER                             FLAG             HOME PORT                         OFFICIAL NO.
- -----------------         ----------------------            -------          -----------                       ------------
<S>                       <C>                               <C>              <C>                               <C>

ENSCO 21                  ENSCO Platform AS                 N/A              N/A                               N/A
(f/k/a Dual 46)

ENSCO 22                  ENSCO Platform AS                 N/A              N/A                               N/A
(f/k/a Dual 47) 

ENSCO 23                  ENSCO Platform Company            N/A              N/A                               N/A
(f/k/a Dual 23)

ENSCO 24                  ENSCO Platform Company            N/A              N/A                               N/A
(f/k/a Dual 24) 

ENSCO 25                  ENSCO Platform AS                 N/A              N/A                               N/A
(f/k/a Dual 25)

ENSCO 26                  ENSCO Platform AS                 N/A              N/A                               N/A
(f/k/a Dual 39) 

ENSCO 27                  ENSCO Platform AS                 N/A              N/A                               N/A
(f/k/a Dual 44)

ENSCO 28                  ENSCO Platform AS                 N/A              N/A                               N/A
(f/k/a Dual 45) 

ENSCO 29                  ENSCO Platform AS                 N/A              N/A                               N/A
(f/k/a Dual 29)

/TABLE
<PAGE>


                                        EXHIBIT A-1 TO AMENDMENT NO. 1 TO
                                                CREDIT FACILITY AGREEMENT


                             ENDORSEMENT NO. 1


     Endorsement No. 1 dated June _____, 1996 to the Facility A Amended and

Restated  Promissory  Note dated  September 27,  1995  (the "Note")  in the

principal  amount of USD 80,000,000  from ENSCO OFFSHORE  COMPANY and ENSCO

OFFSHORE U.K. LIMITED  (the "Borrowers")  in favor of  CHRISTIANIA BANK  OG

KREDITKASSE,  New  York  Branch,  as  Administrative  Agent  for  the Banks

referred to in the Amended and Restated Credit Facility  Agreement dated as

of September 27, 1995 (the "Credit Agreement").  

     The Note is hereby amended, effective the date hereof, as follows:



1.   The principal amount of  the Note is hereby changed  to USD 50,000,000

wherever it appears; provided, however, that such  amount is subject to the

transfer provisions of Section 4.6 of the Credit Agreement.

     2.   Section 2.2 of the Note is hereby amended to read as follows:

     "2.2 This Note evidences  the Facility  A Advances made  by the  Banks

     under  Section 2  of the  Credit Agreement and  the obligation  of the

     Borrowers  to  reimburse the  Administrative  Agent  for any  Guaranty

     Payment and any interest thereon." 

     3.   Wherever and in each place the term "Credit Agreement" is used in

the Note, such term shall be read  to mean the Credit Agreement as  amended

by Amendment No. 1 to Credit Facility Agreement dated as of June 13, 1996. 

     4.   Wherever and in each place  the term "Note" is used in  the Note,

it shall be read to mean the Note as amended by this Endorsement No. 1.<PAGE>


     IN WITNESS WHEREOF, the parties hereto  have executed this Endorsement

No. 1 the day and year first above written.

                              ENSCO OFFSHORE COMPANY



                              By:__________________________________
                                   Name:     Robert O. Isaac
                                   Title:    Assistant Secretary


                              ENSCO OFFSHORE U.K. LIMITED

                              By:__________________________________
                                   Name:     Robert O. Isaac
                                   Title:    Secretary


                              CHRISTIANIA BANK OG KREDITKASSE, 
                               New York Branch, as 
                               Administrative Agent

                              By: _________________________________
                                   Name: __________________________
                                   Title: _________________________

                              By: _________________________________
                                   Name: __________________________
                                   Title: _________________________<PAGE>
 


                                        EXHIBIT A-2 TO AMENDMENT NO. 1 TO
                                                          CREDIT FACILITY

                             ENDORSEMENT NO. 1


     Endorsement No. 1 dated June _____, 1996 to the Facility B Amended and

Restated Promissory Note dated  September 27, 1995 in the  principal amount

of  USD 50,000,000  (the  "Note") from  ENSCO  Offshore U.K.  Limited  (the

"Borrower") in favor of  Christiania Bank og Kreditkasse, New  York Branch,

as  Administrative Agent  for the  Banks  referred to  in  the Amended  and

Restated  Credit Facility  Agreement dated  as of  September 27,  1995 (the

"Credit Agreement").

     The Note is hereby amended, effective the date hereof, as follows:

     1.   Wherever and in each place the term "Credit Agreement" is used in

the Note, such term  shall be read to mean the  Credit Agreement as amended

by Amendment No. 1 to Credit Facility Agreement dated as of June 13, 1996.

     IN WITNESS WHEREOF, the parties hereto have executed  this Endorsement

No. 1 the day and year first above written.

                              ENSCO OFFSHORE U.K. LIMITED


                              By:____________________________
                                   Name:     Robert O. Isaac
                                   Title:    Secretary

                         
                              CHRISTIANIA BANK OG KREDITKASSE,
                                   New York Branch, as
                                   Administrative Agent

                              By:____________________________
                                   Name:_____________________
                                   Title:____________________

                              By:____________________________
                                   Name:_____________________
                                   Title:____________________<PAGE>



                                        EXHIBIT B TO AMENDMENT NO. 1 TO
                                              CREDIT FACILITY AGREEMENT


                            DUAL HOLDING COMPANY

                         FACILITY C PROMISSORY NOTE


USD 50,000,000                                                June 13, 1996

FOR VALUE RECEIVED,  DUAL HOLDING COMPANY (the "Borrower")  hereby promises

to   pay  to  CHRISTIANIA  BANK   OG  KREDITKASSE,  New   York  Branch,  as

Administrative Agent for the Banks (the "Banks") referred to in the Amended

and  Restated Credit Facility Agreement dated  as of September 27, 1995, as

amended,   restated  or  supplemented  from  time   to  time  (the  "Credit

Agreement")  among the Borrowers, the Banks and  the Agents or order, on or

before October  18,  2001, or  otherwise,  as hereinafter  provided,  FIFTY

MILLION DOLLARS  OF THE  UNITED STATES OF  AMERICA (USD 50,000,000),  or so

much thereof as  may be advanced  and outstanding under  Facility C of  the

Credit  Agreement,  and  to pay  interest  on the  unpaid  portion  of said

principal sum outstanding from time to time, as hereinafter provided.

                           PRINCIPAL AND INTEREST

1.1  (a)  Interest on this Note shall be payable at the times and the rates

as provided in Section 5.1 of the Credit Agreement.

     (b)  In case  any payment of  principal or interest  is not  paid when

due, additional  interest at the rate determined as provided in Section 5.3

of the Credit  Agreement shall be payable on all  overdue principal and, to

the extent that the same may be lawful, on all overdue interest.

1.2  Interest shall be  calculated as provided in Section 5.1 of the Credit

Agreement.

1.3  The  Facility  C  Commitments  shall  be  reduced  in  installments as

provided in Section 6.2(a) of the Credit Agreement or otherwise as provided<PAGE>


in Sections 6.4 and 6.5 of  the Credit Agreement.  All payments under  this

Note shall be made to  the Administrative Agent as provided in  Section 6.6

of the Credit Agreement.

                                  SECURITY

2.1  This Note  is one of the promissory notes issued under and pursuant to

the Credit Agreement and is secured  by, among other things, (i) a Guaranty

of ENSCO  Offshore Company II, a  subsidiary of the Borrower,  which is, in

turn  secured  by, among  other things,  a  Liberian First  Preferred Fleet

Mortgage on four  Liberian flag drilling rigs dated the  date of this Note,

and  (ii)  a Guaranty  of  ENSCO  Offshore  Company, an  affiliate  of  the

Borrower, which is, in turn,  secured by, among other things, a  U.S. First

Preferred  Fleet Mortgage on Fifteen U.S. flag drilling rigs dated December

17, 1993, as amended, both in favor of Bankers Trust Company as Trustee for

the Banks (the "Mortgages").  Reference is hereby made to the Mortgages for

a  description of the property thereby  mortgaged, the nature and extent of

the security  afforded thereby and the  rights of the  Borrower, the Banks,

the Agents and the Trustee with respect to such security as provided in the

Mortgages.   Payment of this Note may  be demanded prior to the maturity of

this  Note under certain circumstances  and conditions, in  the manner, and

with the effect, provided in the Mortgages or the Credit Agreement.  A true

and complete copy of  the form of the  Credit Agreement is attached  to the

Mortgages and made a part thereof.

2.2  This  Note evidences the Facility  C Advances made  by the Banks under

Section 3A  of the Credit Agreement  and the obligation of  the Borrower to

reimburse  the  Administrative  Agent  for  any  Guaranty Payment  and  any

interest thereon.<PAGE>


2.3  The  principal  amount  of  this  Note  is  subject  to  the  transfer

provisions of Section 4.6 of the Credit Agreement.

                               MISCELLANEOUS

3.1  All  parties   hereto,  including  endorsers   hereof,  hereby   waive

presentment for payment,  demand, protest  and notice of  protest and  non-

payment hereof  and hereby  consent that  any and  all securities  or other

property, if any, held by or for the holders hereof at any time as security

for this Note may be  exchanged, released or surrendered and that  the time

of  payment of this Note may be extended, all in the sole discretion of the

holders hereof and  without notice and without affecting  in any manner the

liability of the parties hereto.

3.2  No course of dealing between the Borrower and the Agents, the Banks or

the Trustee in exercising any rights hereunder shall operate as a waiver of

any right of any holders  except to the extent expressly waived  in writing

by such holder.

3.3  Whenever any payment to be made hereunder shall be due  on a day which

is not  a Business Day,  such payments shall be  made on the  next Business

Day; provided, however,  that if such next succeeding Business  Day is in a

new month,  then the  payment required under  the Credit Agreement  or this

Note shall be made on the first Business Day preceding the original date on

which payment was due.

3.4  Any  notice  to be  given  pursuant to  this  Note shall  be  given in

accordance with Section 16.4 of the Credit Agreement.

3.5  THIS  NOTE SHALL BE GOVERNED  BY AND CONSTRUED  IN ACCORDANCE WITH THE

INTERNAL  LAWS OF THE  STATE OF  NEW YORK EXCEPT  THAT WITH RESPECT  TO THE

PROVISIONS  OF THIS  NOTE WHICH  PROVIDE FOR  OR RELATE  TO THE  PAYMENT OF

INTEREST, ANY PROVISIONS OF  APPLICABLE FEDERAL LAW WHICH PERMIT  THE BANKS

TO CHARGE THE HIGHER OF THE RATE PERMITTED BY SUCH APPLICABLE LAW OR BY THE<PAGE>


LAWS OF THE  STATE IN WHICH THE BANKS ARE LOCATED SHALL BE DEEMED GOVERNING

AND CONTROLLING.

3.6  THE BORROWER HEREBY WAIVES TRIAL BY JURY IN ANY JUDICIAL PROCEEDING TO

WHICH IT IS A PARTY INVOLVING, DIRECTLY OR INDIRECTLY,  ANY MATTER (WHETHER

SOUNDING IN TORT, CONTRACT OR OTHERWISE) IN ANY WAY ARISING OUT OF, RELATED

TO, OR CONNECTED WITH THIS NOTE OR ANY OF THE LOAN DOCUMENTS.

3.7  Capitalized terms used in this Note but not defined herein  shall have

the meanings given to them in the Credit Agreement.

     IN  WITNESS  WHEREOF, the  Borrower has  caused this  Note to  be duly

executed the day and year first above written.

                              DUAL HOLDING COMPANY


                              By:    /s/     ROBERT O. ISAAC
                                   ------------------------------
                                   Name:     Robert O. Isaac
                                   Title:    Assistant Secretary
                         <PAGE>


                                        EXHIBIT C TO AMENDMENT NO. 1 TO
                                              CREDIT FACILITY AGREEMENT

                         __________________, 199__


CHRISTIANIA BANK OG
  KREDITKASSE, New York Branch,
  as Administrative Agent
11 West 42nd Street, 7th Floor
New York, New York  10036

Attention:  Credit Administration/Shipping Department

                        REQUEST FOR LETTER OF CREDIT


Dear Sirs:

     Pursuant to Section 4.5 of the Amended and Restated Facility Agreement

dated  as of September 27,  1995 as amended by Amendment  No. 1 dated as of

June 13, 1996 (the  "Credit Agreement") among you as  Administrative Agent,

the Agents, the Banks and the Borrowers, we hereby irrevocably request that

a Standby Letter of Credit in the amount of USD _____________  be issued in

favor  of ______________  for  the account  of  ___________ to  secure  the

obligations  of  __________________  under  ___________________  with  such

letter  of credit  having an  expiration date of  ___________ and  with the

following special provisions:  _________________________ in accordance with

the terms of the Credit Agreement.

     If the issuance of the above  mentioned Letter of Credit fails to take

place or is delayed because of any of the conditions precedent specified in

Section 8.2  of the  Credit Agreement  have not  been satisfied  subject to

Section  4.5(a) of the  Credit Agreement, we hereby  agree to indemnify you

and the Banks  against any loss or reasonable expense  incurred as a result

of  the giving  of this  Request  for Letter  of  Credit including  without

limitation, any  loss resulting from actions  taken by you or  the Banks to

issue  or fund  the requested Letter  of Credit.   We further  agree that a

certificate  from you  as  the Administrative  Agent stating  in reasonable

detail  the amount of, and basis for, any such loss incurred by you and the

Banks shall be (save for manifest  error) be conclusive and binding for all

purposes.


     All  capitalized terms used  in this Request for  Letter of Credit and

not  defined herein  shall have the  meanings given  to them  in the Credit

Agreement.

                              Very truly yours,

                              [Account Party under Facility A or
                               Facility C]


                              By:____________________________
                              Name:__________________________
                              Title:_________________________


                                                                           <PAGE>


                                        EXHIBIT D TO AMENDMENT NO. 1 TO
                                              CREDIT FACILITY AGREEMENT

                              AMENDMENT NO. 1
                                     TO
                               ENSCO GUARANTY



     Amendment No. 1 dated as of June 13, 1996  to the Amended and Restated

ENSCO Guaranty (the "ENSCO Guaranty"), dated as of September 27, 1995, made

jointly and  severally by  ENSCO  INTERNATIONAL INCORPORATED  ("ENSCO"),  a

corporation organized and existing under the  laws of the State of Delaware

and  ENSCO  DELAWARE,   INC.  (formerly  known  as   PENROD,  INC.;  "ENSCO

DELAWARE"),  a corporation  organized and  existing under  the laws  of the

State of Delaware, (collectively, the "Guarantors") in favor of CHRISTIANIA

BANK OG KREDITKASSE, New York Branch, DEN NORSKE BANK ASA, New York Branch,

BANQUE INDOSUEZ and MEESPIERSON  N.V. and the other financial  institutions

from  time  to  time party  to  the  Credit  Agreement  defined below  (the

"Banks").

     WHEREAS,  pursuant to  the ENSCO  Guaranty, the  Guarantors guaranteed

certain obligations of their affiliates, ENSCO OFFSHORE COMPANY, a Delaware

corporation  and ENSCO  OFFSHORE  U.K. LTD.,  a  corporation organized  and

existing  under the laws of  England (the "Original  Borrowers"), under (i)

the  Amended and Restated Credit  Facility Agreement dated  as of September

27,  1995 among  the Original  Borrowers, the  Banks,  the Agents,  and the

Administrative Agent  named therein (the "Restated  Credit Agreement") (ii)

the promissory  notes of the Original  Borrowers in favor of  the Agents on

behalf of  the Banks  dated September 27,  1995 (the "Original  Notes") and

(iii) the other Loan Documents; and<PAGE>


     WHEREAS,  the Original  Borrowers, the  Banks and  the Agents  wish to

amend  the Restated Credit Agreement  in order to,  among other things, add

Facility  C  to the  Restated Credit  Agreement  in the  original principal

amount of USD 50,000,000 and add Dual Holding Company  ("Dual Holding", and

together  with the Original Borrowers, the "Borrowers") as a Borrower under

Facility  C of  the Restated  Credit Agreement,  pursuant to  the terms  of

Amendment No. 1  to Amended and  Restated Credit Agreement  dated the  date

hereof ("Amendment No. 1"); and

     WHEREAS,  the  obligations of  Dual Holding  under  Facility C  of the

Restated  Credit Agreement as amended  is evidenced by  the promissory note

dated the  date hereof ("Facility C Note") of Dual  Holding in favor of the

Administrative Agent on behalf of the Banks; and

     WHEREAS,  in order to induce the Banks  to enter into Amendment No. 1,

the Guarantors, as  affiliates of  the Borrowers, have  agreed pursuant  to

this Amendment No.  1 to ENSCO Guaranty to reaffirm  their guarantee to the

Banks of the due and  punctual payment of the Borrowers'  obligations under

the Restated  Credit Agreement as amended by Amendment No. 1, the Notes and

the other Loan  Documents and  the documents and  transactions referred  to

therein.

     NOW,  THEREFORE,  in consideration  of  the  premises, the  Guarantors

hereby agree as follows:

     5.   Each reference in the ENSCO Guaranty to the term "Guaranty" shall

          mean the ENSCO Guaranty, as amended by this Amendment No. 1.

     6.   Each reference in the  ENSCO Guaranty, as amended hereby,  to the

          Credit  Agreement shall  mean the  Restated Credit  Agreement, as

          amended by Amendment No. 1.

     7.   Each  reference in the ENSCO  Guaranty to the  term "Notes" shall

          mean the Original Notes and the Facility C Note.<PAGE>


     8.   Each  reference  in the  ENSCO Guaranty  to the  term "Borrowers"

          shall mean ENSCO  Offshore Company, ENSCO Offshore U.K.  Ltd. and

          Dual Holding Company.

     9.   Except  as specifically amended by  this Amendment No.  1, all of

          the  terms and provisions of  the ENSCO Guaranty  shall remain in

          full  force and  effect  and each  Guarantor hereby  confirms the

          validity  and  enforceability  of  its  guarantee  hereunder  and

          thereunder.

     10.  Each of the Guarantors acknowledges receipt of Amendment No. 1 to

          the Restated Credit Agreement and the documents referred  therein

          and the terms thereof.

     11.  All  capitalized terms used but not defined herein shall have the

          meanings given to them in the ENSCO Guaranty.

     12.  THIS AMENDMENT NO.  1 TO ENSCO GUARANTY SHALL BE  GOVERNED BY AND

          CONSTRUED  IN ACCORDANCE WITH THE  INTERNAL LAWS OF  STATE OF NEW

          YORK.

     IN WITNESS HEREOF, the parties hereto have caused this Amendment No. 1

to ENSCO Guaranty to be executed  by their duly authorized officers, all as

of the date noted above.

                                   ENSCO INTERNATIONAL INCORPORATED


                                   By:    _______________________________
                                   Name:  _______________________________  
                                   Title: _______________________________


                                   ENSCO DELAWARE, INC.


                                   By:    _______________________________
                                   Name:  _______________________________
                                   Title: _______________________________
     <PAGE>


ACCEPTED this 13th day of June, 1996.


CHRISTIANIA BANK OG KREDITKASSE, NEW YORK BRANCH


By:    ________________________
Name:  ________________________
Title: ________________________


DEN NORSKE BANK ASA, NEW YORK BRANCH

By:    ________________________
Name:  ________________________
Title: ________________________
 

BANQUE INDOSUEZ

By:    ________________________
Name:  ________________________
Title: ________________________


MEESPIERSON N.V.

By:    ________________________
Name:  ________________________
Title: ________________________<PAGE>


                                             EXHIBIT E TO AMENDMENT NO. 1
                                             TO CREDIT FACILITY AGREEMENT


                         ENSCO OFFSHORE II GUARANTY


     GUARANTY, dated as of  June 13, 1996,  made by ENSCO OFFSHORE  COMPANY

II, a corporation  organized and existing  under the laws  of the State  of

Delaware  (the "Guarantor"), in  favor of CHRISTIANIA  BANK OG KREDITKASSE,

New York Branch, and DEN NORSKE BANK ASA, New York Branch, BANQUE INDOSUEZ,

MEESPIERSON,  N.V. and the other  financial institutions from  time to time

party to the Credit Agreement defined below (the "Banks").

     WHEREAS, DUAL  HOLDING COMPANY, a  Delaware corporation  and the  sole

shareholder of the  Guarantor ("Dual Holding"),  ENSCO OFFSHORE COMPANY,  a

Delaware  corporation  and  ENSCO  OFFSHORE  U.K.  LIMITED,  a  corporation

organized  and existing  under  the  laws  of  England  (collectively,  the

"Borrowers"), have entered  into the Amended  and Restated Credit  Facility

Agreement  dated as of  September 27, 1995,  as amended by  Amendment No. 1

thereto dated the date hereof among the Borrowers, the Banks and the Agents

named therein, (the "Credit Agreement");

     WHEREAS, in order to induce the Banks to enter into Amendment No. 1 to

the Amended and  Restated Credit  Facility Agreement, the  Guarantor, as  a

subsidiary  of Dual Holding, has agreed  pursuant to this ENSCO Offshore II

Guaranty  to guarantee  to  the  Banks the  due  and punctual  payment  and

performance  of Dual Holding's obligations  under Facility C  of the Credit

Agreement; and

     WHEREAS, it  is to  the corporate benefit  of the Guarantor  that Dual

Holding execute the Credit Agreement, and

     WHEREAS, the Agents and the Banks are prepared to enter into Amendment

No.   1  to  the  Amended   and  Restated  Credit   Facility  Agreement  in

consideration,  among other  things,  of the  execution  of this  ENSCO  II<PAGE>


Guaranty by the Guarantor;

     NOW, THEREFORE, in consideration of the above recitals, and other good

and  valuable consideration, the receipt and sufficiency of which is hereby

acknowledged, the parties agree as follows:

     SECTION  1.  Guaranty.   The  Guarantor  hereby   unconditionally  and

irrevocably guarantees  the payment by Dual  Holding of all amounts  due by

Dual Holding  under Facility C of  the Credit Agreement and  the Facility C

Note and  the performance by Dual  Holding of all of  its obligations under

the Credit Agreement and  the other New Loan Documents (the  obligations of

Dual Holding under the Credit Agreement, the Facility C Note  and the other

New  Loan Documents are hereinafter  referred to as  the "Obligations") and

agrees in addition  to pay any and all reasonable  expenses incurred by the

Banks and the Agents in enforcing any of the rights of the Banks under this

Guaranty.

     SECTION 2. Guaranty Absolute. (a) The Guarantor hereby guarantees that

the Obligations  will be paid and performed strictly in accordance with the

terms of the Credit  Agreement, the Facility C Note and  the other New Loan

Documents, regardless  of any law, regulation or  order now or hereafter in

effect in any jurisdiction affecting any of such terms or the rights of the

Agents  with respect  thereto. The  liability of  the Guarantor  under this

Guaranty shall be absolute, unconditional and irrevocable irrespective of:

          (i)  any  lack  of  validity  or  enforceability  of  the  Credit

     Agreement, the Facility C Note or any other New Loan Document;

          (ii) any change in the time, manner or place of payment of, or in

     any  other  term of,  all  or any  of  the Obligations,  or  any other

     amendment thereof or waiver of or any consent to departure therefrom; 

          (iii) any other circumstance, except payment of the  Obligations,

     which  might  otherwise  constitute  a  defense  available  to,  or  a

                                   - 6 -<PAGE>


     discharge  of  Dual  Holding in  respect  of  the  Obligations or  the

     Guarantor in respect of this Guaranty.

     (b)  This  is a  guaranty  of  payment  and  performance  and  not  of

collection and  the Banks shall  not be required to  exhaust their remedies

against  Dual Holding  before requiring  the Guarantor  to pay  and perform

under this Guaranty.

     (c)  This Guaranty shall continue to be effective or be reinstated, as

the case may be,  if at any time any  payment of any of the  Obligations is

rescinded or must otherwise  be returned by the Banks upon  the insolvency,

bankruptcy or reorganization of  the Borrowers or otherwise, all  as though

such payment had not been made.

     SECTION 3. Waiver. The Guarantor hereby waives promptness,  diligence,

notice of  acceptance and  any  other notice  with respect  to  any of  the

Obligations  and this Guaranty (other  than notices required  by the Credit

Agreement) and  any requirement that  the Agents exhaust any  right or take

any  action against  the Borrowers  or any  other person  or entity  or any

collateral.

     SECTION  4. Subrogation.  The Guarantor  will not exercise  any rights

which  it may  acquire by way  of subrogation  under this  Guaranty, by any

payment made hereunder or  otherwise, until all the Obligations  shall have

been paid in full. If any amount shall be paid to the Guarantor  on account

of  such subrogation rights at any time  when all the Obligations shall not

have been paid in  full, such amount,  or such portion  as is necessary  to

fully  satisfy the Facility C  Obligations, shall be  forthwith paid to the

Banks  to be  credited  and applied  against the  Obligations.  If (i)  the

Guarantor  shall make  payment to  the  Banks of  all  or any  part of  the

Obligations and (ii)  all the Obligations shall be paid  in full, the Banks

will execute and  deliver to the  Guarantor appropriate documents,  without

                                   - 7 -<PAGE>


recourse and without  representation or warranty,  releasing this  Guaranty

and transferring to the Guarantor any and all rights the Banks have or  may

have had  against the Borrowers and  necessary to evidence the  transfer by

subrogation to the Guarantor  of any interest in the  Obligations resulting

from such payment by the Guarantor.

     SECTION 5. Payments Free and Clear of Taxes, Etc. (a) All sums payable

by  the Guarantor under this Guaranty, whether of principal, interest, fees

or otherwise,  shall be paid in full without set-off or counterclaim and in

such amounts  as may  be necessary  in order that  all such  payments after

deduction or withholding for or on account of any present  or future taxes,

levies,  imposts, duties or other  charges of whatsoever  nature imposed by

any Governmental Agency or taxing authority thereof, other than any tax, on

or  measured by  the income of  the Agents  or the  Banks (collectively the

"Taxes"), shall not be less than the amounts otherwise specified to be paid

under this Guaranty.

     (b)  A  certificate as to any additional amounts payable to the Agents

under this Section 5 submitted to the  Guarantor by the Banks 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.

     (c)  With respect to each  deduction or withholding for or  on account

of  any Taxes,  the Guarantor  shall  promptly furnish  to the  Agents such

certificates,  receipts  and other  documents as  may  be required  (in the

reasonable  judgment of the  Agents) to establish any  income tax credit to

which any of the Banks may be entitled. In  the event that such a deduction

or withholding for Taxes becomes so applicable, the Banks and the Guarantor

will use their best efforts to minimize the effect of such Taxes.

     (d)  If any  Taxes specified in subsection  (a) above are  paid by any

Bank, the Guarantor will,  upon demand of the Administrative  Agent whether

                                   - 8 -<PAGE>


or  not such Taxes  shall be correctly or  legally asserted, indemnify such

Bank  for such payments, together with any interest, penalties and expenses

in connection therewith. In such case, the Guarantor shall be subrogated to

the rights of the Banks to appear and contest the levy or assessment of any

such  Taxes. The  Administrative  Agent will  give  written notice  to  the

Guarantor upon receipt of any notice  regarding the assessment of any Taxes

and will  cooperate with the Guarantor in  the event the Guarantor contests

the assessment or payment of any Taxes.

     (e)  If  for the  purpose  of  obtaining  an  order  or  judgment,  or

execution thereon, it should  become necessary for  a court to convert  the

amount due hereunder into  another currency, the Guarantor agrees  that the

rate of exchange to be applied  shall be that at which, in  accordance with

normal banking procedures, the Administrative Agent could purchase Dollars,

with such  other currency in London  (or if unable to  purchase Dollars, in

London, then in New York) on the Business Day preceding that on which  such

order or judgment is given (whether or not this includes a premium over any

official  or  other rate  of exchange).  Further,  the Guarantor  agrees to

reimburse the  Banks for  any loss  incurred by  them as  a  result of  any

judgment or order being expressed in a currency other than Dollars and as a

result of any variation having occurred in rates of exchange (as determined

in accordance with  the above formula) between the date  of any such amount

becoming due hereunder and the date of actual payment thereof.

     SECTION  6. Consent  to Jurisdiction:  Waiver of  Immunities. (a)  The

Guarantor  represents and  warrants  to the  Banks  that the  Guarantor  is

generally  subject to suit and that neither  it nor its property enjoys any

right to  immunity from legal  proceedings or execution  on the  grounds of

sovereignty or  otherwise. The Guarantor irrevocably waives any immunity it

may have from the  jurisdictions of the courts of  the United States or  of

                                   - 9 -<PAGE>


its state of incorporation or  which its property may have from  attachment

(before or after judgment) or execution by a court of the United States  or

any  state.  The  Guarantor  irrevocably  consents  to  the   non-exclusive

jurisdiction of the  courts of the State  of New York or  the United States

District  Court for  the Southern  District of  New York  or courts  of any

country or place where the Guarantor has its principal place of business or

its  assets may be found, at the election  of the Agents. Any legal process

shall  be  sufficiently  served  on   the  Guarantor  in  connection   with

proceedings in the State of  New York if delivered to the Guarantor at 2700

Fountain Place, 1445 Ross Avenue, Dallas, Texas 75202. The Guarantor agrees

that  a final,  non-appealable judgment  in any  such action  or proceeding

shall be conclusive  and may be enforced in other  jurisdictions by suit on

the judgment or in any other manner provided by law.

     (b)  Nothing in  this Section 6 shall affect the right of the Banks to

serve legal  process in  any other  manner permitted by  law or  affect the

right of the Banks to bring any action or proceeding  against the Guarantor

or its property in the courts of any other jurisdictions.

     (c)  To the extent that the Guarantor has or hereafter may acquire any

immunity from jurisdiction  of any court or from any legal process (whether

through  service of notice, attachment prior to judgment, attachment in aid

of  execution,  execution  or otherwise)  with  respect  to  itself or  its

property, the Guarantor hereby irrevocably waives such immunity in  respect

of its obligations under this Guaranty.

     SECTION  7.  Representations and  Warranties.    The Guarantor  hereby

represents and warrants as to the following:

     (a)  It  is a corporation  duly incorporated, validly  existing and in

good standing under the laws of the State of Delaware and is duly qualified

to do business in the jurisdictions in which the failure to be so qualified

                                   - 10 -<PAGE>


would have a material adverse effect as defined in the Credit Agreement. 

     (b)  The  execution, delivery and performance by the Guarantor of this

Guaranty  and any other documents contemplated herein and the completion of

all  other  transactions herein  contemplated  are  within the  Guarantor's

corporate authority,  are in  furtherance of  its corporate  purposes, have

been  duly  authorized  by all  necessary  corporate  action  and will  not

contravene any  applicable law  or regulation  nor violate the  Guarantor's

Articles  of  Incorporation or  By-Laws nor  any  agreement binding  on the

Guarantor nor  any applicable law or  regulation or order or  decree of any

governmental  authority or agency  of the United  States of America  or the

State of Texas.

     (c)  This   Guaranty   is  supported   by   adequate  and   sufficient

consideration,  has  been validly  signed on  behalf  of the  Guarantor and

represents the valid  and binding obligation of  the Guarantor, enforceable

in  accordance with  its  terms and  will  not  result in  the  Guarantor's

liabilities  exceeding  the  fair   market  value  of  its  assets.     The

enforceability of  this  Guaranty, however,  is subject  to all  applicable

bankruptcy, insolvency, reorganization, moratorium and other laws affecting

the rights of creditors generally and to general equity principles.

     (d)  The legality, validity, enforceability  or admissibility of  this

Guaranty are not  subject or  conditional upon this  Guaranty being  filed,

recorded or enrolled with  any governmental authority or agency  or stamped

with  any stamp, duty  or similar transaction  tax of the  United States of

America or the State of Texas.

     (e)  The execution, delivery  and performance by the Guarantor of this

Guaranty and of each instrument given to secure this Guaranty do not to the

best  of its  knowledge after  due inquiry  (1)  violate any  law, statute,

ordinance,  decree,  order,  judgment  issued  by  any  non-United   States

                                   - 11 -<PAGE>


government,  the government of  the United States, any  state of the United

States  and any political subsidiaries thereof, and any agency, department,

commission,  board or court having  jurisdiction over the  Borrowers or the

Guarantor  or  its respective  assets or  property;  (2) conflict  with, or

result in a breach of the terms, conditions or provisions of, or constitute

a default under, any agreement or  instrument to which the Guarantor is now

a party or by which the Guarantor or its property may be bound;  (3) result

in the  creation of any lien, charge or encumbrance upon any of Guarantor's

property or assets (other than as  provided in the New Loan Documents); (4)

violate the Guarantor's Articles  of Incorporation; or (5) require  (x) any

consent of any other person (including, without limitation, shareholders of

any  affiliate  of   Guarantor)  or  (y)  any   consent,  license,  permit,

authorization  or other approval of, any giving of notice to, any exemption

by,  any registration, declaration or filing (other than the routine filing

of security documents)  with, or any taking of any  other action in respect

of, any court  arbitrator, administrative agency  or any non-United  States

government, the  government of the United  States, any state of  the United

States and  any political subdivisions thereof, and any agency, department,

commission,  board or court having  jurisdiction over the  Guarantor or its

assets or property.

     (f)  The execution and  delivery of  this Guaranty to  the Banks  will

benefit directly or indirectly the Guarantor.

     (g)  No representation or  warranty contained in this  Guaranty and no

statement contained in any certificate, schedule, list, financial statement

or other instrument furnished by or on behalf of Guarantor to the Agents or

the Banks contains any untrue statement of material fact.

     (h)  There  are  no  pending,  or  to  the  best  of  the  Guarantor's

knowledge, any  threatened actions or proceedings  affecting the Guarantor,

                                   - 12 -<PAGE>


any of the Guarantor's affiliates or any of the Guarantor's property before

any  court, governmental  agency or  arbitrator in  any country,  which may

materially adversely  affect the financial  condition or operations  of the

Guarantor.

     (i)  Dual Holding is the sole shareholder of the Guarantor.

     SECTION 8. Covenants. The Guarantor covenants and agrees that, so long

as any part  of the Obligations  shall remain unpaid,  it will, unless  the

Banks shall otherwise  consent in  writing, comply with  the covenants  set

forth in the Credit Agreement to the extent applicable to the Guarantor.

     SECTION 9. The Credit Agreement and the Facility C Note. The Guarantor

hereby acknowledges receipt of the Credit Agreement and the Facility C Note

in  execution form and  hereby consents and agrees  to the Credit Agreement

and the Facility C Note and to all the terms and provisions thereof.

     SECTION 10. Amendments, Etc.  No amendment or waiver of  any provision

of this  Guaranty nor consent  to any departure by  the Guarantor therefrom

shall in  any event be  effective unless the  same shall be in  writing and

signed  by the Banks,  and then such  waiver or consent  shall be effective

only in the specific instance and for the specific purpose for which given.

     SECTION 11. Notices. (a) All notices,  requests, consents, demands and

other communications provided for or permitted hereunder shall be effective

three (3) days  after being duly deposited in  the mails, certified, return

receipt  requested,  or upon  receipt if  delivered  by Federal  Express or

similar  courier  company  or  transmitted by  telefax,  addressed  to  the

respective party at the address set forth below.

   Banks:      Christiania Bank og Kreditkasse,
                 New York Branch
               11 West 42nd Street, 7th Floor
               New York, New York 10036
               Telefax No. (212) 827-4888
               Attention: Head of Shipping


                                   - 13 -<PAGE>


               Den norske Bank ASA, New York Branch
               200 Park Avenue
               New York, New York 10166
               Telefax No. (212) 681-3900
               Attention: Shipping Group Head
          
               Banque Indosuez
               47, Rue de Monceau
               F 7500 Paris
               France
               Telefax No. 011 331 4420 1934
               Attention:  Francine Struxiano-Auffray
                           with copies to:
          
               Banque Indosuez
               Representative Office
               Ruselokkveien 6
               Oslo 0120
               Norway
               Telefax No. 011 472 283 3055
               Attention: Bjorn Hurdevadt-Gulbrandsen

               MeesPierson N.V.
               Camomile Court
               23 Camomile Street
               London EC3A 7PP
               England
               Telefax No. 011 44 171 444 8810
               Attention: Shipping Department
          

Guarantor:     ENSCO Offshore Company II 
               2700 Fountain Place
               1445 Ross Avenue
               Dallas, Texas 75202
               Telefax No. (214) 855-0300
               Attention: Chief Financial Officer


     (b)  Any  of the parties hereto  may change its  respective address by

notice in writing given to the other parties to this Agreement.

     SECTION 12.  No Waiver; Remedies. No failure on the part of the Agents

or the Banks  to exercise, and no delay in  exercising, any right hereunder

shall operate as a waiver thereof; nor shall any single or partial exercise

of any  right hereunder preclude  any other or further  exercise thereof or

the  exercise  of  any  other  right.  The  remedies  herein  provided  are

cumulative and not exclusive of any remedies provided by law.

                                   - 14 -<PAGE>


     SECTION  13.  Continuing  Guaranty.  This  Guaranty  is  a  continuing

guaranty  and shall (i)  remain in full  force and effect  until payment in

full of the Obligations and payment in full of all  other amounts due under

this  Guaranty, (ii)  be  binding upon  the  Guarantor, its  successors  or

assigns,  as the  case may be,  and (iii)  inure to  the benefit of  and be

enforceable by the  Agents and  the Banks and  their successors,  permitted

transferees and permitted  assigns, provided, however,  that the  Guarantor

may not transfer the Guaranty or any part thereof without the prior written

consent of the Banks.

     SECTION  14. Survival. The  representations, covenants  and agreements

herein  set forth shall continue and survive  until the termination of this

Guaranty at which time it shall be returned to the Guarantor.

     SECTION 15. Defined Terms.  All terms used in this  Guaranty which are

not defined  herein shall have  the meanings  given to them  in the  Credit

Agreement.

     SECTION 16. GOVERNING  LAW. THIS  GUARANTY AND ALL  ISSUES ARISING  IN

CONNECTION WITH  THIS GUARANTY  AND  THE TRANSACTIONS  CONTEMPLATED  HEREBY

SHALL BE  GOVERNED BY, AND  CONSTRUED IN ACCORDANCE  WITH, THE LAWS  OF THE

STATE OF NEW YORK WITHOUT REGARD TO ITS CONFLICT OF LAWS RULES.

     SECTION 17. WAIVER OF  JURY TRIAL. THE GUARANTOR AND THE  BANKS HEREBY

WAIVE THE RIGHT TO TRIAL  BY JURY IN ANY JUDICIAL PROCEEDING  TO WHICH THEY

ARE PARTIES INVOLVING, DIRECTLY OR INDIRECTLY, ANY MATTER (WHETHER SOUNDING

IN TORT,  CONTRACT OR OTHERWISE)  IN ANY  WAY ARISING OUT,  RELATED TO,  OR

CONNECTED WITH THIS GUARANTY, ANY OF THE LOAN DOCUMENTS OR THE RELATIONSHIP

ESTABLISHED HEREUNDER.

     SECTION  18. CONFLICTS.  IN  THE  EVENT  OF  A  CONFLICT  BETWEEN  THE

PROVISIONS  OF  THIS  GUARANTY  AND  THOSE  OF  ANY  OTHER  LOAN  DOCUMENT,

INCLUDING, WITHOUT LIMITATION, THE CREDIT AGREEMENT,  THE PROVISIONS OF THE

                                   - 15 -<PAGE>



CREDIT AGREEMENT SHALL CONTROL.

     IN WITNESS WHEREOF, the Guarantor has duly executed and delivered this

Guaranty, as of the date first above written.

                                   ENSCO OFFSHORE COMPANY II 


                                   By:    /s/   ROBERT O. ISAAC
                                        -------------------------------
                                        Name:   Robert O. Isaac
                                        Title:  Assistant Secretary



ACCEPTED this ___   day of June, 1996.

CHRISTIANIA BANK OG KREDITKASSE, New York Branch


By:  ____________________________________                            
     Name:    ___________________________
     Title:   ___________________________


By:  ____________________________________                            
     Name:    ___________________________
     Title:   ___________________________



DEN NORSKE BANK ASA, New York Branch


By:  ____________________________________                            
     Name:    ___________________________
     Title:   ___________________________


By:  ____________________________________                            
     Name:    ___________________________
     Title:   ___________________________








                                   - 16 -<PAGE>



BANQUE INDOSUEZ


By:        /s/   DAVID JUNGMAN
     ------------------------------------
     Name:       David Jungman
     Title:      Attorney-in-Fact


MEESPIERSON N.V.


By:        /s/   DAVID JUNGMAN
     ------------------------------------
     Name:       David Jungman
     Title:      Attorney-in-Fact



































                                   - 17 -<PAGE>




                              AMENDMENT NO. 3

                                     TO

                       FIRST PREFERRED FLEET MORTGAGE



     AMENDMENT  NO. 3  dated June  13, 1996  ("Amendment No.  3") by  ENSCO
OFFSHORE  COMPANY, a  Delaware  corporation  with  its principal  place  of
business at 2700 Fountain Place, 1445 Ross Avenue, Dallas, Texas 75202 (the
"Shipowner"), to BANKERS TRUST COMPANY, a New York banking corporation with
an office  at Four Albany Street,  Fourth Floor, New York,  New York 10006,
not in its individual capacity but solely as Trustee (the "Mortgagee").


                            W I T N E S S E T H:

     WHEREAS, the Shipowner is the owner of 100% of the following U.S. flag
drilling rigs (the "Vessels"):

               NAME        OFFICIAL NO.      HOME PORT

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

which Vessels have  been duly registered  in the name  of the Shipowner  in
accordance with the laws of the United States of America; and

     WHEREAS, the  Shipowner executed  and delivered  to the Mortgagee  the
First  Preferred Fleet Mortgage dated  September 27, 1995  covering 100% of
each of the Vessels (the "Mortgage" and the terms herein, unless  otherwise
defined, being used as defined in the Mortgage); and

     WHEREAS, the  Shipowner granted  the Mortgage  to secure,  among other
things, payment of all amounts due and owing under the Amended and Restated
Credit Agreement dated  as of September  27, 1995, as amended  (the "Credit
Agreement"),  among the Banks listed therein, the Shipowner, ENSCO Offshore
(U.K.) Ltd. (together  with the Shipowner,  the "Original Borrowers"),  and
the Agents and  Administrative Agent named therein, and the  Facility A and
Facility B Notes issued in connection therewith, as amended; and<PAGE>



     WHEREAS, a true  and correct copy of the  Credit Agreement is attached
to the Mortgage as Exhibit A and forms a part thereof; and

     WHEREAS, pursuant to the  terms of the Trust Indenture  dated December
17, 1993 among the Original Borrowers and the  Mortgagee, the Mortgagee has
agreed to  act as Trustee for the benefit of  the Banks with respect to the
collateral granted by the  Borrowers to secure their obligations  under the
Credit Agreement; and

     WHEREAS, the Mortgage was received for record  on December 17, 1993 at
10:23 a.m. at the United States Coast Guard Vessel  Documentation Office in
New Orleans, Louisiana and recorded in Book PM-247, page 109; and

     WHEREAS, pursuant to Amendment  No. 1 to the Credit Agreement dated as
of November 1, 1994, certain terms of the Credit Agreement were amended and
the Mortgage was amended by Amendment No. 1 to the Mortgage to reflect such
changes in the Credit Agreement; and

     WHEREAS, Amendment No.  1 to the Mortgage  was received for  record at
9:35  a.m. on  January 13,  1995 at  the United  States Coast  Guard Vessel
Documentation Office in New Orleans, Louisiana and was recorded in Book PM-
9501, Instrument 206; and

     WHEREAS, the Credit Agreement was amended and restated pursuant to the
terms of the  Amended and  Restated Credit Facility  Agreement dated as  of
September 27, 1995, and the Mortgage  was amended pursuant to Amendment No.
2 to the Mortgage to reflect such changes to the Credit Agreement; and

     WHEREAS,  Amendment No. 2 to  the Mortgage was  received for record at
1:45  p.m. on September  27, 1995 in  the United States  Coast Guard Vessel
Documentation Office in  New Orleans,  Louisiana and was  recorded in  Book
9509, Instrument 125; and 

     WHEREAS,  pursuant to Amendment No.  1 to Amended  and Restated Credit
Agreement dated  as of the date  hereof ("Amendment No. 1")  the Banks have
agreed,  among other things, to make available  to Dual Holding Company, an
affiliate  of  the Shipowner  (together  with the  Original  Borrowers, the
"Borrowers"),  a  credit  facility  of up  to  USD  50,000,000  or,  in the
circumstances provided in  Section 4.6 of  the Credit Agreement, up  to USD
65,000,000 and such additional amount is to be secured by  the Mortgage and
evidenced by the Facility C Note (together with the Facility A and Facility
B Notes, as amended, restated and endorsed, the "Notes").<PAGE>



     NOW, THEREFORE, THIS AMENDMENT NO. 3 WITNESSETH:

                               ARTICLE FIRST

     SECTION 1.     The form  of  Credit  Agreement  as Exhibit  A  to  the
Mortgage is  hereby supplemented by adding to it Amendment No. 1 to Amended
and Restated  Credit Agreement in the  form of Exhibit A  to this Amendment
No. 3.

     SECTION 2.     Hereinafter each reference in the Mortgage, as amended,
to the Credit  Agreement shall refer to the Credit  Agreement as amended by
Amendment No. 1.

     SECTION 3.     Article  III,  Section  9  of the  Mortgage  is  hereby
amended to read as follows:

     "SECTION 9.  The maximum principal amount that may be outstanding
     under  this Mortgage at any one time is One Hundred Fifty Million
     United States Dollars  (USD 150,000,000) and  for the purpose  of
     recording this Mortgage as required by Chapter 313 of Title 46 of
     the United States Code, the total amount  of this Mortgage is USD
     150,000,000  plus interest,  costs, expenses  and performance  of
     mortgage  covenants.   The discharge  amount is  the same  as the
     total amount."

     SECTION 4.     For the purpose  of recording this Amendment  No. 3, as
required by 46 U.S. Code  Ch. 313, it amends mortgage covenants;  the total
amount of the  Mortgage is increased  to One Hundred  Fifty Million  United
States  Dollars  (USD  150,000,000)  plus  interest,  costs,  expenses  and
performance of mortgage  covenants; the discharge amount is the same as the
total amount; and there is no separate discharge amount.

                               ARTICLE SECOND

     SECTION 1.   All of the covenants  and agreements on  the part of  the
Shipowner which are set forth in, and all of the rights, privileges, powers
and immunities of the Mortgagee which are provided for in  the Mortgage are
incorporated  herein and shall apply  to the Vessels  hereby and heretofore
subjected to the lien of the Mortgage and otherwise with the same force and
effect as though set forth at length in this supplement.

     SECTION 2.   This instrument  is executed  as and shall  constitute an
instrument  supplemental  to  the  Mortgage,  and  shall  be  construed  in
connection with and as part of the Mortgage.

     SECTION 3.  Except as modified and expressly amended by this Amendment
No. 3  and any other supplement,  the Mortgage is in  all respects ratified
and confirmed and all the terms, provisions and conditions thereof shall be
and remain in full force and effect.

     SECTION 4.   THIS AMENDMENT  NO. 3 TO  FIRST PREFERRED FLEET  MORTGAGE
SHALL BE GOVERNED  BY, AND CONSTRUED  IN ACCORDANCE WITH,  THE LAWS OF  THE
UNITED  STATES OF  AMERICA AND,  TO THE  EXTENT THEY  DO NOT APPLY,  TO THE
INTERNAL LAWS OF THE STATE OF NEW YORK.<PAGE>



     SECTION  5.  This  Amendment No. 3  may be  executed in any  number of
counterparts,  and  each of  such counterparts  shall  for all  purposes be
deemed to be an original.

     IN WITNESS WHEREOF, Amendment No. 3 has been executed and delivered on
the day and year date first above written.


                         ENSCO OFFSHORE COMPANY


                         BY:  /s/       ROBERT O. ISAAC
                              ------------------------------------
                              NAME:     Robert O. Isaac
                              TITLE:    Assistant Secretary



                         BANKERS  TRUST  COMPANY,  not  in  its  individual
                         capacity but solely as Trustee, as Mortgagee


                         BY:  /s/       JACQUELINE BARTNICK
                              ------------------------------------
                              NAME:     Jacqueline Bartnick
                              TITLE:    Assistant Vice President<PAGE>




THE STATE OF TEXAS  :
                    :
COUNTY OF HARRIS    :

     On this  13th day of June,  1996, before me personally  came Robert O.
Isaac, to me known, who,  being by me duly  sworn, did depose and say  that
his address is 2700 Fountain Place, 1445 Ross Avenue, Dallas, Texas  75202;
that  he  is  the  Assistant  Secretary  of  ENSCO  Offshore  Company,  the
corporation described  in and which executed the  foregoing instrument; and
that he signed his name thereto pursuant to authority granted to him by the
Board of Directors of said corporation.



                              /s/     S. N. NIXON
                              -----------------------------------------  
                              Notary Public, State of Texas




                              [----------------------------------------]
                              [                                        ]
                              [Notary             S. N. NIXON          ]
                              [ Seal      Notary Public, State of Texas]
                              [             Commission Expires 7-18-99 ]
                              [                                        ]
                              [----------------------------------------]<PAGE>





THE STATE OF NEW YORK    :
                         :
COUNTY OF NEW YORK       :

     On this  13th day  of June,  1996,  before me  personally came  Jackie
Bartnick, to me known, who, being by me duly sworn, did depose and say that
her address is Four Albany  Place, Fourth Floor, New York, New  York 10006;
that she is Asst. Vice President of  Bankers Trust Company, the corporation
described  in and  which executed  the foregoing  instrument; and  that she
signed her name thereto pursuant  to authority granted to her by  the Board
of Directors of said corporation.


                              /s/  MARGARET BEREZA
                              --------------------------------------
                              Notary Public, State of Texas



                              [----------------------------------------]
                              [                                        ]
                              [Notary           MARGARET BEREZA        ]
                              [ Seal   Notary Public, State of New York]
                              [                 No. 31-5023900         ]
                              [          Qualified in New York County  ]
                              [             Commission Expires 2-22-98 ]
                              [                                        ]
                              [----------------------------------------]<PAGE>

















                            Dated June 13, 1996



                         ENSCO OFFSHORE COMPANY II

                                    and

                     BANKERS TRUST COMPANY, AS TRUSTEE

                                            
___________________________________________________________________________


                       FIRST PREFERRED FLEET MORTGAGE
                      -------------------------------
                                      <PAGE>


                       FIRST PREFERRED FLEET MORTGAGE


           FIRST  PREFERRED FLEET MORTGAGE, made the 13th day of June, 1996
by ENSCO  OFFSHORE COMPANY II, a  corporation formed under the  laws of the
State of  Delaware, with  its address  at  2700 Fountain  Place, 1445  Ross
Avenue,  Dallas, Texas  (herein  called the "Shipowner"),  to BANKERS TRUST
COMPANY, a corporation  organized under the laws of the  State of New York,
with its  address at Four Albany  Street, Fourth Floor, New  York, New York
10006, not in its individual capacity but solely as Trustee, its successors
and assigns (herein called the "Mortgagee");

          WHEREAS:

          A.  The Shipowner is the sole owner of the whole of the following
Liberian Flag jackup drilling units:


 NAME         OFFICIAL NO.   GROSS TONS   NET TONS     HOME PORT

 ENSCO 50         9383          5395        1618       Monrovia
 ENSCO 51         9384          4089        4089       Monrovia
 ENSCO 53        10260          4976        1244       Monrovia
 ENSCO 54        10159          5563        1668       Monrovia

duly documented  in the name of the Shipowner under the law of the Republic
of Liberia.

          B.  ENSCO  Offshore Company,  ENSCO Offshore U.K.  Ltd. and  Dual
Holding  Company  ("Dual",  and  collectively, the  "Borrowers"),  each  an
affiliate  of  the  Shipowner, are  parties  to  that  certain Amended  and
Restated Credit  Agreement dated  as of September  27, 1995, as  amended by
Amendment  No. 1  dated as of  June 13,  1996 among  the Borrowers  and the
Banks, the Agents and  the Administrative Agent named therein (as  the same
may be amended from time to time, the "Credit Agreement") pursuant to which
the Banks have agreed to make available a credit facility  to the Borrowers
of up  to ONE HUNDRED FIFTY  MILLION AND 00/100 UNITED  STATES DOLLARS (USD
150,000,000.00) upon the terms and conditions therein set forth.  A copy of
the form  of the Credit Agreement, is attached hereto as Exhibit A and made
a part hereof.

          C.   The  Shipowner  has,  pursuant  to  the  ENSCO  Offshore  II
Guaranty dated as of June 13, 1996 (the "Guaranty")  in favor of the Banks,
the form of which is attached as Exhibit E to Amendment No. 1 to the Credit
Agreement  guaranteed  to the  Banks the  due and  punctual payment  of all
amounts due under Facility C of the Credit Agreement and the performance of
all  of  Dual's obligations  under  the  Facility  C Note  and  the  Credit
Agreement.   The Facility  C  Commitments are  USD  50,000,000 or,  in  the
circumstances provided in Section  4.6 of the Credit  Agreement, up to  USD
65,000,000.  Consequently the amount of this Mortgage is USD 65,000,000 and
the maturity date of this Mortgage is on demand.

          D.   Pursuant  to  the terms  of  the Trust  Indenture  among the
Borrowers, the Shipowner  and the  Mortgagee dated September  27, 1995,  as
amended  by  Supplement  No.  1  dated as  of  June  13,  1996  (the "Trust
Indenture"), the  Mortgagee has agreed to  act on behalf of  the Banks, the<PAGE>



Agent and the Administrative Agent with respect to the security granted  by
the Borrowers  and the Shipowner to secure the obligations under the Credit
Agreement and the Guaranty.

          E.  In order to secure the obligations of the Shipowner under the
Guaranty and  the payment of all other sums that may hereinafter be secured
by this Mortgage  in accordance with  the terms hereof,  and to secure  the
performance  and observance  of  and compliance  with  all the  agreements,
covenants  and  conditions  of  this  Mortgage,  the   Shipowner  has  duly
authorized  the  execution  and  delivery  of  this  First  Preferred Fleet
Mortgage.

          NOW, THEREFORE, in consideration  of the premises and  other good
and  valuable consideration,  and in  order to  secure the  payment  of all
amounts  outstanding under Facility C guaranteed by the Guaranty (including
the principal  of  and interest  thereon) according  to the  terms of  this
Mortgage, the Guaranty  and the Credit  Agreement, and the  payment of  all
other sums  that may hereafter  be secured by  this Mortgage in  accordance
with the terms hereof (all such  principal, interest, and other sums  being
hereinafter  called the  "Indebtedness hereby  secured") and to  secure the
performance and observance of  and  compliance with all of  the agreements,
covenants  and conditions  of this  Mortgage, the  Guaranty and  the Credit
Agreement,  the  Shipowner  has  granted,  conveyed,  mortgaged,   pledged,
confirmed,  assigned, transferred and set  over and by  these presents does
grant, convey, mortgage,  pledge, confirm, assign,  transfer and set  over,
unto the Mortgagee, and its successors  and assigns the whole of the jackup
drilling units ENSCO 50, ENSCO 51, ENSCO 53 and ENSCO 54 including, without
being limited to,  all of  the boilers, engines,  machinery, masts,  spars,
boats, anchors,  cables, chains, rigging, tackle,  capstans, outfit, tools,
pumps  and   pumping  equipment,  drills,   apparel,  furniture,  fittings,
equipment,  drilling equipment,  spare parts,  and all  other appurtenances
thereunto  appertaining  or  belonging,  whether  now  owned  or  hereafter
acquired,  and  also any  and  all  additions,  improvements, renewals  and
replacements  hereafter  made  in or  to  such drilling  rigs  or  any part
thereof,  including all  items and  appurtenances aforesaid  (such drilling
rigs,  together  with  all  of  the  foregoing,  being  herein  called  the
"Vessels").

          TO  HAVE AND  TO HOLD all  and singular  the above  mortgaged and
described  property unto the Mortgagee  and its successors  and assigns, to
its  and  to its  successors'  and  assigns' own  use,  benefit and  behoof
forever.

          PROVIDED, and these presents are upon the condition, that, if the
Shipowner or its  successors or assigns shall  pay or cause to be  paid the
Indebtedness  hereby secured  as and  when the  same  shall become  due and
payable  in accordance  with the  Credit Agreement,  the Guaranty  and this
Mortgage, and all other such  sums as may hereafter become secured  by this
Mortgage in accordance with the terms hereof, and  the Shipowner shall duly
perform, observe and  comply with or  cause to be  performed, observed,  or
complied with all the covenants, terms and conditions of this Mortgage, the
Guaranty  and the Credit Agreement  expressed or implied,  to be performed,
then  this  Mortgage  and the  estate  and  rights  hereunder shall  cease,
determine and be void, otherwise to remain in full force and effect.<PAGE>



          The  Shipowner for  itself,  its successors  and assigns,  hereby
covenants,  declares and agrees with  the Mortgagee and  its successors and
assigns that the Vessels are  to be held subject to the  further covenants,
conditions, terms and uses hereinafter set forth.

                                 ARTICLE I

              Representations and Covenants of the Shipowner.


          Section 1.   (a)   The Shipowner hereby  acknowledges that  it is
justly indebted  in the principal amount of USD 65,000,000 and will pay the
Indebtedness hereby secured and  will observe, perform and comply  with the
covenants,  terms and conditions herein and in  the Guaranty and the Credit
Agreement, express  or implied, on  its part  to be observed,  performed or
complied with.  

          (b)   The  obligation of  the Indebtedness  hereby secured  is an
obligation in  Dollars of the United  States of America and  the term "USD"
when  used herein shall mean such Dollars.  Notwithstanding fluctuations in
the value or rate of Dollars  in terms of gold, or any other  currency, all
payments  hereunder  or otherwise  in  respect of  the  Indebtedness hereby
secured shall be payable in terms of Dollars when due, and if not paid when
due, in  terms of Dollars when paid, whether such payment is made before or
after the due date.

          Section 2.   The Shipowner  is a corporation  duly organized  and
existing  under the laws  of the  State of Delaware  and is qualified  as a
Foreign Maritime  Entity under the  laws of the  Republic of Liberia.   The
Shipowner has full power and authority to own and mortgage the Vessels; all
action necessary and required by law for the execution and delivery of this
Mortgage has been duly  and effectively taken; and the  Indebtedness hereby
secured is  and  will  be  the valid  and  enforceable  obligation  of  the
Shipowner in accordance with its terms.

          Section 3.  The Shipowner lawfully owns and is lawfully possessed
of the  Vessels free  from any  lien or  encumbrance whatsoever  other than
(a)liens  for current crew's wages,  (b)liens covered by  valid policies of
insurance held by the Shipowner and meeting the requirements of  Section 15
below,  and  (c)liens not  covered by  insurance  incurred in  the ordinary
course of business and not more  than thirty days past due as  permitted by
Section 12.1 of the Credit Agreement  (together with (a) and (b) "Permitted
Liens"), and will warrant  and defend the title and possession  thereto and
to every part  thereof for the benefit of the  Mortgagee against the claims
and demands of all persons whomsoever.

          Section 4.   The Shipowner  will cause this  Mortgage to be  duly
recorded in accordance with the  provisions of Chapter 3 of Title 22 of the
Liberian  Code  of  Laws  of 1956,    as  amended  (hereinafter  called the
"Liberian Maritime Law"), and will otherwise comply with and satisfy all of
the provisions  of the  Liberian Maritime  Law  in order  to establish  and
maintain this Mortgage as  a first preferred mortgage lien  thereunder upon
the Vessels and upon all renewals, replacements and improvements made in or
to the same for the amount of the Indebtedness hereby secured.<PAGE>



          Section 5.  The Shipowner will not cause or permit the Vessels to
be  operated in  any manner  contrary to  law, and  the Shipowner  will not
engage in any  unlawful trade or  violate any law  or carry any  cargo that
will expose the Vessels to penalty, forfeiture or capture, and will not do,
or  suffer or  permit to  be done,  anything which  can or  may injuriously
affect the registration  or enrollment of  the Vessels under  the laws  and
regulations  of the  Republic of  Liberia and  will at  all times  keep the
Vessels duly documented thereunder.

          Section 6.   The Shipowner will  pay and  discharge when due  and
payable, from time to  time, all taxes, assessments, governmental  charges,
fines  and  penalties  lawfully  imposed  on  the  Vessels  or  any  income
therefrom;  provided that  the Shipowner shall  not be required  to pay any
such  tax,  assessment  or charge  if  the  validity or  amount  thereof is
concurrently  contested in good faith by appropriate proceedings and if the
Shipowner  shall have set  aside on its  books reserves  in accordance with
generally  accepted accounting principles in the United States deemed by it
adequate  with  respect to  such tax,  assessment  or charge;  and provided
further, however, that  the Shipowner will pay or cause to be paid all such
taxes,  assessments   or  charges   forthwith  upon  the   commencement  of
proceedings to foreclose any lien which is attached as security therefor.

          Section 7.  Neither  the Shipowner, any charterer, the  Master of
any  Vessel nor  any other  person has  or shall have  any right,  power or
authority  to create, incur or permit to  be placed or imposed or continued
upon  any Vessel  any  lien  whatsoever other  than  for  crew's wages  and
salvage, the lien of this Mortgage and Permitted Liens.

          Section 8.  The Shipowner will place, and at all times and places
will retain,  a properly  certified copy  of this  Mortgage  on board  each
Vessel with  her papers  and  will cause  each such  certified  copy to  be
exhibited to any and all persons having business therewith which might give
rise to any lien thereon other than liens for crew's wages and salvage, and
to any representative of the Mortgagee; and will place and keep prominently
displayed in  the chart room  and in the  Master's cabin  of each Vessel  a
framed printed notice in plain type reading as follows:

                            "NOTICE OF MORTGAGE

          This Vessel is covered  by a First Preferred  Fleet Mortgage
     in favor of Bankers Trust Company, as Trustee, under authority of
     the Chapter 3 of  Title 22 of the Liberian Code of  Laws of 1956,
     as amended.  Under the terms of said Mortgage, neither the Owner,
     nor any  charterer or the  Master of  this Vessel  nor any  other
     person  has any  right, power  or authority  to create,  incur or
     permit to be imposed  upon this Vessel any other  lien whatsoever
     except  liens for crew's wages and salvage and Permitted Liens as
     defined in such Mortgage."

          Section 9.   Except for the  lien of this Mortgage  and Permitted
Liens,  the Shipowner will not suffer to be continued any lien, encumbrance
or charge on the Vessels, and in  due course and in any event within ninety
(90)  days after the same becomes due and  payable, will pay or cause to be
discharged,  or make adequate  provision for the  satisfaction or discharge<PAGE>



of, all claims  or demands, which, if not paid, may  give rise to any lien,
encumbrance  or charge  on the  Vessels, or  will cause  the Vessels  to be
released or discharged from any lien, encumbrance or charge therefor.

          Section 10.  If a libel  or complaint be filed against any Vessel
or any Vessel be otherwise  attached, levied upon or taken into  custody by
virtue  of  any legal  proceeding in  any  court, tribunal  or governmental
entity (de jure  or de facto) or if any Vessel  suffers damage in excess of
USD  500,000, the Shipowner will  promptly notify the  Mortgagee thereof by
telefax,  confirmed by  letter,  at  its  address,  as  specified  in  this
Mortgage, and within thirty (30) days will cause such Vessel to be released
and all  liens thereon other than  this Mortgage to be  discharged and will
promptly notify the Mortgagee thereof in the manner aforesaid.  

          Section 11.   The Shipowner will at all times and without cost or
expense to the Mortgagee maintain  and preserve, or cause to be  maintained
and preserved, the Vessels and all its equipment, outfit and appurtenances,
tight,  staunch, strong, in good condition, working order and repair and in
all respects seaworthy and fit for its intended service, and  will keep the
Vessels, or cause her to  be kept, in such condition as will entitle her to
the highest  classification and rating for vessels of the same age and type
in American Bureau  of Shipping,  or other classification  society of  like
standing approved by  the Mortgagee.  The Vessels  shall, and the Shipowner
covenants  that they  will, at all  times comply with  all applicable laws,
treaties  and conventions to which the Republic  of Liberia is a party, and
rules and  regulations issued thereunder,  and shall  have on board  as and
when required thereby valid certificates showing compliance therewith.  The
Shipowner will not make, or  permit to be made  any change in the  physical
characteristics  of any Vessel which  would, in the  reasonable judgment of
the Mortgagee, materially interfere with the suitability of such Vessel for
normal commercial offshore drilling  operations without first receiving the
written  approval thereof  by the  Mortgagee, which  approval shall  not be
unreasonably withheld.

          Section  12.  The Shipowner  will at all  reasonable times afford
the Mortgagee or its authorized representatives full and complete access to
the Vessels during normal business hours  for the purpose of inspecting the
Vessels  and their cargoes  and papers, and the  Shipowner will deliver for
inspection  copies of such contracts and documents relating to the Vessels,
whether  on board  or not, as  the Mortgagee  may reasonably  request.  All
reasonable   expenses  incurred   by  the   Mortgagee  or   its  authorized
representatives  in the exercise of its right of inspection hereunder shall
be promptly paid by the Shipowner.

          Section 13.   The Shipowner will not transfer  or change the flag
or  port of documentation of any Vessel  without the written consent of the
Mortgagee first had  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 to  any subsequent proposed
transfer or change of flag or port of documentation.  

          Section 14.  The Shipowner will not sell or mortgage, without the
written  consent of  the Mortgagee  first had  and obtained,  and any  such
written  consent to any one sale or mortgage shall not be construed to be a<PAGE>



waiver of this provision  with respect to  any subsequent proposed sale  or
mortgage.  Any such sale or mortgage of the Vessels shall be subject to the
provisions of this Mortgage and the lien hereof.

          Section 15.    Insurance.   (a) The  Shipowner will,  at its  own
expense, when  and so long as this Mortgage shall be outstanding, insure or
cause to  be insured  each Vessel  against  the risks  indicated below,  in
addition  to  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  Vessels  are  employed from  time  to  time  and  possessing
financial and operating  characteristics similar to those  of the Shipowner
("Similar Companies") in accordance with the  usual and customary practices
of Similar Companies, and  keep them collectively insured, in  lawful money
of the  United States, for  not less than  the greater of  (i) 125%  of the
Facility C Commitments and (ii) the amount of coverage that would be within
the range obtained  by Similar Companies  on such Vessels.   Such insurance
shall  be on the basis of "new for  old" with no deduction for depreciation
and shall have the following minimum limits:

          (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 interests of the Mortgagee and the
     Shipowner in an  amount not less than the  greater of (A) 125%  of the
     Facility  C Commitments or  (B) the amount  of coverage  that would be
     within  the range obtained by  Similar Companies on  such Vessels. The
     deductible or self-insured retention under the policy shall not exceed
     USD 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 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) USD  200,000,000.   Said policy  shall not
     include  a  deductible or  self-insured  retention  in excess  of  USD
     250,000  per  occurrence.    Such  insurance  shall include  a  cross-
     liability endorsement;

          (iii)  The Shipowner shall, at all times during which the Vessels
     are operating within the jurisdiction of the United States of America,
     maintain  or cause operators of  the Vessels to  maintain insurance or
     post  bond  or satisfy  the  requirements  for  evidence of  financial
     responsibility with respect to the Vessels to cover the actual cost of
     removal of discharged  oil for which the Shipowner or  the Vessels may
     be  held  strictly liable  (or held  liable due  to negligence  of the<PAGE>



     Shipowner or any other Person) under the Clean Water Act  of 1977, the
     Oil Pollution Act of 1990 or the Outer Continental Shelf Lands Act, or
     under any other federal or  state law which, in the future,  may apply
     to the Vessels  or to the Shipowner; and the  Shipowner shall maintain
     or cause operators of the  Vessels to maintain insurance or post  bond
     or satisfy  the requirements for 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
     Shipowner, the Vessels 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 USD 50,000,000  per occurrence)
     naming  the Shipowner 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
     Vessels with  respect to Vessels  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 Vessel,  in form  and
     substance satisfactory  to the Mortgagee, and  third party liabilities
     ("T.P.L.")  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  USD 250,000
     ("O.E.E.")/("T.P.L.") and shall be for the account of the Shipowner;

          (vi) Excess   seepage,   pollution,   clean-up  and   containment
     liability  coverage  in the  amount of  USD  50,000,000 in  respect of
     offshore operations in excess of and following the seepage, pollution,
     clean-up  and  containment  liability   coverage  recited  in  Section
     15(a)(v) above;

          (vii)   Subject  to the  provisions of  this subsection,  War and
     Political Risk insurance  naming the  Shipowner 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 Vessel operating in  an area deemed to be hostile by
     the Shipowner's underwriters or protection and indemnity club;

          (viii)  Upon prior written notice to the Shipowner, the Mortgagee
     may  obtain  mortgagee's  interest  insurance or  breach  of  warranty<PAGE>



     endorsement in favor of the Mortgagee with such underwriters and under
     forms of policies  approved by the Mortgagee in an  amount equal to at
     least  125%  of  the Facility  C  Commitments.    The Shipowner  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 Shipowner,  the Mortgagee
     may obtain  an Additional  Perils-Pollution  endorsement covering  the
     possible consequences of  pollution involving  the Vessels  including,
     without limitation, the risk of expropriation  or sequestration of any
     Vessel or the  imposition of a lien or encumbrance  of any kind having
     priority  over  this Mortgage.    The  Shipowner  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 Shipowner 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
Vessel,  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
15  and any  requirements which  the  Mortgagee may  have  notified to  the
Shipowner.   The Shipowner will use its best  efforts to cause such firm to
agree to  advise 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  Shipowner of which it  has knowledge and which  might invalidate or
render unenforceable, in whole or in part, any insurance on any Vessel.

     (c)  Unless the Mortgagee shall otherwise agree, all insurance for the
Vessels 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  15(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 days'  prior written notice  of such
cancellation to  the Mortgagee and an opportunity of paying any such unpaid
premium or call, (iii)  if possible, based on the Shipowner's best efforts,
contain a  provision that  the insurance  will not  be permitted  to lapse,
terminate  or  be materially  modified without  thirty days'  prior written
notice being given to the Mortgagee (except as to the insurance referred to
in Section 15(a)(ii) and  (v) above for which fourteen  days' prior written
notice shall be required and (iv) contain the agreement of the insurer that
any loss thereunder shall  be payable to the Mortgagee  notwithstanding any
action,  inaction or breach of representation or warranty by the Shipowner,<PAGE>



except to  the extent  provided by subsection  (d) hereof.   The  Shipowner
shall not change underwriters or clubs  as to any insurance for the Vessels
without prompt written notice to 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 and
thereafter  to the  Shipowner  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  Vessels with
respect to the protection and indemnity risks shall be paid directly to the
Shipowner 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 Vessels  involving any  damage  to any
Vessel 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 Shipowner shall have first fully repaired the damage or
paid all of the salvage or other charges, shall be paid to the Shipowner as
reimbursement therefor,  provided, no  amount  in excess  of USD  2,000,000
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  Vessel,  all
insurance  payments therefor shall be paid to  the Mortgagee and applied to
the Obligations in accordance with the  terms of Article II, Section 206 of
the Trust  Indenture.   The  Shipowner  shall  not declare  or  agree  with
underwriters  that any Vessel 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
Vessel, the Mortgagee shall  retain out of the insurance  payments received
on account  of such  loss  and held  by the  Mortgagee  in accordance  with
Section 305 of the Trust Indenture, any sum or sums that shall be or become
owing the Mortgagee under this Mortgage 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
Section 6.5 of the Credit Agreement.

          Section 16.  The Shipowner will reimburse the  Mortgagee promptly
with interest at the rate described in Section 5.3 of the Credit Agreement,
for  any and  all expenditures which  the Mortgagee  may from  time to time
make, lay  out  or  expend  in providing  such  protection  in  respect  of
insurance,  discharge  or  purchase  of liens,  taxes,  dues,  assessments,
governmental  charges,  fines  and  penalties  lawfully  imposed,  repairs,
attorney's  fees, necessary  translation  fees  for  documents  made  in  a
language  other than  English,  and  other  matters  as  the  Shipowner  is
obligated herein to provide, but fails to provide.  Such  obligation of the
Shipowner to  reimburse the Mortgagee  shall be an  additional indebtedness
due from the Shipowner, secured  by this Mortgage, and shall be  payable by
the Shipowner on demand.  The Mortgagee, though privileged to  do so, shall
be under no obligation to the  Shipowner to make any such expenditures, nor
shall  the  making thereof  relieve the  Shipowner of  any default  in that<PAGE>



respect.

          Section 17.  The Shipowner will fully perform any and all charter
parties  or drilling  contracts which  are, or  may be,  entered into  with
respect to the Vessels.

          Section  18.  The Shipowner further covenants and agrees with the
Mortgagee  that, so  long as  any part  of the Indebtedness  hereby secured
remains unpaid, there shall be  no change in the ownership of  the Vessels,
without the prior written consent of the Mortgagee.

          Section 19.   Requisition, Seizure or Forfeiture.   The Shipowner
covenants  and  agrees  that,  in   the  event  any  of  the   Vessels  are
requisitioned, seized or  forfeited by  any Governmental Agency  or by  any
group or body purporting to  act as such, and such requisition,  seizure or
forfeiture is not reversed and the Vessels released therefrom within thirty
(30) days,  the Shipowner will  cause all payments  made in respect  of any
such requisition, seizure or forfeiture  to be paid to the Mortgagee  to be
held and applied  by the Mortgagee for prepayment of the Facility C Note in
the manner set forth in Section 11 of Article II of this Mortgage; provided
however, that if any  such requisition, seizure or forfeiture  applies only
to the  use of the  Vessels, the provisions  of this  Section 19 shall  not
apply if and so long as the Shipowner shall not be in default in respect of
any  of its  obligations under this  Mortgage, the Credit  Agreement or the
Facility C Note secured hereby.

                                 ARTICLE II

                      Events of Default and Remedies.


          Section 1.   In case any one  or more of the events  described in
Section 13.1 of the Credit Agreement as "Events of Default" shall occur and
be continuing:

      THEN, upon the  occurrence and  continuance of any  Event of  Default
after the applicable  grace period, and  in each and  every such case,  the
Mortgagee shall  have the right in  accordance with the terms  of the Trust
Indenture to:

          (1)  Declare all  the then unpaid Indebtedness hereby  secured to
     be  due and payable immediately,  and upon such  declaration the same,
     including  interest  to date  of  declaration,  shall  become  and  be
     immediately due and payable;

          (2)  Exercise all of  the rights and remedies in  foreclosure and
     otherwise given  to mortgagees  by the  provisions of  the law of  the
     Republic of Liberia or of any  other jurisdiction where any Vessel may
     be found;

          (3)  Bring suit at law, in  equity or in admiralty, as it may  be
     advised by counsel,  to recover judgment  for the Indebtedness  hereby
     secured,  and collect  the same  out of  any and  all property  of the
     Shipowner whether covered by this Mortgage or otherwise;<PAGE>



          (4)  Take and enter into possession of the Vessels,  at any time,
     wherever  the same  may be,  without legal  process and  without being
     responsible  for loss or damage, and the  Shipowner or other person in
     possession forthwith upon demand  of the Mortgagee shall  surrender to
     the Mortgagee possession of the Vessels and the Mortgagee may, without
     being  responsible for loss or  damage, hold, lay  up, lease, charter,
     operate  or otherwise  use such  Vessels for such  time and  upon such
     terms as it may deem to be for its best advantage, and demand, collect
     and  retain all  hire, freights,  earnings, issues,  revenues, income,
     profits, return premiums, salvage  awards or recoveries, recoveries in
     general average, and all other sums due or to become due in respect of
     such Vessels or in  respect of any  insurance thereon from any  person
     whomsoever,  accounting only for the net profits, if any, arising from
     such use of the Vessels and charging upon all receipts from the use of
     the Vessels or from the sale  thereof by court proceedings or pursuant
     to  Subsection  (5)  next  following, all  costs,  expenses,  charges,
     damages  or losses  by reason  of such  use; and  if at  any time  the
     Mortgagee shall  avail itself of the right herein given it to take the
     Vessels, the Mortgagee shall have the right to dock the Vessels, for a
     reasonable time at  any dock, pier or other premises  of the Shipowner
     without charge, or  to dock  her at any  other place  at the cost  and
     expense of the Shipowner;

          (5)  Without legal process and  without being responsible for any
     loss  or damage, sell any or all of  the Vessels at such places and at
     such time  as the  Mortgagee may   specify and  in such manner  as the
     Mortgagee may deem advisable free  from any claim by the Shipowner  in
     admiralty, in equity, at law or by statute, after first  giving notice
     of the time and  place of any such sale with a  general description of
     the property in the following manner:

          (a)  by  publishing such  notice  for ten  consecutive days  in a
               daily newspaper of general circulation  published in Dallas,
               Texas;

          (b)  if the place  of sale  should not be  in Dallas, Texas  then
               also  by  publication  of  a  similar  notice  in  a   daily
               newspaper, if any, published at the place of sale; and

          (c)  by mailing a similar  notice to the Shipowner on  the day of
               first publication.

The  Mortgagee may adjourn any such sale  from time to time by announcement
at  the time and place appointed for such  sale or for such adjourned sale,
and without further  notice or publication the Mortgagee  may make any such
sale at the time  and place to which the  same shall be so adjourned.   Any
such  sale  may be  conducted without  bringing  the Vessels  to  the place
designated for such sale and in such manner as Mortgagee may deem to be for
its best advantage.

          Section  2.   Any  sale of  a Vessel  made  in pursuance  of this
Mortgage, whether under  the power of sale  hereby granted or  any judicial
proceedings, shall operate  to divest all right, title and  interest of any
nature whatsoever of the  Shipowner therein and thereto, and shall  bar the<PAGE>



Shipowner, its successors and assigns, and all persons claiming by, through
or under them.  No purchaser  shall be bound to inquire whether  notice has
been  given, or whether any default has occurred, or as to the propriety of
the sale, or as to the application of the proceeds thereof.  In case of any
such sale, the Mortgagee, if it is the purchaser, shall be entitled for the
purpose of  making settlement or payment for  the property purchased to use
and  apply the  Indebtedness  hereby secured  in  order that  there  may be
credited  against  the amount  remaining due  and  unpaid thereon  the sums
payable out  of  the net  proceeds  of such  sale  to the  Mortgagee  after
allowing for the costs and expense of sale and other charges; and thereupon
such  purchaser shall be credited, on  account of such purchase price, with
the  net proceeds that  shall have been  so credited upon  the Indebtedness
hereby secured.   At any such judicial sale, the  Mortgagee may bid for and
purchase such property and upon compliance with the terms of sale may hold,
retain  and  dispose  of   such  property  without  further  accountability
therefor.

          Section 3.  The Mortgagee is hereby appointed attorney-in-fact of
the Shipowner, to  execute and deliver to  any purchaser aforesaid,  and is
hereby vested with  full power and  authority to make, in  the name and  in
behalf of the Shipowner,  a good conveyance of the  title to the Vessel  so
sold.   In  the event  of any sale  of the  Vessel, under  any power herein
contained,  the  Shipowner will,  if and  when  required by  the Mortgagee,
execute such form of conveyance  of the Vessel as the Mortgagee  may direct
or approve.

          Section 4.  The Mortgagee is hereby appointed attorney-in-fact of
the Shipowner upon the happening  of any event of  default, in the name  of
the Shipowner to demand,  collect, receive, compromise and sue  for, so far
as may be  permitted by law, all freight, hire, earnings, issues, revenues,
income and  profits of the  Vessels and  all amounts due  from underwriters
under any insurance  thereon as payment of losses or  as return premiums or
otherwise,  salvage awards and recoveries, recoveries in general average or
otherwise, and  all other  sums due or  to become  due at  the time of  the
happening of any event of  default in respect of the Vessels, or in respect
of any insurance thereon, from any person whomsoever, and to make, give and
execute  in the name of  the Shipowner acquittances,  receipts, releases or
other  discharges for the  same, whether  under seal  or otherwise,  and to
endorse and  accept in the name of the Shipowner all checks, notes, drafts,
warrants, agreements and other  instruments in writing with respect  to the
foregoing.

          Section 5.   Whenever any right to  enter and take possession  of
the  Vessels accrues  to  the Mortgagee,  it may  require the  Shipowner to
deliver, and  the Shipowner shall on  demand, at its own  cost and expense,
deliver  to the Mortgagee the Vessels as  demanded.  If the Mortgagee shall
be entitled to  take any legal proceedings to enforce  any right under this
Mortgage,  the Mortgagee  shall be  entitled as  a matter  of right  to the
appointment of  a  receiver of  the  Vessels  and of  the  freights,  hire,
earnings, issues, revenues,  income and profits  due or to  become due  and
arising from the operation thereof.

          Section 6.   The Shipowner authorizes and  empowers the Mortgagee
or  its appointees or any of  them to appear in the  name of the Shipowner,
its  successors and assigns, in  any court of any country  or nation of the
world where a suit is pending against a Vessel  because of or on account of
any alleged  lien against the  Vessel from  which the Vessel  has not  been<PAGE>



released and to take  such proceedings as to them  or any of them  may seem
proper towards  the defense of such  suit and the purchase  or discharge of
such lien, and all expenditures made or incurred by them or any of them for
the purpose of  such defense or purchase  or discharge shall be  a debt due
from the Shipowner, its successors and assigns, to the Mortgagee, and shall
be secured by the lien of this Mortgage in like manner and extent as if the
amount and description thereof were written herein.

          Section  7.  The Shipowner  covenants that upon  the happening of
any one  or more of the  events of default,  the Shipowner will pay  to the
Mortgagee  the whole amount due and  payable in respect of the Indebtedness
hereby  secured;  and in  case the  Shipowner shall  fail  to pay  the same
forthwith,  the Mortgagee  shall be  entitled to  recover judgment  for the
whole amount so due and unpaid, together with such further amounts as shall
be sufficient  to  cover the  reasonable  compensation to  the  Mortgagee's
agents,  attorneys and  counsel and  any necessary  advances,  expenses and
liabilities made or incurred by it  hereunder.  All moneys collected by the
Mortgagee under  this  Section  7 shall  be  applied by  the  Mortgagee  in
accordance  with the provisions of Section 11 of this Article II.

          Section 8.  Each and  every power and remedy herein given  to the
Mortgagee shall be cumulative and shall be in addition to every other power
and remedy herein given or now or hereafter existing at  law, in equity, in
admiralty or by statute, and each and every power and remedy whether herein
given or otherwise existing may be exercised from time to time and as often
and in  such order  as may be  deemed expedient  by the Mortgagee,  and the
exercise or the beginning  of the exercise of any power or remedy shall not
be construed to be  a waiver of the right  to exercise at the same  time or
thereafter  any  other power  or  remedy.   No  delay  or  omission by  the
Mortgagee in the  exercise of any right or power or in the pursuance of any
remedy accruing  upon any default  as above  defined shall impair  any such
right, power or remedy or be construed to be a waiver of any such  event of
default or to be an  acquiescence therein; nor shall the acceptance  by the
Mortgagee  of  any security  or of  any  payment of  or on  account  of the
Indebtedness hereby secured maturing after  any event of default or  of any
payment on account  of any past default be construed to  be a waiver of any
right to take advantage of any future event of default or of any past event
of default not completely cured thereby.  No consent, waiver or approval of
the Mortgagee  shall be deemed to  be effective unless in  writing and duly
signed by authorized signatories of the Mortgagee.

          Section 9.  If at any time after an event of default and prior to
the actual sale of a Vessel by the Mortgagee or prior to any enforcement or
foreclosure proceedings the Shipowner offers  completely to cure all events
of default and to pay  all expenses, advances and damages to  the Mortgagee
consequent  on such  events of default,  with interest with  respect to the
Shipowner's obligations as provided  herein or in the Guaranty as set forth
therein, then the  Mortgagee may accept such offer and  payment and restore
the Shipowner to its former position, but such action, if  taken, shall not
affect  any subsequent  event of  default or  impair any  rights consequent
thereon.<PAGE>



          Section  10.   In  case the  Mortgagee  shall have  proceeded  to
enforce  any right,  power or  remedy under  this Mortgage  by foreclosure,
entry  or otherwise, and such  proceedings shall have  been discontinued or
abandoned for  any reason or  shall have  been determined adversely  to the
Mortgagee,  then and in  every such  case the  Shipowner and  the Mortgagee
shall  be  restored to  their former  positions  and rights  hereunder with
respect to  the  property  subjects or  intended  to be  subjects  to  this
Mortgage,  and all  rights,  remedies and  powers  of the  Mortgagee  shall
continue as if no such proceedings had been taken.

          Section 11.  The  proceeds of any  sale of a  Vessel and the  net
earnings of any  charter operation or other  use of the Vessel  and any and
all  other moneys received by the Mortgagee  pursuant to or under the terms
of this Mortgage or  in any proceedings hereunder, the application of which
has not elsewhere herein  been specifically provided for, shall  be applied
as follows:

          First:  To the payment of all expenses and charges, including the
     expenses of any sale,  the expenses of any retaking,  attorney's fees,
     court costs,  and any other expenses  or advances made or  incurred by
     the Mortgagee  in the protection of its rights or the pursuance of its
     remedies hereunder;

          Second:    To the  payment  of  the  Indebtedness hereby  secured
     pursuant  to Section 6.4 of the Credit  Agreement, whether due or not,
     including interest thereon to the date of such payment; and

          Third:    To  the Shipowner  or  to  whomsoever  may be  entitled
     thereto.

          Section 12.    Until one or more of the  Events of Default herein
above  described  shall happen,  the Shipowner  (a)  shall be  suffered and
permitted to retain actual possession and use of the Vessels; (b)may at any
time  alter, repair, change or  re-equip the Vessels,  subject, however, to
the provisions  of Section  11 of  Article I hereof  and (c)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 Vessels, provided, however that
during any consecutive  twelve (12)  month period, the  Shipowner may  make
such disposition  from the  Vessels only  up to an  aggregate value  of USD
2,000,000 and provided further that such limitation shall not apply if  the
Shipowner first or  simultaneously replaces the  same by 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 appurtenance with  those of substantially
equal value to the  Shipowner, which shall forthwith become  subject to the
lien of this Mortgage as a preferred mortgage thereon.<PAGE>




          Section 13.    (a)  If any  provision of this Mortgage should  be
deemed invalid or shall  be deemed to affect adversely the preferred status
of this Mortgage under any applicable law, such provision shall cease to be
a part of this  Mortgage without affecting the remaining  provisions, which
shall remain in full force and effect.

          (b)  In the event that the Guaranty, the Credit Agreement or this
Mortgage or any of the documents or instruments which may from time to time
be delivered hereunder  or thereunder  or any provision  hereof or  thereof
shall be  deemed invalidated by present  or future law of any  nation or by
decision  of any  court, or  if any  third party  shall fail  or refuse  to
recognize  any of the powers granted to  the Mortgagee hereunder when it is
sought  to exercise  them,  this  shall  not  affect  the  validity  and/or
enforceability  of all  or  any other  parts of  the  Guaranty, the  Credit
Agreement or the Mortgage or such documents or instruments and, in any such
case, the  Shipowner covenants and agrees that,  on demand, it will execute
and deliver  such  other and  further  agreements and/or  documents  and/or
instruments and do such things as the Mortgagee in its  sole discretion may
deem to be  necessary to carry  out the true intent  of this Mortgage,  the
Guaranty and the Credit Agreement. 

          (c)   Anything  herein  to the  contrary  notwithstanding, it  is
intended  that  nothing herein  shall waive  the  preferred status  of this
Mortgage and  that, if  any provision  or portion  thereof herein shall  be
construed  to  waive  the preferred  status  of  this  Mortgage, then  such
provision to such extent shall be void and of no effect.


                                ARTICLE III

                             Sundry Provisions.


          Section  1.   All of  the covenants,  promises, stipulations  and
agreements  of  the Shipowner  in this  Mortgage  contained shall  bind the
Shipowner and its successors and assigns and shall inure to  the benefit of
the Mortgagee and  its respective successors and assigns.   In the event of
any assignment or transfer of this Mortgage, the term "Mortgagee",  as used
in this Mortgage, shall be deemed to mean any such assignee or transferee.

          Section  2.   Wherever and  whenever herein  any right,  power or
authority  is  granted or  given  to the  Mortgagee, such  right,  power or
authority  may be exercised in all cases by  the Mortgagee or such agent or
agents as it may  appoint, and the act or acts of such agent or agents when
taken shall constitute the act of the Mortgagee hereunder.

          Section  3.   This  Mortgage may  be executed  in  any number  of
counterparts, each of  which shall  be an original,  but such  counterparts
shall together constitute but one and the same instrument.<PAGE>



          Section 4.  The Shipowners shall give the Mortgagee notice of any
Event  of Default  hereunder and shall  provide all other  notices or other
communication to be  given pursuant  hereto in the  manner provided in  the
Credit Agreement and addressed:

     If to the Mortgagee to

          Bankers Trust Company, as Trustee
          Four Albany Street, Fourth Floor
          New York, New York  10006
          United States of America
          Telefax No. (212) 250-6392
          Attention: Corporate Trust and Agency Group

     And if to the Shipowner to

          ENSCO Offshore Company II
          2700 Fountain Place
          1445 Ross Avenue
          Dallas, Texas  75202
          Telefax No. (214) 855-0300
          Attention: Chief Financial Officer 

or  at such  other  address as  either party  may  notify to  the other  in
writing.

          Section  5.  For  the purpose  of recording  this Mortgage  as is
required  under Liberian  Maritime  Law, the  total  amount of  this  First
Preferred  Fleet Mortgage  is SIXTY-FIVE  MILLION AND 00/100  UNITED STATES
DOLLARS  (USD  65,000,000.00),  and  interest thereon  and  performance  of
mortgage covenants.  The maturity date is on Demand.  There  is no separate
discharge amount.

          IN WITNESS WHEREOF, the Shipowner has caused this First Preferred
Fleet Mortgage to be duly executed the day and year first above written.


                              ENSCO OFFSHORE COMPANY II
                         

                              By:       /s/ ROBERT O. ISAAC
                                        -----------------------------------
                              Name:         Robert O. Isaac
                              Title:        Assistant Secretary<PAGE>




STATE OF TEXAS      )
: ss.:
COUNTY OF HARRIS    )


          On this 13th  day of  June, 1996, before  me personally  appeared
Robert O. Isaac, to me known,  who, being by me duly sworn, did  depose and
say that he resides  at 2700 Fountain Place Dallas,  Texas; that he is  the
Assistant Secretary of ENSCO Offshore  Company II, a Delaware  corporation,
and the corporation described  in the foregoing instrument; that  he signed
his name thereto by order  of the authority from the Board of  Directors of
said corporation and that the  foregoing instrument is the act and  deed of
the corporation.



                              /s/ S. N. Nixon
                              ------------------------------
                                      Notary Public


For use in
the Republic of Liberia



                              [----------------------------------------]
                              [                                        ]
                              [Notary             S. N. NIXON          ]
                              [ Seal      Notary Public, State of Texas]
                              [             Commission Expires 7-18-99 ]
                              [                                        ]
                              [----------------------------------------]<PAGE>

<TABLE> <S> <C>

<ARTICLE>  5



                                                        EXHIBIT NO. 27


<LEGEND>
This schedule contains summary financial information extracted from the
June 30, 1996 financial statements and is qualified in its entirety by
reference to such financial statements.
</LEGEND>

     
<MULTIPLIER>                                          1,000
<PERIOD-TYPE>                                         6-MOS
<FISCAL-YEAR-END>                                     DEC-31-1996
<PERIOD-END>                                          JUN-30-1996

<CASH>                                                $   76,743
<SECURITIES>                                                   0
<RECEIVABLES>                                             98,048
<ALLOWANCES>                                               1,015 
<INVENTORY>                                                4,516
<CURRENT-ASSETS>                                         200,913
<PP&E>                                                 1,153,187
<DEPRECIATION>                                           218,982 
<TOTAL-ASSETS>                                         1,241,862
<CURRENT-LIABILITIES>                                    103,164
<BONDS>                                                  272,988
<COMMON>                                                   7,706
                                          0
                                                    0
<OTHER-SE>                                               779,406
<TOTAL-LIABILITY-AND-EQUITY>                           1,241,862
<SALES>                                                        0
<TOTAL-REVENUES>                                         181,795
<CGS>                                                          0 
<TOTAL-COSTS>                                             92,751
<OTHER-EXPENSES>                                          39,419
<LOSS-PROVISION>                                             454 
<INTEREST-EXPENSE>                                         8,436
<INCOME-PRETAX>                                           51,245
<INCOME-TAX>                                              13,616
<INCOME-CONTINUING>                                       36,271
<DISCONTINUED>                                                 0
<EXTRAORDINARY>                                                0
<CHANGES>                                                      0
<NET-INCOME>                                              36,271
<EPS-PRIMARY>                                               0.59
<EPS-DILUTED>                                               0.59<PAGE>

</TABLE>


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