NAVIGATORS GROUP INC
10-K405, 1999-03-31
FIRE, MARINE & CASUALTY INSURANCE
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                   ----------

                                    FORM 10-K

[X]            ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF
               THE SECURITIES EXCHANGE ACT OF 1934 [FEE REQUIRED]
                   FOR THE FISCAL YEAR ENDED DECEMBER 31, 1998

                                       OR

|_|         TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
                SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]
                   For the transition period from ___ to ____

                           COMMISSION FILE NO. 0-15886

                           THE NAVIGATORS GROUP, INC.
             (Exact name of registrant as specified in its charter)

            DELAWARE                                      13-3138397
 (State or other jurisdiction of            (I.R.S. employer identification no.)
 incorporation or organization)

          123 WILLIAM STREET, NEW YORK, NEW YORK               10038
         (Address of principal executive offices)            (Zip code)

Registrant's telephone number, including area code:  (212) 349-1600

Securities registered pursuant to Section 12(b) of the Act:  NONE

Securities registered pursuant to Section 12(g) of the Act:  COMMON STOCK, 
                                                             $.10 PAR VALUE
                                                             (Title of Class)

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 12 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 [_]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K [X]

Aggregate market value of voting stock held by non-affiliates as of March 22,
1999 - $61,735,000 Common shares outstanding March 22, 1999 - 8,437,470

                       DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant's 1999 Proxy Statement are incorporated by reference
in Part III, Items 10, 11, 12 and 13 of this Form 10-K.

<PAGE>   2

FORWARD-LOOKING STATEMENTS

     Some of the statements in this annual report on form 10-K are not
historical facts and are "forward-looking statements" (as defined in the Private
Securities Litigation Act of 1995). These statements use words such as
"believes," "expects," "intends," "may," "will," "should," "anticipates" (or the
negative forms of those words) and describe our strategies, goals, expectations
of future results and other forward-looking information. We derive
forward-looking information from information which we currently have and
numerous assumptions which we make. We cannot assure that results which we
anticipate will be achieved, since results may differ materially because of both
known and unknown risks and uncertainties which we face. Factors which could
cause actual results to differ materially from our forward looking statements
include, but are not limited to:

o    the effects of domestic and foreign economic conditions and conditions
     which affect the market for property and casualty insurance;
o    laws, rules and regulations which apply to insurance companies;
o    the effects of competition from other insurers and the trend toward
     self-insurance;
o    risks which we face in entering new markets and diversifying the products
     and services we offer;
o    weather-related events and other catastrophes;
o    Year 2000 readiness; and
o    other risks which we identify in future filings with the Securities and
     Exchange Commission, although we do not promise to update forward-looking
     statements to reflect actual results or changes in assumptions or other
     factors that could affect these statements.

PART I

ITEM 1. BUSINESS

GENERAL

     The accompanying consolidated financial statements consisting of the
accounts of The Navigators Group, Inc., a Delaware holding company, and its
fourteen wholly owned subsidiaries, are prepared on the basis of generally
accepted accounting principles ("GAAP"). Unless the context otherwise requires,
the term "Company" as used herein means The Navigators Group, Inc. and its
subsidiaries. All significant intercompany transactions and balances are
eliminated.

     The Company's two insurance subsidiaries are Navigators Insurance Company
("Navigators Insurance") and NIC Insurance Company ("NIC"). Navigators Insurance
is the Company's largest insurance subsidiary and has been active since 1983. It
specializes principally in underwriting marine insurance. NIC, a wholly owned
subsidiary of Navigators Insurance, began operations in 1990. It underwrites a
small book of surplus lines insurance in certain states and, pursuant to an
intercompany reinsurance pooling agreement, cedes 100% of its gross direct
writings from this business to Navigators Insurance in exchange for assuming 10%
of Navigators Insurance's net premium. Navigators Insurance and NIC are
collectively referred to herein as the "Insurance Companies".

     Navigators Corporate Underwriters Limited ("NCUL"), a subsidiary formed in
the fourth quarter of 1996, is admitted to underwrite marine and related lines
of business at Lloyd's of London ("Lloyd's") as a corporate member with limited
liability.

     Six of the Company's subsidiaries are underwriting management companies:
Somerset Marine, Inc., Somerset Insurance Services of Texas, Inc., Somerset
Insurance Services of California, Inc., Somerset Insurance Services of
Washington, Inc., Somerset Marine (UK) Limited ("Somerset UK") and Somerset Asia
Pacific Pty Limited ("Somerset Asia") (collectively, the "Somerset Companies").
The Somerset Companies produce, manage and underwrite insurance and reinsurance
for Navigators Insurance, NIC and 


                                       1
<PAGE>   3

six unaffiliated insurance companies.

     Somerset Asia was formed in the third quarter of 1996 and operates from an
office in Sydney, Australia. This office concentrated on marine, onshore energy,
engineering and construction business primarily in Indonesia, Thailand,
Malaysia, Taiwan, China and Vietnam. Somerset Asia began writing business in
early 1997 and is supported by Somerset Services Pte Limited which provides loss
prevention consultancy to Somerset Asia's assureds and producers. Somerset
Services Pte Limited, a wholly owned subsidiary of Somerset Asia, was formed in
September 1997 and is located in Singapore. In 1999, Somerset Asia may write a
small amount of marine business only. The onshore energy, engineering and
construction business will be underwritten through the Company's Lloyd's
facilities.

     Somerset UK, formed in the fourth quarter of 1996, concentrated on marine,
aviation, onshore energy, engineering and construction business. Navigators
Insurance was authorized to operate an United Kingdom ("UK") Branch on October
22, 1997. Somerset UK began producing business in the fourth quarter of 1997 for
the UK Branch of Navigators Insurance (the "UK Branch"). In 1999, Somerset UK
will produce only marine business for the UK Branch. The UK Branch will
participate in the onshore energy, engineering and construction business to be
written through the Company's Lloyd's facilities in 1999.

     Navigators Holdings (UK) Limited was formed on September 15, 1997 as a
holding company for the Company's UK subsidiaries.

     During 1998, the Company merged Somerset of Georgia, Inc. into Somerset
Marine, Inc. The Company also owns Somerset Marine Aviation Property Managers,
Inc., an inactive subsidiary.

     The Company's revenue is primarily comprised of premiums, commissions and
investment income. The Insurance Companies derive the majority of their business
from the Somerset Companies through either business written specifically for the
Insurance Companies or through Navigators Insurance's participation in insurance
pools managed by the Somerset Companies. The insurance business and operations
of the Insurance Companies are managed by Somerset Marine, Inc.

     The Somerset Companies specialized in writing marine, aviation, onshore
energy, engineering and construction business. The marine business is written
through a syndicate of insurance companies, Navigators Insurance having the
largest participation in the syndicate. The Somerset Companies derive their
revenue from commissions, service fees and cost reimbursement arrangements from
their parent company, Navigators Insurance, NIC and the unaffiliated insurers.
Commissions are earned both on a fixed percentage of premiums and on
underwriting profits on business placed with the participating insurance
companies within the syndicate. Property and casualty insurance premiums
historically have been cyclical in nature and, accordingly, during a "hard
market" demand for property and casualty insurance exceeds supply, or capacity,
and as a result, premiums and commissions may increase. On the downturn of the
property and casualty cycle, supply exceeds demand, and as a result, premiums
and commissions may decrease. Other than a small amount of war and satellite
business, the Company withdrew from the aviation business in October 1998 due to
inadequate pricing. In 1999, the Company will write its engineering and
construction business through the Company's facilities at Lloyd's instead of
through the Somerset Companies. The Company's onshore energy business will be
written primarily through the Company's facilities at Lloyd's, and to a lesser
degree, through the Somerset Companies. The UK Branch will participate in the
business written through Lloyd's.

     In January 1998, the Company purchased 100% of Mander, Thomas & Cooper
(Underwriting Agencies) Limited ("MTC"), a Lloyd's of London marine underwriting
managing agency and its wholly owned subsidiary, Millennium Underwriting Limited
("Millennium"). The purchase price consists of initial cash payments plus future
performance contingent consideration. The purchase was funded through a bank
loan and working capital. The 


                                       2
<PAGE>   4

acquisition has been accounted for under the purchase method of accounting. The
purchase price was approximately $5,000,000. In addition, the purchase
agreement requires payment of additional consideration based on the performance
of Lloyd's Syndicate 1221 managed by MTC. Goodwill of approximately $4,000,000
has been recorded to date in connection with the transaction. The goodwill is 
being amortized over 20 years. Additional goodwill may be recorded in future
years when the amount of the future performance contingencies are determinable.


LINES OF BUSINESS

     The business written by Navigators Insurance was primarily marine,
aviation, onshore energy, engineering and construction insurance. As
underwritten by Navigators Insurance, marine insurance includes hull, energy,
liability and cargo; aviation insurance includes hull and liability on
commercial aircraft and on aircraft manufacturers; onshore energy primarily
covers property damage and machinery breakdown; and engineering and construction
primarily covers the construction project including the machinery, equipment and
loss of use due to delays, with an emphasis on the oil, petrochemical and
utility sectors. As discussed above, the Company has generally withdrawn from
the aviation market. In 1999, the Company will write onshore energy,
engineering and construction business through its facilities at Lloyd's. The
Company also writes general liability insurance for contractors through one
managing general agent. See the table set forth in "Management's Discussion and
Analysis - Results of Operations - Revenues" for the Company's gross written
premium by line of business and net written premium in the aggregate for the
periods indicated.
                           

                                       3
<PAGE>   5

MARINE INSURANCE

     Navigators Insurance obtains marine business through participation in the
marine pool managed by the Somerset Companies. The composition of the pool and
the level of participation of each member changes from time to time. Navigators
Insurance's net participation in the marine pool was 60% in 1998, 48% in 1997
and 41% in 1996.

     The Somerset Companies in 1998, 1997 and 1996 received commissions equal to
7 1/2% of the gross premium earned on marine insurance. They also are entitled
to receive a 20% profit commission on net underwriting profits.

     The Lloyd's marine premium is generated as the result of capacity provided
to Syndicate 1221 by NCUL and Millennium in 1998 and capacity provided to
Syndicate 1221 and an unaffiliated syndicate by NCUL in 1997. The premiums,
losses and expenses from the Lloyd's marine syndicates are included in the
Company's financials but are not included in the Insurance Companies' results
since NCUL and Millennium are not part of the Insurance Companies' operations.

AVIATION INSURANCE

     The Company's aviation business had been written by Navigators Insurance
until October 1998 when Navigators Insurance decided to no longer write aviation
business due to inadequate pricing, other than a small amount of war and
satellite business.

INLAND MARINE INSURANCE

     As of June 1997, the Company no longer writes inland marine insurance other
than onshore energy. The Somerset Companies produced the inland marine business
written by the Insurance Companies.

ONSHORE ENERGY

     In 1996, Navigators Insurance began to underwrite onshore energy insurance
which principally focuses on the oil and gas, chemical and petrochemical, and
power generation industries with coverages primarily for property damage and
machinery breakdown. The onshore energy business will be written primarily
through the Company's facilities at Lloyd's, and to a lesser degree, possibly
through the Somerset Companies.

ENGINEERING AND CONSTRUCTION

     In 1997, Navigators Insurance began writing engineering and construction
business consisting of coverage for the construction projects including the
machinery, equipment and loss of use due to delays. In 1999, the engineering and
construction business will all be written through the Company's facilities at
Lloyd's.

SPECIALTY REINSURANCE AND PROGRAM INSURANCE

     Navigators Insurance's reinsurance business was produced and managed by one
of the Somerset Companies. This reinsurance premium consisted primarily of
excess of loss and quota share property, surety, and other specialty reinsurance
lines. Navigators Insurance did not renew this reinsurance business after 1995
except for a few specialty treaties. The program insurance, which began in 1995,
was reduced 


                                       4
<PAGE>   6

in 1997 and currently consists of one managing general agent writing primarily
general liability for contractors.

REINSURANCE CEDED

     The Company utilizes reinsurance principally to reduce its net liability on
individual risks, to protect against catastrophic losses, to maintain desired
ratios of net premium written to statutory surplus and to stabilize loss ratios.

     The ceding of reinsurance does not discharge the original insurer from its
primary liability to the policyholder. The ceding company is required to pay the
losses even if the assuming company fails to meet its obligations under the
reinsurance agreement.

     Reinsurance is generally written under treaty contracts in which coverage
is either on a proportional basis, where the reinsurer shares proportionately in
premiums and losses, or on an excess of loss basis, where only losses above a
fixed amount are reinsured.

     The Company is protected by various treaty and facultative reinsurance
agreements. The reinsurance is diversified by reinsuring with a number of
different reinsurers, principally in the United States and European reinsurance
markets. This coverage is placed on behalf of the Company's insurance operations
by a number of different reinsurance intermediaries, each of which is employed
because of its expertise in placing a particular type of coverage. All such
intermediaries are compensated by the reinsurers.

     The Company's reinsurance security committees continually monitors the
financial strength of its reinsurers and the amounts of reinsurance receivables
from those reinsurers. To the extent that it is determined that the ultimate
amount collectible is less than the amount recorded on a receivable, a reserve
is established. At December 31, 1998 and 1997, the Company had an allowance for
uncollectible reinsurance of $800,000.

RESERVES

     Insurance companies and Lloyd's syndicates are required to maintain
reserves for unpaid losses and unpaid loss adjustment expenses ("LAE") for all
lines of business. These reserves are intended to cover the probable ultimate
cost of settling all losses incurred and unpaid, including those incurred but
not reported. The determination of reserves for losses and LAE for insurance
companies such as Navigators Insurance and Lloyd's corporate names such as NCUL
and Millennium is dependent upon the receipt of information from the pools and
syndicates in which such companies participate. Generally, there is a lag
between the time premiums are written and related losses and LAE are incurred,
and the time such events are reported to the pools and syndicates and,
subsequently, to Navigators Insurance, NCUL and Millennium.

     The Insurance Companies and Lloyd's syndicates establish reserves for
reported claims when they first receive notice of the claim. In the case of
direct business and assumed excess of loss reinsurance, reserves are established
on a case-by-case basis by evaluating several factors, including the type of
risk involved, knowledge of the circumstances surrounding such claim, severity
of injury or damage, the potential for ultimate exposure, experience with the
insured and the broker on the line of business, and the policy provisions
relating to the type of claim. Reserves for incurred but not reported losses for
the Company's insurance operations are determined in part on the basis of
statistical information and in part on industry experience.


                                       5
<PAGE>   7

     Loss reserves are estimates of what the insurer or reinsurer expects to pay
on claims, based on facts and circumstances then known, and it is possible that
the ultimate liability may exceed or be less than such estimates. Such estimates
are based, among other things, on predictions of future events and estimates of
future trends in claim severity and frequency. During the loss settlement
period, which, in some cases, may last several years, additional facts regarding
individual claims may become known and, accordingly, it often becomes necessary
to refine and adjust the estimates of liability on a claim upward or downward.
Such estimates are regularly reviewed and updated and any resulting adjustments
are included in income currently. Even then, the ultimate liability may exceed 
or be less than the revised estimates. The reserving process is intended to 
provide implicit recognition of the impact of inflation and other factors 
affecting loss payments by taking into account changes in historical payment 
patterns and perceived probable trends. There is generally no precise method 
for the subsequent evaluation of the adequacy of the consideration given to 
inflation, or to any other specific factor, because the eventual deficiency or 
redundancy of reserves is affected by many factors, some of which are 
interdependent.

     The Company records those premiums which are reported to it through the end
of each calendar year. A substantial portion of the premiums are from
international business. In this business, there is a significant time lag from
the time the policy is bound to the receipt of the policy. Premiums relating to
a calendar year may be reported in subsequent years. To the extent a lag exists
in the reporting of, and the Company's accounting for, such premiums, a
comparable lag occurs in the recording of related incurred but not reported
losses and LAE which properly matches recorded revenue with related expenses.

     The Company does not discount any of its reserves. The following tables
present an analysis of losses and LAE.

<TABLE>
<CAPTION>
                                                                                              Year Ended December 31,
                                                                                ---------------------------------------------------
                                                                                  1998                  1997                 1996
                                                                                ---------            ---------            ---------
                                                                                                  (In thousands)
<S>                                                                             <C>                  <C>                  <C>      
Net reserves for losses and LAE at
      beginning of year .............................................           $ 139,841            $ 132,558            $ 138,761
                                                                                ---------            ---------            ---------
Provision for losses and LAE for
     claims occurring in the current year ...........................              46,050               53,654               51,429

Lloyd's portfolio transfer - reinsurance to close ...................              19,655                   --                   --

Increase (decrease) in estimated losses and
     LAE for claims occurring in prior years ........................              (3,383)              (1,034)              (2,452)
                                                                                ---------            ---------            ---------

Incurred losses and LAE .............................................              62,322               52,620               48,977
                                                                                ---------            ---------            ---------
Losses and LAE payments for claims
     occurring during:
     Current year ...................................................              (9,848)             (12,921)             (15,439)
     Prior years ....................................................             (41,798)             (32,416)             (39,741)
                                                                                ---------            ---------            ---------
Losses and LAE payments .............................................             (51,646)             (45,337)             (55,180)
                                                                                ---------            ---------            ---------

Net reserves for losses and LAE at end of year ......................             150,517              139,841              132,558
                                                                                ---------            ---------            ---------
</TABLE>


                                       6
<PAGE>   8

<TABLE>
<S>                                                                             <C>                  <C>                  <C>      
Reinsurance receivables on unpaid losses and LAE ....................             191,927              138,591              137,043
                                                                                ---------            ---------            ---------

Gross reserves for losses and LAE at end of year ....................           $ 342,444            $ 278,432            $ 269,601
                                                                                =========            =========            =========
</TABLE>

     The following table presents the development of the Company's loss and LAE
reserves for 1988 through 1998. The line "Net reserves for losses and LAE"
reflects the net reserves at the balance sheet date for each of the indicated
years and represents the estimated amount of losses and LAE arising in all prior
years that are unpaid at the balance sheet date. The "Reserves re-estimated"
lines of the table reflect the re-estimated amount of the previously recorded
reserves based on experience as of the end of each succeeding year. The estimate
changes as more information becomes known about the frequency and severity of
claims for individual years. The "Cumulative redundancy (deficiency)" lines of
the table reflect the cumulative amounts developed as of successive years with
respect to the aforementioned reserve liability. The cumulative redundancy or
deficiency represents the aggregate change in the estimates over all prior
years.

     The table allocates losses and LAE reported and recorded in subsequent
years to all prior years starting with the year in which the loss was incurred.
For example, assume that a loss occurred in 1994 and was not reported until
1996, the amount of such loss will appear as a deficiency in both 1994 and 1995.
Conditions and trends that have affected development of the liability in the
past may not necessarily occur in the future. Accordingly, it may not be
appropriate to extrapolate future redundancies or deficiencies based on these
tables.


                                       7
<PAGE>   9

<TABLE>
<CAPTION>
                                                                                      Year Ended December 31,
                                    ---------------------------------------------------------------------------

                                      1988         1989          1990          1991         1992         1993  
                                      ----         ----          ----          ----         ----         ----  
                                                                                               (In thousands)
<S>                                 <C>          <C>           <C>           <C>          <C>         <C>      
Net reserves for losses
  and LAE .....................     $54,326      $59,477       $70,457       $77,507      $89,361     $103,176 
Reserves for losses and
LAE re-estimated as of:
  One year later  .............      53,841       61,449        71,643        80,478       94,785      104,306 
  Two years later  ............      53,466       62,206        73,849        80,937       98,062      102,831 
  Three years later  ..........      51,297       61,255        73,441        81,322       98,338      101,537 
  Four years later  ...........      49,356       60,062        73,349        80,652       97,257      100,432 
  Five years later  ...........      48,105       60,476        72,706        79,469       96,889       98,805 
  Six years later .............      48,056       60,490        71,730        79,239       96,358              
  Seven years later  ..........      48,176       60,382        71,620        78,742                           
  Eight years later  ..........      48,157       60,364        71,003                                         
  Nine years later  ...........      48,443       59,787                                                       
  Ten years later  ............      47,883                                                                    
                                                                                                               
Net cumulative redundancy                                                                                      
  (deficiency)                        6,443        (310)         (546)       (1,235)      (6,997)        4,371 

Net cumulative paid as of:
  One year later  .............      13,772       17,593        22,784        25,741       37,998       32,700 
  Two years later  ............      22,354       29,694        36,532        43,688       54,552       53,603 
  Three years later  ..........      29,134       37,032        47,060        51,753       65,997       62,769 
  Four years later  ...........      33,178       43,270        51,769        59,308       72,063       69,356 
  Five years later  ...........      37,255       46,066        57,421        63,138       75,864       75,534
  Six years later  ............      38,299       50,456        60,291        65,441       80,193
  Seven years later  ..........      41,705       52,521        61,837        68,192
  Eight years later  ..........      43,120       53,482        63,753
  Nine years later  ...........      43,901       55,019
  Ten years later  ............      44,750


Gross liability-end of year ...........................................................   224,191      247,346 
Reinsurance recoverable  ..............................................................   134,830      144,170 
                                                                                          -------      ------- 
Net liability-end of year  ............................................................    89,361      103,176 

Gross re-estimated latest  ............................................................   290,880      275,749 
Re-estimated recoverable latest .......................................................   194,522      176,944 
                                                                                          -------      ------- 
Net re-estimated latest  ..............................................................    96,358       98,805 
Gross cumulative (deficiency)  ........................................................   (66,689)     (28,403)


<CAPTION>
                                    
                                    ------------------------------------------------------------------

                                           1994         1995            1996        1997        1998
                                           ----         ----            ----        ----        ----
<S>                                     <C>           <C>            <C>         <C>          <C>     
Net reserves for losses
  and LAE .....................         $135,377      $138,761       $132,558    $139,841     $150,517
Reserves for losses and
LAE re-estimated as of:
  One year later  .............          142,400       136,309        131,524     136,458               
  Two years later  ............          139,139       134,324        127,901                           
  Three years later  ..........          138,155       131,658                                          
  Four years later  ...........          135,482                                                        
  Five years later  ...........                                                                         
  Six years later .............                                                                         
  Seven years later  ..........                                                                         
  Eight years later  ..........                                                                         
  Nine years later  ...........                                                                         
  Ten years later  ............                                                                         
                                                                                                        
Net cumulative redundancy                                                                  
  (deficiency) ................             (105)        7,103          4,657       3,383

Net cumulative paid as of:
  One year later  .............           47,187        39,741         32,416      41,798
  Two years later  ............           69,960        59,397         59,796
  Three years later  ..........           83,921        78,821
  Four years later  ...........           97,499
  Five years later  ...........     
  Six years later  ............     
  Seven years later  ..........     
  Eight years later  ..........     
  Nine years later  ...........     
  Ten years later  ............     


Gross liability-end of year ........     314,898       273,854        269,601     278,432      342,444
Reinsurance recoverable  ...........     179,521       135,093        137,043     138,591      191,927
                                         -------       -------        -------     -------      -------
Net liability-end of year  .........     135,377       138,761        132,558     139,841      150,517

Gross re-estimated latest  .........     350,999       298,079        287,873     297,780
Re-estimated recoverable latest ....     215,517       166,421        159,972     161,322
                                         -------       -------        -------     -------
Net re-estimated latest  ...........     135,482       131,658        127,901     136,458
Gross cumulative (deficiency)  .....     (36,101)      (24,225)       (18,272)    (19,348)
</TABLE>



                                       8
<PAGE>   10

     The net cumulative deficiencies for the years ended December 31, 1989
through 1992 resulted primarily from the allocation of losses to the appropriate
calendar years without regard to any additional premiums relating to such
calendar years which were reported to and recorded by the Insurance Companies in
subsequent periods. These deficiencies are offset, in part, by additional net
earned premiums for such respective calendar years reported and recorded by the
Insurance Companies in subsequent years. The net deficiency for 1994 resulted
from development of losses from the Northridge, California earthquake which
occurred on January 17, 1994 (the "Northridge Earthquake"). The Company had net
cumulative redundancies for the remainder of the years shown in the table.

     The 1992 and 1993 gross cumulative deficiencies resulted primarily from the
Exxon Valdez loss. The gross cumulative deficiencies for 1994 and 1995 resulted
primarily from the 1994 Northridge Earthquake loss and the 1989 Exxon Valdez
loss. The 1996 gross cumulative deficiency resulted from adverse development in
certain lines of business. The 1997 gross cumulative deficiency primarily
resulted from adverse development in the onshore energy business and from one
large 1989 claim from a runoff book of business which also adversely affected
years prior to 1997. The adverse development on the Company's gross reserves has
been mostly reinsured through excess of loss reinsurance treaties.

     Management believes that the Insurance Companies' reserves for losses and
LAE are adequate to cover the ultimate cost of losses and LAE on reported and
unreported claims.

ENVIRONMENTAL POLLUTION AND ASBESTOS RELATED CLAIMS

     In 1998 and 1997, the Insurance Companies paid gross losses and LAE of
$2,091,000 and $1,510,000 resulting in net paid losses and LAE of $369,000 and
$723,000, respectively, for environmental pollution and asbestos related claims.
As of December 31, 1998 and 1997, the Insurance Companies carried gross reserves
of $2,912,000 and $2,622,000, respectively, and net reserves of $1,199,000 and
$936,000, respectively, for the potential exposure to such claims. Management
believes that its reserves for such claims are adequate because the Insurance
Companies' participation in such risks is generally in the higher excess layers
and, based on a continuing review of such claims, management believes that a
majority of these claims will be unlikely to penetrate such high excess layers
of coverage; however, due to significant assumptions inherent in estimating
these exposures, actual liabilities could differ from current estimates. For the
year ended December 31, 1998 and 1997, open claims with environmental pollution
and asbestos exposure amounted to 2,225 and 2,451, respectively. Management
will continue to review its exposure to and reserves for such claims. Any
potential exposure to these claims exists predominately in connection with the
marine business.

INVESTMENTS

     The investments of the Insurance Companies must comply with the insurance
laws of New York State, the domiciliary state of Navigators Insurance and NIC.
These laws prescribe the kind, quality and concentration of investments which
may be made by insurance companies. In general, these laws permit investments,
within specified limits and subject to certain qualifications, in federal, state
and municipal obligations, corporate bonds, preferred stocks, common stocks,
real estate mortgages and real estate. The Insurance Companies' investment
guidelines prohibit investments in derivatives other than as a hedge against a
foreign currency.

     The Insurance Companies' investments are subject to the direction and
control of its Board of Directors and are reviewed on a quarterly basis. The
investments are managed by various professional fixed income and equity
portfolio managers. Current investment objectives are to maximize annual after
tax income in the context of preserving and enhancing capital and statutory
surplus. Navigators Insurance seeks to obtain these objectives by investing in
municipal bonds, U.S. Government obligations, corporate bonds, and preferred and
common stocks. Due to the Company being in an alternative minimum tax 


                                       9
<PAGE>   11

("AMT") position, the Finance Committee of the Board of Directors reviewed the
Company's concentration in municipal bonds and in 1997 instructed the portfolio
managers to reduce the municipal bond portfolio. The Insurance Companies'
investment guidelines require that at least 90% of the fixed income portfolio be
rated "A-" or better by a nationally recognized rating organization. Up to 25%
of the total portfolio may be invested in equity securities that are actively
traded on major U.S. stock exchanges.

     At December 31, 1998 and 1997, all fixed maturity and equity securities
held by the Company were classified as available-for-sale.

     The majority of the investment income of the Somerset Companies is derived
from fiduciary funds invested in accordance with the guidelines of various state
insurance departments. These guidelines typically require investments in
short-term instruments. Beginning January 1, 1998 this investment income is paid
to the syndicate members, including Navigators Insurance.

     The table set forth below reflects investments and income earned thereon
for the Company on a consolidated basis and for the Insurance Companies for each
of the three years ended December 31, 1998:

<TABLE>
<CAPTION>
                                                    Year Ended December 31,
                                            ----------------------------------
                                            1998            1997          1996
                                            ----            ----          ----
                                                    (Dollars in thousands)
<S>                                       <C>            <C>           <C>     
The Company Consolidated (1) (2)
- - --------------------------------
Average investments ..................... $259,121       $259,636      $252,618
Net investment income ...................   15,209         14,435        13,614
Average yield ...........................    5.87%          5.56%         5.39%

Insurance Companies
- - -------------------
Average investments ..................... $251,422       $244,905      $231,111
Net investment income  ..................   14,659         13,696        12,578
Average yield ...........................    5.83%          5.59%         5.44%
</TABLE>

(1)  Included in the Company's average investments and investment income for
     1997 and 1996 are fiduciary cash and short-term investments not included in
     the balance sheet and the earnings thereon from the Somerset Companies. See
     Note 4 to the Company's Consolidated Financial Statements.

(2)  The Company's average investments for 1998 include NCUL's and Millennium's
     portion of the investments held by Lloyd's Syndicate 1221 and which
     represent funds due from Syndicate 1221 to the Company.


                                       10
<PAGE>   12

     The following table shows the cash and investments of the Company as of
December 31, 1998:

<TABLE>
<CAPTION>
                                                  Carrying Value   Percent
                                                  (In thousands)   of Total
                                                  --------------   --------
<S>                                                  <C>              <C> 
 Cash and short-term investments ...............     $  8,454         3.3%
 U.S. Treasuries ...............................       15,462         6.0
 Municipal bonds ...............................      126,390        49.1
 Mortgage backed securities ....................       45,648        17.7
 Asset backed securities .......................       35,685        13.9
 Corporate bonds ...............................       15,956         6.2
 Redeemable preferred stocks ...................        1,092         0.4
 Common stocks .................................        7,400         2.9
 Other invested assets .........................        1,145         0.5
                                                     --------       -----

   Total .......................................     $257,232       100.0%
                                                     ========       =====
</TABLE>

REGULATION

     The Company, the Insurance Companies and the Lloyd's operations are subject
to regulation under the insurance statutes including holding company statutes of
various states, the UK regulatory authorities and Lloyd's. These regulations
vary but generally require insurance holding companies, and insurers that are
subsidiaries of holding companies, to register and file reports concerning their
capital structure, ownership, financial condition and general business
operations. Such regulations also generally require prior regulatory agency
approval of changes in control of an insurer and of transactions within the
holding company structure. The regulatory agencies have statutory authorization
to enforce their laws and regulations through various administrative orders and
enforcement proceedings.

     The Insurance Department of the State of New York (the "Department") is the
Company's principal regulatory agency. The New York Insurance Law provides that
no corporation or other person may acquire control of the Company, and thus
indirect control of the Insurance Companies, unless it has given notice to the
Insurance Companies, and obtained prior written approval of the Superintendent
of Insurance of the State of New York for such acquisition. In New York, any
purchaser of 10% or more of the outstanding shares of the Company's common stock
would be presumed to have acquired control of the Company, unless such
presumption is rebutted. The UK authorities and Lloyd's also have regulatory
requirements concerning change in control.

     Navigators Insurance and NIC may pay dividends only out of their statutory
earned surplus under New York insurance law. Generally, the maximum amount of
dividends Navigators Insurance and NIC may pay without regulatory approval in
any twelve-month period is the lesser of adjusted net investment income or 10%
of statutory surplus.

     Under insolvency or guaranty laws in most states in which Navigators
Insurance and NIC operate, insurers doing business in those states can be
assessed up to prescribed limits for policyholder losses of insolvent insurance
companies.

     Navigators Insurance is licensed to engage in the insurance and reinsurance
business in 49 states, the District of Columbia and Puerto Rico. NIC is licensed
to engage in the insurance and reinsurance business in the State of New York and
is an approved surplus lines insurer or meets the financial requirements where
there is not a formal approval process in 31 states and the District of
Columbia.


                                       11
<PAGE>   13

     As part of its general regulatory oversight process, the Department
conducts detailed examinations of the books, records and accounts of New York
insurance companies every three to five years. Navigators Insurance and NIC were
examined by the Department for the years 1991 through 1995. The Department did
not recommend any adjustments to the Insurance Companies' previously filed
statutory financial statements.

     The Insurance Regulatory Information System ("IRIS") was developed by the
National Association of Insurance Commissioners ("NAIC") and is intended
primarily to assist state insurance departments in executing their statutory
mandates to oversee the financial condition of insurance companies operating in
their respective states. IRIS identifies twelve industry ratios and specifies
"usual values" for each ratio. Departure from the usual values on four or more
of the ratios can lead to inquiries from individual state insurance
commissioners as to certain aspects of an insurer's business. As of December 31,
1998 and 1997, the Insurance Companies' results were within the usual values for
all IRIS ratios.

     The NAIC recently completed a process intended to codify statutory
accounting practices for insurance enterprises. As a result of this process, the
NAIC will issue a revised statutory Accounting Practices and Procedures Manual
that will be effective January 1, 2001 for the calendar year 2001. The Company
will prepare its statutory basis financial statements in accordance with the
revised statutory manual subject to any deviations prescribed or permitted by
the New York insurance commissioner. The Company has not yet determined the
impact that this change will have on its statutory capital and surplus.

     From time to time various regulatory and legislative changes have been
proposed in the insurance and reinsurance industry. Among the proposals that
have in the past been or are at present being considered are the possible
introduction of federal regulation in addition to, or in lieu of, the current
system of state regulation of insurers and proposals in various state
legislatures (some of which proposals have been enacted) to conform portions of
their insurance laws and regulations to various model acts adopted by the NAIC.
The Company is unable to predict whether any of these laws and regulations will
be adopted, the form in which any such laws and regulations would be adopted, or
the effect, if any, these developments would have on the operations and
financial condition of the Company.

     State insurance departments have adopted a methodology developed by the
NAIC for assessing the adequacy of statutory surplus of property and casualty
insurers which includes a risk-based capital formula that attempts to measure
statutory capital and surplus needs based on the risks in a company's mix of
products and investment portfolio. The formula is designed to allow state
insurance regulators to identify potential weakly capitalized companies. Under
the formula, a company determines its "risk-based capital" ("RBC") by taking
into account certain risks related to the insurer's assets (including risks
related to its investment portfolio and ceded reinsurance) and the insurer's
liabilities (including underwriting risks related to the nature and experience
of its insurance business). The RBC rules provide for different levels of
regulatory attention depending on the ratio of a company's total adjusted
capital to its "authorized control level" of RBC. Based on calculations made by
Navigators Insurance and NIC, their RBC level exceeds a level that would trigger
regulatory attention. In their respective 1998 statutory financial statements,
Navigators Insurance and NIC have complied with the NAIC's RBC reporting
requirements.

     In addition to regulations applicable to insurance agents generally, the
Somerset Companies are subject to Managing General Agents Acts in their state
of domicile and in certain other jurisdictions where they do business.

     The Company's subsidiaries domiciled in the UK are subject to regulation
from the government regulatory authorities in the UK and from Lloyd's.


                                       12
<PAGE>   14

COMPETITION

     The property and casualty insurance industry is highly competitive. The
demand for low-cost, high quality service has created difficult conditions in
the domestic property and casualty market, including a leveling or reduction in
premium rates in certain lines of business in which the Company competes. The
Company believes the current situation will not improve dramatically in the
foreseeable future.

     The Company faces competition from both domestic and foreign insurers, some
of whom have longer operating histories and greater financial, marketing and
management resources. Competition in the types of insurance in which the Company
is engaged is based on many factors, including the perceived overall financial
strength of the Company, pricing and other terms and conditions of products and
services offered, business experience, marketing and distribution arrangements,
agency and broker relationships, levels of customer service (including speed of
claims payments), product differentiation and quality, operating efficiencies
and underwriting. Furthermore, insureds tend to favor large, financially strong
insurers, and the Company faces the risk that it will lose market share to
higher rated insurers.

     No single insured or reinsured accounted for 10% or more of the Company's
gross written premium in 1998.

     Another competitive factor in the industry involves banks stepping up
efforts to break down the barriers between various segments of the financial
services industry, including insurance. These efforts pose new challenges to
insurance companies and agents from industries traditionally outside the
insurance business.             

EMPLOYEES

     As of December 31, 1998, the Company had 118 employees.

ITEM 2. PROPERTIES

     The Company's administrative offices are occupied pursuant to a lease from
an unaffiliated company which expires May 14, 2000 in a building located at 123
William Street, New York, New York. Several of the Company's subsidiaries have
noncancellable operating leases for their respective office location. The
Company does not own any real estate.

ITEM 3. LEGAL PROCEEDINGS

     The Company is not a party to or the subject of, any material pending legal
proceedings which depart from the ordinary routine litigation incident to the
kinds of business conducted by the Company, except for an assessment on
Navigators Insurance by the Institute of London Underwriters ("ILU"). In late
1998, the ILU advised its then current forty-one (41) members, including
Navigators Insurance, that they were each being assessed approximately
(pound)900,000 to pay for anticipated operating deficits arising from the long
term lease of the ILU building located in London (the "ILU Building"). This
assessment was to be paid in cash or by providing a letter of credit.

     Since the anticipated operating deficits responsible for the ILU's
assessment were apparently recognized by the ILU prior to Navigators Insurance
joining the ILU in November 1997, Navigators Insurance has taken the position in
its discussions with the ILU that the anticipated operating deficits should have
been disclosed to Navigators Insurance during the pendency of the application
for membership or afterwards. This would have allowed Navigators Insurance to
make an informed decision as to whether it should have joined the ILU in the
first instance or continued its membership. Any other conclusion would absolve
the ILU, its longstanding members (both past and present), auditors and other
advisors from 


                                       13
<PAGE>   15

their duties to Navigators Insurance in connection with its application for, and
subsequent membership in the ILU.

     Even assuming that Navigators Insurance could be held responsible for the
assessment, Navigators Insurance has also informed the ILU that it opposes the
assessment as inequitable and inappropriate since it purports to force the ILU's
members (without regard to the length of membership, proportionate usage of the
ILU's London Processing Centre or current or past occupancy of the ILU Building)
to pay now for potential worst case liabilities extending through 2011.

     The ILU has, thus far, not filed suit to enforce the assessment against
Navigators Insurance. In the event the ILU does file such a suit, Navigators
Insurance intends to vigorously contest liability for payment of the assessment.
It is not possible to forecast the ultimate liability, if any, at the present
time.

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

     There were no matters submitted to a vote of security holders during the
fourth quarter of 1998.

PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED
        STOCKHOLDER MATTERS

MARKET INFORMATION

     The Company's common stock is traded over-the-counter (The Nasdaq National
Market) under the symbol NAVG. Over-the-counter market quotations reflect
inter-dealer prices, without retail mark-up, mark-down or commissions and may
not necessarily represent actual transactions.

     The high and low bid prices for the four quarters of 1998 and 1997 are as
follows:

<TABLE>
<CAPTION>
                                     1998                      1997
                              ------------------        ------------------
                              High         Low           High         Low
<S>                           <C>         <C>           <C>         <C>   
First Quarter  ............   $20.75      $17.00        $19.75      $15.75
Second Quarter  ...........   $19.25      $17.63        $18.13      $15.75
Third Quarter  ............   $19.50      $14.50        $21.38      $17.75
Fourth Quarter  ...........   $16.25      $13.25        $22.50      $18.00
</TABLE>

     There were approximately 100 holders of record of shares of the Company's
common stock as of March 23, 1999. However, management believes there are in
excess of 1,000 beneficial owners of the stock.

DIVIDENDS

     The Company has not paid or declared any cash dividends on its common
stock. While there presently is no intention to pay cash dividends on the common
stock, future declarations, if any, and the amounts of such dividends will be
dependent upon, among other factors, the earnings of the Company, its financial
condition and business needs, restrictive covenants under debt arrangements, the
capital and surplus requirements of its subsidiaries and applicable government
regulations.


                                       14
<PAGE>   16

ITEM 6. SELECTED FINANCIAL DATA

     The following table sets forth summary consolidated financial information
of the Company for each of the years in the five-year period ended December 31,
1998 derived from the Company's audited consolidated financial statements. See
the Consolidated Financial Statements of the Company including notes thereto
included herein.

<TABLE>
<CAPTION>
                                                                                Year Ended December 31,
                                                      -----------------------------------------------------------------------------
                                                         1998             1997             1996             1995             1994
                                                      ---------        ---------        ---------        ---------        ---------
                                                                           (In thousands, except per share data)
<S>                                                   <C>              <C>              <C>              <C>              <C>      
OPERATING INFORMATION:
Net earned premium ...........................        $  91,203        $  85,002        $  78,731        $  87,908        $  90,483
Net investment income ........................           15,209           14,435           13,614           14,143           13,034
Total revenues ...............................          115,120          108,217          102,788          113,714          113,892
Income (loss)
 before income taxes .........................           15,153           17,184           20,874           15,563          (31,574)
Net income (loss) ............................           11,489           12,546           16,752           12,582          (20,495)
Net income (loss) per share:
 Basic .......................................        $    1.37        $    1.51        $    2.04        $    1.54        $   (2.51)
 Diluted .....................................        $    1.36        $    1.50        $    2.02        $    1.53        $   (2.50)
Average common shares:
 Basic .......................................            8,414            8,296            8,197            8,154            8,151
 Diluted .....................................            8,459            8,385            8,286            8,213            8,185
BALANCE SHEET INFORMATION
 (AT END OF PERIOD):
Total investments & cash .....................        $ 257,232        $ 258,572        $ 240,720        $ 235,460        $ 203,103
Total assets .................................          592,086          501,207          457,095          435,552          474,031
Loss and LAE reserves ........................          342,444          278,432          269,601          273,854          314,898
Notes payable ................................           23,500           20,942           17,942           20,508           28,108
Stockholders' equity .........................          143,266          131,242          115,542           99,076           77,523
Book value per share .........................        $   16.96        $   15.68        $   14.03        $   12.12        $    9.51
</TABLE>

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

GENERAL

     The Company is a holding company with fourteen wholly owned subsidiaries.
See "BUSINESS-General" included herein for a description of the Company.

     The Company's revenue is primarily comprised of premiums, commissions and
investment income. The Insurance Companies derive the majority of their business
from the Somerset Companies through either business written specifically for the
Insurance Companies or through Navigators Insurance's participation in insurance
pools managed by the Somerset Companies. The insurance business and operations
of the Insurance Companies are managed by the Somerset Companies. The
Lloyd's marine premium is generated as the result of capacity provided to
Syndicate 1221 by NCUL and Millennium in 1998 and capacity provided to Syndicate
1221 and an unaffiliated syndicate by NCUL in 1997. The premiums, losses and
expenses from the Lloyd's marine syndicates are included in the Company's
financials but are not included in the Insurance Companies' results since NCUL
and Millennium are not part of the Insurance Companies' operations. The Company
earns investment income on its invested assets and on the invested assets held
by the Lloyd's syndicates for whom NCUL and Millennium provide capacity.


                                       15
<PAGE>   17

     The Company writes business in Southeast Asia through one of the Somerset
Companies. To date, the participation in this market has been limited and
therefore the Company's exposure to the economic conditions in Asia does not
materially effect its operations.


RESULTS OF OPERATIONS

     General. The Company's 1998 and 1997 results of operations reflect intense
market competition in the marine and aviation lines.

     In November 1988, the voters of the State of California approved
Proposition 103, which required most property and casualty insurance companies,
among other things, to reduce rates charged to California insureds to a level
20% below November 8, 1987 levels. On March 19, 1996, the Company agreed with
the Commissioner to settle its rollback liability under Proposition 103. The
settlement cost the Company approximately $2.0 million net of recoveries from
reinsurers, of which approximately $1.0 million was recorded in each of 1995 and
1996.

     Revenues. Gross written premium increased from $142.5 million in 1996 to
$171.2 million in 1997 and increased to $172.2 million in 1998. The following
table sets forth the Company's gross written premium by line of business and net
written premium in the aggregate for the periods indicated:

<TABLE>
<CAPTION>
                                                                   Year Ended December 31,
                                            ---------------------------------------------------------------------
                                                      1998                   1997                      1996
                                                      ----                   ----                      ----
                                                                        (In thousands)
<S>                                         <C>            <C>       <C>           <C>      <C>         <C>
Lloyd's -- Marine .....................     $  46,637       27%      $  24,654      14%     $      --        --%
Marine ................................        64,043       37          56,231      33         51,948         36
Aviation ..............................        23,405       14          34,960      20         41,142         29
Inland Marine .........................          (154)      --           8,327       5         14,539         10
Onshore Energy ........................        11,418        7           9,854       6          6,902          5
Engineering and Construction ..........         9,976        6           7,592       4             --         --
Specialty Reinsurance                        
  and Program Insurance ...............        16,886        9          29,631      18         27,993         20
                                            ---------     ----       ---------    ----      ---------  ---------

  Gross Written Premium................       172,211      100%        171,249     100%       142,524        100%
                                            =========     ====       =========    ====      ---------  ========= 

  Ceded Written Premium................       (83,729)                 (80,369)               (58,356)
                                            ---------                ---------              ---------
  Net Written Premium..................     $  88,482                $  90,880              $  84,168
                                            =========                =========              =========
</TABLE>

LLOYD'S OPERATIONS

     Lloyd's Marine Premium. In 1998, NCUL and Millennium wrote $46.6 million of
marine premium through providing capacity to Lloyd's Syndicate 1221 managed by
MTC. NCUL wrote $24.7 million of marine premium through providing capacity to
two Lloyd's syndicates in 1997 including Syndicate 1221.

     Lloyd's presents its results on an underwriting year basis, generally
closing each underwriting year after three years. The Company estimates its
participation in each year and timely accrues the expected results.


                                       16
<PAGE>   18

     Lloyd's Syndicate 1221 had capacity of $111.1 million in 1998 and $113.1
million in 1997. The Company participated through NCUL and Millennium for an
aggregate 39.5% of the 1998 business and through NCUL for 22.8% of the 1997
business produced by MTC for Syndicate 1221. The Lloyd's marine business has
been subject to continued pricing competition resulting in less premiums per
risk relative to certain prior years. As a result, the Company wrote less than
the capacity available.

     At December 31, 1998, Syndicate 1221 and an unaffiliated syndicate on which
NCUL participated in 1997 closed their 1996 underwriting year resulting in  a
portfolio transfer to NCUL at December 31, 1998. This transaction accounted for
the majority of the increase in the premium volume in the Company's Lloyd's
operations from 1997 to 1998 generating $19.7 million as additional written and
earned premium and losses incurred in the same amount at December 31, 1998.
There was no gain or loss on the transaction. The amount agreed upon to close 
an underwriting year into the next year is referred to as the "reinsurance to 
close."

INSURANCE COMPANIES

     Marine Premium. Marine gross written premium (non-Lloyd's) increased 14%
from 1997 to 1998 due to, beginning July 1, 1998, Navigators Insurance writing
100% of the marine risk and then ceding 40% to the pool members and to
Navigators Insurance's participation in the marine pools increasing from 48% in
1997 to 60% in 1998. The 1997 increase from 1996 was due primarily to Navigators
Insurance's increased participation in the marine pools from 41% in 1996 to 48%
in 1997. Marine premium has been subject to continued pricing competition
throughout 1997 and 1998.

     Aviation Premium. Aviation gross written premium decreased 33% from 1997 to
1998 as the result of Navigators Insurance's withdrawal from aviation business
effective October 1998, other than a small amount of war and satellite business,
due to inadequate pricing in the aviation insurance market. The 15% reduction in
aviation gross written premium from 1996 to 1997 was due to decreasing the
amount of exposure written per risk and to price competition.

     Inland Marine Premium. As of June 1997, the Company no longer writes inland
marine business, other than onshore energy. The Somerset Companies produced the
inland marine business written by the Insurance Companies.

     Onshore Energy Premium. In 1996, Navigators Insurance began to underwrite
onshore energy business which principally focuses on the oil and gas, chemical
and petrochemical, and power generation industries with coverages primarily for
property damage and machinery breakdown. In 1999, the Company will primarily
write onshore energy business though its facilities at Lloyd's. The UK Branch
will participate in the business written through Lloyd's.

     Engineering and Construction Premium. Somerset Asia began writing
engineering and construction risks in Southeast Asia in 1997. The business was
also written by Somerset UK beginning in late 1997. In 1999, the Company will
write engineering and construction business through its facilities at Lloyd's
instead of through the Somerset Companies. The UK Branch will participate in the
business written through Lloyd's.

     Specialty Reinsurance and Program Insurance Premium. The reinsurance
business was produced and managed by one of the Somerset Companies. This
reinsurance premium consisted primarily of excess of loss and quota share
property, surety, and other specialty reinsurance lines. Navigators Insurance
did not renew this reinsurance business after 1995 except for a few specialty
treaties. The program insurance, which began in 1995, was reduced for 1997, and
currently consists of one managing general agent writing primarily general
liability for contractors.


                                       17
<PAGE>   19

CEDED PREMIUM. In the ordinary course of business, the Company reinsures certain
insurance risks with unaffiliated insurance companies for the purpose of
limiting its maximum loss exposure, protecting against catastrophic losses, and
maintaining desired ratios of net premiums written to statutory surplus. The
increase in the ceded premium from 1996 to 1997 and from 1997 to 1998 resulted
from the engineering and construction business and the program business, which
were heavily reinsured, and from increasing the reinsurance on the marine
business. In addition, beginning July 1, 1998, Navigators Insurance began
writing 100% of the marine risks and then ceded 40% to the pool members.

NET WRITTEN PREMIUM. The 2.6% decrease in net written premium from 1997 to 1998
was primarily due to the reduction in fourth quarter 1998 aviation premium and
competitive pressure in the marketplace partially offset by the increase in the
Lloyd's marine premium and Navigators Insurance increasing its participation in
the marine pool to 60% in 1998 from 48% in 1997. The 8.0% increase in net
written premium from 1996 to 1997 was primarily due to increases in the marine
premium received from both the Somerset Companies and Lloyd's along with the new
engineering and construction business, partially offset by decreases in the
aviation and inland marine premium.

NET EARNED PREMIUM. The 7.3% increase in net earned premium from 1997 to 1998
and the 8.0% increase in net earned premium from 1996 to 1997 was primarily due
to the increase in the net written premium in 1997.

COMMISSION INCOME. Commission income increased 29.2% to $6.6 million in 1998
from $5.1 million in 1997 due to the profit commission earned by MTC from the
1996 underwriting year partially offset by Navigators Insurance increasing its
participation in the marine pool to 60% in 1998 from 48% in 1997 which decreased
both the management commission and the profit commission. The MTC profit
commission was also included as other operating expenses under bonus
arrangements with certain of the MTC staff. The commission income decreased
42.2% from 1996 to 1997 due to Navigators Insurance increasing its participation
in the marine pool from 41% in 1996 to 48% in 1997. Also, the 1996 commission
income includes $826,000 of profit commissions earned under a management
agreement with a former affiliate associated with Lloyd's.

NET INVESTMENT INCOME. Net investment income increased 5.4% to $15.2 million in
1998 from $14.4 million in 1997 due to the investment income allocated to NCUL
and Millennium from the Lloyd's Syndicates on which they participate. Net
investment income increased 6% to $14.4 million in 1997 from $13.6 million in
1996 due to the increase in invested assets and the decrease of municipal bonds
in the portfolio, partially offset by a decrease in fiduciary funds held by the
Somerset Companies resulting in less investment income from the funds.

     Operating Expenses.

     Net Losses and Loss Adjustment Expenses Incurred. The ratio of net loss and
loss adjustment expenses incurred to net earned premium was 68.3%, 61.9%, and
62.2% in 1998, 1997 and 1996, respectively. The increase in the 1998 loss ratio
compared to 1997 was primarily due to the Company's portion of the reinsurance
to close the Lloyd's 1996 underwriting year amounting to $19.7 million which
reflects estimated ultimate losses. The 1998 loss ratio excluding the
reinsurance to close was 59.6% which decreased from 1997 primarily as the
result of favorable loss experience on the Insurance Companies partially offset
by slightly higher loss ratios on the Lloyd's business. The 1997 loss ratio 
improved modestly over 1996. The loss reserves are not discounted.

     Commission Expense. Commission expense as a percentage of net earned
premium was 13.0%, 17.6%, and 15.5% for 1998, 1997 and 1996, respectively. The
decrease in the 1998 commission expense ratio compared to 1997 was primarily due
to the $19.7 million of reinsurance to close premium resulting from 


                                       18
<PAGE>   20

closing of the Lloyd's 1996 underwriting year. The 1998 commission expense
ratio without the 1996 reinsurance to close premium was 16.6%. The increase in
the 1997 commission expense ratio compared to 1996 was primarily due to
increased excess of loss reinsurance purchased in 1997 on the marine, aviation
and onshore energy lines of business which lowers net premium with no
corresponding ceding commission to offset the commission expense incurred on
the gross premium and to a generally higher commission percentage on the
Lloyd's premium.

     Other Operating Expenses. Other operating expenses increased 9.1% to $24.3
million in 1998 over 1997 primarily due to expenses incurred by MTC (not
included in 1997), and increased expenses relating to Somerset (UK) and Somerset
Asia. The 8.9% increase from 1996 to 1997 was primarily due to expenses incurred
by Somerset (UK) and Somerset Asia.

     Interest Expense. The increase in the interest expense from 1997 to 1998
was due to the higher loan and letter of credit balances in 1998. The decrease
in the interest expense from 1996 to 1997 was due to $368,000 of interest
expense in 1996 attributable to the Company's rollback liability under
California Proposition 103 and to fluctuations in the loan balance.

     Income Taxes. The income tax expense was $3.7 million, $4.6 million and
$4.1 million for 1998, 1997 and 1996, respectively. The effective tax rates for
1998, 1997 and 1996 were 24%, 27% and 20%, respectively. The decrease in the
1998 rate compared to the 1997 rate was primarily due to revenues in Somerset
(UK) and Somerset Asia beginning to utilize some of the operating losses
generated by the foreign operations. The increase in the 1997 rate compared to
1996 was primarily due to not being able to utilize the losses from Somerset
(UK) and Somerset Asia. The Company had a net operating loss carryforward of
$3.0 million at December 31, 1995 which was fully utilized in 1996. The Company
had alternative minimum tax ("AMT") carryforwards of $4.7 million, $5.1 million
and $5.8 million at December 31, 1998, 1997 and 1996, respectively. The AMT
carryforwards were primarily attributable to the tax benefits from municipal
bond interest. The Company began reducing its municipal bond portfolio in 1997.

     As of December 31, 1998 and 1997, the net deferred Federal and foreign tax
asset was $8.0 million. At December 31, 1998 the Company had a $1.6 million
valuation allowance against its deferred Federal tax asset compared to a $1.1
million valuation allowance at December 31, 1997. The valuation allowance is
necessitated by the uncertainty associated with the realization of the deferred
tax asset for the carryforward of operating losses from the Company's foreign
operations.

     Net Income. The Company's net income decreased in 1998 to $11.5 million
from $12.5 million in 1997 and from $16.8 million in 1996 primarily due to price
competition and expenses related to the expansion in London and Australia.


LIQUIDITY AND CAPITAL RESOURCES

     Cash flow provided by (used in) operations was ($3.0) million, $12.5
million and $7.3 million for 1998, 1997 and 1996, respectively. Operating cash
flow has been used primarily to acquire additional investment assets with net
purchases (disposals) during 1998, 1997 and 1996 of ($1.1) million, $17.6
million and $11.5 million, respectively. The negative cash flow in 1998 was
primarily due to the payment of loss reserves on runoff business and less
premiums received, partially due to Lloyd's disbursing cash only after an
underwriting year has closed, normally three years later.

     At December 31, 1998, the Company had committed approximately $300,000 to
continue to enhance its hardware and software computer systems in 1999.


                                       19
<PAGE>   21

     Invested assets and cash (excluding fiduciary funds held by the Somerset
Companies) increased from $240.7 million at December 31, 1996 to $258.6 million
at December 31, 1997 and decreased to $257.2 million at December 31, 1998.
Investment income during this period was $13.6 million in 1996, $14.4 million in
1997 and $15.2 million in 1998. The average yield of the portfolio, excluding
net realized capital gains, was 5.4% in 1996, 5.6% in 1997, and 5.9% in 1998
reflecting the prevailing interest rates during those years and the decrease in
the tax-exempt portfolio beginning in 1997. As of December 31, 1998, all fixed
maturity securities and equity securities held by the Company were classified as
available-for-sale.

     The average rating of the Company's fixed maturity investments is AA by
Standard & Poor's and Aa by Moody's. The Company has no significant exposure to
credit risk since the Company's fixed maturity investment portfolio primarily
consists of investment grade bonds. The portfolio has an average maturity of
less than seven years. Management continually monitors the composition and cash
flow of the investment portfolio in order to maintain the appropriate levels of
liquidity. This ensures the Company's ability to satisfy claims or expenses as
they become due.

     The increase in the reinsurance receivable on paid and unpaid losses and
loss adjustment expenses, and the increase for reserves for losses and loss
adjustment expenses at December 31, 1998 as compared to 1997 was primarily due
to energy and engineering claims reported in the fourth quarter which were
heavily reinsured, and the Lloyd's "reinsurance to close" loss portfolio for
the 1996 underwriting year. 
                
     At December 31, 1996, $17.0 million in loans were outstanding at an
interest rate of 6.5% and letters of credit with an aggregate face amount of
$27.1 million were issued under the Company's bank credit facility. A December
11, 1997 amendment to the bank credit facility increased the revolving credit
loan facility from $20 million to $25 million. At December 31, 1997, $20 million
in loans were outstanding under the revolving credit loan facility at an
interest rate of 6.9% and letters of credit with an aggregate face amount of
$26.0 million were issued under the letter of credit facility.

         On November 21, 1998, the Company entered into a new bank credit
facility which replaced the prior facility. The new credit facility provides a
$25 million revolving line of credit at an interest rate of either, at the
Company's election, the base commercial lending rate of one of the banks or at
LIBOR plus 0.875%. The line of credit facility reduces each quarter by amounts
between $1.0 million and $2.25 million beginning January 1, 2000 until it
terminates on November 19, 2003. At December 31, 1998, $23.5 million in loans
were outstanding under the revolving line of credit facility at an interest rate
of 5.9%. The credit facility also provides for a $60 million letter of credit
facility which is utilized primarily by NCUL and Millennium to participate in
Lloyd's Syndicate 1221 managed by MTC. At December 31, 1998, letters of credit
with an aggregate face amount of $29.2 million were issued under the letter of
credit facility. No letters of credit have been drawn upon.

     Total stockholders' equity was $143.3 million at December 31, 1998, a 9.2%
increase for the year primarily as the result of the Company's earnings in 1998.

     The Company was within the usual values for all NAIC's IRIS ratios as of
December 31, 1997 and 1998.

     The Company's reinsurance has been placed with various U.S. companies rated
"A-" or better by A.M. Best Company, Inc., as well as with foreign insurance
companies and with selected syndicates of Lloyd's. Certain syndicates at Lloyd's
("Loss Syndicates") and the Lloyd's market as a whole have reported significant
losses in recent years. The Company has not placed any material amounts of
reinsurance with these Loss Syndicates. Pursuant to the implementation of
Lloyd's Plan of Reconstruction and Renewal, a significant portion of the
Company's recoverables from the Loss Syndicates are now reinsured by Equitas (a
separate UK authorized reinsurance company established to reinsure outstanding
liabilities of all Lloyd's members for all risks written in the 1992 or prior
years of account).

     The Company believes that the cash flow generated by the operating
activities of the Company's subsidiaries will provide sufficient funds for the
Company to meet its liquidity needs over the next twelve months. Beyond the next
twelve months, cash flow available to the Company may be influenced by a 


                                       20
<PAGE>   22

variety of factors, including general economic conditions and conditions in the
insurance and reinsurance markets, as well as fluctuations from year to year in
claims experience.

ECONOMIC CONDITIONS

     The Company is a specialty insurance company and periods of moderate
economic recession or inflation tend not to have a significant direct affect on
the Company's underwriting operations. They do, however, impact the Company's
investment portfolio. A decrease in interest rates will tend to decrease the
Company's yield on its invested assets.

     Management considers the potential impact of these economic trends in
estimating loss reserves. Management believes that the underwriting controls it
maintains, and the fact that the majority of the Company's business is in lines
of insurance which have relatively short loss payout patterns, assist in
estimating ultimate claim costs more accurately and lessen the potential adverse
impact of the economy on the Company.

YEAR 2000 COMPLIANCE

     Overview of the Year 2000 Issue

     The "Year 2000 Issue" or "Y2K Issue" is a term used to describe the
predicted problems that may arise as a result of the inability of some computer
programs and embedded chips to distinguish dates beginning with 19 from dates
beginning with 20. This Y2K Issue could result in a variety of potential
problems for all businesses from inaccurate processing of dates and
date-sensitive calculations to system failures and disruptions in operations.
The Company has considered the Y2K Issue a high priority since 1996 and has
taken certain steps to address this important aspect of its operations.

     The Company's State of Readiness

     The Company's preparation for Y2K Issues has been ongoing for over two
years and continues to proceed. The Company formed a Y2K Executive Committee
comprised of senior management in all areas of our operations including
financial, underwriting, claims and information technology departments. The
Executive Committee has addressed the Y2K Issue from three different
perspectives: (1) internal hardware/software compliance; (2) third-party vendor
compliance; and (3) the Company's underwriting and claims position.

     The Company's overall Y2K plan of action consists of at least five phases.
Phase one was an initial awareness stage that involved the identification and
inventory of information technology and non-information technology systems that
are critical to the operation of the Company. This stage included developing a
listing of material business relationships with hardware/software providers and
third-party vendors. The Company believes this information gathering stage is
now 100% complete. Nevertheless, the Company continues to review this area to
determine whether any supplemental information may be necessary.

     In phase two, the results of the awareness stage were assessed to determine
what actions should be taken to address Y2K compliance. During this stage, the
Company analyzed what items were believed to have a significant risk to any
aspect of the Company's operations. The Company believes this assessment is now
100% complete, but continues to evaluate its assessment to determine whether any
additional actions should be taken to protect the Company.

     Phase three consists of the repair and/or replacement of material systems
that were determined not to be Y2K compliant. With respect to internal
hardware/software compliance, the Company has recently 


                                       21
<PAGE>   23

replaced its underwriting, claims and accounting systems with state-of-the-art
systems that are Y2K compliant. The conversion of existing data from our old
systems is 100% complete and the new systems are operational. The Company has
also upgraded all personal desktop computers with new high quality Y2K compliant
computers.

     Phase four consists of testing of our new computer systems to verify they
are Y2K compliant. This process is ongoing and at present is approximately 60%
complete. The Company will continue the testing process, and anticipates
completing all testing by June 30, 1999. In addition, the Company has requested
Y2K compliance certifications from its significant third-party vendors.
Certifications have been received from our new software and hardware providers.
Each reply will be evaluated to determine the Company's future relationship with
each respondent and whether any remedial action is necessary.

     Phase five calls for the Company to develop contingency plans in the event
some aspects of either the internal systems or third-party vendors are adversely
effected by a Y2K situation. Since the Company's internal system testing is
incomplete and all third-party vendors have not provided Y2K compliance
certifications, the contingency plans specific to Y2K are still evolving.
However, in the normal course of business, the Company maintains detailed
contingency plans designed to protect and secure its business records and data
in the event of a business interruption. Also, the Company has back-up
procedures that do not rely upon computers. In the event of an interruption due
to an outside vendor being non-Y2K compliant, and assuming that the Company's
phone and fax lines and mail delivery services are operational, the Company may
operate its business without material effect. Much of the Company's day-to-day
operation depends upon client contact and claims service. The Company has the
ability to issue manual checks to our clients and vendors which will allow the
Company to continue normal business operations in the event of a short-term
computer shutdown.

     Since the Company operates in New York, Houston, Seattle, San Francisco and
London, if one office does experience a business interruption, phone and fax
communications may be re-routed to the other offices. This will ensure
uninterrupted service for our clients. While every possible scenario cannot be
anticipated, the Company believes it has instituted contingency measures to
adequately address most issues that may arise.

     The Costs to Address the Company's Y2K Issues

     To date, the Company has spent approximately $1.2 million on the
replacement of the underwriting, claims and accounting systems that needed to be
replaced regardless of the Y2K Issue. Prospectively, the Company estimates the
cost of completing testing and potential contingency action to be approximately
$300,000. These costs will be expended out of working capital, and the Company
believes such prospective costs will not have a material effect on liquidity or
financial condition. No information technology projects have been deferred due
to the Company's Y2K efforts and expenditures.

     The Risks of the Company's Y2K Issues

     The failure to resolve its Y2K Issues could result in the interruption of
normal business operations and could materially affect the Company's financial
condition. However, the Company believes that its past and continuing efforts
will adequately address its internal Y2K Issues. Many factors outside the
company's control could effect its Y2K readiness. Due to the uncertainty of how
potential Y2K problems may effect the business community in general, the Company
is unable to determine at this time whether the consequences of Y2K
non-compliance may have a material impact on the Company's results of operation,
liquidity or financial condition. Also, there can be no assurance that the
systems of other companies on which the Company's systems rely will also be
timely converted or that any such failure to convert by another company would
not have an adverse effect on the Company's systems.


                                       22
<PAGE>   24

     The Company is also at risk from its policyholders' claims for insurance
coverage due to their Y2K exposures. Although the Company has not received any
insurance claims based on losses resulting from Y2K Issues, there can be no
assurance that policyholders will not suffer losses of this type and seek
compensation under the Company's insurance policies. If any claims are made, the
Company's obligations, if any, will depend on the facts and circumstances of the
claim and provisions of the policy. At this time, the Company is unable to
determine whether an adverse impact, if any, in connection with the foregoing
circumstances would be material.

     The aforementioned Year 2000 discussion contains forward-looking statements
about matters that are inherently difficult to predict with respect to
completion of Year 2000 compliance and the effect on the Company. Such
statements are made under the safe harbor provisions of the Private Securities
Litigation Reform Act of 1995 and involve a number of risks and uncertainties
that could materially affect future results.


QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

     Market Risk

     Market risk is the risk of loss arising from adverse changes in market
rates and prices, such as interest rates, foreign currency exchange rates, and
other relevant market rate or price changes. Market risk is directly influenced
by the volatility and liquidity in the markets in which the related underlying
assets are traded. The following is a discussion of the Company's primary market
risk exposures and how those exposures are currently managed as of December 31,
1998. The Company's market risk sensitive instruments are entered into for
purposes other than trading.

     The carrying value of the Company's investment portfolio as of December 31,
1998 was $254.4 million of which 97.7% was invested in fixed maturity
securities. The primary market risk to the investment portfolio is interest rate
risk associated with investments in fixed maturity securities. The Company's
exposure to equity price risk and foreign exchange risk is not significant. The
Company has no commodity risk.

     For fixed maturity securities, short-term liquidity needs and the potential
liquidity needs of the business are key factors in managing the portfolio. The
portfolio duration relative to the liabilities' duration is primarily managed
through investment transactions.

     For the Company's investment portfolio, there were no significant changes
in the Company's primary market risk exposures or in how those exposures are
managed compared to the year ended December 31, 1997. The Company does not
currently anticipate significant changes in its primary market risk exposures or
in how those exposures are managed in future reporting periods based upon what
is known or expected to be in effect in future reporting periods.

     The Company is subject to interest rate risk on its notes payable to banks
as changes in interest rates would impact future earnings, however, this
interest rate risk exposure is not considered significant.

     Sensitivity Analysis

     Sensitivity analysis is defined as the measurement of potential loss in
future earnings, fair values or cash flows of market sensitive instruments
resulting from one or more selected hypothetical changes in interest rates and
other market rates or prices over a selected time. In the Company's sensitivity
analysis model, a hypothetical change in market rates is selected that is
expected to reflect reasonably possible near-term changes in those rates. The
term "near-term" means a period of time going forward up to one year 


                                       23
<PAGE>   25

from the date of the consolidated financial statements. Actual results may
differ from the hypothetical change in market rates assumed in this disclosure,
especially since this sensitivity analysis does not reflect the results of any
actions that would be taken by the Company to mitigate such hypothetical losses
in fair value.

     In this sensitivity analysis model, the Company uses fair values to measure
its potential loss. The sensitivity analysis model includes fixed maturities and
short-term investments. The primary market risk to the Company's market
sensitive instruments is interest rate risk. The sensitivity analysis model uses
a 100 basis point change in interest rates to measure the hypothetical change in
fair value of financial instruments included in the model.

     For invested assets, modified duration modeling is used to calculate
changes in fair values. Durations on invested assets are adjusted for call, put
and interest rate reset features. Duration on tax exempt securities is adjusted
for the fact that the yield on such securities is less sensitive to changes in
interest rates compared to Treasury securities. Invested asset portfolio
durations are calculated on a market value weighted basis, including accrued
investment income, using holdings as of December 31, 1998.

     The sensitivity analysis model used by the Company produces a loss in fair
value of market sensitive instruments of $12.9 million based on a 100 basis
point increase in interest rates as of December 31, 1998. This loss amount only
reflects the impact on an interest rate increase on the fair value of the
Company's fixed income and short-term securities, which constitute approximately
42% of total assets as of December 31, 1998.

     Based on the sensitivity analysis model used by the Company, the loss in
fair value of market sensitive instruments, as a result of a 100 basis point
increase in interest rates as of December 1998, is not material.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

     The consolidated financial statements required in response to this section
are submitted as part of Item 14(a) of this report.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND 
        FINANCIAL DISCLOSURE

     None.

PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     Information concerning the directors and the executive officers of the
Company is contained under "Election of Directors" in the Company's 1999 Proxy
Statement, which information is incorporated herein by reference.

ITEM 11. EXECUTIVE COMPENSATION

     Information concerning executive compensation is contained under
"Compensation of Directors and Executive Officers" in the Company's 1999 Proxy
Statement, which information is incorporated herein by reference.


                                       24
<PAGE>   26

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

     Information concerning the security ownership of the directors and officers
of the registrant is contained under "Election of Directors" in the Company's
1999 Proxy Statement, which information is incorporated herein by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     Information concerning relationships and related transactions of the
directors and officers of the Company is contained under "Certain Relationships
and Related Transactions" in the Company's 1999 Proxy Statement, which
information is incorporated herein by reference.

PART IV

ITEM 14. EXHIBITS, FINANCIAL SCHEDULES AND REPORTS ON FORM 8-K

     (a) The following documents are filed as part of this report:

     1.   FINANCIAL STATEMENTS AND SCHEDULES: The financial statements and
          schedules listed in the accompanying Index to Consolidated Financial
          Statements and Schedules on page F-1.

     2.   EXHIBITS: The exhibits are listed on the accompanying Index to
          Exhibits on the page which immediately follows page S-8. The Exhibits
          include the management contracts and compensatory plans or
          arrangements required to be filed as exhibits to this Form 10-K by
          Item 601(a)(10)(iii) of Regulation S-K.

          (b)  Reports on Form 8-K. There were no reports filed on Form 8-K
               during the fourth quarter of 1998.

                                       25
<PAGE>   27

                                   SIGNATURES

     Pursuant to the requirements of Section 13 or 15(d) 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.

                                               The Navigators Group, Inc.
                                               (Registrant)


Dated:  March 29, 1999                         By:/s/ BRADLEY D. WILEY    
                                                  ------------------------
                                                  Bradley D. Wiley
                                                  Senior Vice President, CFO
                                                  and Secretary

     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
Registrant and in the capacities and on the dates indicated.


NAME                            TITLE                            DATE
- - ----                            -----                            ----

/s/ TERENCE N. DEEKS            Chairman, President and CEO      March 29, 1999
- - -----------------------------   (Principal Executive Officer)
Terence N. Deeks             

/s/ BRADLEY D. WILEY            Senior Vice President, CFO       March 29, 1999
- - -----------------------------   and Secretary                
Bradley D. Wiley                (Principal Financial Officer)

/s/ SALVATORE A. MARGARELLA     Vice President & Treasurer       March 29, 1999
- - -----------------------------   (Principal Accounting Officer)
Salvatore A. Margarella

/s/ ROBERT M. DEMICHELE         Director                         March 29, 1999
- - -----------------------------
Robert M. DeMichele

/s/ LEANDRO S. GALBAN, JR.      Director                         March 29, 1999
- - -----------------------------
Leandro S. Galban, Jr.

/s/ JOHN F. KNIGHT              Director                         March 29, 1999
- - -----------------------------
John F. Knight

/s/ MARC M. TRACT               Director                         March 29, 1999
- - -----------------------------
Marc M. Tract

/s/ WILLIAM D. WARREN           Director                         March 29, 1999
- - -----------------------------
William D. Warren

/s/ ROBERT F. WRIGHT            Director                         March 29, 1999
- - -----------------------------
Robert F. Wright


                                      26
<PAGE>   28

            INDEX TO CONSOLIDATED FINANCIAL STATEMENTS AND SCHEDULES


Independent Auditors' Report  ............................................  F-2

Consolidated Balance Sheets at December 31, 1998 and 1997  ...............  F-3

Consolidated Statements of Income for each of the years in the 
  three-year period ended December 31, 1998  .............................  F-4

Consolidated Statements of Stockholders' Equity for each of the years
  in the three-year period ended December 31, 1998  ......................  F-5

Consolidated Statements of Cash Flows for each of the years in the
  three-year period ended December 31, 1998  .............................  F-6

Notes to Consolidated Financial Statements  ..............................  F-7

SCHEDULES:

Schedule I     Summary of Consolidated Investments--other than
               investments in related parties  ...........................  S-1

Schedule II    Condensed Financial Information of Registrant  ............  S-2

Schedule III   Supplementary Insurance Information  ......................  S-5

Schedule IV    Reinsurance  ..............................................  S-6

Schedule V     Valuation and Qualifying Accounts  ........................  S-7

Schedule VI    Supplementary Insurance Information Concerning
               Property/Casualty Insurance Operations  ...................  S-8



                                      F-1
<PAGE>   29

                          INDEPENDENT AUDITORS' REPORT

The Board of Directors and Stockholders
The Navigators Group, Inc.

     We have audited the consolidated balance sheets of The Navigators Group,
Inc. and subsidiaries as of December 31, 1998 and 1997, and the related
consolidated statements of income, stockholders' equity, and cash flows for each
of the years in the three-year period ended December 31, 1998. In connection
with our audits of the consolidated financial statements, we also have audited
the consolidated financial statement schedules as listed in the accompanying
index. These consolidated financial statements and financial statement schedules
are the responsibility of the Company's management. Our responsibility is to
express an opinion on these consolidated financial statements and financial
statement schedules based on our audits.

     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

     In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of The
Navigators Group, Inc. and subsidiaries as of December 31, 1998 and 1997, and
the results of their operations and their cash flows for each of the years in
the three-year period ended December 31, 1998, in conformity with generally
accepted accounting principles. Also in our opinion, the related financial
statement schedules, when considered in relation to the basic consolidated
financial statements taken as a whole, present fairly, in all material respects,
the information set forth therein.



                                                    KPMG LLP


New York, New York
March 26, 1999


                                      F-2
<PAGE>   30

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                        (In thousands, except share data)

<TABLE>
<CAPTION>
                                                                                                                DECEMBER 31,
                                                                                                       ----------------------------
                                                                                                          1998               1997
                                                                                                       ---------          ---------
<S>                                                                                                    <C>                <C>      
                                                      ASSETS
Investments and cash:
  Fixed maturities, available-for-sale, at fair value
    (amortized cost: 1998, $232,021; 1997, $218,418) .........................................         $ 240,233          $ 226,834
  Equity securities, available-for-sale, at fair value (cost: 1998, $6,506;
    1997, $4,557) ............................................................................             7,400              6,132
  Short-term investments, at cost which approximates fair value ..............................             5,647             22,579
  Cash .......................................................................................             2,807              1,251
  Other investments ..........................................................................             1,145              1,776
                                                                                                       ---------          ---------
         Total investments and cash ..........................................................           257,232            258,572

Premiums in course of collection .............................................................            76,321             45,847
Commissions receivable .......................................................................             7,823              6,434
Accrued investment income ....................................................................             3,219              3,121
Prepaid reinsurance premiums .................................................................            25,699             20,405
Reinsurance receivable on paid and unpaid losses and loss adjustment expenses ................           200,017            147,104
Federal income tax recoverable ...............................................................               398                164
Net deferred Federal and foreign income tax benefit ..........................................             8,002              7,994
Deferred policy acquisition costs ............................................................             4,303              5,403
Other assets .................................................................................             9,072              6,163
                                                                                                       ---------          ---------

         Total assets ........................................................................         $ 592,086          $ 501,207
                                                                                                       =========          =========

                                       LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities:
  Reserves for losses and loss adjustment expenses ...........................................         $ 342,444          $ 278,432
  Unearned premium ...........................................................................            51,295             48,659
  Reinsurance balances payable ...............................................................            24,858             16,539
  Notes payable to banks .....................................................................            23,500             20,000
  Deferred state and local income tax ........................................................             1,152              1,184
  Note payable to stockholder ................................................................                --                942
  Accounts payable and other liabilities .....................................................             5,571              4,209
                                                                                                       ---------          ---------
         Total liabilities ...................................................................           448,820            369,965
                                                                                                       ---------          ---------

Commitments and contingencies ...............................................................

Stockholders' equity:
  Preferred stock, $.10 par value, authorized 1,000,000 shares, none issued ..................                --                 --
  Common stock, $.10 par value, authorized 10,000,000 shares,
    issued and outstanding 8,447,926 in 1998 and 8,368,167 in 1997 ...........................               845                837
  Additional paid-in capital .................................................................            39,332             38,119
  Accumulated other comprehensive income:
    Net unrealized gains on securities available-for-sale (net of tax of
    $3,187 in 1998 and $3,497 in 1997) .......................................................             5,919              6,494
     Foreign currency translation adjustment, net of tax .....................................              (172)               (61)
  Retained earnings ..........................................................................            97,342             85,853
                                                                                                       ---------          ---------
         Total stockholders' equity ..........................................................           143,266            131,242
                                                                                                       ---------          ---------
             Total liabilities and stockholders' equity ......................................         $ 592,086          $ 501,207
                                                                                                       =========          =========
</TABLE>

          See accompanying notes to consolidated financial statements.


                                      F-3
<PAGE>   31

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES
                        CONSOLIDATED STATEMENTS OF INCOME
                   (In thousands, except net income per share)

<TABLE>
<CAPTION>
                                                                                               YEAR ENDED DECEMBER 31,
                                                                                  -------------------------------------------------
                                                                                     1998                 1997               1996
                                                                                  ---------           ---------           ---------
<S>                                                                               <C>                 <C>                 <C>      
Revenues:
  Net earned premium ..................................................           $  91,203           $  85,002           $  78,731
  Commission income ...................................................               6,569               5,083               8,798
  Net investment income ...............................................              15,209              14,435              13,614
  Net realized capital gains ..........................................               1,431               2,827                 503
  Other income ........................................................                 708                 870               1,142
                                                                                  ---------           ---------           ---------
         Total revenues ...............................................             115,120             108,217             102,788
                                                                                  ---------           ---------           ---------

Operating expenses:
  Net losses and loss adjustment expenses incurred ....................              62,322              52,620              48,977
  Commission expense ..................................................              11,864              14,938              12,171
  Other operating expenses ............................................              24,264              22,231              20,417
  Interest expense ....................................................               1,517               1,244               1,737
                                                                                  ---------           ---------           ---------
         Total operating expenses .....................................              99,967              91,033              83,302
                                                                                  ---------           ---------           ---------

Equity income in affiliated company, net of tax .......................                  --                  --               1,388

Income before income tax expense ......................................              15,153              17,184              20,874

Income tax expense (benefit):
    Current ...........................................................               3,100               3,879               4,280
    Deferred ..........................................................                 564                 759                (158)
                                                                                  ---------           ---------           ---------
         Total income tax expense .....................................               3,664               4,638               4,122
                                                                                  ---------           ---------           ---------

  Net income ..........................................................           $  11,489           $  12,546           $  16,752
                                                                                  =========           =========           =========

Net income per common share:
   Basic  ..............................................................          $    1.37           $    1.51           $    2.04
   Diluted  ............................................................          $    1.36           $    1.50           $    2.02

Average common shares outstanding:
   Basic................................................................              8,414               8,296               8,197
   Diluted  ............................................................              8,459               8,385               8,286
</TABLE>


          See accompanying notes to consolidated financial statements.


                                      F-4
<PAGE>   32


                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES
                 CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                                 (In thousands)

<TABLE>
<CAPTION>
                                                                                    YEAR ENDED DECEMBER 31,
                                                           -------------------------------------------------------------------------
                                                                     1998                     1997                      1996
                                                                     ----                     ----                      ----
<S>                                                        <C>          <C>          <C>          <C>         <C>         <C>      
Preferred Stock
    Balance at beginning and end of year ...............   $      --                 $      --                $      --
                                                           =========                 =========                =========
Common stock
     Balance at beginning of year ......................   $     837                 $     824                $     817
     Issuance of common stock during the year ..........           8                        13                        7
                                                           ---------                 ---------                ---------
     Balance at end of year ............................   $     845                 $     837                $     824
                                                           =========                 =========                =========

Additional paid-in capital
     Balance at beginning of year ......................   $  38,119                 $  36,202                $  35,321
     Issuance of common stock during the year ..........       1,213                     1,917                      881
                                                           ---------                 ---------                ---------
     Balance at end of year ............................   $  39,332                 $  38,119                $  36,202
                                                           =========                 =========                =========

Retained earnings
     Balance at beginning of year ......................   $  85,853                 $  73,307                $  56,555
     Net income ........................................      11,489    $  11,489       12,546    $  12,546      16,752   $  16,752
                                                           ---------    ---------    ---------    ---------   ---------   ---------
     Balance at end of year ............................   $  97,342                 $  85,853                $  73,307
                                                           =========                 =========                =========

Accumulated Other Comprehensive Income
    Balance at beginning of year .......................   $   6,433                 $   5,209                $   6,383
    Net unrealized gains (losses) on securities, net of
     tax (benefit) expense of ($310), $734, and
     ($615) in 1998, 1997 and 1996, respectively (1) ...                     (575)                    1,363                  (1,142)
    Foreign currency loss net of tax benefit
     of $60, $75 and $17 in 1998, 1997 and 1996,
     respectively ......................................                    (111)                      (139)                    (32)
                                                                        ---------                 ---------               ---------
   Other comprehensive income/(loss) ...................        (686)        (686)       1,224        1,224      (1,174)     (1,174)
                                                           ---------    ---------    ---------    ---------   ---------   ---------
    Comprehensive income ...............................                $  10,803                 $  13,770               $  15,578
                                                                        =========                 =========               =========

    Balance at end of year .............................       5,747                     6,433                    5,209
                                                           =========                 =========                =========

Total stockholders' equity at end of year ..............   $ 143,266                 $ 131,242                $ 115,542
                                                           =========                 =========                =========

(1) Disclosure of reclassification amount:
      Unrealized holding gains arising during period ...                $     628                 $   3,409               $    (815)
      Less: reclassification adjustment for net gains
         included in net income ........................                   (1,203)                   (2,046)                   (327)
                                                                        ---------                 ---------               --------- 
      Net unrealized gains (losses) on securities ......                $    (575)                $   1,363               $  (1,142)
                                                                        =========                 =========               ========= 
</TABLE>

See accompanying notes to consolidated financial statements.


                                      F-5
<PAGE>   33

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (In thousands)

<TABLE>
<CAPTION>
                                                                                                  YEAR ENDED DECEMBER 31,
                                                                                       --------------------------------------------
                                                                                         1998               1997              1996
                                                                                       --------          --------          --------
<S>                                                                                    <C>               <C>               <C>     
 Operating activities:
    Net income ...............................................................         $ 11,489          $ 12,546          $ 16,752
    Adjustments to reconcile net income to net
       cash provided by (used in) operating activities:
      Depreciation & amortization ............................................              833               526               593
      Reinsurance receivable on paid and unpaid
       losses and loss adjustment expenses ...................................          (52,913)           (3,759)            4,012
      Reserve for losses and loss adjustment
       expenses ..............................................................           64,012             8,831            (4,253)
      Prepaid reinsurance premiums ...........................................           (5,294)           (8,865)           (1,726)
      Unearned premium .......................................................            2,636            14,743             7,163
      Premiums in course of collection .......................................          (30,474)          (10,738)          (17,137)
      Commissions receivable .................................................            2,272               348              (734)
      Deferred policy acquisition costs ......................................            1,100            (1,746)           (1,134)
      Accrued investment income ..............................................              (59)              181                47
      Reinsurance balances payable ...........................................            8,319             4,958             5,169
      Federal income tax .....................................................             (261)             (131)           (1,276)
      Net deferred Federal and foreign income tax ............................              595               683               (57)
      Net realized capital (gains) ...........................................           (1,431)           (2,827)             (503)
      Other ..................................................................           (3,813)           (2,253)              349
                                                                                       --------          --------          --------
        Net cash provided by (used in) operating activities ..................           (2,989)           12,497             7,265
                                                                                       --------          --------          --------

 Investing activities:
    Fixed maturities, available-for-sale
      Redemptions and maturities .............................................           24,074             9,745            14,683
      Sales ..................................................................           28,664            75,368            35,273
      Purchases ..............................................................          (66,373)          (93,679)          (57,212)
    Equity securities, available-for-sale
      Sales ..................................................................            3,285             9,624             2,340
      Purchases ..............................................................           (3,083)           (4,017)           (3,891)
    Payment for purchase of MTC net of cash acquired .........................           (5,321)               --                --
    Payable for securities purchased .........................................            2,832            (2,815)            1,268
    Net sales (purchases) of short-term investments ..........................           16,932           (10,757)           (4,533)
    Other investments ........................................................            1,262              (132)              820
    Purchase of property and equipment .......................................           (1,166)             (974)             (273)
                                                                                       --------          --------          --------
      Net cash provided by (used in) investing activities ....................            1,106           (17,637)          (11,525)
                                                                                       --------          --------          --------
Financing activities:
    Proceeds from bank loan ..................................................            3,500             3,000                --
    Repayment of bank loan ...................................................             (340)               --            (2,500)
    Proceeds from exercise of stock options ..................................            1,221             1,931               887
    Repayment of note payable to stockholder .................................             (942)               --                -- 
                                                                                       --------          --------          --------
      Net cash provided by (used in) financing activities ....................            3,439             4,931            (1,613)
                                                                                       --------          --------          --------
Increase (decrease) in cash ..................................................            1,556              (209)           (5,873)
Cash at beginning of year ....................................................            1,251             1,460             7,333
                                                                                       --------          --------          --------
Cash at end of year ..........................................................         $  2,807          $  1,251          $  1,460
                                                                                       ========          ========          ========

Federal income tax paid ......................................................         $  3,200          $  3,200          $  4,928
State and local income tax paid ..............................................              399               880               307
Interest paid ................................................................            1,605             1,222             2,069
</TABLE>

          See accompanying notes to consolidated financial statements.


                                      F-6
<PAGE>   34

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1.  ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     The accompanying consolidated financial statements consisting of the
accounts of The Navigators Group, Inc., a Delaware holding company, and its
fourteen wholly owned subsidiaries, are prepared on the basis of generally
accepted accounting principles. Unless the context otherwise requires, the term
"Company" as used herein means The Navigators Group, Inc. and its subsidiaries.
All significant intercompany transactions and balances are eliminated. Certain
amounts for prior years have been reclassified to conform to the current year's
presentation.

     The Company's two insurance subsidiaries are Navigators Insurance Company
("Navigators Insurance") and NIC Insurance Company ("NIC"). Navigators Insurance
is the Company's largest insurance subsidiary and has been active since 1983. It
specializes principally in underwriting marine insurance. NIC, a wholly owned
subsidiary of Navigators Insurance, began operations in 1990. It underwrites a
small book of surplus lines insurance in certain states and, pursuant to an
intercompany reinsurance pooling agreement, cedes 100% of its gross direct
writings from this business to Navigators Insurance in exchange for assuming 10%
of Navigators Insurance's net premium. Navigators Insurance and NIC are
collectively referred to herein as the "Insurance Companies".

     Navigators Corporate Underwriters Limited ("NCUL"), a subsidiary formed in
the fourth quarter of 1996, is admitted to underwrite marine and related lines
of business at Lloyd's of London ("Lloyd's") as a corporate member with limited
liability.

     Six of the Company's subsidiaries are underwriting management companies:
Somerset Marine, Inc., Somerset Insurance Services of Texas, Inc., Somerset
Insurance Services of California, Inc., Somerset Insurance Services of
Washington, Inc., Somerset Marine (UK) Limited ("Somerset UK") and Somerset Asia
Pacific Pty. Limited ("Somerset Asia") (collectively, the "Somerset Companies").
The Somerset Companies produce, manage and underwrite insurance and reinsurance
for Navigators Insurance, NIC and six unaffiliated insurance companies.

     Somerset Asia was formed in the third quarter of 1996 and operates from an
office in Sydney, Australia. This office concentrated on marine, onshore energy,
engineering and construction business primarily in Indonesia, Thailand,
Malaysia, Taiwan, China and Vietnam. Somerset Asia began writing business in
early 1997 and is supported by Somerset Services Pte. Limited which provides
loss prevention consultancy to Somerset Asia's assureds and producers. Somerset
Services Pte. Limited, a wholly owned subsidiary of Somerset Asia, was formed in
September 1997 and is located in Singapore. As of January 1, 1999, Somerset Asia
may write a small amount of marine business only. The onshore energy,
engineering and construction business will be underwritten through the Company's
Lloyd's facilities.

     Somerset UK, formed in the fourth quarter of 1996, concentrated on marine,
aviation, onshore energy, engineering and construction business. Navigators
Insurance was authorized to operate an United Kingdom ("UK") Branch on October
22, 1997. Somerset UK began producing business in the fourth quarter of 1997 for
the UK Branch of Navigators Insurance (the "UK Branch"). Effective January 1,
1999, Somerset UK will produce only marine business for the UK Branch. The UK
Branch may participate in the onshore energy, engineering and construction
business to be written through the Company's Lloyd's facilities in 1999.


                                      F-7
<PAGE>   35

     Navigators Holdings (UK) Limited was formed on September 15, 1997 as a
holding company for the Company's UK subsidiaries.

     During 1998, the Company merged Somerset Georgia, Inc. into Somerset
Marine, Inc. The Company also owns Somerset Marine Aviation Property Managers,
Inc., an inactive subsidiary.

     The Company's revenue is primarily comprised of premiums, commissions and
investment income. The Insurance Companies derive the majority of their business
from the Somerset Companies through either business written specifically for the
Insurance Companies or through Navigators Insurance's participation in insurance
pools managed by the Somerset Companies. The insurance business and operations
of the Insurance Companies are managed by Somerset Marine, Inc.

     In January 1998, the Company purchased 100% of Mander, Thomas & Cooper
(Underwriting Agencies) Limited ("MTC"), a Lloyd's of London marine underwriting
managing agency and its wholly owned subsidiary, Millennium Underwriting Limited
("Millennium"). The purchase price consists of initial cash payments plus future
performance contingent consideration. The purchase was funded through a bank
loan and working capital. The acquisition has been accounted for under the 
purchase method of accounting. The purchase price was approximately $5,000,000.
In addition, the purchase agreement requires payment of additional
consideration based on the performance of Lloyd's Syndicate 1221 managed by
MTC. Goodwill of approximately $4,000,000 has been recorded to date in
connection with the transaction. The goodwill is being amortized over 20 years. 
Additional goodwill may be recorded in future years when the amount of the 
future performance contingencies are determinable.

INVESTMENTS

     Investments are classified into one of three categories. Held-to-maturity
securities are debt securities that the Company has the positive intent and
ability to hold to maturity and are reported at amortized cost. Trading
securities are debt and equity securities that are purchased and held
principally for the purpose of selling them in the near term and are reported at
fair value, with unrealized gains and losses included in earnings.
Available-for-sale securities are debt and equity securities not classified as
either held-to-maturity securities or trading securities and are reported at
fair value, with unrealized gains and losses excluded from earnings and reported
in other comprehensive income as a separate component of stockholders' equity.
As of December 31, 1998 and 1997, all fixed maturity and equity securities held
by the Company were classified as available-for-sale. Premiums and discounts on
fixed maturity securities are amortized into interest income over the life of
the security under the interest method.

     Short-term investments are carried at cost, which approximates fair value.
Short-term investments mature within one year from the purchase date.

     Realized gains and losses on sales of investments are determined on the
basis of the specific identification method. When a decline in fair value of
investments is considered to be "other than temporary," the investments are
written down to net realizable value. The write down is considered a realized
loss in the consolidated statement of income.


                                      F-8
<PAGE>   36

PREMIUM REVENUES

     Insurance and reinsurance premiums are recognized as income by the
Insurance Companies during the terms of the related policies based on reports
received from the Somerset Companies and ceding reinsurers. Unearned premium
reserves are established to cover the unexpired portion of written premiums.

COMMISSION INCOME

     Commission income, based on estimated gross premiums earned from
non-affiliated insurers, is recognized over the terms of the related policies.
Contingent commission income, based on estimated net underwriting results from
non-affiliated insurers, is included in commission income in the accompanying
consolidated financial statements. Changes in prior estimates of commission
income and contingent commission income are recorded when such changes become
known.

DEFERRED POLICY ACQUISITION COSTS

     Costs of acquiring business which vary with and are directly related to the
production of business are deferred and amortized ratably over the period that
the related premiums are recognized as earned. Such costs primarily include
commission expense, management fees and premium taxes. The method of computing
deferred policy acquisition costs limits the deferral to their estimated net
realizable value based on the related unearned premiums and takes into account
anticipated losses and loss adjustment expenses based on historical and current
experience and anticipated investment income.

RESERVE FOR LOSSES AND LOSS ADJUSTMENT EXPENSES

     Unpaid losses and loss adjustment expenses are determined on an individual
basis for claims reported on direct business, for insureds, from reports
received from ceding insurers for insurance assumed from such insurers and on
estimates based on Company and industry experience for incurred but not reported
claims and loss adjustment expenses. The provision for unpaid losses and loss
adjustment expenses has been established to cover the estimated unpaid cost of
claims incurred. Such estimates are regularly reviewed and updated and any
resulting adjustments are included in income currently. Management believes 
that the unpaid losses and loss adjustment expenses are adequate to cover the 
ultimate unpaid claims incurred, however, such provisions are necessarily based
on estimates and, accordingly, no representation is made that the ultimate 
liability will not exceed such amounts.

NET INCOME PER SHARE

     The Company adopted the Financial Accounting Standards Board's ("FASB")
Statement of Financial Accounting Standards ("SFAS") No. 128, Earnings Per
Share, on December 31, 1997. SFAS No. 128 supersedes APB Opinion No. 15,
Earnings Per Share, and replaces primary earnings per share and fully diluted
earnings per share with basic earnings per share and diluted earnings per share,
respectively.

REINSURANCE CEDED

     Reinsurance ceded which transfers risk, premiums, commissions and
recoveries on losses incurred is reflected as reductions of the respective
income and expense accounts. Unearned premiums ceded and estimates of amounts
recoverable from reinsurers on paid and unpaid losses are reflected as assets.


                                      F-9
<PAGE>   37

DEPRECIATION AND AMORTIZATION

     Depreciation of furniture and fixtures and electronic data processing
equipment is provided over the estimated useful lives of the respective assets,
ranging from 3 to 5 years, using the straight-line method. Amortization of
leasehold improvements is provided over the estimated lives of the leases using
the straight-line method. 

GOODWILL
     
     Goodwill was $3.8 million at December 31, 1998, net of accumulated
amortization of $ 203,000.  There was no goodwill in 1997.  The 1998
amortization expense was $203,000.

     The Company regularly evaluates the recoverability of goodwill and other
acquired intangible assets. The carrying value of such assets would be reduced
through a direct write-off if, in management's judgment, it was probable that
projected future operating income, before amortization of goodwill, would not be
sufficient on an undiscounted basis to recover the carrying value.

FEDERAL INCOME TAXES

     The Company files a consolidated Federal income tax return with its U.S.
subsidiaries. The Company applies the asset and liability method of accounting
for income taxes. Under the asset and liability method, deferred tax assets and
liabilities are recognized for the future tax consequences attributable to
differences between the financial statement carrying amounts of existing assets
and liabilities and their respective tax bases. Deferred tax assets and
liabilities are measured using enacted tax rates expected to apply to taxable
income in the years in which those temporary differences are expected to be
recovered or settled. The effect on deferred tax assets and liabilities of a
change in tax rates is recognized in income in the period that includes the
enactment date.

USE OF ESTIMATES

     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from these estimates.

ADOPTION OF ACCOUNTING STANDARDS

     Effective January 1, 1998, the Company adopted SFAS No. 130 Reporting
Comprehensive Income, and SFAS No. 131 Disclosures about Segments of an
Enterprise and Related Information. SFAS 130 establishes standards for reporting
comprehensive income and its components, in general purpose financial
statements. SFAS 131 establishes standards for reporting information about
operating segments. Prior period comparative information has been restated to
conform with SFAS 130 and 131, which had no impact on the Company's results of
operations or financial condition. In connection with the adoption of SFAS 131,
the Company has determined that it has three operating segments.

FUTURE APPLICATION OF ACCOUNTING STANDARDS

     SFAS No. 133, Accounting for Derivative Instruments and Hedging Activities,
was issued in June 1998 and establishes accounting and reporting standards for
derivative instruments, including certain derivative instruments embedded in
other contracts, (collectively referred to as derivatives) and for hedging
activities. It requires that an entity recognize all derivatives as either
assets or liabilities in the statement of 


                                      F-10
<PAGE>   38

financial position and measure those instruments at fair value. This statement
is effective for all fiscal quarters of fiscal years beginning after June 15,
1999, earlier application is encouraged, but it is permitted only as of the
beginning of any fiscal quarter that begins after issuance of this statement.
SFAS No. 133 is not applied retroactively to financial statements of prior
periods. The adoption of this statement will have no effect on the Company's
results of operations or financial condition.

     In December 1997, the American Institute of Certified Public Accountants
issued Statement of Position No. 97-3, Accounting by Insurance and Other
Enterprises for Insurance Related Assessments, ("SOP 97-3"). SOP 97-3, effective
for fiscal years beginning after December 15, 1998, establishes standards for
accounting for guaranty-fund and certain other insurance related assessments.
The adoption of this Statement is not expected to have a material effect on the
Company's results of operations or financial condition.

     SOP 98-5, Reporting the Costs of Start-Up Activities, was issued in April
1998 and requires costs of start-up activities and organization costs to be
expensed as incurred. SOP 98-5 is effective for fiscal years beginning after
December 15, 1998, and the initial application of this SOP will be reported as
the cumulative catch-up adjustment. Restatement of previously issued financial
statements is not allowed. The adoption of the SOP is not expected to have a
material effect on the Company's results of operations or financial condition.


                                      F-11
<PAGE>   39

NOTE 2.  INVESTMENTS

     The Company's fixed maturities and equity securities at December 31, 1998
and 1997 were as follows:

<TABLE>
<CAPTION>
                                                                                     GROSS             GROSS
                                                                   AMORTIZED      UNREALIZED          UNREALIZED           FAIR
DECEMBER 31, 1998                                                COST OR COST        GAINS             (LOSSES)            VALUE
- - -----------------                                                ------------      ---------          ---------          ---------
                                                                                           (In thousands)
<S>                                                               <C>               <C>                <C>                <C>      
Fixed maturities:
   U.S. Government, government
        agencies and authorities ........................         $  15,281         $     249          $     (68)         $  15,462
   States, municipalities and  political
        subdivisions ....................................           120,276             6,171                (57)           126,390
    Mortgage and asset backed ...........................            79,901             1,636               (204)            81,333
    Corporate bonds .....................................            15,540               420                 (4)            15,956
    Redeemable preferred stock ..........................             1,023                69                 --              1,092
                                                                  ---------         ---------          ---------          ---------

Total fixed maturities ..................................         $ 232,021         $   8,545          $    (333)         $ 240,233
                                                                  =========         =========          =========          =========

Equity securities - common stocks .......................         $   6,506         $   1,364          $    (470)         $   7,400
                                                                  =========         =========          =========          =========

<CAPTION>
                                                                                     GROSS             GROSS
                                                                   AMORTIZED      UNREALIZED         UNREALIZED            FAIR
DECEMBER 31, 1997                                                COST OR COST        GAINS            (LOSSES)             VALUE
- - -----------------                                                ------------      ---------          ---------          ---------
                                                                                           (In thousands)
<S>                                                               <C>               <C>                <C>                <C>      
Fixed maturities:
   U.S. Government, government
        agencies and authorities ........................         $   9,794         $     333          $     (10)         $  10,117
   States, municipalities and  political
        subdivisions ....................................           126,154             6,377                (57)           132,474
    Mortgage and asset backed ...........................            70,166             1,461                (14)            71,613
    Corporate bonds .....................................            11,279               261                 --             11,540
    Redeemable preferred stock ..........................             1,025                65                 --              1,090
                                                                  ---------         ---------          ---------          ---------

Total fixed maturities ..................................         $ 218,418         $   8,497          $     (81)         $ 226,834
                                                                  =========         =========          =========          =========

Equity securities - common stocks .......................         $   4,557         $   1,660          $     (85)         $   6,132
                                                                  =========         =========          =========          =========
</TABLE>

     The Company's fixed maturity securities by years of maturity were as
follows:

<TABLE>
<CAPTION>
            PERIOD FROM                                                              PERCENT                               PERCENT
          DECEMBER 31, 1998                                          FAIR              OF              AMORTIZED             OF
            TO MATURITY                                              VALUE          PORTFOLIO             COST            PORTFOLIO
            -----------                                           ---------         ---------          ---------          ---------
                                                                                       (Dollars in thousands)
<S>                                                               <C>                   <C>            <C>                    <C>   
One year or less ........................................         $   5,757               2.4%         $   5,710                2.5%
One year to five years ..................................            62,804              26.1             60,283               26.0
Five years to ten years .................................            64,504              26.8             60,996               26.2
More than ten years .....................................            25,835              10.8             25,131               10.9
Mortgage and asset backed ...............................            81,333              33.9             79,901               34.4
                                                                  ---------         ---------          ---------          ---------
               Total ....................................         $ 240,233             100.0%         $ 232,021              100.0%
                                                                  =========         =========          =========          =========
</TABLE>


                                      F-12
<PAGE>   40

     Due to the periodic repayment of principal, the mortgage and asset backed
securities are estimated to have an effective maturity of approximately six
years. Expected maturities may differ from contractual maturities because
issuers may have the right to call or prepay obligations with or without call or
prepayment penalties.

     Net investment income of the Company was derived from the following
sources:

<TABLE>
<CAPTION>
                                                                                             YEAR ENDED DECEMBER 31,
                                                                               ----------------------------------------------------
                                                                                  1998                 1997                   1996
                                                                               --------              --------              --------
                                                                                                  (In thousands)
<S>                                                                            <C>                   <C>                   <C>     
Fixed maturities .................................................             $ 13,784              $ 13,248              $ 12,481
Equity securities ................................................                  230                   292                   266
Short-term investments ...........................................                1,874                 1,613                 1,529
                                                                               --------              --------              --------
                                                                                 15,888                15,153                14,276
Investment expenses ..............................................                 (679)                 (718)                 (662)
                                                                               --------              --------              --------

Net investment income ............................................             $ 15,209              $ 14,435              $ 13,614
                                                                               ========              ========              ========
</TABLE>

     The Company's realized capital gains and losses were as follows:

<TABLE>
<CAPTION>
                                                                                             YEAR ENDED DECEMBER 31,
                                                                               ----------------------------------------------------
                                                                                  1998                 1997                   1996
                                                                               --------              --------              --------
                                                                                                  (In thousands)
<S>                                                                            <C>                   <C>                   <C>     
Fixed maturities:
    Gains ........................................................             $    768              $    786              $    479
    (Losses) .....................................................                  (99)                 (269)                 (375)
                                                                               --------              --------              --------
                                                                                    669                   517                   104
                                                                               --------              --------              --------
Equity securities and other investments:
    Gains ........................................................                1,196                 2,868                   456
    (Losses) .....................................................                 (434)                 (558)                  (57)
                                                                               --------              --------              --------
                                                                                    762                 2,310                   399
                                                                               --------              --------              --------

Net realized capital gains .......................................             $  1,431              $  2,827              $    503
                                                                               ========              ========              ========
</TABLE>

     At December 31, 1998 and 1997, fixed maturities with amortized values of
$6,791,000 and $6,775,000 respectively, were on deposit with various State
Insurance Departments. In addition, at December 31, 1998 and 1997, $135,962 and
$132,000, respectively, were on deposit with the Bank of England for Navigators
Insurance's UK Branch. Also, at December 31, 1998 and 1997, fixed maturities
with amortized values of $842,000 and $851,000, respectively, were pledged as
security under a reinsurance treaty.

     At December 31, 1997, the Company did not have a concentration of greater
than 10% of invested assets in a single issuer.

     In 1998, the Company disposed of its investment in Riverside Underwriters
Plc ("Riverside"). The Company recorded a loss on the disposal of (pound)250,000
(converted to $420,000). The remaining payments of (pound)300,000 and
(pound)225,000 are due in 1999 and 2000, respectively.


                                      F-13
<PAGE>   41

     Included in 1996 income was $1,388,000 of equity income, net of tax from
Riverside. Pretax earnings for 1998 and 1997 of $393,000 and $561,000 are
included in other income since the investment was no longer carried under the
equity method. The Company records its share of Riverside's earnings from
underwriting when sufficient information becomes available to provide reasonable
estimates of earned premiums and losses.

NOTE 3.  NOTES PAYABLE AND LOANS

     At December 31, 1996, $17.0 million in loans were outstanding at an
interest rate of 6.5% and letters of credit with an aggregate face amount of
$27.1 million were issued under the Company's bank credit facility. At December
11, 1997 amendment to the bank credit facility increased the revolving credit
loan facility from $20 million to $25 million. At December 31, 1997, $20 million
in loans were outstanding under the revolving credit loan facility at an
interest rate of 6.9% and letters of credit with an aggregate face amount of
$26.0 million were issued under the letter of credit facility.

         On November 21, 1998, the Company entered into a new bank credit
facility which replaced the prior facility. The new credit facility provides a
$25 million revolving line of credit at an interest rate of either, at the
Company's election, the base commercial lending rate of one of the banks or at
LIBOR plus 0.875%. The line of credit facility reduces each quarter by amounts
between $1.0 million and $2.25 million beginning January 1, 2000 until it
terminates on November 19, 2003. At December 31, 1998, $23.5 million in loans
were outstanding under the revolving line of credit facility at an interest rate
of 5.9%. The credit facility also provides for a $60 million letter of credit
facility which is utilized primarily by NCUL and Millennium to participate in
Lloyd's Syndicate 1221 managed by MTC. At December 31, 1998, letters of credit
with an aggregate face amount of $29.2 million were issued under the letter of
credit facility. No letters of credit have been drawn upon.

     The bank credit facility is collateralized by shares of common stock of the
Company's major subsidiaries. It contains covenants common to transactions of
this type, including restrictions on indebtedness and liens, limitations on
mergers and the sale of assets, maintaining certain consolidated total
stockholders' equity, statutory surplus, minimum liquidity, loss reserves and
other financial ratios.

     At December 31, 1997, the Company also had a $942,000 note payable to its
major stockholder bearing interest at 7%. This note was repaid during 1998.

NOTE 4.  FIDUCIARY FUNDS

     The Somerset Companies maintain fiduciary accounts for the insurance pools
they manage. Functions performed by the Somerset Companies include underwriting
business, collecting premiums from the insured, paying claims, collecting paid
recoverables from reinsurers, paying reinsurance premiums to reinsurers and
remitting net account balances to member insurance companies. Funds belonging to
the insurance pools are held in a fiduciary capacity.


                                      F-14
<PAGE>   42

     The fiduciary accounts as of December 31, 1998 and 1997 were as follows:

<TABLE>
<CAPTION>
                                                            DECEMBER 31,
                                                    --------------------------
                                                      1998               1997
                                                    -------            -------
                                                          (In thousands)
<S>                                                 <C>                <C>    
Cash and short-term investments ..................  $ 7,015            $ 2,114
Premiums receivable ..............................   24,690             55,970
Reinsurance balances receivable ..................    7,688              4,644
                                                    -------            -------

  Total assets ...................................  $39,393            $62,728
                                                    =======            =======

Due to insurance companies .......................  $39,393            $62,728
                                                    -------            -------

  Total liabilities ..............................  $39,393            $62,728
                                                    =======            =======
</TABLE>

     The fiduciary accounts above were not included in the accompanying
consolidated balance sheets.

NOTE 5.  INCOME TAXES

     The components of current and deferred income tax expense (benefit) were as
follows:

<TABLE>
<CAPTION>
                                                              YEAR ENDED DECEMBER 31,
                                                     -----------------------------------------
                                                       1998             1997             1996
                                                     -------          -------          -------
                                                                  (In thousands)
<S>                                                  <C>              <C>              <C>    
Current:
  Federal and foreign ........................       $ 2,887          $ 3,328          $ 3,652
  State and local ............................           213              551              628
                                                     -------          -------          -------

  Total ......................................       $ 3,100          $ 3,879          $ 4,280
                                                     =======          =======          =======

Deferred:
  Federal and foreign ........................       $   595          $   683          $   (57)
  State and local ............................           (31)              76             (101)
                                                     -------          -------          -------

  Total ......................................       $   564          $   759          $  (158)
                                                     =======          =======          =======
</TABLE>


     A reconciliation of total income taxes applicable to pre-tax operating
income and the amounts computed by applying the Federal statutory income tax
rate to the pre-tax operating income was as follows:

<TABLE>
<CAPTION>
                                                                                YEAR ENDED DECEMBER 31,
                                                        ---------------------------------------------------------------------
                                                                1998                     1997                     1996
                                                                ----                     ----                     ----
                                                                                (Dollars in thousands)
<S>                                                     <C>            <C>       <C>            <C>       <C>            <C>  
Computed expected
  tax  expense ...................................      $ 5,304        35.0%     $ 6,014        35.0%     $ 7,306        35.0%
Tax-exempt interest ..............................       (2,139)      (14.1)      (2,538)      (14.8)      (2,793)      (13.4)
Dividends received
  deduction ......................................          (48)       (0.3)         (61)       (0.3)         (59)       (0.3)
State & local income taxes, net of
  Federal income tax .............................          118         0.8          408         2.4          347         1.7
Valuation allowance ..............................          465         3.0        1,108         6.4         (775)       (3.7)
                                                                                                                         
Other ............................................          (36)       (0.2)        (293)       (1.7)          96         0.5
                                                        -------        ----      -------       -----      -------        ----

                                                        $ 3,664        24.2%     $ 4,638        27.0%     $ 4,122        19.8%
                                                        =======        ====      =======       =====      =======        ====
</TABLE>


                                      F-15
<PAGE>   43

         The tax effects of temporary differences that give rise to Federal and
foreign deferred tax assets and deferred tax liabilities were as follows:

<TABLE>
<CAPTION>
                                                            DECEMBER 31,
                                                     -------------------------
                                                       1998             1997
                                                     --------         --------
                                                          (In thousands)
<S>                                                  <C>              <C>     
Deferred tax assets:
   Loss reserve discount ..........................  $  6,628         $  7,183
   Unearned premium ...............................     1,378            1,500
   Alternative minimum tax carryforward ...........     4,674            5,106
   Deferred state and local income tax ............       407              418
   Deferred compensation ..........................        52               30
   Loss from foreign operations ...................     1,794            1,108
   Other ..........................................       314              221
                                                     --------         --------
Total gross deferred tax assets ...................    15,247           15,566
Less valuation allowance ..........................    (1,573)          (1,108)
                                                     --------         --------
Total deferred tax assets .........................    13,674           14,458
                                                     --------         --------
Deferred tax liabilities:
   Deferred acquisition costs .....................      (985)          (1,188)
   Unrealized gains on securities .................    (3,187)          (3,497)
   Contingent commission receivable ...............    (1,300)          (1,559)
   Other ..........................................      (200)            (220)
                                                     --------         --------
Total deferred tax liabilities ....................    (5,672)          (6,464)
                                                     --------         --------

Net deferred tax asset ............................  $  8,002         $  7,994
                                                     ========         ========
</TABLE>

     In 1998 and 1997, a tax benefit of $79,000 and $259,000 was credited
directly to additional paid-in capital due to the exercise of stock options,
respectively.

     In assessing the realization of deferred tax assets, management considers
whether it is more likely than not that the deferred tax assets will be
realized. The ultimate realization of deferred tax assets is dependent upon the
generation of future taxable income during the periods in which those temporary
differences become deductible. Management considers the scheduled reversal of
deferred tax liabilities, tax planning strategies and anticipated future taxable
income in making this assessment and believes it is more likely than not the
Company will realize the benefits of its deductible differences at December 31,
1998, net of any valuation allowance.

     The valuation allowance in the amount of $1,573,000 and $1,108,000 for the
years ended December 31, 1998 and 1997 respectively, is due to the uncertainty
associated with the realization of the deferred tax asset for the carryforward
of operating losses from the Company's foreign operations.

     A valuation allowance in the amount of $775,000 established in 1994 due to
the uncertainty associated with the realization of a net operating loss
carryforward deferred tax asset was taken down in 1996 when the Company utilized
the balance of the carryforward.


NOTE 6.  RESERVES FOR LOSSES AND LOSS ADJUSTMENT EXPENSES

     The following table summarizes the activity in the Insurance Companies'
reserve for losses and loss adjustment expenses ("LAE") during the three most
recent years:


                                      F-16
<PAGE>   44

<TABLE>
<CAPTION>
                                                                           Year Ended December 31,
                                                                   --------------------------------------
                                                                      1998           1997          1996
                                                                   ---------      ---------     ---------
                                                                                (In thousands)
<S>                                                                <C>            <C>           <C>      
Net reserves for losses and LAE at
      beginning of year ......................................     $ 139,841      $ 132,558     $ 138,761
                                                                   ---------      ---------     ---------

Provision for losses and LAE for
         claims occurring in the current year ................        46,050         53,654        51,429

Lloyd's portfolio transfer - reinsurance to close ............        19,655             --            -- 

Increase (decrease) in estimated losses and
         LAE for claims occurring in prior years .............        (3,383)        (1,034)       (2,452)
                                                                   ---------      ---------     ---------

Incurred losses and LAE ......................................        62,322         52,620        48,977
                                                                   ---------      ---------     ---------

Losses and LAE payments for claims
         occurring during:
         Current year ........................................        (9,848)       (12,921)      (15,439)
         Prior  years ........................................       (41,798)       (32,416)      (39,741)
                                                                   ---------      ---------     ---------

Losses and LAE payments ......................................       (51,646)       (45,337)      (55,180)
                                                                   ---------      ---------     ---------

Net reserves for losses and LAE at end of year ...............       150,517        139,841       132,558
                                                                   ---------      ---------     ---------

Reinsurance receivables on unpaid losses and LAE .............       191,927        138,591       137,043
                                                                   ---------      ---------     ---------

Gross reserves for losses and LAE at end of year .............     $ 342,444      $ 278,432     $ 269,601
                                                                   =========      =========     =========
</TABLE>

     At December 31, 1998, Syndicate 1221 and an unaffiliated syndicate on which
NCUL participated in 1997 closed their 1996 underwriting year into the 1997
underwriting year. NCUL's and Millennium's share of the reinsurance premium
transferred from the 1996 underwriting year to the 1997 underwriting year of
$19.7 million was recorded as a portfolio transfer reflecting ultimate losses
and written and earned premium in the same amount at December 31, 1998. There 
was no gain or loss on the transaction. The amount agreed upon to close an 
underwriting year into the next year is referred to as the "reinsurance to 
close."

     During 1998, 1997 and 1996, the Insurance Companies paid gross losses and
LAE of $2,091,000, $1,510,000 and $2,794,000, respectively, resulting in net
paid losses and LAE of $369,000, $723,000 and $425,000, respectively, for
environmental pollution and asbestos related claims. As of December 31, 1998 and
1997, the Insurance Companies carried gross reserves of $2,912,000 and
$2,622,000, respectively, and net reserves of $1,199,000 and $936,000,
respectively, for the potential exposure to such claims. For the year ended
December 31, 1998 and 1997, open claims with environmental pollution and
asbestos exposure amounted to 2,225 and 2,451, respectively. Management believes
that its reserves for such claims are adequate because the Insurance Companies'
participation in such risks was generally in the higher excess layers and, based
on a continuing review of such claims, management believes that a majority of
these claims will be unlikely to penetrate such high excess layers of coverage;
however, due to the significant assumptions inherent in estimating these
exposures, actual liabilities could differ from current estimates.



                                      F-17
<PAGE>   45

NOTE 7.  REINSURANCE

         The following table summarizes earned premium:

<TABLE>
<CAPTION>
                                               Year Ended December 31,
                                     ----------------------------------------
                                        1998            1997           1996
                                     ---------       ---------      ---------
                                                  (In thousands)
<S>                                  <C>             <C>            <C>      
Direct ......................        $ 102,256       $ 110,453      $  86,917
Assumed .....................           67,422          46,053         48,444
Ceded .......................          (78,475)        (71,504)       (56,630)
                                     ---------       ---------      ---------
Net .........................        $  91,203       $  85,002      $  78,731
                                     =========       =========      =========
</TABLE>

     The following table summarizes written premium:

<TABLE>
<CAPTION>
                                               Year Ended December 31,
                                     ----------------------------------------
                                        1998            1997           1996
                                     ---------       ---------      ---------
                                                  (In thousands)
<S>                                  <C>             <C>            <C>      
Direct ......................        $  92,910       $ 119,597      $  92,261

Assumed .....................           79,301          51,652         50,263

Ceded .......................          (83,729)        (80,369)       (58,356)
                                     ---------       ---------      ---------
Net .........................        $  88,482       $  90,880      $  84,168
                                     =========       =========      =========
</TABLE>

     The 1998 assumed written and earned premium includes $19,655,000 of a
Lloyd's portfolio transfer to close the 1996 underwriting year.

     Ceded losses and loss adjustment expenses incurred were $126,392,000,
$57,340,000, and $61,964,000 in 1998, 1997, and 1996, respectively.

     A contingent liability exists with respect to reinsurance ceded, since the
Company would be required to pay losses in the event the assuming reinsurers are
unable to meet their obligations under their reinsurance agreements.

     At December 31, 1998, the Company had reinsurance receivables from the
following ten reinsurers which were in excess of 5% of the Insurance Companies'
statutory surplus: Underwriters at Lloyd's, $14,648,000; SCOR Reinsurance
Company, $7,437,000; Chiyoda Fire and Marine Insurance, $11,485,000; Government
Insurance Office of New South Wales, $15,821,000, American Reinsurance Company,
$6,776,000, Folksamerica Reinsurance Company, $7,257,000, Insurance Corporation
of New York, $7,834,000, New Cap Re, $6,016,000, Progressive Casualty Insurance
Company, $5,663,000, and Taisei Fire and Marine Insurance Company Ltd.
$6,162,000.

     The Company's reinsurance security committees continually monitor the
financial strength of its reinsurers and the related reinsurance receivables. An
allowance is established to the extent that it is determined that the ultimate
amount collectible is less than the amount recorded as a receivable. At December
31, 1998 and 1997, there was an allowance for uncollectible reinsurance of
$800,000. The expense recorded for uncollectible reinsurance was $58,000,
$286,000 and $0 for 1998, 1997 and 1996, respectively.


                                      F-18
<PAGE>   46

NOTE 8. FINANCIAL INSTRUMENTS

     The following table presents the carrying amounts and estimated fair values
of the Company's financial instruments:

<TABLE>
<CAPTION>
                                                      DECEMBER 31, 1998              DECEMBER 31, 1997 
                                                   -----------------------         ----------------------- 
                                                   CARRYING          FAIR          CARRYING          FAIR
                                                    AMOUNT           VALUE          AMOUNT           VALUE
                                                   --------          -----         --------          -----
                                                                        (In thousands)
<S>                                                <C>             <C>             <C>             <C>     
Financial assets:
    Fixed maturities ........................      $240,233        $240,233        $226,834        $226,834
    Equity securities .......................         7,400           7,400           6,132           6,132
    Short-term investments ..................         5,647           5,647          22,579          22,579
Financial liabilities:
    Notes payable to banks ..................      $ 23,500        $ 23,500        $ 20,000        $ 20,000
</TABLE>

     The carrying amounts shown in the table are included in the consolidated
balance sheets under the indicated captions.

     The fair values of fixed maturity and equity securities are based on quoted
market prices at the reporting date for those or similar investments. Short-term
investments are carried at cost, which approximates fair value. The carrying
amounts of premium receivables approximate fair value because of the short
maturity of those instruments.

     The fair value of the Company's loans payable to banks approximates
carrying value since the interest rate charged is computed using market rates.

NOTE 9.  STOCK OPTION PLANS

     The Company has an Incentive Stock Option Plan and a Non Qualified Stock
Option Plan which allow for the grant to key employees of the Company, its
subsidiaries and affiliates, options to purchase an aggregate of 900,000 shares
of its common stock.

     All options are exercisable upon vesting for one share of the Company's
common stock and are granted at exercise prices no less than 90% of the fair
market value of the common stock on the date of the grant. No amounts are
charged to expense upon the granting of options under the plans. Options vest
equally over a four year period and have a maximum term of ten years.

     Stock options outstanding at December 31, 1998, 1997 and 1996 were as
follows:

<TABLE>
<CAPTION>
                                                          1998                       1997                          1996
                                                 ----------------------      -----------------------      -----------------------
                                                                AVERAGE                     AVERAGE                       AVERAGE
                                                 NO. OF         EXERCISE     NO. OF         EXERCISE       NO. OF         EXERCISE
                                                 SHARES          PRICE       SHARES           PRICE        SHARES          PRICE
                                                 ------          -----       ------           -----        ------          -----
<S>                                             <C>             <C>          <C>             <C>          <C>             <C>    
Options outstanding at
  Beginning of year ...................         477,925         $ 19.37      624,001         $ 18.73      783,800         $ 18.68
Granted ...............................          79,500         $ 17.00       25,000         $ 17.00           --           --
Exercised .............................         (75,925)        $ 14.09     (126,325)        $ 12.67      (65,499)        $ 13.54
Canceled ..............................         (38,750)        $ 20.07      (44,751)        $ 28.12      (94,300)        $ 22.15
                                                -------                      -------                      -------
Options outstanding at
  End of year .........................         442,750         $ 19.79      477,925         $ 19.37      624,001         $ 18.73
                                                =======                      =======                      =======
Number of options
  Exercisable .........................         370,750         $ 20.33      365,650         $ 20.75      402,126         $ 20.12
</TABLE>


                                      F-19
<PAGE>   47

     The Company has a Stock Appreciation Rights Plan which allows for the grant
of up to 300,000 stock appreciation rights at prices of no less than 90% of the
fair market value of the common stock. The Company granted 13,500, 25,500 and
166,000 stock appreciation rights in 1998, 1997 and 1996, respectively. The
amounts charged to expense (recovered) in 1998, 1997 and 1996 were ($171,000),
$147,000 and $46,000, respectively.

     The Company accounts for stock options in accordance with the provisions of
Accounting Principles Board (APB) Opinion No. 25, Accounting for Stock Issued to
Employees, which requires compensation expense to be recognized only if the fair
value of the underlying stock at the grant date exceeds the exercise price of
the option. Accordingly, no compensation cost has been recognized for stock
options. Had compensation cost for the Company's stock options been determined
consistent with SFAS No. 123, Accounting for Stock Based Compensation, the
Company's net income and income per share would have been reduced to the pro
forma amounts indicated in the following table:

<TABLE>
<CAPTION>
                                                        1998         1997         1996
                                                        ----         ----         ----
<S>                                   <C>             <C>          <C>          <C>    
Net income (in thousands)             As Reported     $11,489      $12,546      $16,752
                                        Pro Forma     $11,243      $12,295      $16,529

Basic income per share                As Reported       $1.37        $1.51        $2.04
                                        Pro Forma       $1.34        $1.48        $2.02

Diluted income per share              As Reported       $1.36        $1.50        $2.02
                                        Pro Forma       $1.33        $1.47        $1.99
</TABLE>

     The fair value of each option grant is estimated on the date of grant using
the Black-Scholes option-pricing model with the following assumptions used for
the options granted: no dividend yield; expected volatility of 32.26% and 31.8%
in 1998 and 1997, respectively; risk free interest rate of 5% and 6% for 1998
and 1997, respectively; and expected life of 6 years for 1998 and 1997. The
weighted average fair value of options granted was $7.03 and $6.30 in 1998 and
1997, respectively. There were no options issued in 1996.

The following table summarizes information about options outstanding at December
31, 1998:

<TABLE>
<CAPTION>
                  OUTSTANDING      AVERAGE REMAINING     AVERAGE          EXERCISABLE     AVERAGE EXERCISE
PRICE RANGE         SHARES          CONTRACT LIFE     EXERCISE PRICE         SHARES             PRICE
- - -----------         ------          -------------     --------------         ------             -----
<S>                <C>                   <C>             <C>                <C>                 <C>    
$14 to $15         181,125               6.1             $ 14.41            181,125             $ 14.41
$16 to $19         144,125               5.8             $ 17.40             72,125             $ 17.79
$28 to $34         117,500               4.1             $ 31.01            117,500             $ 31.01
</TABLE>

NOTE 10.  EMPLOYEE BENEFITS

     The Company sponsors a defined contribution plan covering substantially all
its U.S. employees. Contributions are equal to 15% of each eligible employee's
gross pay (plus bonus of up to $2,500) up to the amount permitted by certain
Federal regulations. Employees vest at 20% per year beginning at the end of the
second year and are therefore fully vested after six years of service. Plan
expense, included within operating expenses, amounted to $607,000, $686,000 and
$839,000 in 1998, 1997 and 1996, respectively. The Company sponsors a similar
plan under UK regulations for its UK employees for which the Company had
expenses of $142,000 and $121,000 for 1998 and 1997, respectively.


                                      F-20
<PAGE>   48

     The Company has a 401(k) Plan for all eligible employees. Each eligible
employee can contribute up to 8% of their salary limited by certain Federal
regulations. The Company does not match any of the employee contributions.

NOTE 11.  DIVIDENDS FROM SUBSIDIARIES AND STATUTORY FINANCIAL INFORMATION

     Navigators Insurance may pay dividends to the Company out of its statutory
earned surplus pursuant to statutory restrictions imposed under the New York
Insurance Law. The maximum amount available for the payment of dividends by
Navigators Insurance during 1999 without prior regulatory approval is
$10,966,000. Navigators Insurance paid $5,000,000 in dividends to the Company in
1998, and $0 in 1997 and 1996.

     Navigators Insurance UK Branch was capitalized at $10 million in October
1997 and is required to maintain certain capital requirements under UK
regulations.

     The Insurance Companies' statutory net income as filed with the regulatory
authorities for 1998, 1997 and 1996 was $17,987,000, $15,714,000 and
$13,308,000, respectively. The statutory surplus as filed with the regulatory
authorities was $109,658,000 and $109,957,000 at December 31, 1998 and 1997,
respectively.

     The Insurance Companies, domiciled in New York State, prepare and file
their statutory financial statements in accordance with accounting practices
prescribed or permitted by the New York State Insurance Department. Prescribed
statutory accounting practices ("SAP") include a variety of publications of the
National Association of Insurance Commissioners ("NAIC"), as well as state laws,
regulations, and general administrative rules. Permitted statutory accounting
practices encompass all accounting practices not so prescribed. The Insurance
Companies do not apply any permitted accounting practices.

     The significant differences between SAP and generally accepted accounting
principles ("GAAP") are that under SAP: (1) acquisition and commission costs are
expensed when incurred while under GAAP these costs are deferred and amortized
as the related premium is earned; (2) bonds are stated at amortized cost, while
under GAAP bonds are held in an available-for-sale account and reported at fair
value, with unrealized gains and losses recognized in other comprehensive income
as a separate component of stockholder's equity; (3) federal income taxes are
recorded when payable while under GAAP deferred taxes are provided to reflect
temporary differences between the carrying values and tax bases of assets and
liabilities; (4) unearned premiums and loss reserves are reflected net of ceded
amounts while under GAAP the unearned premiums and loss reserves are reflected
gross of ceded amounts; (5) agents' balances over ninety days due are excluded
from the balance sheet, and uncollateralized amounts due from unauthorized
reinsurers are deducted from surplus, while under GAAP they are restored to the
balance sheet, subject to the usual tests regarding recoverability.

     The NAIC recently completed a process intended to codify statutory
accounting practices for insurance enterprises. As a result of this process, the
NAIC will issue a revised statutory Accounting Practices and Procedures Manual
that will be effective January 1, 2001 for the calendar year 2001. The Company
will prepare its statutory basis financial statements in accordance with the
revised statutory manual subject to any deviations prescribed or permitted by
the New York insurance commissioner. The Company has not yet determined the
impact that this change will have on its statutory capital and surplus.

     As part of its general regulatory oversight process, the New York State
Insurance Department (the "Department") conducts detailed examinations of the
books, records and accounts of New York insurance companies every three to five
years. The Insurance Companies were examined by the Department for the years
1991 through 1995. There were no adjustments to the Insurance Companies'
previously filed statutory financial statements. 


                                      F-21
<PAGE>   49

NOTE 12. COMMITMENTS AND CONTINGENCIES

a.   Future minimum annual rental commitments at December 31, 1998 under various
     noncancellable operating leases for the Company's office facilities, which
     expire at various dates through September 29, 2006, are as follows:

<TABLE>
<CAPTION>
                                                                  (In thousands)
YEAR ENDED DECEMBER 31,
- - -----------------------
<S>                                                                  <C>  
     1999 ....................................................        1,763
     2000 ....................................................        1,272
     2001 ....................................................          916
     2002 ....................................................          805
     2003 and after ..........................................          987
                                                                     ------
     
     Total ...................................................       $5,743
                                                                     ======
</TABLE>

     The Company is also liable for additional payments to the landlords for
     certain annual cost increases. Rent expense for the years ended December
     31, 1998, 1997 and 1996 was $1,298,000, $1,522,000 and $1,577,000,
     respectively.

b.   The Company is not a party to or the subject of, any material pending legal
     proceedings which depart from the ordinary routine litigation incident to
     the kinds of business conducted by the Company, except for an assessment on
     Navigators Insurance by the Institute of London Underwriters ("ILU"). In
     late 1998, the ILU advised its then current forty-one (41) members,
     including Navigators Insurance, that they were each being assessed
     approximately (pound)900,000 to pay for anticipated operating deficits
     arising from the long term lease of the ILU building located in London (the
     "ILU Building"). This assessment was to be paid in cash or by providing a
     letter of credit.

     Since the anticipated operating deficits responsible for the ILU's
     assessment were apparently recognized by the ILU prior to Navigators
     Insurance joining the ILU in November 1997, Navigators Insurance has taken
     the position in its discussions with the ILU that the anticipated operating
     deficits should have been disclosed to Navigators Insurance during the
     pendency of the application for membership or afterwards. This would have
     allowed Navigators Insurance to make an informed decision as to whether it
     should have joined the ILU in the first instance or continued its
     membership. Any other conclusion would absolve the ILU, its longstanding
     members (both past and present), auditors and other advisors from their
     duties to Navigators Insurance in connection with its application for, and
     subsequent membership in the ILU.

     Even assuming that Navigators Insurance could be held responsible for the
     assessment, Navigators Insurance has also informed the ILU that it opposes
     the assessment as inequitable and inappropriate since it purports to force
     the ILU's members (without regard to the length of membership,
     proportionate usage of the ILU's London Processing Centre or current or
     past occupancy of the ILU Building) to pay now for potential worst case
     liabilities extending through 2011.

     The ILU has, thus far, not filed suit to enforce the assessment against
     Navigators Insurance. In the event the ILU does file such a suit,
     Navigators Insurance intends to vigorously contest liability for payment of
     the assessment. It is not possible to forecast the ultimate liability, if
     any, at the present time.

NOTE 13.  SEGMENT INFORMATION

     The Company's subsidiaries are primarily engaged in the writing and
management of property and casualty insurance. The Company's segments include
the Insurance Companies, the Somerset Companies and the Lloyd's operations, each
of which is managed separately. The Insurance Companies consist of Navigators
Insurance and NIC and are currently primarily engaged in underwriting marine


                                      F-22
<PAGE>   50
insurance and related lines of business. The Somerset Companies are
underwriting management companies. The Somerset Companies produce, manage and
underwrite insurance and reinsurance for both affiliated and non-affiliated
companies. The Lloyd's operations underwrite marine and related lines of
business at Lloyd's of London as a corporate member with limited liability. All
segments are evaluated based on their GAAP underwriting or operating results
which are prepared using the accounting policies in the summary of significant
accounting policies in note 1.

The Insurance Companies and the Lloyd's operations are measured taking into
account net premiums earned, incurred losses and loss expenses, commisssion
expense and other underwriting expenses. The Somerset Companies' results
include commission income less other operating expenses. Each segment also 
maintains their own investments, on which they earn income and realize capital 
gains or losses. Other operations include intersegment income and expense in 
the form of affiliated commissions, as well as income and expense from 
corporate operations. 


Financial data by segment for 1996 through 1998 is as follows:

<TABLE>
<CAPTION>
Year ended December 31:                                                                      1998            1997            1996
- - ----------------------                                                                    ---------       ---------       ---------
                                                                                                       (In thousands)
<S>                                                                                       <C>             <C>             <C>      
Revenue, excluding net investment income and realized Gains on investments:
Insurance Companies ................................................................      $  50,983       $  73,415       $  78,731
Somerset Companies .................................................................         12,935          14,634          22,359
Lloyd's operations .................................................................         42,455          11,619              --
Other operations (includes corporate activity and consolidating
   Adjustments) ....................................................................         (7,893)         (8,713)        (11,031)
                                                                                          ---------       ---------       ---------
   Total ...........................................................................         98,480          90,955          90,059
                                                                                          =========       =========       =========

Net investment income:
Insurance Companies ................................................................         14,658          13,696          12,514
Somerset Companies .................................................................              8             636           1,086
Lloyd's operations .................................................................            535              80              --
Other operations ...................................................................              8              23              14
                                                                                          ---------       ---------       ---------
   Total ...........................................................................         15,209          14,435          13,614
                                                                                          =========       =========       =========

Realized gains and losses on investments:
Insurance Companies ................................................................          1,851           3,147             464
Somerset Companies .................................................................             --              --              39
Lloyd's operations .................................................................             --              --              --
Other operations ...................................................................           (420)           (320)             --
                                                                                          ---------       ---------       ---------
   Total ...........................................................................          1,431           2,827             503
                                                                                          =========       =========       =========

Income before tax expense (benefit):
Insurance Companies ................................................................         20,458          20,588          17,431
Somerset Companies .................................................................         (2,619)         (1,962)          6,125
Lloyd's operations .................................................................            279             112              --
Other operations ...................................................................         (2,965)         (1,554)         (2,682)
                                                                                          ---------       ---------       ---------
   Total ...........................................................................         15,153          17,184          20,874
                                                                                          =========       =========       =========

Income tax expense (benefit):
Insurance Companies ................................................................          4,922           4,663           3,220
Somerset Companies .................................................................            (76)            881           2,496
Lloyd's operations .................................................................             --              37              --
Other operations ...................................................................         (1,182)           (943)         (1,594)
                                                                                          ---------       ---------       ---------
   Total ...........................................................................          3,664           4,638           4,122
                                                                                          =========       =========       =========

Net income (loss):
Insurance Companies ................................................................         15,536          15,925          14,211
Somerset Companies .................................................................         (2,543)         (2,843)          3,629
Lloyd's operations .................................................................            279              75              --
</TABLE>


                                      F-23
<PAGE>   51

<TABLE>
<S>                                                                                       <C>             <C>             <C>      
Other operations ...................................................................         (1,783)           (611)         (1,088)
                                                                                          ---------       ---------       ---------
   Total ...........................................................................         11,489          12,546          16,752
                                                                                          =========       =========       =========

Identifiable Assets:
Insurance Companies ................................................................        532,320         471,439              
Somerset Companies .................................................................         15,406          18,167            
Lloyd's operations .................................................................         50,069          17,043            
Other operations ...................................................................         (5,708)         (5,442)           
                                                                                          ---------       ---------      
   Total ...........................................................................      $ 592,087       $ 501,207            
                                                                                          =========       =========       
</TABLE>

NOTE 14.  EARNINGS PER COMMON SHARE

     Following is a reconciliation of the numerators and denominators of the
basic and diluted earnings per share ("EPS") computations for the years ended
December 31, 1998, 1997 and 1996:

<TABLE>
<CAPTION>
                                                                                                     1998
                                                                         -------------------------------------------------------
                                                                                                    Average
                                                                                                     Shares             Income
                                                                             Income               Outstanding          Per Share
                                                                             ------               -----------          ---------
<S>                                                                       <C>                      <C>                  <C>     
Basic EPS:
    Income available to common stockholders ....................          $11,489,000              8,414,237            $   1.37
Effect of Dilutive Securities:
   Stock options ...............................................                                      44,789
Diluted EPS:
   Income available to common stockholders .....................          $11,489,000              8,459,026            $   1.36
</TABLE>

<TABLE>
<CAPTION>
                                                                                                     1997
                                                                         -------------------------------------------------------
                                                                                                    Average
                                                                                                     Shares             Income
                                                                             Income               Outstanding          Per Share
                                                                             ------               -----------          ---------
<S>                                                                       <C>                      <C>                  <C>     
Basic EPS:
    Income available to common stockholders ....................          $12,546,000              8,296,429            $   1.51
Effect of Dilutive Securities:
   Stock options ...............................................                                      88,091
Diluted EPS:
   Income available to common stockholders .....................          $12,546,000              8,384,520            $   1.50
</TABLE>

<TABLE>
<CAPTION>
                                                                                                     1996
                                                                         -------------------------------------------------------
                                                                                                    Average
                                                                                                     Shares             Income
                                                                             Income               Outstanding          Per Share
                                                                             ------               -----------          ---------
<S>                                                                       <C>                      <C>                  <C>     
Basic EPS:
    Income available to common stockholders ....................          $16,752,000              8,196,994            $   2.04
Effect of Dilutive Securities:
   Stock options ...............................................                                      88,964
Diluted EPS:
   Income available to common stockholders .....................          $16,752,000              8,285,958            $   2.02
</TABLE>


                                      F-24
<PAGE>   52

     Certain outstanding options to purchase common shares were not included in
the respective computations of diluted earnings per common share because the
options' exercise prices were greater than the average market price of the
common shares. For each of the years presented, these outstanding options
consisted of the following: during 1998, 156,125 shares at an average price of
$27.96 expiring in years 2000 to 2003; during 1997, 173,125 shares at an average
price of $27.65 expiring in years 2000 to 2003; and during 1996, 164,250 shares
at an average price of $30.98 expiring in years 2001 to 2003.

NOTE 15.  QUARTERLY FINANCIAL DATA (UNAUDITED)

     The results of operations for the quarterly periods during 1998 and 1997
were as follows.

<TABLE>
<CAPTION>
                                                                                      THREE MONTH PERIOD ENDED
                                                                -----------------------------------------------------------------
                                                                MARCH 31,         JUNE 30,           SEPT. 30,          DEC. 31,
                                                                  1998              1998               1998               1998
                                                                  ----              ----               ----               ----
                                                                           (In thousands, except net income per share)
<S>                                                             <C>                <C>                <C>                <C>    
Total revenues .........................................        $24,027            $22,299            $24,360            $44,434
Income before income tax ...............................        $ 4,517            $ 4,192            $ 4,022            $ 2,422
Net income .............................................        $ 3,390            $ 3,119            $ 2,882            $ 2,098

Per share data:
Net income per share - Basic ...........................        $  0.40            $  0.37            $  0.34            $  0.25
Net income per share - Diluted .........................        $  0.40            $  0.37            $  0.34            $  0.25
</TABLE>

<TABLE>
<CAPTION>
                                                                                      THREE MONTH PERIOD ENDED
                                                                -----------------------------------------------------------------
                                                                MARCH 31,          JUNE 30,          SEPT. 30,          DEC. 31,
                                                                  1997               1997              1997               1997
                                                                  ----               ----              ----               ----
                                                                           (In thousands, except net income per share)
<S>                                                             <C>                <C>                <C>                <C>    
Total revenues .........................................        $23,937            $28,122            $28,085            $28,074
Income before income tax ...............................        $ 4,313            $ 4,336            $ 4,782            $ 3,753
Net income .............................................        $ 3,235            $ 3,156            $ 3,463            $ 2,692

Per share data:
Net income per share - Basic ...........................        $  0.39            $  0.38            $  0.42            $  0.32
Net income per share - Diluted .........................        $  0.39            $  0.38            $  0.41            $  0.32
</TABLE>

     The increase in fourth quarter 1998 revenues as compared to the previous
three quarters was primarily due to the $19.7 million Lloyd's reinsurance to
close portfolio transfer.


                                      F-25
<PAGE>   53

                                                                      SCHEDULE I

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES
           SUMMARY OF CONSOLIDATED INVESTMENTS--OTHER THAN INVESTMENTS
                               IN RELATED PARTIES
                                December 31, 1998
                                 (In thousands)

<TABLE>
<CAPTION>
                                                                                                                    Amount at which
                                                                                                                     shown in the
                                                                            Amortized                                consolidated
Type of Investment                                                         Cost or Cost          Fair value          balance sheet
- - ------------------                                                           --------             --------             --------
<S>                                                                          <C>                  <C>                  <C>     
Fixed maturities:
  Bonds:
    United States Government,
      government agencies
      and authorities ..........................................             $ 15,281             $ 15,462             $ 15,462
    States, municipalities
      and political subdivisions ...............................              120,276              126,390              126,390
    Mortgage and asset backed ..................................               79,901               81,333               81,333
    Corporate bonds ............................................               15,540               15,956               15,956
    Redeemable preferred stock .................................                1,023                1,092                1,092
                                                                             --------             --------             --------
                  Total fixed maturities .......................              232,021              240,233              240,233
                                                                             ========             ========             ========

Equity securities:
  Common stocks:
    Industrial, miscellaneous
      and all other ............................................                6,506                7,400                7,400
Short-term investments .........................................                5,647                5,647                5,647
Other investments ..............................................                1,145                1,145                1,145
                                                                             --------             --------             --------
                  Total investments ............................             $245,319             $254,425             $254,425
                                                                             ========             ========             ========
</TABLE>


                                      S-1
<PAGE>   54

                                                                     SCHEDULE II

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

                  CONDENSED FINANCIAL INFORMATION OF REGISTRANT
                           THE NAVIGATORS GROUP, INC.

                                 BALANCE SHEETS
                                (Parent Company)
                        (In thousands, except share data)

<TABLE>
<CAPTION>
                                                                                                             DECEMBER 31,
                                                                                                   --------------------------------
A S S E T S                                                                                           1998                   1997
                                                                                                   ---------              ---------
<S>                                                                                                <C>                    <C>      
Cash .................................................................................             $      95              $      --
Investment in wholly owned subsidiaries,
   at equity .........................................................................               154,454                141,826
Short-term investments ...............................................................                    17                     --
Other assets .........................................................................                12,599                 10,163
                                                                                                   ---------              ---------

              Total assets ...........................................................             $ 167,165              $ 151,989
                                                                                                   =========              =========

L I A B I L I T I E S

Notes payable to banks ...............................................................             $  23,500              $  20,000
Accounts payable and other liabilities ...............................................                   399                    747
                                                                                                   ---------              ---------
                  Total liabilities ..................................................                23,899                 20,747
                                                                                                   ---------              ---------

Commitments and contingencies ........................................................                    --                     --

S T O C K H O L D E R S '  E Q U I T Y

Preferred stock, $.10 par value, authorized
   1,000,000 shares, none issued .....................................................                    --                     --
Common stock, $.10 par value, authorized
   10,000,000 shares, issued and outstanding
   8,447,926 in 1998 and 8,368,167 in 1997 ...........................................                   845                    837
Additional paid-in capital ...........................................................                39,332                 38,119
Retained earnings ....................................................................                97,342                 85,853
Accumulated other comprehensive income:
   Net unrealized gains on securities
   available-for-sale, net of tax ....................................................                 5,919                  6,494
   Foreign currency translation adjustment, net of tax ...............................                  (172)                   (61)
                                                                                                   ---------              ---------

                  Total stockholders' equity .........................................               143,266                131,242
                                                                                                   ---------              ---------

                  Total liabilities and stockholders' equity .........................             $ 167,165              $ 151,989
                                                                                                   =========              =========
</TABLE>


                                      S-2
<PAGE>   55

                                                                     SCHEDULE II

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

            CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Continued)
                           THE NAVIGATORS GROUP, INC.

                              STATEMENTS OF INCOME
                                (Parent Company)
                                 (In thousands)

<TABLE>
<CAPTION>
                                                                                             YEAR ENDED DECEMBER 31,
                                                                               ----------------------------------------------------
                                                                                 1998                  1997                  1996
                                                                               --------              --------              --------
<S>                                                                            <C>                   <C>                   <C>     
Revenues:
  Net investment income ..........................................             $      7              $     22              $     14
  Net realized capital loss ......................................                 (420)                 (320)                   --
  Dividends received from wholly owned
    subsidiaries .................................................                5,000                    --                 4,819
Other Income .....................................................                  591                   727                   513
Operating expenses and income taxes ..............................               (1,944)               (1,768)               (2,935)
                                                                               --------              --------              --------
Income (loss) before equity in
  undistributed net income
  of wholly owned subsidiaries ...................................                3,234                (1,339)                2,411
Equity in undistributed net income
  of wholly owned subsidiaries ...................................                8,255                13,885                12,953
Equity in undistributed net
  income of affiliated company ...................................                   --                    --                 1,388
                                                                               --------              --------              --------

Net income .......................................................             $ 11,489              $ 12,546              $ 16,752
                                                                               ========              ========              ========
</TABLE>



                                      S-3
<PAGE>   56

                                                                     SCHEDULE II

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

            CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Continued)
                           THE NAVIGATORS GROUP, INC.

                            STATEMENTS OF CASH FLOWS
                                (Parent Company)
                                 (In thousands)

<TABLE>
<CAPTION>
                                                                                                 YEAR ENDED DECEMBER 31,
                                                                                     ----------------------------------------------
                                                                                       1998               1997               1996
                                                                                     --------           --------           --------
<S>                                                                                  <C>                <C>                <C>     
Operating activities:
  Net income ..............................................................          $ 11,489           $ 12,546           $ 16,752

  Adjustments to reconcile net income
    to net cash provided by (used in) operations:  
    Net realized capital loss .............................................               420                320                 --
    Equity in undistributed net income of wholly
      owned subsidiaries ..................................................            (8,255)           (13,885)           (12,953)
    Other .................................................................            (4,475)            (4,948)            (3,408)
                                                                                     --------           --------           --------
  Net cash provided by (used in) operating activities .....................              (821)            (5,967)               391
                                                                                     --------           --------           --------

Investing activities:
  Investment in affiliate .................................................            (5,144)                --                820
  Sale of other investments ...............................................             1,356                 --                 --
  Net (increase) decrease in short-term investments .......................               (17)               933               (933)
                                                                                     --------           --------           --------
  Net cash provided by (used in) investing activities .....................            (3,805)               933               (113)
                                                                                     --------           --------           --------

Financing activities:
  Proceeds from bank loan .................................................             3,500              3,000                 --
  Repayment of bank loan ..................................................                --                 --             (2,500)
  Proceeds from exercise of stock options .................................             1,221              1,931                887
                                                                                     --------           --------           --------
  Net cash provided by (used in) financing activities .....................             4,721              4,931             (1,613)
                                                                                     --------           --------           --------

Increase (decrease) in cash ...............................................                95               (103)            (1,335)
Cash Beginning of Period ..................................................                 0                103              1,438
                                                                                     --------           --------           --------
Cash End of Period ........................................................          $     95           $      0           $    103
                                                                                     ========           ========           ========
</TABLE>


                                      S-4
<PAGE>   57

                                                                    SCHEDULE III

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES
                       SUPPLEMENTARY INSURANCE INFORMATION
                                 (In thousands)

<TABLE>
<CAPTION>
                                              Reserve                                                     
                                  Deferred   for losses                Other policy                       
                                   policy     and loss                  claims and     Net          Net   
                                acquisition  adjustment    Unearned      benefits     earned     investment
        Period                     costs      expenses     premiums      payable      premium     income(1)
                                 --------     --------     --------     --------     --------     --------
<S>                              <C>          <C>          <C>          <C>          <C>          <C>        
Year ended December 31, 1998
   Insurance Companies .....     $  2,813     $307,788     $ 44,681     $     --     $ 51,033     $ 14,658   
   Lloyd's Operations ......        1,490       34,656        6,614           --       40,170          347   
                                 --------     --------     --------     --------     --------     --------
                                 $  4,303     $342,444     $ 51,295     $     --     $ 91,203     $ 15,005   
                                 ========     ========     ========     ========     ========     ========   
Year ended December 31, 1997                                                                    
   Insurance Companies .....     $  3,393     $270,521     $ 39,639     $     --     $ 73,415     $ 13,696   
   Lloyd's Operations ......        2,010        7,911        9,020           --       11,587           80   
                                 --------     --------     --------     --------     --------     --------
                                 $  5,403     $278,432     $ 48,659     $     --     $ 85,002     $ 13,776   
                                 ========     ========     ========     ========     ========     ========   
Year ended December 31, 1996                                                                    
   Insurance Companies .....     $  3,658     $269,601     $ 33,917     $     --     $ 78,731     $ 12,514   
   Lloyd's Operations ......           --           --           --           --           --           --   
                                 --------     --------     --------     --------     --------     --------
                                 $  3,658     $269,601     $ 33,917     $     --     $ 78,731     $ 12,514   
                                 ========     ========     ========     ========     ========     ========   


<CAPTION>
                                  Losses    Amortization
                                 and loss   of deferred
                                adjustment     policy       Other          Net
                                 expenses    acquisition  operating     written
       Period                    incurred     costs(2)    expenses(1)   premium
                                 --------     --------     --------     --------
<S>                              <C>          <C>          <C>          <C>     
Year ended December 31, 1998
   Insurance Companies .....     $ 30,123     $ 14,613     $  2,299     $ 49,287
   Lloyd's Operations ......       32,199        5,032        2,720       39,195
                                 --------     --------     --------     --------
                                 $ 62,322     $ 19,645     $  5,019     $ 88,482
                                 ========     ========     ========     ========
Year ended December 31, 1997                                          
   Insurance Companies .....     $ 45,194     $ 21,676     $  2,801     $ 72,468
   Lloyd's Operations ......        7,426        2,889        1,272       18,412
                                 --------     --------     --------     --------
                                 $ 52,620     $ 24,565     $  4,073     $ 90,880
                                 ========     ========     ========     ========
Year ended December 31, 1996                                          
   Insurance Companies .....     $ 48,977     $ 22,793     $  2,507     $ 84,168
   Lloyd's Operations ......           --           --           --           --
                                 --------     --------     --------     --------
                                 $ 48,977     $ 22,793     $  2,507     $ 84,168
                                 ========     ========     ========     ========
</TABLE>

(1)  Net investment income and other operating expenses reflect only such
     amounts attributable to the Company's insurance operations.

(2)  Amortization of deferred policy acquisition costs reflects only such
     amounts attributable to the Company's insurance operations. A portion of
     these costs is eliminated upon consolidation.


                                      S-5
<PAGE>   58

                                                                     SCHEDULE IV

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES
                                   REINSURANCE

                                 Written Premium
                             (Dollars in thousands)

<TABLE>
<CAPTION>
                                                                   Ceded to         Assumed                          Percentage
                                                   Direct            other         from other          Net           of amount
                                                   Amount          companies       companies          amount       assumed to net
                                                  --------         --------         --------         --------      --------------
<S>                                               <C>              <C>              <C>              <C>                    <C>
Year ended December 31, 1998
   Property-Casualty ......................       $ 92,910         $ 83,729         $ 79,301         $ 88,482               90%
                                                  --------         --------         --------         --------         --------
Year ended December 31, 1997
   Property-Casualty ......................       $119,597         $ 80,369         $ 51,652         $ 90,880               57%
                                                  --------         --------         --------         --------         --------
Year ended December 31, 1996
   Property-Casualty ......................       $ 92,261         $ 58,356         $ 50,263         $ 84,168               60%
                                                  --------         --------         --------         --------         --------
</TABLE>



                                      S-6
<PAGE>   59

                                                                      SCHEDULE V


                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES
                        VALUATION AND QUALIFYING ACCOUNTS
                                 (In thousands)

<TABLE>
<CAPTION>
   Col. A                       Col. B                     Col. C                        Col. D             Col. E
   ------                       ------                    Additions                      ------             ------
                                             ----------------------------------
                               Balance at                                                                 Balance at
                               January 1,        Charged to        Charged to          Deductions        December 31,
Description                      1998        Costs and Expenses  Other Accounts         Describe             1998
- - -----------                      ----        ------------------  --------------         --------             ----
<S>                             <C>                <C>                <C>                <C>                <C>   
Allowance for 
uncollectible 
reinsurance                     $  800             $    0             $    0             $    0             $  800
                                ------             ------             ------             ------             ------

Valuation
allowance in
deferred taxes                  $1,108             $  465             $    0             $    0             $1,573
                                ------             ------             ------             ------             ------
</TABLE>



                                      S-7
<PAGE>   60

                                                                     SCHEDULE VI

                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES

   SUPPLEMENTARY INFORMATION CONCERNING PROPERTY/CASUALTY INSURANCE OPERATIONS
                                 (In thousands)

<TABLE>
<CAPTION>
                                           Reserve                                              
                               Deferred  for losses                                             
   Affiliations                 policy    and loss   Discount,              Net         Net     
      with                   acquisition adjustment   if any,   Unearned   earned    investment 
   Registrant                   costs     expenses   deducted   premium    premium    income(1) 
   ----------                  --------   --------   --------   --------   --------   --------  
<S>                            <C>        <C>        <C>        <C>        <C>        <C>       
Consolidated subsidiaries

Year ended December 31, 1998   $  4,303   $342,444   $     --   $ 51,295   $ 91,203   $ 15,005  
                               --------   --------   --------   --------   --------   --------  

Year ended December 31, 1997   $  5,403   $278,432   $     --   $ 48,659   $ 85,002   $ 13,776  
                               --------   --------   --------   --------   --------   --------  

Year ended December 31, 1996   $  3,658   $269,601   $     --   $ 33,917   $ 78,731   $ 12,514  
                               --------   --------   --------   --------   --------   --------  


<CAPTION>
                                Losses and loss adjustment             Amortization
                               expenses incurred related to             of deferred                 
                               ----------------------------               policy     Other        Net
                                Current              Prior             acquisition  operating   written
                                 year                years               costs(2)  expenses(1)  premium
                               --------            --------              --------   --------   --------
<S>                            <C>                 <C>                   <C>        <C>        <C>     
Consolidated subsidiaries

Year ended December 31, 1998   $ 65,705            $ (3,383)             $ 19,645   $  5,019   $ 88,482
                               --------            --------              --------   --------   --------

Year ended December 31, 1997   $ 53,654            $ (1,034)             $ 24,565   $  4,073   $ 90,880
                               --------            --------              --------   --------   --------

Year ended December 31, 1996   $ 51,429            $ (2,452)             $ 22,793   $  2,507   $ 84,168
                               --------            --------              --------   --------   --------
</TABLE>


(1)  Net investment income and other operating expenses reflect only such
     amounts attributable to the Company's insurance operations.

(2)  Amortization of deferred policy acquisition costs reflects only such
     amounts attributable to the Company's insurance operations. A portion of
     these costs is eliminated upon consolidation.



                                      S-8
<PAGE>   61

                                INDEX TO EXHIBITS


EXHIBIT NO.         DESCRIPTION OF EXHIBIT
- - -----------         ----------------------

3-1     Restated Certificate of Incorporation                         (a)

3-2     By-laws, as amended                                           (a)

10-1    Management Agreement between Navigators Insurance
        Company and Somerset Marine, Inc.                             (a)

10-2    Agreement between The Navigators Group, Inc. and
        Somerset Marine, Inc.                                         (a)

10-3    Stock Option Plan                                             (a)(b)

10-4    Non-Qualified Stock Option Plan                               (b)

10-5    Employment Agreement with Terence N. Deeks                    (c)

10-6    Employment Agreement with W. Allen Barnett                    (c)

10-7    Letter Agreement with Michael J. Abdallah                     (d)

10-8    Consulting Agreement between The Navigators Group, Inc.
        and Robert F. Wright Associates, Inc.                         (c)

10-9    Amended and Restated Credit Agreement dated November
        26, 1996, among The Navigators Group, Inc. and Lenders        (d)
        
10-10   Agreement with Bradley D. Wiley dated June 3, 1997            (f)

10-11   First Amendment dated April 9, 1997 to the Amended and
        Restated Credit Agreement dated November 26, 1996             (f)

10-12   Second Amendment dated December 11, 1997 to the Amended
        and Restated Credit Agreement dated November 26, 1996         (f)

10-13   Consulting Agreement between The Navigators Group, Inc.
        and William D. Warren                                         (f)

10-14   Amended and Restated Credit Agreement dated December
        21, 1998, among The Navigators Group, Inc. and Lenders        

10-15   Employment Agreement with Salvatore A. Margarella dated
        March 1, 1999

11-1    Statement re Computation of Per Share Earnings

21-1    Subsidiaries of Registrant

23-1    Consent of Independent Auditor

27-1    Financial Data Schedule

28-1    Information from reports furnished to state insurance
        regulatory authorities                                        (e)

- - ---------------

(a)          Previously filed under Commission file No. 33-5667 as part of Form
             S-1, incorporated herein by reference thereto.
(b)          Management contracts of compensatory plans or arrangements required
             to be filed as exhibits to this Form 10-K by Item 601(10)(iii) of
             Regulation S-K, previously filed as indicated and incorporated
             herein by reference.
(c)(d)(f)    Previously filed with the Company's Form 10-K for the year ended
             December 31, 1994 (c), 1996 (d) and 1997 (f) incorporated herein by
             reference thereto.
(e)          Submitted in paper format under cover of Form SE.




<PAGE>   1
                                                                   EXHIBIT 10-14

                                                                       EXECUTION
                                                                            COPY





                                   $85,000,000


                      AMENDED AND RESTATED CREDIT AGREEMENT

                                      AMONG

                           THE NAVIGATORS GROUP, INC.,

                                  as Borrower,

                            THE LENDERS NAMED HEREIN,

                       THE FIRST NATIONAL BANK OF CHICAGO,

                                    as Agent

                                       and

                         BROWN BROTHERS HARRIMAN & CO.,

                                   as Co-Agent

                                   DATED AS OF


                                December 21, 1998



                                   ARRANGED BY
                       FIRST CHICAGO CAPITAL MARKETS, INC.
<PAGE>   2
                                TABLE OF CONTENTS


ARTICLE I     DEFINITIONS......................................................1

ARTICLE II    THE REVOLVING CREDITS...........................................16
      2.1.    Revolving Credit Advances.......................................16
      2.2.    Ratable Loans...................................................17
      2.3.    Types of Revolving Credit Advances..............................17
      2.4.    Commitment Fee; Reductions in Aggregate Revolving Credit 
              Commitment......................................................17
      2.5.    Minimum Amount of Each Revolving Credit Advance.................18
      2.6.    Optional Principal Payments.....................................18
      2.7.    Mandatory Revolving Credit Commitment Reductions................18
      2.8.    Method of Selecting Types and Interest Periods for New 
              Revolving Credit Advances.......................................19
      2.9.    Conversion and Continuation of Outstanding Revolving Credit 
              Advances........................................................20
      2.10.   Changes in Interest Rate, etc...................................20
      2.11.   Rates Applicable After Default..................................20
      2.12.   Method of Payment...............................................21
      2.13.   Noteless Agreement; Evidence of Indebtedness....................21
      2.14.   Telephonic Notices..............................................22
      2.15.   Interest Payment Dates; Interest and Fee Basis..................22
      2.16.   Notification of Revolving Credit Advances, Interest Rates and 
              Prepayments, Commitment Reductions..............................22
      2.17.   Lending Installations...........................................22
      2.18.   Non-Receipt of Funds by the Agent...............................23

ARTICLE III   THE LETTER OF CREDIT FACILITY...................................23
      3.1.    Issuance of Letters of Credit...................................23
      3.2.    Participating Interests.........................................24
      3.3.    Reductions in Letter of Credit Commitment.......................25
      3.4.    Reimbursement Obligations.......................................25
      3.5.    Procedure for Issuance..........................................27
      3.6.    Nature of the Lenders' Obligations..............................27
      3.7.    Notification of Issuance Requests...............................28
      3.8.    Cash Collateral for Letters of Credit...........................28
      3.9.    Fees............................................................29
      3.10.   Extension of Letter of Credit Termination Date..................29

ARTICLE IV    YIELD PROTECTION; TAXES.........................................30
      4.1.    Yield Protection................................................30
      4.2.    Changes in Capital Adequacy Regulations.........................31
      4.3.    Availability of Types of Revolving Credit Advances..............31
      4.4.    Funding Indemnification.........................................31
<PAGE>   3
      4.5.    Taxes...........................................................32
      4.6.    Lender Statements; Survival of Indemnity........................33

ARTICLE V     CONDITIONS PRECEDENT............................................34
      5.1.    Initial Revolving Credit Loans and Letters of Credit............34
      5.2.    Each Revolving Credit Advance and Letter of Credit..............35

ARTICLE VI    REPRESENTATIONS AND WARRANTIES..................................35
      6.1.    Existence and Standing..........................................35
      6.2.    Authorization and Validity......................................36
      6.3.    No Conflict; Government Consent.................................36
      6.4.    Financial Statements............................................36
      6.5.    Statutory Financial Statements..................................37
      6.6.    Material Adverse Change.........................................37
      6.7.    Taxes...........................................................37
      6.8.    Litigation and Contingent Obligations...........................38
      6.9.    Subsidiaries....................................................38
      6.10.   ERISA...........................................................38
      6.11.   Defaults........................................................38
      6.12.   Accuracy of Information.........................................38
      6.13.   Regulation U....................................................38
      6.14.   Material Agreements.............................................38
      6.15.   Compliance With Laws............................................39
      6.16.   Ownership of Properties.........................................39
      6.17.   Plan Assets; Prohibited Transactions............................39
      6.18.   Environmental Matters...........................................39
      6.19.   Investment Company Act..........................................39
      6.20.   Public Utility Holding Company Act..............................39
      6.21.   Solvency........................................................39
      6.22.   Insurance Licenses..............................................40
      6.23.   Partnerships....................................................40
      6.24.   Lines of Business...............................................40
      6.25.   Reinsurance Practices...........................................40
      6.26.   Year 2000.......................................................40
      6.27.   Security........................................................40
      6.28.   Disclosure......................................................40

ARTICLE VII   COVENANTS.......................................................41
      7.1.    Financial Reporting.............................................41
      7.2.    Use of Proceeds.................................................44
      7.3.    Notice of Default...............................................44
      7.4.    Conduct of Business.............................................44
      7.5.    Taxes...........................................................45
      7.6.    Insurance.......................................................45
<PAGE>   4
      7.7.    Compliance with Laws............................................45
      7.8.    Maintenance of Properties.......................................45
      7.9.    Inspection; Maintenance of Books and Records....................45
      7.10.   Dividends and Stock Repurchases.................................45
      7.11.   Indebtedness....................................................45
      7.12.   Merger..........................................................46
      7.13.   Sale of Assets..................................................46
      7.14.   Investments and Acquisitions....................................46
      7.15.   Contingent Obligations..........................................47
      7.16.   Liens...........................................................47
      7.17.   Affiliates......................................................48
      7.18.   Amendments to Agreements........................................48
      7.19.   Change in Fiscal Year...........................................48
      7.20.   Inconsistent Agreements.........................................48
      7.21.   Year 2000.......................................................48
      7.22.   Reinsurance.....................................................48
      7.23.   Stock of Subsidiaries...........................................49
      7.24.   Financial Covenants.............................................49
              7.24.1.  Minimum Consolidated Tangible Net Worth................49
              7.24.2.  Minimum Statutory Surplus..............................49
              7.24.3.  Leverage Ratio.........................................49
              7.24.4.  Minimum Risk-Based Capital.............................49
      7.25.   Additional Pledge...............................................49

ARTICLE VIII  DEFAULTS........................................................50

ARTICLE IX    ACCELERATION, WAIVERS, AMENDMENTS AND REMEDIES..................52
      9.1.    Acceleration....................................................52
      9.2.    Amendments......................................................53
      9.3.    Preservation of Rights..........................................54

ARTICLE X     GENERAL PROVISIONS..............................................54
      10.1.   Survival of Representations.....................................54
      10.2.   Governmental Regulation.........................................55
      10.3.   Headings........................................................55
      10.4.   Entire Agreement................................................55
      10.5.   Numbers of Documents............................................55
      10.6.   Several Obligations; Benefits of this Agreement.................55
      10.7.   Expenses; Indemnification.......................................55
      10.8.   Accounting......................................................56
      10.9.   Severability of Provisions......................................56
      10.10.  Nonliability of Lenders.........................................56
      10.11.  Confidentiality.................................................56
      10.12.  Nonreliance.....................................................57
<PAGE>   5
      10.13.  Disclosure......................................................57

ARTICLE XI    THE AGENT.......................................................57
      11.1.   Appointment; Nature of Relationship.............................57
      11.2.   Powers..........................................................57
      11.3.   General Immunity................................................57
      11.4.   No Responsibility for Revolving Credit Loans, Recitals, etc.....58
      11.5.   Action on Instructions of Lenders...............................58
      11.6.   Employment of Agent and Counsel.................................58
      11.7.   Reliance on Documents; Counsel..................................58
      11.8.   Agent's Reimbursement and Indemnification.......................58
      11.9.   Notice of Default...............................................59
      11.10.  Rights as a Lender..............................................59
      11.11.  Lender Credit Decision..........................................59
      11.12.  Successor Agent.................................................60
      11.13.  Agents' Fees....................................................60
      11.14.  Delegation to Affiliates........................................60
      11.15.  Co-Agent........................................................60

ARTICLE XII   SETOFF; RATABLE PAYMENTS........................................61
      12.1.   Setoff..........................................................61
      12.2.   Ratable Payments................................................61

ARTICLE XIII  BENEFIT OF AGREEMENT; ASSIGNMENTS; PARTICIPATIONS...............61
      13.1.   Successors and Assigns..........................................61
      13.2.   Participations..................................................62
              13.2.1.  Permitted Participants; Effect.........................62
              13.2.2.  Voting Rights..........................................62
              13.2.3.  Benefit of Setoff......................................62
      13.3.   Assignments.....................................................63
              13.3.1.  Permitted Assignments..................................63
              13.3.2.  Effect; Effective Date.................................63
      13.4.   Dissemination of Information....................................63
      13.5.   Tax Treatment...................................................64
      13.6.   Restatement Date Assignments....................................64

ARTICLE XIV   NOTICES.........................................................65
      14.1.   Notices.........................................................65
      14.2.   Change of Address...............................................65

ARTICLE XV    COUNTERPARTS....................................................65

ARTICLE XVI   CHOICE OF LAW; CONSENT TO JURISDICTION;
              WAIVER OF JURY TRIAL............................................65
<PAGE>   6
      16.1.   CHOICE OF LAW...................................................65
      16.2.   CONSENT TO JURISDICTION.........................................66
      16.3.   WAIVER OF JURY TRIAL............................................66
<PAGE>   7
                                      -vi-
<PAGE>   8
                                      -vii-
<PAGE>   9
                                     -viii-
<PAGE>   10
                                    SCHEDULES

Pricing Schedule
Schedule 1    -   Commitments
Schedule 3.1  -   Existing Letters of Credit
Schedule 6.9  -   Subsidiaries
Schedule 6.22 -   Licenses
Schedule 6.23 -   Partnerships
Schedule 6.24 -   Existing Lines of Business
Schedule 7.16 -   Liens
Schedule 7.22 -   Reinsurance Guidelines

                                    EXHIBITS

Exhibit A         Revolving Credit Note
Exhibit B         Compliance Certificate
Exhibit C         Assignment Agreement


                                      -ix-
<PAGE>   11
                      AMENDED AND RESTATED CREDIT AGREEMENT


      This Amended and Restated Credit Agreement, dated as of December 21, 1998,
is among THE NAVIGATORS GROUP, INC., a Delaware corporation, the Lenders, THE
FIRST NATIONAL BANK OF CHICAGO, individually and as Agent, and BROWN BROTHERS
HARRIMAN & CO., individually and as Co-Agent.


                                R E C I T A L S:

      A. The Borrower, the Agent, the Co-Agent and certain financial
institutions have entered into that certain Credit Agreement, dated as of
November 20, 1998 (the "Existing Credit Agreement"), pursuant to which the
lenders party thereto agreed to make financial accommodations to the Borrower
under revolving credit and letter of credit facilities, subject to certain
restrictions set forth therein, in an aggregate principal amount not to exceed
$75,000,000 at any one time outstanding.

      B. The Borrower has requested that the Existing Credit Agreement be
amended and restated in order to increase the amount of the letter of credit
facility and to make certain other changes to the Existing Credit Agreement.

      C. The Borrower, the Agent, the Co-Agent and the Lenders desire to amend
and restate the Existing Credit Agreement to, among other things, accomplish
such amendments.

      NOW, THEREFORE, in consideration of the mutual covenants and undertakings
herein contained, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Borrower, the Lenders and the
Agent hereby agree to amend and restate the Existing Credit Agreement as
follows:


                                    ARTICLE I

                                   DEFINITIONS

      As used in this Agreement:

      "Acquisition" means any transaction, or any series of related
transactions, consummated on or after the date of this Agreement, by which the
Borrower or any of its Subsidiaries (a) acquires any on-going business or all or
substantially all of the assets of any firm, corporation or limited liability
company, or division thereof, whether through purchase of assets, merger,
amalgamation or otherwise or (b) directly or indirectly acquires (in one
transaction or as the most recent transaction in a series of transactions) at
least a majority (in number of votes) of the securities of a corporation which
have ordinary voting power for the election of directors (other than securities
having such power only by 
<PAGE>   12
reason of the happening of a contingency) or a majority (by percentage or voting
power) of the outstanding ownership interests of a partnership or limited
liability company.

      "Affiliate" of any Person means any other Person directly or indirectly
controlling, controlled by or under common control with such Person. A Person
shall be deemed to control another Person if the controlling Person owns 10% or
more of any class of voting securities (or other ownership interests) of the
controlled Person or possesses, directly or indirectly, the power to direct or
cause the direction of the management or policies of the controlled Person,
whether through ownership of stock, by contract or otherwise.

      "Agent" means The First National Bank of Chicago in its capacity as
contractual representative of the Lenders pursuant to Article XI, and not in its
individual capacity as a Lender, and any successor Agent appointed pursuant to
Article XI.

      "Aggregate Revolving Credit Commitment" means the aggregate of the
Revolving Credit Commitments of all the Lenders, as reduced from time to time
pursuant to the terms hereof. The initial Aggregate Revolving Credit Commitment
is $25,000,000.

      "Agreement" means this Amended and Restated Credit Agreement, as it may be
amended, modified or restated and in effect from time to time.

      "Agreement Accounting Principles" means generally accepted accounting
principles as in effect from time to time, applied in a manner consistent with
those used in preparing the financial statements referred to in Section 6.4;
provided, however, that for purposes of all computations required to be made
with respect to compliance by the Borrower with Section 7.24, such term shall
mean generally accepted accounting principles as in effect on the Closing Date,
applied in a manner consistent with those used in preparing the financial
statements referred to in Section 6.4.

      "Alternate Base Rate" means, for any day, a rate of interest per annum
equal to the higher of (a) the Corporate Base Rate for such day, and (b) the sum
of the Federal Funds Effective Rate for such day plus 1/2% per annum.

      "Alternate Base Rate Advance" means a Revolving Credit Advance which,
except as otherwise provided in Section 2.11, bears interest at the Alternate
Base Rate.

      "Annual Statement" means the annual statutory financial statement of any
Insurance Subsidiary required to be filed with the insurance commissioner (or
similar authority) of its jurisdiction of incorporation, which statement shall
be in the form required by such Insurance Subsidiary's jurisdiction of
incorporation or, if no specific form is so required, in the form of financial
statements permitted by such insurance commissioner (or such similar authority)
to be used for filing annual statutory financial statements and shall contain
the type of information permitted by such insurance commissioner (or such
similar authority) to be disclosed therein, together with all exhibits or
schedules filed therewith.

      "Applicable Commitment Fee Rate" means, at any time, the percentage per
annum at which commitment fees are accruing on the unused portion of the
Aggregate Revolving Credit Commitment 
<PAGE>   13
and availability fees are accruing on the unused portion of the Letter of Credit
Commitment at such time as set forth in the Pricing Schedule.

      "Applicable Letter of Credit Participation Fee Rate" means, at any time,
the percentage per annum at which letter of credit participation fees are
accruing on the Letters of Credit at such time as set forth in the Pricing
Schedule.

      "Applicable Margin" means, with respect to Revolving Credit Advances of
any Type at any time, the percentage rate per annum which is applicable at such
time with respect to Revolving Credit Advances of such Type as set forth in the
Pricing Schedule.

      "Approved Reinsurer" means a reinsurer which satisfies the criteria set
forth in the Reinsurance Guidelines for entering into reinsurance or
retrocession agreements with the Borrower.

      "Arranger" means First Chicago Capital Markets, Inc., a Delaware
corporation, and its successors.

      "Article" means an article of this Agreement unless another document is
specifically referenced.

      "Asset Disposition" means any sale, transfer or other disposition of any
asset of the Borrower or any Subsidiary in a single transaction or in a series
of related transactions (other than the sale of inventory or Investments (other
than stock in Subsidiaries) in the ordinary course).

      "Authorized Officer" means any of the president, chief financial officer
or treasurer of the Borrower, acting singly.

      "Bankruptcy Code" means Title 11, United States Code, sections 1 et seq.,
as the same may be amended from time to time, and any successor thereto or
replacement therefor which may be hereafter enacted.

      "Borrower" means The Navigators Group, Inc., a Delaware corporation, and
its successors and assigns.

      "Borrower's S&P Financial Strength Rating" means, at any time, the rating
issued by S&P with respect to the financial strength of the Borrower.

      "Borrowing Date" means a date on which a Revolving Credit Advance is made
or a Letter of Credit is issued hereunder.

      "Borrowing Notice" is defined in Section 2.8.

      "Brown Brothers" means Brown Brothers Harriman & Co. in its individual
capacity and its successors.


                                       -3-
<PAGE>   14
      "Business Day" means (a) with respect to any borrowing, payment or rate
selection of Eurodollar Advances, a day (other than a Saturday or Sunday) on
which banks generally are open in Chicago and New York for the conduct of
substantially all of their commercial lending activities and on which dealings
in United States dollars are carried on in the London interbank market and (b)
for all other purposes, a day (other than a Saturday or Sunday) on which banks
generally are open in Chicago for the conduct of substantially all of their
commercial lending activities.

      "Capitalized Lease" of a Person means any lease of Property by such Person
as lessee which would be capitalized on a balance sheet of such Person prepared
in accordance with Agreement Accounting Principles.

      "Capitalized Lease Obligations" of a Person means the amount of the
obligations of such Person under Capitalized Leases which would be shown as a
liability on a balance sheet of such Person prepared in accordance with
Agreement Accounting Principles.

      "Cash Collateral Investments" means (a) short-term obligations of, or
fully guaranteed by, the United States of America, (b) commercial paper rated
A-1 or better by S&P or P-1 or better by Moody's, (c) demand deposit accounts
maintained in the ordinary course of business, and (d) certificates of deposit
issued by and time deposits with commercial banks (whether domestic or foreign)
having capital and surplus in excess of $100,000,000; provided in each case that
the same provides for payment of both principal and interest (and not principal
alone or interest alone) and is not subject to any contingency regarding the
payment of principal or interest and has a maturity of not more than six months.

      "Cash Collateral Security Agreement" means a security agreement in form
and substance satisfactory to the Agent executed by the Borrower in favor of the
Agent, on behalf of itself and the Lenders, pursuant to this Agreement, pledging
to the Agent a security interest in all Cash Collateral Investments delivered to
the Agent pursuant to the terms hereof, as the same may be amended, supplemented
or otherwise modified from time to time.

      "Cash Equivalent Investments" means (a) short-term obligations of, or
fully guaranteed by, the United States of America, (b) commercial paper rated
A-1 or better by S&P or P-1 or better by Moody's, (c) demand deposit accounts
maintained in the ordinary course of business, and (d) certificates of deposit
issued by and time deposits with commercial banks (whether domestic or foreign)
having capital and surplus in excess of $500,000,000; provided in each case that
the same provides for payment of both principal and interest (and not principal
alone or interest alone) and is not subject to any contingency regarding the
payment of principal or interest.

      "Change" is defined in Section 4.2.

      "Change in Control" means (a) the acquisition by any Person, or two or
more Persons acting in concert of beneficial ownership (within the meaning of
Rule 13d-3 of the Securities and Exchange Commission under the Securities
Exchange Act of 1934) of 20% or more of the outstanding shares of voting stock
of the Borrower, or (b) the members of the Terence Deeks Family shall cease to
own, 


                                       -4-
<PAGE>   15
in the aggregate, free and clear of all Liens and other encumbrances, at least
33-1/3% of the outstanding shares of voting stock of the Borrower on a fully
diluted basis.

      "Closing Date" means November 20, 1998.

      "Code" means the Internal Revenue Code of 1986, as amended or otherwise
modified from time to time.

      "Condemnation" is defined in Section 8.8.

      "Consolidated" or "consolidated", when used in connection with any
calculation, means a calculation to be determined on a consolidated basis for
the Borrower and its Consolidated Subsidiaries in accordance with Agreement
Accounting Principles.

      "Consolidated Net Income" means, for any period, the net income (or loss)
of the Borrower and its Consolidated Subsidiaries calculated on a consolidated
basis for such period, all as determined in accordance with Agreement Accounting
Principles.

      "Consolidated Net Worth" means, for any period, the consolidated
stockholders' equity of the Borrower and its Consolidated Subsidiaries
calculated on a consolidated basis for such period, all as determined in
accordance with Agreement Accounting Principles, excluding, however, for the
purposes of Section 7.24.3, the effect of any unrealized gain or loss reported
under Statement of Financial Accounting Standards No. 115.

      "Consolidated Person" means, for the taxable year of reference, each
Person which is a member of the affiliated group of the Borrower if Consolidated
returns are or shall be filed for such affiliated group for federal income tax
purposes or any combined or unitary group of which the Borrower is a member for
state income tax purposes.

      "Consolidated Subsidiaries" means all Subsidiaries of the Borrower which
should be included in the Borrower's consolidated financial statements, all as
determined in accordance with Agreement Accounting Principles.

      "Consolidated Tangible Net Worth" means the excess of (a) Consolidated
Total Tangible Assets over (b) Consolidated Total Liabilities, excluding,
however, for the purposes of Section 7.24.1, the effect of any unrealized gain
or loss reported under Statement of Financial Accounting Standards No. 115.

      "Consolidated Total Assets" means, at any time, the total assets of the
Borrower and its Consolidated Subsidiaries calculated on a consolidated basis as
of such time, all as determined in accordance with Agreement Accounting
Principles.

      "Consolidated Total Intangible Assets" means, at any time, the total
intangible assets of the Borrower and its Consolidated Subsidiaries calculated
on a consolidated basis as of such time 


                                       -5-
<PAGE>   16
including, but not limited to, deferred policy acquisition costs, goodwill,
patents, trademarks, tradenames, copyrights and franchises.

      "Consolidated Total Liabilities" means, at any time, the total liabilities
of the Borrower and its Consolidated Subsidiaries calculated on a consolidated
basis as of such time, all as determined in accordance with Agreement Accounting
Principles.

      "Consolidated Total Tangible Assets" means, at any time, Consolidated
Total Assets minus Consolidated Total Intangible Assets.

      "Contingent Obligation" of a Person means any agreement, undertaking or
arrangement by which such Person assumes, guarantees, endorses, contingently
agrees to purchase or provide funds for the payment of, or otherwise becomes or
is contingently liable upon, the obligation or liability of any other Person, or
agrees to maintain the net worth or working capital or other financial condition
of any other Person, or otherwise assures any creditor of such other Person
against loss, including, without limitation, any comfort letter, operating
agreement, take-or-pay contract or the obligations of any such Person as general
partner of a partnership with respect to the liabilities of the partnership. The
term "Contingent Obligation" shall not include the obligations of any Insurance
Subsidiary arising under any insurance policy or reinsurance agreement entered
into in the ordinary course of business.

      "Controlled Group" means all members of a controlled group of corporations
or other business entities and all trades or businesses (whether or not
incorporated) under common control which, together with the Borrower or any of
its Subsidiaries, are treated as a single employer under Section 414 of the
Code.

      "Conversion/Continuation Notice" is defined in Section 2.9.

      "Conversion Differential" is defined in Section 3.1(e).

      "Corporate Base Rate" means a rate per annum equal to the corporate base
rate of interest announced by First Chicago from time to time, changing when and
as said corporate base rate changes. The Corporate Base Rate is a reference rate
and does not necessarily represent the lowest or best rate of interest actually
charged to any customer. First Chicago may make commercial loans or other loans
at rates of interest at, above or below the Corporate Base Rate.

      "Default" means an event described in Article VIII.

      "Department" is defined in Section 6.5.

      "Dollars" and the sign "$" mean lawful money of the United States of
America.

      "Environmental Laws" means any and all federal, state, local and foreign
statutes, laws, judicial decisions, regulations, ordinances, rules, judgments,
orders, decrees, plans, injunctions, permits, concessions, grants, franchises,
licenses, agreements and other governmental restrictions 


                                       -6-
<PAGE>   17
relating to (a) the protection of the environment, (b) the effect of the
environment on human health, (c) emissions, discharges or releases of
pollutants, contaminants, hazardous substances or wastes into surface water,
ground water or land, or (d) the manufacture, processing, distribution, use,
treatment, storage, disposal, transport or handling of pollutants, contaminants,
hazardous substances or wastes or the clean-up or other remediation thereof.

      "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time, and any rule or regulation issued thereunder.

      "Eurodollar Advance" means a Revolving Credit Advance which, except as
otherwise provided in Section 2.11, bears interest at the applicable Eurodollar
Rate.

      "Eurodollar Base Rate" means, with respect to a Eurodollar Advance for the
relevant Interest Period, the rate determined by the Agent to be the rate at
which First Chicago offers to place deposits in U.S. dollars with first-class
banks in the London interbank market at approximately 11:00 a.m. (London time)
two (2) Business Days prior to the first day of such Interest Period, in the
approximate amount of First Chicago's relevant Eurodollar Loan and having a
maturity approximately equal to such Interest Period.

      "Eurodollar Loan" means a Revolving Credit Loan which bears interest at
the applicable Eurodollar Rate.

      "Eurodollar Rate" means, with respect to a Eurodollar Advance for the
relevant Interest Period, the sum of (a) the quotient of (i) the Eurodollar Base
Rate applicable to such Interest Period, divided by (ii) one minus the Reserve
Requirement (expressed as a decimal) applicable to such Interest Period, plus
(b) the Applicable Margin. The Eurodollar Rate shall be rounded to the next
higher multiple of 1/16 of 1% if the rate is not such a multiple.

      "Excluded Taxes" means, in the case of each Lender or applicable Lending
Installation and the Agent, taxes imposed on its overall net income, and
franchise taxes imposed on it, by (a) the jurisdiction under the laws of which
such Lender or the Agent is incorporated or organized or (b) the jurisdiction in
which the Agent's or such Lender's principal executive office or such Lender's
applicable Lending Installation is located.

      "Exhibit" refers to an exhibit to this Agreement, unless another document
is specifically referenced.

      "Existing Credit Agreement" is defined in the Recitals hereto.

      "Existing Lines of Business" is defined in Section 6.24.

      "Extension Request" is defined in Section 3.10.

      "Facility Documents" means this Agreement, any Revolving Credit Notes
issued pursuant to Section 2.13, the Security Documents, the Reimbursement
Agreements and the other documents and agreements contemplated hereby and
executed by the Borrower in favor of the Agent or any Lender.


                                       -7-
<PAGE>   18
      "Federal Funds Effective Rate" means, for any day, an interest rate per
annum equal to the weighted average of the rates on overnight Federal funds
transactions with members of the Federal Reserve System arranged by Federal
funds brokers on such day, as published for such day (or, if such day is not a
Business Day, for the immediately preceding Business Day) by the Federal Reserve
Bank of New York, or, if such rate is not so published for any day which is a
Business Day, the average of the quotations at approximately 10:00 a.m. (Chicago
time) on such day on such transactions received by the Agent from three Federal
funds brokers of recognized standing selected by the Agent in its sole
discretion.

      "Fee Letter" is defined in Section 10.4.

      "First Chicago" means The First National Bank of Chicago in its individual
capacity, and its successors.

      "Fiscal Quarter" means one of the four three-month accounting periods
comprising a Fiscal Year.

      "Fiscal Year" means the twelve-month accounting period commencing on
January 1 and ending December 31 of each year.

      "Governmental Authority" means any government (foreign or domestic) or any
state or other political subdivision thereof or any governmental body, agency,
authority, department or commission (including without limitation any taxing
authority or political subdivision) or any instrumentality or officer thereof
(including without limitation any court or tribunal and any board of insurance,
insurance department or insurance commissioner) exercising executive,
legislative, judicial, regulatory or administrative functions of or pertaining
to government and any corporation, partnership or other entity directly or
indirectly owned or controlled by or subject to the control of any of the
foregoing.

      "Indebtedness" of a Person means such Person's (a) obligations for
borrowed money, (b) obligations representing the deferred purchase price of
Property or services (other than accounts payable arising in the ordinary course
of such Person's business payable on terms customary in the trade), (c)
obligations, whether or not assumed, secured by Liens or payable out of the
proceeds or production from Property now or hereafter owned or acquired by such
Person, (d) obligations which are evidenced by notes, acceptances, or other
instruments, (e) obligations of such Person to purchase securities or other
Property arising out of or in connection with the sale of the same or
substantially similar securities or Property, (f) Capitalized Lease Obligations,
(g) Contingent Obligations, (h) actual and contingent reimbursement obligations
in respect of letters of credit, (i) any other obligation for borrowed money or
other financial accommodation which in accordance with Agreement Accounting
Principles would be shown as a liability on the consolidated balance sheet of
such Person, (j) any liability under any financing lease or so-called "synthetic
lease" transaction entered into by such Person and (k) any obligation arising
with respect to any other transaction which is the functional equivalent of or
takes the place of borrowing but which does not constitute a liability on the
consolidated balance sheet of such Person.


                                       -8-
<PAGE>   19
      "Insurance Subsidiary" means each of Navigators, NIC and any other
domestic Subsidiary acquired or formed after the Closing Date which is engaged
in, or is authorized to engage in, the insurance business.

      "Interest Period" means, with respect to a Eurodollar Advance, a period of
one, two, three or six months commencing on a Business Day selected by the
Borrower pursuant to this Agreement. Such Interest Period shall end on the day
which corresponds numerically to such date one, two, three or six months
thereafter, provided, however, that if there is no such numerically
corresponding day in such next, second, third or sixth succeeding month, such
Interest Period shall end on the last Business Day of such next, second, third
or sixth succeeding month. If an Interest Period would otherwise end on a day
which is not a Business Day, such Interest Period shall end on the next
succeeding Business Day, provided, however, that if said next succeeding
Business Day falls in a new calendar month, such Interest Period shall end on
the immediately preceding Business Day.

      "Investment" of a Person means any loan, advance (other than commission,
travel and similar advances to officers and employees made in the ordinary
course of business), extension of credit (other than accounts receivable arising
in the ordinary course of business on terms customary in the trade) or
contribution of capital by such Person; stocks, bonds, mutual funds, partnership
interests, membership interests, notes, debentures or other securities owned by
such Person; any deposit accounts and certificate of deposit owned by such
Person; and structured notes, derivative financial instruments and other similar
instruments or contracts owned by such Person.

      "Issuance Request" is defined in Section 3.5.

      "Issuer" means First Chicago.

      "Lenders" means the lending institutions listed on the signature pages of
this Agreement and their respective successors and assigns.

      "Lending Installation" means, with respect to a Lender or the Agent, the
office, branch, subsidiary or affiliate of such Lender or the Agent listed on
the signature pages hereof or on a Schedule or otherwise selected by such Lender
or the Agent pursuant to Section 2.17.

      "Letter of Credit" means a letter of credit issued pursuant to Article
III.

      "Letter of Credit Cash Collateral Account" is defined in Section 9.1. Such
account and the related cash collateralization shall be subject to documentation
satisfactory to the Agent and the taking of all steps required to give the Agent
a perfected security interest in the Cash Collateral Investments.

      "Letter of Credit Commitment" means the aggregate Letter of Credit
Participation Amounts of all of the Lenders, as reduced from time to time
pursuant to the terms hereof. The initial Letter of Credit Commitment is
$60,000,000.


                                       -9-
<PAGE>   20
      "Letter of Credit Obligations" means as at the time of determination
thereof, the sum of (a) the Reimbursement Obligations then outstanding and (b)
the aggregate then undrawn face amount of the then outstanding Letters of
Credit.

      "Letter of Credit Participation Amount" means, for each Lender, the
maximum face amount of Letters of Credit (which are approved by all Lenders in
their sole discretion in accordance with Section 3.1) in which such Lender
participates not exceeding the amount set forth on Schedule 1 or as set forth in
any Notice of Assignment relating to any assignment that has become effective
pursuant to Section 13.3.2, as such amount may be modified from time to time
pursuant to the terms hereof.

      "Letter of Credit Termination Date" means November 19, 2000 or any later
date as may be specified as the Letter of Credit Termination Date in accordance
with Section 3.10 or any earlier date on which the Letter of Credit Commitment
is reduced to zero or otherwise terminated pursuant to the terms hereof.

      "Leverage Ratio" means, at any time, the ratio of (a) the consolidated
Indebtedness of the Borrower and its Consolidated Subsidiaries (excluding any
letter of credit obligations incurred by the Borrower and its Consolidated
Subsidiaries in the ordinary course of business) at such time to (b) the sum of
(i) the consolidated Indebtedness of the Borrower and its Consolidated
Subsidiaries (excluding any letter of credit obligations incurred by the
Borrower and its Consolidated Subsidiaries in the ordinary course of business)
plus (ii) Consolidated Net Worth at such time.

      "License" means any license, certificate of authority, permit or other
authorization which is required to be obtained from any Governmental Authority
in connection with the operation, ownership or transaction of insurance
business.

      "Lien" means any security interest, lien (statutory or other), mortgage,
pledge, hypothecation, assignment, deposit arrangement, encumbrance or
preference, priority or other security agreement or preferential arrangement of
any kind or nature whatsoever (including, without limitation, the interest of a
vendor or lessor under any conditional sale, Capitalized Lease or other title
retention agreement).

      "Loss Reserves" means, with respect to any Insurance Subsidiary at any
time, the sum of (a) all losses, including incurred losses of such Insurance
Subsidiary at such time shown on page 3, line 25 of the Annual Statement of such
Insurance Subsidiary plus (b) all loss adjustment expenses of such Insurance
Subsidiary at such time shown on page 3, line 2 of the Annual Statement of such
Insurance Subsidiary, as determined in accordance with SAP.

      "Margin Stock" has the meaning assigned to that term under Regulation U.

      "Material Adverse Effect" means a material adverse effect on (a) the
business, Property, condition (financial or otherwise) or results of operations
of any of (i) the Borrower or (ii) the Subsidiaries taken as a whole, (b) the
ability of the Borrower to perform its obligations under the Facility Documents,
or (c) the validity or enforceability of any of the Facility Documents or the
rights or remedies of the Agent or the Lenders thereunder.


                                      -10-
<PAGE>   21
      "Moody's" means Moody's Investors Service, Inc.

      "MUL" means Millennium Underwriting Limited, which entity is a corporate
name with limited liability at Lloyd's of London.

      "Moody's" means Moody's Investors Service, Inc.

      "Multiemployer Plan" means a Plan maintained pursuant to a collective
bargaining agreement or any other arrangement to which the Borrower or any
member of the Controlled Group is a party to which more than one employer is
obligated to make contributions.

      "NAIC" means the National Association of Insurance Commissioners or any
successor thereto, or in lieu thereof, any other association, agency or other
organization performing advisory, coordination or other like functions among
insurance departments, insurance commissioners and similar Governmental
Authorities of the various states of the United States toward the promotion of
uniformity in the practices of such Governmental Authorities.

      "Navigators" means Navigators Insurance Company, a New York corporation.

      "NCUL" means Navigators Corporate Underwriters Limited, which entity is a
corporate name with limited liability at Lloyd's of London.

      "Net Available Proceeds" means (a) with respect to any Asset Disposition,
the sum of cash or readily marketable cash equivalents received (including by
way of a cash generating sale or discounting of a note or account receivable)
therefrom, whether at the time of such disposition or subsequent thereto, or (b)
with respect to any sale or issuance of any debt or equity securities of the
Borrower or any Subsidiary, cash or readily marketable cash equivalents received
therefrom, whether at the time of such disposition or subsequent thereto, net,
in either case, of all legal, title and recording tax expenses, commissions and
other fees and all costs and expenses incurred and, in the case of an Asset
Disposition, net of all payments made by the Borrower or any of its Subsidiaries
on any Indebtedness which is secured by such assets pursuant to a permitted Lien
upon or with respect to such assets or which must, by the terms of such Lien, in
order to obtain a necessary consent to such Asset Disposition, or by applicable
law, be repaid out of the proceeds from such Asset Disposition.

      "NIC" means NIC Insurance Company, a New York corporation.

      "Non-U.S. Lender" is defined in Section 4.5(d).

      "Notice of Assignment" is defined in Section 13.3.2.

      "Obligations" means all unpaid principal of and accrued and unpaid
interest on the Revolving Credit Loans, the Letter of Credit Obligations and all
other liabilities (if any), whether actual or contingent, of the Borrower with
respect to Letters of Credit, all accrued and unpaid fees and all 


                                      -11-
<PAGE>   22
expenses, reimbursements, indemnities and other obligations of the Borrower to
the Lenders or to any Lender, the Agent or any indemnified party hereunder
arising under any of the Facility Documents.

      "Other Taxes" is defined in Section 4.5(b).

      "Participants" is defined in Section 13.2.1.

      "Payment Date" means the last day of each January, April, July and
October.

      "PBGC" means the Pension Benefit Guaranty Corporation or any successor
thereto.

      "Person" means any natural person, corporation, firm, joint venture,
partnership, association, enterprise, limited liability company, trust or other
entity or organization, or any government or political subdivision or any
agency, department or instrumentality thereof.

      "Plan" means an employee pension benefit plan which is covered by Title IV
of ERISA or subject to the minimum funding standards under Section 412 of the
Code as to which the Borrower or any member of the Controlled Group may have any
liability.

      "Pledge Agreement" means that certain Stock Pledge Agreement, dated as of
the Closing Date, between the Borrower and the Agent, as the same may be
amended, supplemented or otherwise modified from time to time.

      "Pounds" and the sign "pound sterling" mean lawful money of the United
Kingdom.

      "Pricing Schedule" means the Schedule attached hereto identified as such.

      "Property" of a Person means any and all property, whether real, personal,
tangible, intangible, or mixed, of such Person, or other assets owned, leased or
operated by such Person.

      "pro-rata" means, when used with respect to a Lender, and any described
aggregate or total amount, an amount equal to such Lender's pro-rata share or
portion based on its percentage of the Aggregate Revolving Credit Commitment or
the Letter of Credit Commitment, as the case may be.

      "Purchasers" is defined in Section 13.3.1.

      "Regulation D" means Regulation D of the Board of Governors of the Federal
Reserve System as from time to time in effect and shall include any successor
thereto or other regulation or official interpretation of said Board of
Governors relating to reserve requirements applicable to member banks of the
Federal Reserve System.

      "Regulation T" means Regulation T of the Board of Governors of the Federal
Reserve System as from time to time in effect and shall include any successor
thereto or other regulation or official interpretation of such Board of
Governors relating to the extension of credit by securities brokers and dealers
for the purpose of purchasing or carrying margin stocks applicable to such
Persons.


                                      -12-
<PAGE>   23
      "Regulation U" means Regulation U of the Board of Governors of the Federal
Reserve System as from time to time in effect and shall include any successor
thereto or other regulation or official interpretation of said Board of
Governors relating to the extension of credit by banks for the purpose of
purchasing or carrying margin stocks applicable to member banks of the Federal
Reserve System.

      "Regulation X" means Regulation X of the Board of Governors of the Federal
Reserve Systems from time to time in effect and shall include any successor
thereto or other regulation or official interpretation of said Board of
Governors relating to the extension of credit by the specified lenders for the
purpose of purchasing or carrying margin stocks applicable to such Persons.

      "Reimbursement Agreement" means a letter of credit application and
reimbursement agreement in such form as the Issuer may from time to time employ
in the ordinary course of business.

      "Reimbursement Obligations" means, at any time, the aggregate (without
duplication) of the Obligations of the Borrower to the Lenders, the Issuer
and/or the Agent in respect of all unreimbursed payments or disbursements made
by the Lenders, the Issuer and/or the Agent under or in respect of draws made
under the Letters of Credit.

      "Reinsurance Guidelines" is defined in Section 7.22(c).

      "Release" is defined in the Comprehensive Environmental Response,
Compensation and Liability Act, as amended, 42 U.S.C. 39601 et seq.

      "Reportable Event" means a reportable event as defined in Section 4043 of
ERISA and the regulations issued under such section, with respect to a Plan,
excluding, however, such events as to which the PBGC has by regulation waived
the requirement of Section 4043(a) of ERISA that it be notified within 30 days
of the occurrence of such event; provided, however, that a failure to meet the
minimum funding standard of Section 412 of the Code and of Section 302 of ERISA
shall be a Reportable Event regardless of the issuance of any such waiver of the
notice requirement in accordance with either Section 4043(a) of ERISA or Section
412(d) of the Code.

      "Required Lenders" means Lenders in the aggregate having at least 66-2/3%
of the sum of (a) the Aggregate Revolving Credit Commitment or, if the Aggregate
Revolving Credit Commitment has been terminated, the aggregate unpaid principal
amount of the outstanding Revolving Credit Loans plus (b) the Letter of Credit
Commitment or, if the Letter of Credit Commitment has been terminated, the
aggregate amount of the outstanding Letter of Credit Obligations.

      "Reserve Requirement" means, with respect to an Interest Period, the
maximum aggregate reserve requirement (including all basic, supplemental,
marginal and other reserves) which is imposed under Regulation D on Eurocurrency
liabilities.

      "Response Date" is defined in Section 3.10.


                                      -13-
<PAGE>   24
      "Restatement Date" means December 21, 1998.

      "Revolving Credit Advance" means a borrowing hereunder (a) made by the
Lenders on the same Borrowing Date, or (b) converted or continued by the Lenders
on the same date of conversion or continuation, consisting, in either case, of
the aggregate amount of the several Revolving Credit Loans of the same Type and,
in the case of Eurodollar Loans, for the same Interest Period.

      "Revolving Credit Commitment" means, for each Lender, the obligation of
such Lender to make Revolving Credit Loans not exceeding the amount set forth on
Schedule 1 or as set forth in any Notice of Assignment relating to any
assignment that has become effective pursuant to Section 13.3.2, as such amount
may be modified from time to time pursuant to the terms hereof.

      "Revolving Credit Loan" means, with respect to a Lender, any loan made by
such Lender pursuant to Article II (or any conversion or continuation thereof).

      "Revolving Credit Note" means any promissory note issued at the request of
a Lender pursuant to Section 2.13, including any amendment, modification,
renewal or replacement of such promissory note.

      "Revolving Credit Termination Date" means November 19, 2003 or any earlier
date on which the Aggregate Revolving Credit Commitment is reduced to zero or
otherwise terminated pursuant to the terms hereof.

      "Risk-Based Capital Guidelines" is defined in Section 4.2.

      "S&P" means Standard and Poor's Ratings Services, a division of The McGraw
Hill Companies, Inc.

      "SAP" means, with respect to any Insurance Subsidiary, the statutory
accounting practices prescribed or permitted by the insurance commissioner (or
other similar authority) in the jurisdiction of such Person for the preparation
of annual statements and other financial reports by insurance companies of the
same type as such Person in effect from time to time, applied in a manner
consistent with those used in preparing the Statutory Financial Statements
referred to in Section 6.5.

      "Schedule" refers to a specific schedule to this Agreement, unless another
document is specifically referenced.

      "Section" means a numbered section of this Agreement, unless another
document is specifically referenced.

      "Security Documents" means the Pledge Agreement and the Cash Collateral
Security Agreement.


                                      -14-
<PAGE>   25
      "Significant Insurance Subsidiary" means a Significant Subsidiary which is
an Insurance Subsidiary.

      "Significant Subsidiary" means, at any time, a direct domestic Subsidiary
of the Borrower the assets of which are greater than or equal to five percent
(5%) of the Consolidated Total Assets of the Borrower and its Consolidated
Subsidiaries.

      "Single Employer Plan" means a Plan maintained by the Borrower or any
member of the Controlled Group for employees of the Borrower or any member of
the Controlled Group.

      "Somerset Companies" means, collectively, Somerset Marine, Inc., a New
York corporation, Somerset Insurance Services of California, Inc., a California
corporation, Somerset Insurance Services of Texas, Inc., a Texas corporation,
Somerset Insurance Services of Washington, Inc., a Washington corporation, and
Somerset Asia Pacific Pty. Ltd., an Australian corporation; and in the event any
or all of the foregoing corporations merge into each other in accordance with
the terms of this Agreement, the surviving corporation of such merger.

      "Statutory Financial Statements" is defined in Section 6.5.

      "Statutory Net Income" means, with respect to any Insurance Subsidiary for
any computation period, the net income earned by such Insurance Subsidiary
during such period, as determined in accordance with SAP ("Underwriting and
Investment Exhibit, Statement of Income" statement, Page 4, Line 16 of the
Annual Statement).

      "Statutory Surplus" means, with respect to any Insurance Subsidiary at any
time, the statutory capital and surplus of such Insurance Subsidiary at such
time, as determined in accordance with SAP ("Liabilities, Surplus and Other
Funds" statement, page 3, line 25 of the Annual Statement).

      "Subsidiary" of a Person means (a) any corporation more than 50% of the
outstanding securities having ordinary voting power of which shall at the time
be owned or controlled, directly or indirectly, by such Person or by one or more
of its Subsidiaries or by such Person and one or more of its Subsidiaries, or
(b) any partnership, association, joint venture, limited liability company or
similar business organization more than 50% of the ownership interests having
ordinary voting power of which shall at the time be so owned or controlled.
Unless otherwise expressly provided, all references herein to a "Subsidiary"
shall mean a Subsidiary of the Borrower.

      "Substantial Portion" means, with respect to the Property of the Borrower
and its Consolidated Subsidiaries, Property which (a) represents more than 10%
of the Consolidated Total Assets of the Borrower and its Consolidated
Subsidiaries, as would be shown in the consolidated financial statements of the
Borrower and its Consolidated Subsidiaries as at the end of the quarter next
preceding the date on which such determination is made, or (b) is responsible
for more than 10% of the consolidated net sales or of the Consolidated Net
Income of the Borrower and its Consolidated Subsidiaries for the 12-month period
ending as of the end of the quarter next preceding the date of determination.


                                      -15-
<PAGE>   26
      "Taxes" means any and all present or future taxes, duties, levies,
imposts, deductions, charges or withholdings, and any and all liabilities with
respect to the foregoing, but excluding Excluded Taxes.

      "Terence Deeks Family" means, collectively, Terence N. Deeks; his spouse;
any natural person who is a lineal descendant of Terence N. Deeks; the spouse,
children, or grandchildren of any such natural person; any trust of which any of
the foregoing is or are the sole beneficiary or beneficiaries; or the estate,
executor, administrator, or legal guardian of any of the foregoing.

      "Termination Event" means, with respect to a Plan which is subject to
Title IV of ERISA, (a) a Reportable Event, (b) the withdrawal of the Borrower or
any other member of the Controlled Group from such Plan during a plan year in
which the Borrower or any other member of the Controlled Group was a
"substantial employer" as defined in Section 4001(a)(2) of ERISA or was deemed
such under Section 4068(f) of ERISA, (c) the termination of such Plan, the
filing of a notice of intent to terminate such Plan or the treatment of an
amendment of such Plan as a termination under Section 4041 of ERISA, (d) the
institution by the PBGC of proceedings to terminate such Plan or (e) any event
or condition which might constitute grounds under Section 4042 of ERISA for the
termination of, or appointment of a trustee to administer, such Plan.

      "Transferee" is defined in Section 13.4.

      "Type" means, with respect to any Revolving Credit Advance, its nature as
an Alternate Base Rate Advance or a Eurodollar Advance.

      "Unfunded Liabilities" means the amount (if any) by which the present
value of all vested and unvested accrued benefits under all Single Employer
Plans exceeds the fair market value of all such Plan assets allocable to such
benefits, all determined as of the then most recent valuation date for such
Plans using PBGC actuarial assumptions for single employer plan terminations.

      "Unmatured Default" means an event which but for the lapse of time or the
giving of notice, or both, would constitute a Default.

      "Wholly-Owned Subsidiary" of a Person means (a) any Subsidiary all of the
outstanding voting securities of which shall at the time be owned or controlled,
directly or indirectly, by such Person or one or more Wholly-Owned Subsidiaries
of such Person, or by such Person and one or more Wholly-Owned Subsidiaries of
such Person, or (b) any partnership, limited liability company, association,
joint venture or similar business organization 100% of the ownership interests
having ordinary voting power of which shall at the time be so owned or
controlled.

      "Year 2000 Issues" means anticipated costs, problems and uncertainties
associated with the inability of certain computer applications to effectively
handle data including dates on and after January 1, 2000, as such inability
affects the business, operations and financial condition of the Borrower and its
Subsidiaries and of the Borrower's and its Subsidiaries' material customers,
suppliers and vendors.


                                      -16-
<PAGE>   27
      "Year 2000 Program" is defined in Section 6.26.

      The foregoing definitions shall be equally applicable to both the singular
and plural forms of the defined terms.


                                   ARTICLE II

                              THE REVOLVING CREDITS

      2.1. Revolving Credit Advances. Subject to the terms of the Existing
Credit Agreement, the lenders party thereto established in favor of the
Borrower, and the Lenders hereby continue, a revolving credit facility pursuant
to which, upon the following terms and subject to the following conditions:

            (a) From and including the date hereof to but excluding the
Revolving Credit Termination Date, each Lender severally (and not jointly)
agrees, on the terms and conditions set forth in this Agreement, to make
Revolving Credit Loans to the Borrower from time to time in amounts not to
exceed in the aggregate at any one time outstanding the amount of its pro-rata
share of the Aggregate Revolving Credit Commitment existing at such time.
Subject to the terms of this Agreement, the Borrower may borrow, repay and
reborrow Revolving Credit Advances at any time prior to the Revolving Credit
Termination Date. The Revolving Credit Commitments shall expire on the Revolving
Credit Termination Date.

            (b) The Borrower hereby agrees that, if at any time as a result of
reductions in the Aggregate Revolving Credit Commitment pursuant to Section
2.4(b), Section 2.7 or otherwise, the aggregate balance of the Revolving Credit
Loans exceeds the Aggregate Revolving Credit Commitment, the Borrower shall
repay immediately its then outstanding Revolving Credit Loans in such amount as
may be necessary to eliminate such excess.

            (c) Any outstanding Revolving Credit Advances and all other unpaid
Obligations with respect to the Revolving Credit Loans shall be paid in full by
the Borrower on the Revolving Credit Termination Date.

            (d) Upon the effectiveness of this Agreement pursuant to Section
5.1, each Revolving Credit Advance which is then outstanding under the Existing
Credit Agreement shall be deemed a Revolving Credit Advance outstanding under
this Agreement.

      2.2. Ratable Loans. Each Revolving Credit Advance hereunder shall consist
of Revolving Credit Loans made from the several Lenders ratably in proportion to
the ratio that their respective Revolving Credit Commitments bear to the
Aggregate Revolving Credit Commitment.

      2.3. Types of Revolving Credit Advances. The Revolving Credit Advances may
be Alternate Base Rate Advances or Eurodollar Advances, or a combination
thereof, selected by the Borrower in accordance with Sections 2.8 and 2.9.


                                      -17-
<PAGE>   28
      2.4. Commitment Fee; Reductions in Aggregate Revolving Credit Commitment.
(a) The Borrower agrees to pay to the Agent for the account of each Lender with
respect to its Revolving Credit Commitment a commitment fee at a per annum rate
equal to the Applicable Commitment Fee Rate on the daily unused portion of such
Lender's Revolving Credit Commitment from the Closing Date to and including the
Revolving Credit Termination Date, payable on each Payment Date hereafter and on
the Revolving Credit Termination Date. All accrued commitment fees shall be
payable on the effective date of any termination of the obligations of the
Lenders to make Revolving Credit Loans hereunder.

            (b) The Borrower may permanently reduce the Aggregate Revolving
Credit Commitment in whole, or in part ratably among the Lenders in integral
multiples of $5,000,000 upon at least five (5) Business Days' written notice to
the Agent, which notice shall specify the amount of any such reduction;
provided, however, that the amount of the Aggregate Revolving Credit Commitment
may not be reduced below the aggregate principal amount of the outstanding
Revolving Credit Advances. Reductions of the Aggregate Revolving Credit
Commitment shall reduce dollar for dollar the mandatory reduction of the
Aggregate Revolving Credit Commitment pursuant to Section 2.7(a) in order of
maturity.

      2.5. Minimum Amount of Each Revolving Credit Advance. Each Eurodollar
Advance shall be in the minimum amount of $2,000,000 (and in multiples of
$500,000 if in excess thereof), and each Alternate Base Rate Advance shall be in
the minimum amount of $2,000,000 (and in multiples of $500,000 if in excess
thereof); provided, however, that any Alternate Base Rate Advance may be in the
amount of the unused Aggregate Revolving Credit Commitment.

      2.6. Optional Principal Payments. The Borrower may from time to time pay,
without penalty or premium, all outstanding Alternate Base Rate Advances, or, in
a minimum aggregate amount of $1,000,000 or any integral multiple of $500,000 in
excess thereof, any portion of the outstanding Alternate Base Rate Advances upon
two Business Days' prior notice to the Agent. The Borrower may from time to time
pay, subject to the payment of any funding indemnification amounts required by
Section 4.4 but without penalty or premium, all outstanding Eurodollar Advances,
or, in a minimum aggregate amount of $1,000,000 or any integral multiple of
$1,000,000 in excess thereof, any portion of the outstanding Eurodollar Advances
upon three Business Days' prior notice to the Agent.

      2.7. Mandatory Revolving Credit Commitment Reductions. (a) The Aggregate
Revolving Credit Commitment shall be automatically and permanently reduced by
the following amounts on the following dates (such reductions to take place
regardless of any prior reductions of the Aggregate Revolving Credit Commitment
pursuant to Section 2.7(b) but to be reduced in order of maturity by the amount
of any prior reductions of the Aggregate Revolving Credit Commitment pursuant to
Section 2.4(b)):


               Date                                           Reduction Amount
               ----                                           ----------------

               January 1, 2000                                $1,000,000
               April 1, 2000                                  $1,000,000


                                      -18-
<PAGE>   29
               July 1, 2000                                   $1,000,000
               October 1, 2000                                $1,000,000
               January 1, 2001                                $1,500,000
               April 1, 2001                                  $1,500,000
               July 1, 2001                                   $1,500,000
               October 1, 2001                                $1,500,000
               January 1, 2002                                $1,500,000
               April 1, 2002                                  $1,500,000
               July 1, 2002                                   $1,500,000
               October 1, 2002                                $1,500,000
               January 1, 2003                                $2,250,000
               April 1, 2003                                  $2,250,000
               July 1, 2003                                   $2,250,000
               Revolving Credit Termination Date              $2,250,000

            (b) The Aggregate Revolving Credit Commitment shall also be
automatically and permanently reduced in the amounts and at the times set forth
below:

            (i) concurrently with the receipt thereof by the Borrower or any
      Subsidiary, 75% of the aggregate Net Available Proceeds in excess of
      $1,000,000 realized upon all Asset Dispositions in any Fiscal Year; and

            (ii) concurrently with the receipt thereof by the Borrower or any
      Subsidiary, 75% of the Net Available Proceeds in excess of $1,000,000
      realized upon the issuance or sale by the Borrower or such Subsidiary of
      any equity or debt securities (other than an issuance or sale of common
      stock of a Subsidiary to the Borrower).

            (c) Contemporaneously with any automatic reductions in the Aggregate
Revolving Credit Commitment pursuant to Section 2.7(b), the Borrower shall
prepay the Revolving Credit Loans in an amount equal to the lesser of (A) the
outstanding principal amount of Revolving Credit Loans and (B) the amount of
such reduction; provided, however, that no such prepayment shall be required if,
at such time, the Borrower could satisfy the conditions set forth in Section 5.2
for the reborrowing thereof. The preceding sentence shall not affect the
obligations of the Borrower under Section 2.1(b).

            (d) Mandatory commitment reductions under this Section 2.7 shall be
cumulative. Any mandatory commitment reductions under Section 2.7(b) shall be
applied to the mandatory commitment reductions required to be made pursuant to
Section 2.7(a) in the inverse order of their maturity.

            (e) Any reduction in the Aggregate Revolving Credit Commitment
pursuant to this Section 2.7 or otherwise shall ratably reduce the Revolving
Credit Commitment of each Lender.


                                      -19-
<PAGE>   30
      2.8. Method of Selecting Types and Interest Periods for New Revolving
Credit Advances. The Borrower shall select the Type of Revolving Credit Advance
and, in the case of each Eurodollar Advance, the Interest Period applicable
thereto from time to time. The Borrower shall give the Agent irrevocable notice
(a "Borrowing Notice") not later than 10:00 a.m. (Chicago time) at least one (1)
Business Day before the Borrowing Date of each Alternate Base Rate Advance and
at least three (3) Business Days before the Borrowing Date for each Eurodollar
Advance, specifying:

            (a) the Borrowing Date of such Revolving Credit Advance, which shall
be a Business Day;

            (b) the aggregate amount of such Revolving Credit Advance;

            (c) the Type of Revolving Credit Advance selected; and

            (d) in the case of each Eurodollar Advance, the Interest Period
applicable thereto, which shall end on or prior to the Revolving Credit
Termination Date.

Not later than noon (Chicago time) on each Borrowing Date, each Lender shall
make available its Revolving Credit Loan or Loans in funds immediately available
in Chicago to the Agent at its address specified pursuant to Article XIV. The
Agent will make the funds so received from the Lenders available to the Borrower
at the Agent's aforesaid address.

      2.9. Conversion and Continuation of Outstanding Revolving Credit Advances.
Alternate Base Rate Advances shall continue as Alternate Base Rate Advances
unless and until such Alternate Base Rate Advances are converted into Eurodollar
Advances pursuant to this Section 2.9 or are repaid in accordance with Section
2.6. Each Eurodollar Advance shall continue as a Eurodollar Advance until the
end of the then applicable Interest Period therefor, at which time such
Eurodollar Advance shall be automatically converted into an Alternate Base Rate
Advance unless (x) such Eurodollar Advance is or was repaid in accordance with
Section 2.6 or (y) the Borrower shall have given the Agent a
Conversion/Continuation Notice (as defined below) requesting that, at the end of
such Interest Period, such Eurodollar Advance continue as a Eurodollar Advance
for the same or another Interest Period. Subject to the terms of Section 2.5,
the Borrower may elect from time to time to convert all or any part of an
Alternate Base Rate Advance into a Eurodollar Advance. The Borrower shall give
the Agent irrevocable notice (a "Conversion/Continuation Notice") of each
conversion of an Alternate Base Rate Advance into a Eurodollar Advance or
continuation of a Eurodollar Advance not later than 10:00 a.m. (Chicago time) at
least three Business Days prior to the date of the requested conversion or
continuation, specifying:

            (a) the requested date, which shall be a Business Day, of such
conversion or continuation,

            (b) the aggregate amount and Type of the Revolving Credit Advance
which is to be converted or continued, and


                                      -20-
<PAGE>   31
            (c) the amount of such Revolving Credit Advance which is to be
converted into or continued as a Eurodollar Advance and the duration of the
Interest Period applicable thereto.

      2.10. Changes in Interest Rate, etc. Each Alternate Base Rate Advance
shall bear interest on the outstanding principal amount thereof, for each day
from and including the date such Revolving Credit Advance is made or is
automatically converted from a Eurodollar Advance into an Alternate Base Rate
Advance pursuant to Section 2.9, to but excluding the date it is paid or is
converted into a Eurodollar Advance pursuant to Section 2.9 hereof, at a rate
per annum equal to the Alternate Base Rate for such day. Changes in the rate of
interest on that portion of any Revolving Credit Advance maintained as an
Alternate Base Rate Advance will take effect simultaneously with each change in
the Alternate Base Rate. Each Eurodollar Advance shall bear interest on the
outstanding principal amount thereof from and including the first day of the
Interest Period applicable thereto to (but not including) the last day of such
Interest Period at the interest rate determined by the Agent as applicable to
such Eurodollar Advance based upon the Borrower's selections under Section 2.8
and 2.9 and otherwise in accordance with the terms hereof. No Interest Period
may end after the Revolving Credit Termination Date.

      2.11. Rates Applicable After Default. Notwithstanding anything to the
contrary contained in Section 2.8 or 2.9, during the continuance of a Default or
Unmatured Default the Required Lenders may, at their option, by notice to the
Borrower (which notice may be revoked at the option of the Required Lenders
notwithstanding any provision of Section 9.2 requiring unanimous consent of the
Lenders to reductions in interest rates), declare that no Revolving Credit
Advance may be made as, converted into or continued as a Eurodollar Advance.
During the continuance of a Default the Required Lenders may, at their option,
by notice to the Borrower (which notice may be revoked at the option of the
Required Lenders notwithstanding any provision of Section 9.2 requiring
unanimous consent of the Lenders to reductions in interest rates), declare that
(a) each Eurodollar Advance shall bear interest for the remainder of the
applicable Interest Period at the rate otherwise applicable to such Interest
Period plus 2% per annum and (b) each Alternate Base Rate Advance shall bear
interest at a rate per annum equal to the Alternate Base Rate in effect from
time to time plus 2% per annum, provided that, during the continuance of a
Default under Section 8.6 or 8.7, the interest rates set forth in clauses (a)
and (b) above shall be applicable to all Revolving Credit Advances without any
election or action on the part of the Agent or any Lender.

      2.12. Method of Payment. All payments of the Obligations hereunder shall
be made, without setoff, deduction, or counterclaim, in immediately available
funds to the Agent at the Agent's address specified pursuant to Article XIV, or
at any other Lending Installation of the Agent specified in writing by the Agent
to the Borrower, by noon (Chicago time) on the date when due and shall be
applied ratably by the Agent among the Lenders. Each payment delivered to the
Agent for the account of any Lender shall be delivered promptly by the Agent to
such Lender in the same type of funds that the Agent received at its address
specified pursuant to Article XIV or at any Lending Installation specified in a
notice received by the Agent from such Lender. The Agent is hereby authorized to
charge the account of the Borrower maintained with First Chicago for each
payment of principal, interest and fees as it becomes due hereunder.


                                      -21-
<PAGE>   32
      2.13. Noteless Agreement; Evidence of Indebtedness. (a) Each Lender shall
maintain in accordance with its usual practice an account or accounts evidencing
the indebtedness of the Borrower to such Lender resulting from each Revolving
Credit Loan made by such Lender from time to time, including the amounts of
principal and interest payable and paid to such Lender from time to time
hereunder.

            (b) The Agent shall also maintain accounts in which it will record
(i) the amount of each Revolving Credit Loan made hereunder, the Type thereof
and the Interest Period with respect thereto, (ii) the amount of any principal
or interest due and payable or to become due and payable from the Borrower to
each Lender hereunder and (iii) the amount of any sum received by the Agent
hereunder from the Borrower and each Lender's share thereof.

            (c) The entries maintained in the accounts maintained pursuant to
paragraphs (a) and (b) above shall be prima facie evidence of the existence and
amounts of the Obligations therein recorded; provided, however, that the failure
of the Agent or any Lender to maintain such accounts or any error therein shall
not in any manner affect the obligation of the Borrower to repay the Obligations
in accordance with their terms.

            (d) Any Lender may request that its Revolving Credit Loans be
evidenced by a promissory note in the form of Exhibit A (a "Revolving Credit
Note"). In such event, the Borrower shall prepare, execute and deliver to such
Lender a Revolving Credit Note payable to the order of such Lender. Thereafter,
the Revolving Credit Loans evidenced by such Revolving Credit Note and interest
thereon shall at all times (including after any assignment pursuant to Section
13.3) be represented by one or more Revolving Credit Notes payable to the order
of the payee named therein or any assignee pursuant to Section 13.3, except to
the extent that any such Lender or assignee subsequently returns any such
Revolving Credit Note for cancellation and requests that such Revolving Credit
Loans once again be evidenced as described in paragraphs (a) and (b) above.

      2.14. Telephonic Notices. The Borrower hereby authorizes the Lenders and
the Agent to extend, convert or continue Revolving Credit Advances, effect
selections of Types of Revolving Credit Advances and to transfer funds based on
telephonic notices made by any person or persons the Agent or any Lender in good
faith believes to be acting on behalf of the Borrower, it being understood that
the foregoing authorization is specifically intended to allow Borrowing Notices
and Conversion/Continuation Notices to be given telephonically. The Borrower
agrees to deliver promptly to the Agent a written confirmation, if such
confirmation is requested by the Agent or any Lender, of each telephonic notice
signed by an Authorized Officer. If the written confirmation differs in any
material respect from the action taken by the Agent and the Lenders, the records
of the Agent and the Lenders shall govern absent manifest error.

      2.15. Interest Payment Dates; Interest and Fee Basis. Interest accrued on
each Alternate Base Rate Advance shall be payable on each Payment Date,
commencing with the first such date to occur after the Closing Date and at
maturity. Interest accrued on each Eurodollar Advance shall be payable on the
last day of its applicable Interest Period, on any date on which the Eurodollar
Advance is prepaid, whether by acceleration or otherwise, and at maturity.
Interest accrued on each Eurodollar Advance having an Interest Period longer
than three months shall also be payable on the 


                                      -22-
<PAGE>   33
last day of each three-month interval during such Interest Period. Interest on
Eurodollar Advances and fees shall be calculated for actual days elapsed on the
basis of a 360-day year, and interest on Alternate Base Rate Advances shall be
calculated for actual days elapsed on the basis of a 365 or 366 day year, as
applicable. Interest shall be payable for the day a Revolving Credit Advance is
made but not for the day of any payment on the amount paid if payment is
received prior to noon (Chicago time) at the place of payment. If any payment of
principal of or interest on a Revolving Credit Advance shall become due on a day
which is not a Business Day, such payment shall be made on the next succeeding
Business Day and, in the case of a principal payment, such extension of time
shall be included in computing interest in connection with such payment.

      2.16. Notification of Revolving Credit Advances, Interest Rates and
Prepayments, Commitment Reductions. Promptly after receipt thereof, the Agent
will notify each Lender of the contents of each Aggregate Revolving Credit
Commitment reduction notice, Borrowing Notice, Conversion/Continuation Notice
and repayment notice received by it hereunder. The Agent will notify each Lender
of the interest rate applicable to each Eurodollar Advance promptly upon
determination of such interest rate and will give each Lender prompt notice of
each change in the Alternate Base Rate.

      2.17. Lending Installations. Each Lender may book its Revolving Credit
Loans at any Lending Installation selected by such Lender and may change its
Lending Installation from time to time. All terms of this Agreement shall apply
to any such Lending Installation and the Revolving Credit Loans and any
Revolving Credit Notes issued hereunder shall be deemed held by each Lender for
the benefit of such Lending Installation. Each Lender may, by written notice to
the Agent and the Borrower in accordance with Article XIV, designate replacement
or additional Lending Installations through which Revolving Credit Loans will be
made by it and for whose account Revolving Credit Loan payments are to be made.

      2.18. Non-Receipt of Funds by the Agent. Unless the Borrower or a Lender,
as the case may be, notifies the Agent prior to the date on which it is
scheduled to make payment to the Agent of (a) in the case of a Lender, the
proceeds of a Revolving Credit Loan or (b) in the case of the Borrower, a
payment of principal, interest or fees to the Agent for the account of the
Lenders, that it does not intend to make such payment, the Agent may assume that
such payment has been made. The Agent may, but shall not be obligated to, make
the amount of such payment available to the intended recipient in reliance upon
such assumption. If such Lender or the Borrower, as the case may be, has not in
fact made such payment to the Agent, the recipient of such payment shall, on
demand by the Agent, repay to the Agent the amount so made available together
with interest thereon in respect of each day during the period commencing on the
date such amount was so made available by the Agent until the date the Agent
recovers such amount at a rate per annum equal to (i) in the case of payment by
a Lender, the Federal Funds Effective Rate for such day for the first three days
and, thereafter, the interest rate applicable to the relevant Revolving Credit
Loan or (ii) in the case of payment by the Borrower, the interest rate
applicable to the relevant Revolving Credit Loan.


                                      -23-
<PAGE>   34
                                   ARTICLE III

                          THE LETTER OF CREDIT FACILITY

      3.1. Issuance of Letters of Credit. (a) From and after the date hereof to
but excluding the Letter of Credit Termination Date, the Issuer agrees, upon the
terms and conditions set forth in this Agreement, to issue at the request and
for the account of the Borrower, one or more Letters of Credit for the account
of the Borrower (x) to support the obligations of NCUL and MUL with respect to
specific syndicates at the Society of Lloyd's and (y) to support other
obligations, provided that the aggregate face amount of all outstanding Letters
of Credit Obligations with respect to this clause (y) does not at any time
exceed the lesser of (A) the Letter of Credit Commitment and (B) $2,000,000;
provided, however, that the Issuer shall not be under any obligation to issue,
and shall not issue, any Letter of Credit if: (i) any order, judgment or decree
of any governmental authority or other regulatory body with jurisdiction over
the Issuer shall purport by its terms to enjoin or restrain such Issuer from
issuing such Letter of Credit, or any law or governmental rule, regulation,
policy, guideline or directive (whether or not having the force of law) from any
governmental authority or other regulatory body with jurisdiction over the
Issuer shall prohibit, or request that the Issuer refrain from, the issuance of
Letters of Credit in particular or shall impose upon the Issuer with respect to
any Letter of Credit any restriction or reserve or capital requirement (for
which the Issuer is not otherwise compensated) or any unreimbursed loss, cost or
expense which was not applicable, in effect and known to the Issuer as of the
date of this Agreement and which the Issuer in good faith deems material to it;
(ii) one or more of the conditions to such issuance contained in Section 5.2 is
not then satisfied; or (iii) after giving effect to such issuance, the aggregate
outstanding amount of the Letter of Credit Obligations would exceed the Letter
of Credit Commitment. Letters of Credit shall be denominated, at the Borrower's
option, in either Dollars or Pounds.

            (b) In no event shall: (i) the aggregate amount of the Letter of
Credit Obligations at any time exceed the Letter of Credit Commitment; or (ii)
the expiration date of any Letter of Credit (other than the Letters of Credit
identified on Schedule 3.1 hereto) or the date for payment of any draft
presented thereunder and accepted by the Issuer, be later than the date five
years after the effective date of such Letter of Credit; provided, that each
Letter of Credit issued with an automatic "evergreen" provision providing for
renewal absent advance notice by the Borrower or the Issuer shall be
automatically renewed unless at least 30 days prior to each anniversary of the
issuance of such Letter of Credit the beneficiary thereof receives notice from
the Issuer that such Letter of Credit shall not be renewed. The Issuer shall be
under no obligation to permit the renewal or extension of any Letter of Credit
at any time (A) when a Default or Unmatured Default has occurred and is
continuing or (B) after the Letter of Credit Termination Date. The Issuer shall
not permit the renewal or extension of any Letter of Credit without the approval
of all of the Lenders.

            (c) The Borrower agrees that, if at any time as a result of
reductions in the Letter of Credit Commitment pursuant to Section 3.3 or
otherwise, the aggregate balance of the Letter of Credit Obligations exceeds the
Letter of Credit Commitment, the Borrower shall cash collateralize the Letter of
Credit Obligations by depositing into the Letter of Credit Cash Collateral
Account cash or Cash Collateral Investments in such amount as may be necessary
to eliminate such excess.


                                      -24-
<PAGE>   35
            (d) The Letters of Credit identified on Schedule 3.1 hereto which
are issued and outstanding under the Existing Credit Agreement shall, upon
satisfaction of the conditions set forth in Article V hereto, automatically and
without further action on the part of the Agent, the Issuer, the Lenders or the
Borrower be deemed Letters of Credit issued under this Agreement.

            (e) For purposes of determining usage and availability under this
Section 3.1, when a Letter of Credit is issued in Pounds, such Pounds will be
converted to Dollars upon issuance, upon the proposed issuance of any other
Letter of Credit and at the end of each calendar quarter, and at any time
thereafter as requested by the Agent or any Lender (including the Issuer) and
such determination shall be made by the Agent in its sole determination based
upon the spot exchange rate between Dollars and Pounds as quoted by the Agent's
foreign exchange desk as of such date of determination. Notwithstanding any
other provisions of this Agreement, if at any time, after giving effect to the
conversion of Pounds into Dollars as set forth above, the aggregate face amount
of all outstanding Letters of Credit is greater than the Letter of Credit
Commitment ("Conversion Differential"), then the Borrower shall prepay the
Revolving Credit Loans to the extent required so that the difference between the
then effective Aggregate Revolving Credit Commitment and the aggregate principal
amount of all outstanding Revolving Credit Loans is equal to or greater than the
Conversion Differential and, in the event the Conversion Differential exceeds
the then effective Aggregate Revolving Credit Commitment, then the Borrower
shall cash collateralize the such Conversion Differential by depositing into the
Letter of Credit Cash Collateral Account cash or Cash Collateral Investments in
an amount equal to such difference.

      3.2. Participating Interests. Immediately upon the issuance by the Issuer
of a Letter of Credit in accordance with Section 3.5 (and with respect to the
Letters of Credit identified on Schedule 3.1 hereto, upon satisfaction of the
conditions set forth in Article V hereof), each Lender shall be deemed to have
irrevocably and unconditionally purchased and received from the Issuer, without
recourse, representation or warranty, an undivided participation interest equal
to its pro-rata share of the Letter of Credit Commitment of the face amount of
such Letter of Credit and each draw paid by the Issuer thereunder. Each Lender's
obligation to pay its proportionate share of all draws under the Letters of
Credit, absent gross negligence or willful misconduct by the Issuer in honoring
any such draw, shall be absolute, unconditional and irrevocable and in each case
shall be made without counterclaim or set-off by such Lender.

      3.3. Reductions in Letter of Credit Commitment. The Borrower may
permanently reduce the Letter of Credit Commitment in whole, or in part ratably
among the Lenders in integral multiples of $2,500,000, upon at least five (5)
Business Days' written notice to the Agent, which notice shall specify the
amount of such reduction; provided, however, that the amount of the Letter of
Credit Commitment may not be reduced below the aggregate amount of the
outstanding Letter of Credit Obligations.

      3.4. Reimbursement Obligations. (a) The Borrower agrees to pay to the
Issuer of a Letter of Credit (i) on each date that any amount is drawn under
each Letter of Credit (or, if any draw is paid by the Issuer after 3:00 p.m.
(Chicago time) on such date, on the next succeeding Business Day) a sum (and
interest on such sum as provided in clause (ii) below) equal to the amount so
drawn plus all other charges and expenses with respect thereto specified in
Section 3.9 or in the applicable 


                                      -25-
<PAGE>   36
Reimbursement Agreement and (ii) interest on any and all amounts remaining
unpaid under this Section 3.4 until payment in full at the rate per annum,
computed for actual days elapsed based on a 365 or 366 day year, as applicable,
equal to (A) the Alternate Base Rate for such day for the first two days
following the due date of any Reimbursement Obligations, and (B) the Alternate
Base Rate for such day plus 2% per annum. The Borrower agrees to pay to the
Issuer the amount of all Reimbursement Obligations owing in respect of any
Letter of Credit immediately when due, under all circumstances, including,
without limitation, any of the following circumstances: (w) any lack of validity
or enforceability of this Agreement or any of the other Facility Documents; (x)
the existence of any claim, set-off, defense or other right which the Borrower
may have at any time against a beneficiary named in a Letter of Credit, any
transferee of any Letter of Credit (or any Person for whom any such transferee
may be acting), any Lender or any 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
Borrower and the beneficiary named in any Letter of Credit); (y) the validity,
sufficiency or genuineness of any document which the Issuer has determined in
good faith complies on its face with the terms of the applicable Letter of
Credit, even if such document should later prove to have been forged,
fraudulent, invalid or insufficient in any respect or any statement therein
shall have been untrue or inaccurate in any respect; or (z) the surrender or
impairment of any security for the performance or observance of any of the terms
hereof.

            (b) Notwithstanding any provisions to the contrary in any
Reimbursement Agreement, the Borrower agrees to reimburse the Issuer for amounts
which the Issuer pays under such Letter of Credit no later than the time
specified in this Agreement. If the Borrower does not pay any such Reimbursement
Obligations when due, the Borrower shall be deemed to have immediately requested
that the Lenders make an Alternate Base Rate Advance under this Agreement in a
principal amount equal to such unreimbursed Reimbursement Obligations. The Agent
shall promptly notify the Lenders of such deemed request and, without the
necessity of compliance with the requirements of Sections 2.5, 3.5 and 5.2, each
Lender shall make available to the Agent its Revolving Credit Loan in the manner
prescribed for Alternate Base Rate Advances. The proceeds of such Revolving
Credit Loans shall be paid over by the Agent to the Issuer for the account of
the Borrower in satisfaction of such unreimbursed Reimbursement Obligations,
which shall thereupon be deemed satisfied by the proceeds of, and replaced by,
such Alternate Base Rate Advance.

            (c) If the Issuer makes a payment on account of any Letter of Credit
and is not concurrently reimbursed therefor by the Borrower and if for any
reason an Alternate Base Rate Advance may not be made pursuant to paragraph (b)
above, then as promptly as practical during normal banking hours on the date of
its receipt of such notice or, if not practicable on such date, not later than
noon (Chicago time) on the Business Day immediately succeeding such date of
notification, each Lender shall deliver to the Agent for the account of the
Issuer, in immediately available funds, the purchase price for such Lender's
interest in such unreimbursed Reimbursement Obligations, which shall be an
amount equal to such Lender's pro-rata share of such payment. Each Lender shall,
upon demand by the Issuer, pay the Issuer interest on such Lender's pro-rata
share of such draw from the date of payment by the Issuer on account of such
Letter of Credit until the date of delivery of such funds to the Issuer by such
Lender at a rate per annum, computed for actual days elapsed based on a 360-day
year, equal to the Federal Funds Effective Rate for such period; provided, that
such


                                      -26-
<PAGE>   37
payments shall be made by the Lenders only in the event and to the extent that
the Issuer is not reimbursed in full by the Borrower for interest on the amount
of any draw on the Letters of Credit.

            (d) At any time after the Issuer has made a payment on account of
any Letter of Credit and has received from any other Lender such Lender's
pro-rata share of such payment, such Issuer shall, forthwith upon its receipt of
any reimbursement (in whole or in part) by the Borrower for such payment, or of
any other amount from the Borrower or any other Person in respect of such
payment (including, without limitation, any payment of interest or penalty fees
and any payment under any collateral account agreement of the Borrower or any
Facility Document but excluding any transfer of funds from any other Lender
pursuant to Section 3.4(b)), transfer to such other Lender such other Lender's
ratable share of such reimbursement or other amount; provided, that interest
shall accrue for the benefit of such Lender from the time such Issuer has made a
payment on account of any Letter of Credit; provided, further, that in the event
that the receipt by the Issuer of such reimbursement or other amount is found to
have been a transfer in fraud of creditors or a preferential payment under the
United States Bankruptcy Code or is otherwise required to be returned, such
Lender shall promptly return to the Issuer any portion thereof previously
transferred by the Issuer to such Lender, but without interest to the extent
that interest is not payable by the Issuer in connection therewith.

            (e) All payments in respect of Reimbursement Obligations shall be in
Dollars at the Issuer's selling rate for cable transfers to the place of payment
of the Letter of Credit current on the date of payment or of the Issuer's
settlement of its obligation, as the Issuer may require or, at the Issuer's
election, in the currency in which the Issuer was required to pay such Letter of
Credit. If, for any cause, on the date of payment or settlement, as the case may
be, there is no selling rate or other rate of exchange generally current in
Chicago for effecting such transfers, the Borrower will pay the Issuer on demand
an amount in Dollars equivalent to the Issuer's actual cost of settlement on its
obligation however or whenever the Issuer shall make such settlement, with
interest at the Alternate Base Rate from the date of settlement to the date of
payment.

      3.5. Procedure for Issuance. Prior to the issuance of each new Letter of
Credit, and as a condition of such issuance, the Borrower shall deliver to the
Issuer (with a copy to the Agent) a Reimbursement Agreement signed by the
Borrower, together with such other documents or items as may be required
pursuant to the terms thereof, and the proposed form and content of such Letter
of Credit shall be reasonably satisfactory to the Issuer. Each Letter of Credit
shall be issued no earlier than two (2) Business Days after delivery of the
foregoing documents, which delivery may be by the Borrower to the Issuer by
telecopy, telex or other electronic means followed by delivery of executed
originals within five (5) days thereafter. The documents so delivered shall be
in compliance with the requirements set forth in Section 3.1(b), and shall
specify therein (a) the stated amount of the Letter of Credit requested, (b) the
effective date of issuance of such requested Letter of Credit, which shall be a
Business Day, (c) the date on which such requested Letter of Credit is to
expire, which shall be no later than five years from the date of issuance of
such Letter of Credit, (d) whether the Letter of Credit is to be denominated in
Dollars or Pounds, and (e) the aggregate amount of Letter of Credit Obligations
which are outstanding and which will be outstanding after giving effect to the
requested Letter of Credit issuance. The delivery of the foregoing documents and
information shall constitute an "Issuance Request" for purposes of this
Agreement. Subject to the terms and conditions of 


                                      -27-
<PAGE>   38
Section 3.1 and provided that the applicable conditions set forth in Section 5.2
hereof have been satisfied, the Issuer shall, on the requested date, issue a
Letter of Credit on behalf of the Borrower in accordance with the Issuer's usual
and customary business practices. In addition, any amendment of an existing
Letter of Credit shall be deemed to be an issuance of a new Letter of Credit and
shall be subject to the requirements set forth above. The Issuer shall give the
Agent prompt written notice of the issuance of any Letter of Credit.

      3.6. Nature of the Lenders' Obligations. (a) As between the Borrower and
the Lenders, the Borrower assumes all risks of the acts and omissions of, or
misuse of the Letters of Credit by, the respective beneficiaries of the Letters
of Credit; provided, however, that the Borrower may have a claim against the
Issuer, and the Issuer may be liable to the Borrower, to the extent, but only to
the extent, of any direct (as opposed to consequential or exemplary) damages
suffered by the Borrower which the Borrower proves were caused by the Issuer's
willful misconduct or gross negligence in determining whether documents
presented under a Letter of Credit comply with the terms of such Letter of
Credit. In furtherance and not in limitation of the foregoing, the Lenders shall
not be responsible for: (i) the form, validity, sufficiency, accuracy,
genuineness or legal effect of any document submitted by any party in connection
with the application for an issuance of a Letter of Credit, even if it should in
fact prove to be in any or all respects invalid, insufficient, inaccurate,
fraudulent or forged; (ii) the validity or sufficiency of any instrument
transferring or assigning or purporting to transfer or assign a Letter of Credit
or the rights or benefits thereunder or proceeds thereof, in whole or in part,
which may prove to be invalid or ineffective for any reason; (iii) the failure
of the beneficiary of a Letter of Credit to comply fully with conditions
required to be satisfied by any Person other than the Issuer in order to draw
upon such Letter of Credit; (iv) errors, omissions, interruptions or delays in
transmission or delivery of any messages, by mail, cable, telegraph, telex or
otherwise; (v) errors in the interpretation of technical terms; (vi) the
misapplication by the beneficiary of a Letter of Credit of the proceeds of any
drawing under such Letter of Credit; or (vii) any consequences arising from
causes beyond control of the Issuer.

            (b) In furtherance and extension and not in limitation of the
specific provisions hereinabove set forth, any action taken or omitted by the
Issuer under or in connection with the Letters of Credit or any related
certificates, if taken or omitted in good faith, shall not put the Agent or any
Lender under any resulting liability to the Borrower or relieve the Borrower of
any of its obligations hereunder to the Issuer or any such Person.

      3.7. Notification of Issuance Requests. Promptly after receipt thereof,
the Agent will notify each Lender of the contents of each Issuance Request
received by it hereunder.

      3.8. Cash Collateral for Letters of Credit. If no Cash Collateral Security
Agreement has been previously entered into, then on the Letter of Credit
Termination Date the Borrower shall enter into the Cash Collateral Security
Agreement and, in any event, on and after such date the Borrower shall pledge
and deliver to the Agent, for the benefit of the Lenders, cash or Cash
Collateral Investments in sufficient amounts to maintain in the Letter of Credit
Cash Collateral Account an amount at least equal to the following percentage of
the Letter of Credit Obligations outstanding from time to time during the
following periods:


                                      -28-
<PAGE>   39
                                                  Percentage of Letter of Credit
      Period                                          Obligations Collateralized
      ------                                          --------------------------

Letter of Credit Termination Date to but not                               20%
   including first anniversary of Letter of Credit
   Termination Date

First anniversary of Letter of Credit                                      40%
  Termination Date to but not including second
   anniversary of Letter of Credit Termination Date

Second anniversary of Letter of Credit                                     60%
  Termination Date to but not including third
   anniversary of Letter of Credit Termination Date

Third anniversary of Letter of Credit                                      80%
  Termination Date to but not including fourth
   anniversary of Letter of Credit Termination Date

Fourth anniversary of Letter of Credit                                    100%
  Termination Date and at all times thereafter

The Letter of Credit Cash Collateral Account shall be maintained by First
Chicago in the name of the Agent for the ratable benefit of the Lenders and the
Agent pursuant to the terms of Article IX; provided, however, that if no Default
has occurred and is continuing, the Borrower may direct the investment of funds
therein in Cash Collateral Investments.

      3.9. Fees.

            (a) Commitment Fee. The Borrower agrees to pay to the Agent for the
account of each Lender with respect to its Letter of Credit Participation Amount
a commitment fee at a rate per annum equal to the Applicable Commitment Fee Rate
on the daily unused portion of such Lender's Letter of Credit Participation
Amount from the Closing Date to and including the Letter of Credit Termination
Date, payable on each Payment Date hereafter and on the Letter of Credit
Termination Date.

            (b) Letter of Credit Fronting Fee. The Borrower hereby agrees to pay
to the Agent, for the account of the Issuer, a letter of credit fronting fee
with respect to each Letter of Credit from and including the date of issuance
thereof (or, with respect to the Letters of Credit identified on Schedule 3.1,
the date on which such Letters of Credit are deemed issued under this Agreement
pursuant to Section 3.1(d)) until the date such Letter of Credit is fully drawn,
canceled or expired, in an amount equal to 0.05% of the aggregate initial face
amount of such Letter of Credit, calculated with respect to actual days elapsed
on the basis of a 360-day year and payable quarterly in arrears on each Payment
Date in each year and upon the expiration, cancellation or utilization in full
of such Letter of Credit. In addition to the foregoing, the Borrower agrees to
pay the Issuer any other fees customarily charged by it in respect of the
issuance, amendment, cancellation, negotiation 


                                      -29-
<PAGE>   40
or transfer of each Letter of Credit and each drawing made thereunder. The
letter of credit fronting fee is in addition to (and not included in) the letter
of credit participation fee provided for in paragraph (c) below.

            (c) Letter of Credit Participation Fee. The Borrower agrees to pay
to the Agent for the pro-rata account of the Lenders (including the Issuer) a
letter of credit participation fee with respect to each Letter of Credit from
and including the date of issuance thereof until the date such Letter of Credit
is fully drawn, canceled or expired, in an amount equal to the Applicable Letter
of Credit Participation Fee Rate on the aggregate amount from time to time
available to be drawn on such Letter of Credit, calculated with respect to
actual days elapsed on the basis of a 360-day year and payable quarterly in
arrears on each Payment Date in each year and upon the expiration, cancellation
or utilization in full of such Letter of Credit. During the continuance of a
Default, the Required Lenders may, at their option, by notice to the Borrower,
declare that the Applicable Letter of Credit Participation Fee Rate shall be
increased by 2% per annum; provided, that during the continuance of a Default
under Section 8.6 or 8.7, the Applicable Letter of Credit Participation Fee Rate
shall be increased by 2% without any election or action on the part of the Agent
or any Lender.

            (d) Extension Fee. The Borrower agrees to pay to the Agent for the
pro-rata account of the Lenders (including the Issuer) an extension fee with
respect to each extension of the Letter of Credit Termination Date pursuant to
Section 3.10 in an aggregate amount equal to 0.05% of the Letter of Credit
Commitment on the date on which such extension becomes effective pursuant to
Section 3.10; provided, that no extension fee shall be payable in connection
with the initial extension (if any) of the Letter of Credit Termination Date.

      3.10. Extension of Letter of Credit Termination Date. The Borrower may
request an extension of the Letter of Credit Termination Date by submitting a
request for an extension to the Agent (an "Extension Request") on any Business
Day that is not less than 30 days prior to each anniversary of the Closing Date.
The Extension Request must specify the new Letter of Credit Termination Date
requested by the Borrower and the date as of which date (which must be at least
30 days after the Extension Request is delivered to the Agent) the Lenders
(including the Issuer) must respond to the Extension Request (the "Response
Date"). The new Letter of Credit Termination Date shall not be more than one
year after the Letter of Credit Termination Date in effect at the time the
Extension Request is received, including the Letter of Credit Termination Date
as one of the days in the calculation of the days elapsed. Promptly upon receipt
of an Extension Request, the Agent shall notify each Lender of the contents
thereof and shall request the Issuer and each Lender to approve the Extension
Request. Each Lender approving the Extension Request shall deliver its written
consent no later than the Response Date. If the consent of all of the Lenders in
their sole discretion and the extension fee, if any, required to be paid by the
Borrower to the Lenders pursuant to Section 3.9(d) are received by the Agent,
the Letter of Credit Termination Date specified in the Extension Request shall
become effective on the existing Letter of Credit Termination Date and the Agent
shall promptly notify the Borrower and each Lender (including the Issuer) of the
new Letter of Credit Termination Date. Otherwise the Letter of Credit
Termination Date shall be unchanged.


                                   ARTICLE IV


                                      -30-
<PAGE>   41
                             YIELD PROTECTION; TAXES

      4.1. Yield Protection. If, on or after the Closing Date, the adoption of
any law or any governmental or quasi-governmental rule, regulation, policy,
guideline or directive (whether or not having the force of law), or any change
in the interpretation or administration thereof by any governmental or
quasi-governmental authority, central bank or comparable agency charged with the
interpretation or administration thereof, or compliance by any Lender or
applicable Lending Installation with any request or directive (whether or not
having the force of law) of any such authority, central bank or comparable
agency:

            (a) subjects any Lender or any applicable Lending Installation to
any Taxes, or changes the basis of taxation of payments (other than with respect
to Excluded Taxes) to any Lender in respect of its Eurodollar Loans or its
interest in the Letters of Credit, or

            (b) imposes or increases or deems applicable any reserve,
assessment, insurance charge, special deposit or similar requirement against
assets of, deposits with or for the account of, or credit extended by, any
Lender or any applicable Lending Installation (other than reserves and
assessments taken into account in determining the interest rate applicable to
Eurodollar Advances), or

            (c) imposes any other condition the result of which is to increase
the cost to any Lender or any applicable Lending Installation of making, funding
or maintaining its Eurodollar Loans or issuing Letters of Credit or reduces any
amount receivable by any Lender or any applicable Lending Installation in
connection with its Eurodollar Loans or any Letter of Credit, or requires any
Lender or any applicable Lending Installation to make any payment calculated by
reference to the amount of Eurodollar Loans held, Letters of Credit issued or
participated in or interest received by it, by an amount deemed material by such
Lender,

and the result of any of the foregoing is to increase the cost to such Lender or
applicable Lending Installation of making or maintaining its Eurodollar Loans or
Revolving Credit Commitment or its interest in the Letters of Credit or to
reduce the return received by such Lender or applicable Lending Installation in
connection with such Eurodollar Loans or Revolving Credit Commitment or interest
in Letters of Credit, then, within 15 days of demand by such Lender, the
Borrower shall pay such Lender such additional amount or amounts as will
compensate such Lender for such increased cost or reduction in amount received.

      4.2. Changes in Capital Adequacy Regulations. If a Lender determines the
amount of capital required or expected to be maintained by such Lender, any
Lending Installation of such Lender or any corporation controlling such Lender
is increased as a result of a Change, then, within 15 days of demand by such
Lender, the Borrower shall pay such Lender the amount necessary to compensate
for any shortfall in the rate of return on the portion of such increased capital
which such Lender determines is attributable to this Agreement, its Revolving
Credit Loans, its Revolving Credit Commitment to make Revolving Credit Loans or
its commitment to participate in Letters of Credit hereunder (after taking into
account such Lender's policies as to capital adequacy). "Change" means 


                                      -31-
<PAGE>   42
(a) any change after the Closing Date in the Risk-Based Capital Guidelines or
(b) any adoption of or change in any other law, governmental or
quasi-governmental rule, regulation, policy, guideline, interpretation, or
directive (whether or not having the force of law) after the Closing Date which
affects the amount of capital required or expected to be maintained by any
Lender or any Lending Installation or any corporation controlling any Lender.
"Risk-Based Capital Guidelines" means (i) the risk-based capital guidelines in
effect in the United States on the Closing Date, including transition rules, and
(ii) the corresponding capital regulations promulgated by regulatory authorities
outside the United States implementing the July 1988 report of the Basle
Committee on Banking Regulation and Supervisory Practices Entitled
"International Convergence of Capital Measurements and Capital Standards,"
including transition rules, and any amendments to such regulations adopted prior
to the Closing Date.

      4.3. Availability of Types of Revolving Credit Advances. If any Lender
determines that maintenance of its Eurodollar Loans at a suitable Lending
Installation would violate any applicable law, rule, regulation, or directive,
whether or not having the force of law, or if the Required Lenders determine
that (i) deposits of a type and maturity appropriate to match fund Eurodollar
Advances are not available or (ii) the interest rate applicable to Eurodollar
Advances does not accurately reflect the cost of making or maintaining
Eurodollar Advances, then the Agent shall suspend the availability of Eurodollar
Advances and require any affected Eurodollar Advances to be repaid or converted
to Alternate Base Rate Advances, subject to the payment of any funding
indemnification amounts required by Section 4.4.

      4.4. Funding Indemnification. If any payment of a Eurodollar Advance
occurs on a date which is not the last day of the applicable Interest Period,
whether because of acceleration, prepayment or otherwise, or a Eurodollar
Advance is not made on the date specified by the Borrower for any reason other
than default by the Lenders, the Borrower will indemnify each Lender for any
loss or cost incurred by it resulting therefrom, including, without limitation,
any loss or cost in liquidating or employing deposits acquired to fund or
maintain such Eurodollar Advance.

      4.5. Taxes. (a) All payments by the Borrower to or for the account of any
Lender or the Agent hereunder or under any Revolving Credit Note shall be made
free and clear of and without deduction for any and all Taxes. If the Borrower
shall be required by law to deduct any Taxes from or in respect of any sum
payable hereunder to any Lender or the Agent, (i) the sum payable shall be
increased as necessary so that after making all required deductions (including
deductions applicable to additional sums payable under this Section 4.5) such
Lender or the Agent (as the case may be) receives an amount equal to the sum it
would have received had no such deductions been made, (ii) the Borrower shall
make such deductions, (iii) the Borrower shall pay the full amount deducted to
the relevant authority in accordance with applicable law and (iv) the Borrower
shall furnish to the Agent the original copy of a receipt evidencing payment
thereof within thirty (30) days after such payment is made.

            (b) In addition, the Borrower hereby agrees to pay any present or
future stamp or documentary taxes and any other excise or property taxes,
charges or similar levies which arise from any payment made hereunder or under
any Revolving Credit Note or from the execution or 


                                      -32-
<PAGE>   43
delivery of, or otherwise with respect to, this Agreement or any Revolving
Credit Note ("Other Taxes").

            (c) The Borrower hereby agrees to indemnify the Agent and each
Lender for the full amount of Taxes or Other Taxes (including, without
limitation, any Taxes or Other Taxes imposed on amounts payable under this
Section 4.5) paid by the Agent or such Lender and any liability (including
penalties, interest and expenses) arising therefrom or with respect thereto.
Payments due under this indemnification shall be made within thirty (30) days of
the date the Agent or such Lender makes demand therefor pursuant to Section 4.6.

            (d) Each Lender that is not incorporated under the laws of the
United States of America or a state thereof (each a "Non-U.S. Lender") agrees
that it will, not less than ten (10) Business Days after the date of this
Agreement, (i) deliver to each of the Borrower and the Agent two duly completed
copies of United States Internal Revenue Service Form 1001 or 4224, certifying
in either case that such Lender is entitled to receive payments under this
Agreement without deduction or withholding of any United States federal income
taxes, and (ii) deliver to each of the Borrower and the Agent a United States
Internal Revenue Form W-8 or W-9, as the case may be, and certify that it is
entitled to an exemption from United States backup withholding tax. Each
Non-U.S. Lender further undertakes to deliver to each of the Borrower and the
Agent (x) renewals or additional copies of such form (or any successor form) on
or before the date that such form expires or becomes obsolete, and (y) after the
occurrence of any event requiring a change in the most recent forms so delivered
by it, such additional forms or amendments thereto as may be reasonably
requested by the Borrower or the Agent. All forms or amendments described in the
preceding sentence shall certify that such Lender is entitled to receive
payments under this Agreement without deduction or withholding of any United
States federal income taxes, unless an event (including without limitation any
change in treaty, law or regulation) has occurred prior to the date on which any
such delivery would otherwise be required which renders all such forms
inapplicable or which would prevent such Lender from duly completing and
delivering any such form or amendment with respect to it and such Lender advises
the Borrower and the Agent that it is not capable of receiving payments without
any deduction or withholding of United States federal income tax.

            (e) For any period during which a Non-U.S. Lender has failed to
provide the Borrower with an appropriate form pursuant to paragraph (d) above
(unless such failure is due to a change in treaty, law or regulation, or any
change in the interpretation or administration thereof by any governmental
authority, occurring subsequent to the date on which a form originally was
required to be provided), such Non-U.S. Lender shall not be entitled to
indemnification under this Section 4.5 with respect to Taxes imposed by the
United States; provided that, should a Non-U.S. Lender which is otherwise exempt
from or subject to a reduced rate of withholding tax become subject to Taxes
because of its failure to deliver a form required under paragraph (d) above, the
Borrower shall take such steps as such Non-U.S. Lender shall reasonably request
to assist such Non-U.S. Lender to recover such Taxes.

            (f) Any Lender that is entitled to an exemption from or reduction of
withholding tax with respect to payments under this Agreement or any Revolving
Credit Note pursuant to the law of any relevant jurisdiction or any treaty shall
deliver to the Borrower (with a copy to the Agent), at 


                                      -33-
<PAGE>   44
the time or times prescribed by applicable law, such properly completed and
executed documentation prescribed by applicable law as will permit such payments
to be made without withholding or at a reduced rate.

            (g) If the U.S. Internal Revenue Service or any other governmental
authority of the United States or any other country or any political subdivision
thereof asserts a claim that the Agent did not properly withhold tax from
amounts paid to or for the account of any Lender (because the appropriate form
was not delivered or properly completed, because such Lender failed to notify
the Agent of a change in circumstances which rendered its exemption from
withholding ineffective, or for any other reason), such Lender shall indemnify
the Agent fully for all amounts paid, directly or indirectly, by the Agent as
tax, withholding therefor, or otherwise, including penalties and interest, and
including taxes imposed by any jurisdiction on amounts payable to the Agent
under this subsection, together with all costs and expenses related thereto
(including attorneys fees and time charges of attorneys for the Agent, which
attorneys may be employees of the Agent). The obligations of the Lenders under
this Section 4.5(g) shall survive the payment of the Obligations and termination
of this Agreement.

      4.6. Lender Statements; Survival of Indemnity. To the extent reasonably
possible, each Lender shall designate an alternate Lending Installation with
respect to its Eurodollar Loans to reduce any liability of the Borrower to such
Lender under Sections 4.1, 4.2 and 4.5 or to avoid the unavailability of
Eurodollar Advances under Section 4.3, so long as such designation is not, in
the judgment of such Lender, disadvantageous to such Lender. Each Lender shall
deliver a written statement of such Lender to the Borrower (with a copy to the
Agent) as to the amount due, if any, under Section 4.1, 4.2, 4.4 or 4.5. Such
written statement shall set forth in reasonable detail the calculations upon
which such Lender determined such amount and shall be final, conclusive and
binding on the Borrower in the absence of manifest error. Determination of
amounts payable under such Sections in connection with a Eurodollar Loan shall
be calculated as though each Lender funded its Eurodollar Loan through the
purchase of a deposit of the type and maturity corresponding to the deposit used
as a reference in determining the Eurodollar Rate applicable to such Revolving
Credit Loan, whether in fact that is the case or not. Unless otherwise provided
herein, the amount specified in the written statement of any Lender shall be
payable on demand after receipt by the Borrower of such written statement. The
obligations of the Borrower under Sections 4.1, 4.2, 4.4 and 4.5 shall survive
payment of the Obligations and termination of this Agreement.


                                    ARTICLE V

                              CONDITIONS PRECEDENT

      5.1. Initial Revolving Credit Loans and Letters of Credit. The amendments
to the Existing Credit Agreement embodied in this Agreement shall not be
effective (in which case the Existing Credit Agreement shall remain in full
force and effect) and the Lenders shall have no obligation to make Revolving
Credit Advances hereunder and the Issuer shall have no obligation to issue any
Letter of Credit hereunder unless and until the Borrower has furnished the
following to the 


                                      -34-
<PAGE>   45
Agent with sufficient copies for the Lenders and the other conditions set forth
below have been satisfied:

            (a) Charter Documents; Good Standing Certificates. Copies of the
articles or certificate of incorporation of the Borrower, together with all
amendments, and a certificate of good standing, each certified by the
appropriate governmental officer in its jurisdiction of incorporation.

            (b) By-Laws and Resolutions. Copies, certified by the Secretary or
Assistant Secretary of the Borrower, of its by-laws and of its Board of
Directors' resolutions and of resolutions or actions of any other body
authorizing the execution of the Facility Documents to which the Borrower is a
party.

            (c) Secretary's Certificate. An incumbency certificate, executed by
the Secretary or Assistant Secretary of the Borrower, which shall identify by
name and title and bear the signature of the officers of the Borrower authorized
to sign the Facility Documents, upon which certificate the Agent and the Lenders
shall be entitled to rely until informed of any change in writing by the
Borrower.

            (d) Officer's Certificate. A certificate, signed by an Authorized
Officer of the Borrower, stating that: (i) on the Restatement Date no Default or
Unmatured Default has occurred and is continuing; and (ii) each of the
representations and warranties set forth in Article VI of this Agreement is true
and correct on and as of the Restatement Date.

            (e) Legal Opinions. A written opinion of LeBoeuf, Lamb, Greene &
MacRae, L.L.P., counsel to the Borrower and its Subsidiaries, addressed to the
Agent and the Lenders in form and substance acceptable to the Agent and its
counsel.

            (f) Revolving Credit Notes. Any Revolving Credit Notes requested by
a Lender pursuant to Section 2.13 payable to the order of each such requesting
Lender.

            (g) Facility Documents. Executed originals of this Agreement and
each of the Facility Documents, which shall be in full force and effect,
together with all schedules, exhibits, certificates, stock certificates
(including stock certificates representing all of the outstanding stock of each
Significant Subsidiary), related stock powers, instruments, opinions and
documents required to be delivered pursuant hereto and thereto.

            (h) Other. Such other documents as the Agent, any Lender or their
counsel may have reasonably requested.

      5.2. Each Revolving Credit Advance and Letter of Credit. The Lenders shall
not be required to make any Revolving Credit Advance (other than a Revolving
Credit Advance that, after giving effect thereto and to the application of the
proceeds thereof, does not increase the aggregate amount of outstanding
Revolving Credit Advances), and the Issuer shall not be obligated to issue any
Letter of Credit, unless on the applicable Borrowing Date:


                                      -35-
<PAGE>   46
            (a) There exists no Default or Unmatured Default and none would
result from such Revolving Credit Advance or issuance of such Letter of Credit;

            (b) The representations and warranties contained in Article VI are
true and correct as of such Borrowing Date except to the extent any such
representation or warranty is stated to relate solely to an earlier date, in
which case such representation or warranty shall have been true and correct on
and as of such earlier date.

            (c) A Borrowing Notice or Issuance Request, as applicable, shall
have been properly submitted; and

            (d) All legal matters incident to the making of such Revolving
Credit Advance or issuance of such Letter of Credit shall be satisfactory to the
Lenders and their counsel.

      Each Borrowing Notice with respect to each such Revolving Credit Advance
and each Issuance Request with respect to each such Letter of Credit shall
constitute a representation and warranty by the Borrower that the conditions
contained in Section 5.2 (a) and (b) have been satisfied. Any Lender may require
a duly completed compliance certificate in substantially the form of Exhibit B
hereto as a condition to making a Revolving Credit Advance or issuing a Letter
of Credit.


                                   ARTICLE VI

                         REPRESENTATIONS AND WARRANTIES

      The Borrower represents and warrants to the Lenders that:

      6.1. Existence and Standing. Each of the Borrower and its Subsidiaries is
a corporation, duly and properly incorporated, validly existing and in good
standing under the laws of its jurisdiction of incorporation or organization and
has all requisite authority to conduct its business in each jurisdiction in
which its business is conducted.

      6.2. Authorization and Validity. The Borrower has the corporate power and
authority and legal right to execute and deliver the Facility Documents and to
perform its obligations thereunder. The execution and delivery by the Borrower
of the Facility Documents and the performance of its obligations thereunder have
been duly authorized by proper corporate proceedings, and the Facility Documents
to which the Borrower is a party constitute legal, valid and binding obligations
of the Borrower enforceable against the Borrower in accordance with their terms,
except as enforceability may be limited by bankruptcy, insolvency or similar
laws affecting the enforcement of creditors' rights generally.

      6.3. No Conflict; Government Consent. Neither the execution and delivery
by the Borrower of the Facility Documents, nor the consummation of the
transactions therein contemplated, nor compliance with the provisions thereof
will violate (a) any law, rule, regulation, order, writ, judgment, injunction,
decree or award binding on the Borrower or any of its Subsidiaries or (b) the
Borrower's or any Subsidiary's articles or certificate of incorporation,
partnership agreement, 


                                      -36-
<PAGE>   47
certificate of partnership, articles or certificate of organization, by-laws, or
operating or other management agreement, as the case may be, or (c) the
provisions of any indenture, instrument or agreement to which the Borrower or
any of its Subsidiaries is a party or is subject, or by which it, or its
Property, is bound, or conflict with or constitute a default thereunder, or
result in, or require, the creation or imposition of any Lien in, of or on the
Property of the Borrower or a Subsidiary pursuant to the terms of any such
indenture, instrument or agreement. No order, consent, adjudication, approval,
license, authorization, or validation of, or filing, recording or registration
with, or exemption by, or other action in respect of any governmental or public
body or authority, or any subdivision thereof, which has not been obtained by
the Borrower or any of its Subsidiaries, is required to be obtained by the
Borrower or any of its Subsidiaries in connection with the execution and
delivery of the Facility Documents, the extensions of credit under this
Agreement, the payment and performance by the Borrower of the Obligations or the
legality, validity, binding effect or enforceability of any of the Facility
Documents, except that approval of the New York Insurance Department, the
California Insurance Department and/or one or more other state insurance
departments would be required in order for the Lenders to acquire control of
Navigators and NIC. Neither the Borrower nor any Subsidiary is in default under
or in violation of any foreign, federal, state or local law, rule, regulation,
order, writ, judgment, injunction, decree or award binding upon or applicable to
the Borrower or such Subsidiary, in each case the consequences of which default
or violation could reasonably be expected to have a Material Adverse Effect.

      6.4. Financial Statements. (a) The consolidated balance sheets of the
Borrower and the Consolidated Subsidiaries as of December 31, 1997, the related
consolidated statements of income, consolidated statements of stockholders'
equity, and consolidated statements of cash flows of the Borrower and such
Consolidated Subsidiaries for the Fiscal Year then ended, and the accompanying
footnotes, together, with the opinion thereon, dated March 16, 1998 of KPMG Peat
Marwick, independent certified public accountants, copies of which have been
furnished to the Lenders, fairly present the financial condition of the Borrower
and the Consolidated Subsidiaries as at such dates and the results of the
operations of the Borrower and Consolidated Subsidiaries for the periods covered
by such statements, all in accordance with Agreement Accounting Principles
consistently applied.

            (b) The consolidated balance sheets of the Borrower and the
Consolidated Subsidiaries as of June 30, 1998 and the related consolidated
statements of income, consolidated statements of stockholders' equity, and
consolidated statements of cash flows of the Borrower and such Consolidated
Subsidiaries for the Fiscal Quarter then ended, copies of which have been
furnished to the Lenders, fairly present the financial condition of the Borrower
and the Consolidated Subsidiaries as at such dates and the results of the
operations of the Borrower and the Consolidated Subsidiaries for the periods
covered by such statements, all in accordance with Agreement Accounting
Principles consistently applied (subject to changes resulting from normal
year-end audit adjustments).

            (c) There are no liabilities of the Borrower or any of the
Consolidated Subsidiaries, fixed or contingent, which are material but are not
reflected in the most recent financial statements referred to above or in the
notes thereto, other than liabilities arising in the ordinary course of business
since June 30, 1998.


                                      -37-
<PAGE>   48
      6.5. Statutory Financial Statements. (a) The Annual Statement of each of
the Insurance Subsidiaries (including, without limitation, the provisions made
therein for investments and the valuation thereof, reserves, policy and contract
claims and statutory liabilities) as filed with the appropriate Governmental
Authority of its state of domicile (the "Department") and delivered to each
Lender prior to the execution and delivery of this Agreement, as of and for the
1995, 1996 and 1997 Fiscal Years, and as of and for the Fiscal Quarter ended
June 30, 1998 (collectively, the "Statutory Financial Statements"), have been
prepared in accordance with SAP applied on a consistent basis (except as noted
therein). Each such Statutory Financial Statement was in compliance with
applicable law when filed.

            (b) No dividends or other distributions have been declared, paid or
made upon any shares of capital stock of the Borrower, nor have any shares of
capital stock of the Borrower been redeemed, retired, purchased or otherwise
acquired by the Borrower since June 30, 1998, except to the extent permitted
under the terms of this Agreement.

      6.6. Material Adverse Change. Since June 30, 1998 there has been no change
in the business, Property, condition (financial or otherwise) or results of
operations of the Borrower and its Subsidiaries which could reasonably be
expected to have a Material Adverse Effect.

      6.7. Taxes. The Borrower and its Subsidiaries have filed all United States
federal tax returns and all other tax returns which are required to be filed and
have paid all taxes due pursuant to said returns or pursuant to any assessment
received by the Borrower or any of its Subsidiaries, except such taxes, if any,
as are being contested in good faith and as to which adequate reserves have been
provided in accordance with Agreement Accounting Principles and as to which no
Lien exists. The United States income tax returns of the Borrower and its
Subsidiaries are being audited by the Internal Revenue Service for the Fiscal
Years 1991, 1992, 1993 and 1994. No tax liens have been filed and no claims are
being asserted with respect to any such taxes. The charges, accruals and
reserves on the books of the Borrower and its Subsidiaries in respect of any
taxes or other governmental charges are adequate.

      6.8. Litigation and Contingent Obligations. There is no litigation,
arbitration, governmental investigation, proceeding or inquiry pending or, to
the knowledge of any of their officers, threatened against or affecting the
Borrower or any of its Subsidiaries which could reasonably be expected to have a
Material Adverse Effect or which seeks to prevent, enjoin or delay the making of
any Revolving Credit Loans or the issuance of any Letters of Credit. Other than
any liability incident to any litigation, arbitration or proceeding which could
not reasonably be expected to have a Material Adverse Effect, the Borrower has
no material contingent obligations not provided for or disclosed in the
financial statements referred to in Section 6.4.

      6.9. Subsidiaries. Schedule 6.9 contains an accurate list of all
Subsidiaries of the Borrower as of the date of this Agreement, setting forth
their respective jurisdictions of organization and the percentage of their
respective capital stock or other ownership interests owned by the Borrower or
other Subsidiaries and indicating which Subsidiaries are Significant
Subsidiaries. All of the issued and outstanding shares of capital stock or other
ownership interests of such Subsidiaries 


                                      -38-
<PAGE>   49
have been (to the extent such concepts are relevant with respect to such
ownership interests) duly authorized and issued and are fully paid and
non-assessable.

      6.10. ERISA. The Unfunded Liabilities of all Single Employer Plans is $0.
Neither the Borrower nor any other member of the Controlled Group has incurred,
or is reasonably expected to incur, any withdrawal liability to any
Multiemployer Plan. Each Plan complies in all material respects with all
applicable requirements of law and regulations, no Reportable Event has occurred
with respect to any Plan, neither the Borrower nor any other member of the
Controlled Group has withdrawn from any Plan or initiated steps to do so, and no
steps have been taken to reorganize or terminate any Plan.

      6.11. Defaults. No Default or Unmatured Default has occurred and is
continuing.

      6.12. Accuracy of Information. No information, exhibit or report furnished
by the Borrower or any of its Subsidiaries to the Agent or to any Lender in
connection with the negotiation of, or compliance with, the Facility Documents
contained any material misstatement of fact or omitted to state a material fact
or any fact necessary to make the statements contained therein not misleading.

      6.13. Regulation U. Margin stock (as defined in Regulation U) constitutes
less than 25% of the value of those assets of the Borrower and its Subsidiaries
which are subject to any limitation on sale, pledge, or other restriction
hereunder. Neither the making of any Revolving Credit Advance nor issuance of
any Letters of Credit hereunder nor the use of the proceeds thereof, will
violate or be inconsistent with the provisions of Regulation T, Regulation U or
Regulation X.

      6.14. Material Agreements. Neither the Borrower nor any Subsidiary is a
party to any agreement or instrument or subject to any charter or other
corporate restriction which could reasonably be expected to have a Material
Adverse Effect. Neither the Borrower nor any Subsidiary is in default in the
performance, observance or fulfillment of any of the obligations, covenants or
conditions contained in (a) any agreement to which it is a party which default
could reasonably be expected to have a Material Adverse Effect or (b) any
agreement or instrument evidencing or governing Indebtedness.

      6.15. Compliance With Laws. The Borrower and its Subsidiaries have
complied with all applicable statutes, rules, regulations, orders and
restrictions of any domestic or foreign government or any instrumentality or
agency thereof having jurisdiction over the conduct of their respective
businesses or the ownership of their respective Property, except where the
failure to comply could not reasonably be expected to have a Material Adverse
Effect.

      6.16. Ownership of Properties. The Borrower and each of its Subsidiaries
has good title, free of all Liens other than those permitted by Section 7.16, to
all of the Property and assets reflected in the Borrower's most recent
consolidated financial statements provided to the Agent as owned by the Borrower
and its Subsidiaries.

      6.17. Plan Assets; Prohibited Transactions. The Borrower is not an entity
deemed to hold "plan assets" within the meaning of 29 C.F.R. Section 2510.3-101
of an employee benefit plan (as defined in Section 3(3) of ERISA) which is
subject to Title I of ERISA or any plan (within the meaning of 


                                      -39-
<PAGE>   50
Section 4975 of the Code), and neither the execution of this Agreement nor the
making of Revolving Credit Loans nor the issuance of Letters of Credit hereunder
gives rise to a prohibited transaction within the meaning of Section 406 of
ERISA or Section 4975 of the Code.

      6.18. Environmental Matters. In the ordinary course of its business, the
officers of the Borrower consider the effect of Environmental Laws on the
business of the Borrower and its Subsidiaries, in the course of which they
identify and evaluate potential risks and liabilities accruing to the Borrower
due to Environmental Laws. On the basis of this consideration, the Borrower has
concluded that Environmental Laws cannot reasonably be expected to have a
Material Adverse Effect. Neither the Borrower nor any Subsidiary has received
any notice to the effect that its operations are not in material compliance with
any of the requirements of applicable Environmental Laws or are the subject of
any federal or state investigation evaluating whether any remedial action is
needed to respond to a release of any toxic or hazardous waste or substance into
the environment, which non-compliance or remedial action could reasonably be
expected to have a Material Adverse Effect.

      6.19. Investment Company Act. Neither the Borrower nor any Subsidiary is
an "investment company" or a company "controlled" by an "investment company",
within the meaning of the Investment Company Act of 1940, as amended.

      6.20. Public Utility Holding Company Act. Neither the Borrower nor any
Subsidiary is a "holding company" or a "subsidiary company" of a "holding
company", or an "affiliate" of a "holding company" or of a "subsidiary company"
of a "holding company", within the meaning of the Public Utility Holding Company
Act of 1935, as amended.

      6.21. Solvency. Immediately after the consummation of the transactions to
occur on the date hereof and immediately following each extension of credit, if
any, made hereunder on the date hereof and after giving effect to the
application of the proceeds of such extensions of credit, (a) the fair value of
the assets of the Borrower and its Subsidiaries on a consolidated basis, at a
fair valuation, will exceed the debts and liabilities, subordinated, contingent
or otherwise, of the Borrower and its Subsidiaries on a consolidated basis; (b)
the present fair saleable value of the Property of the Borrower and its
Subsidiaries on a consolidated basis will be greater than the amount that will
be required to pay the probable liability of the Borrower and its Subsidiaries
on a consolidated basis on their debts and other liabilities, subordinated,
contingent or otherwise, as such debts and other liabilities become absolute and
matured; (c) the Borrower and its Subsidiaries on a consolidated basis will be
able to pay their debts and liabilities, subordinated, contingent or otherwise,
as such debts and liabilities become absolute and matured; and (d) the Borrower
and its Subsidiaries on a consolidated basis will not have unreasonably small
capital with which to conduct the businesses in which they are engaged as such
businesses are now conducted and are proposed to be conducted after the date
hereof.

      6.22. Insurance Licenses. Schedule 6.22 hereto lists all of the
jurisdictions in which any Insurance Subsidiary holds a License and is
authorized to transact insurance business as of the date of this Agreement. No
such License, the loss of which could reasonably be expected to have a Material
Adverse Effect, is the subject of a proceeding for suspension, limitation or
revocation. To 


                                      -40-
<PAGE>   51
the Borrower's knowledge, there is not a sustainable basis for such suspension,
limitation or revocation, and no such suspension, limitation or revocation has
been threatened by any Governmental Authority. Schedule 6.22 also indicates the
line or lines of insurance in which each such Insurance Subsidiary is engaged
and the state or states in which such Insurance Subsidiary is licensed to engage
in any line of insurance, in each case as of the date of this Agreement. The
Insurance Subsidiaries do not transact any business, directly or indirectly,
requiring any license, permit, governmental approval, consent or other
authorization other than those listed on Schedule 6.22.

      6.23. Partnerships. Except as disclosed in Schedule 6.23, neither the
Borrower nor any of its Subsidiaries is a partner of any partnership.

      6.24. Lines of Business. Schedule 6.24 sets forth a complete statement of
each line of business conducted as of the date hereof by the Borrower and each
of its Subsidiaries (the "Existing Lines of Business").

      6.25. Reinsurance Practices. The business of each Insurance Subsidiary is
being conducted in all material respects in accordance with the Reinsurance
Guidelines.

      6.26. Year 2000. The Borrower has made a full and complete assessment of
the Year 2000 Issues and has a realistic and achievable program for remediating
the Year 2000 Issues on a timely basis (the "Year 2000 Program"). Based on such
assessment and on the Year 2000 Program, the Borrower does not reasonably
anticipate that Year 2000 Issues will have a Material Adverse Effect.

      6.27. Security. The Pledge Agreement is effective to create and give the
Agent, for the benefit of the Lenders, as security for the repayment of the
obligations secured thereby, a legal, valid, perfected and enforceable first
priority Lien upon and security interest in the capital stock pledged thereby.

      6.28. Disclosure. None of the (a) information, exhibits or reports
furnished or to be furnished by the Borrower or any Subsidiary to the Agent or
to any Lender in connection with the negotiation of the Facility Documents, or
(b) representations or warranties of the Borrower or any Subsidiary contained in
this Agreement, the other Facility Documents or any other document, certificate
or written statement furnished to the Agent or the Lenders by or on behalf of
the Borrower or any Subsidiary for use in connection with the transactions
contemplated by this Agreement or the Facility Documents contained, contains or
will contain any untrue statement of a material fact or omitted, omits or will
omit to state a material fact necessary in order to make the statements
contained herein or therein not misleading in light of the circumstances in
which the same were made. There is no fact known to the Borrower (other than
matters of a general economic nature) that has had or could reasonably be
expected to have a Material Adverse Effect and that has not been disclosed
herein or in such other documents, certificates and statements furnished to the
Lenders for use in connection with the transactions contemplated by this
Agreement.


                                      -41-
<PAGE>   52


                                   ARTICLE VII

                                    COVENANTS

      During the term of this Agreement, unless the Lenders shall otherwise
consent in writing:

      7.1. Financial Reporting. The Borrower will maintain, for itself and each
Subsidiary, a system of accounting established and administered in accordance
with generally accepted accounting principles, consistently applied, and will
furnish to the Lenders:

            (a) As soon as practicable and in any event within one hundred (100)
days after the close of each of its Fiscal Years, an unqualified audit report
certified by independent certified public accountants acceptable to the Required
Lenders, prepared in accordance with Agreement Accounting Principles on a
consolidated and consolidating basis and setting forth in comparative form
figures for the preceding Fiscal Year for itself and its Consolidated
Subsidiaries and on a stand alone basis for the Borrower, including balance
sheets as of the end of such period and related statements of income,
stockholders' equity and cash flows accompanied by (i) any management letter
prepared by said accountants, and (ii) a certificate of said accountants that,
in the course of the examination necessary for their certification of the
foregoing, they have obtained no knowledge of any Default or Unmatured Default,
or if, in the opinion of such accountants, any Default or Unmatured Default
shall exist, stating the nature and status thereof.

            (b) As soon as practicable and in any event within fifty (50) days
after the close of the first three Fiscal Quarters of each of its Fiscal Years,
for itself and its Subsidiaries, consolidated and consolidating unaudited
balance sheets as at the close of each such period and consolidated and
consolidating statement of income, stockholders' equity and cash flows for the
period from the beginning of such Fiscal Year to the end of such quarter setting
forth in each case in comparative form figures for the corresponding period in
the prior Fiscal Year, all prepared in accordance with Agreement Accounting
Principles and in reasonable detail, and all certified by its chief financial
officer.

            (c) As soon as available and in any event (i) within sixty (60) days
after the close of each Fiscal Year of each Insurance Subsidiary, the Annual
Statement of such Insurance Subsidiary for such Fiscal Year as filed with the
insurance commissioner (or similar authority) in such Insurance Subsidiary's
state of domicile, together with (ii) within sixty (60) days after the close of
each Fiscal Year of each Insurance Subsidiary, the opinion thereof of the chief
financial officer of the Borrower stating that such Annual Statement presents
the financial condition and results of operations of such Insurance Subsidiary
in accordance with SAP, (iii) on or prior to each June 1 after the close of each
Fiscal Year of each Insurance Subsidiary, the opinion of a firm of certified
public accountants reasonably satisfactory to the Required Lenders, who shall
have examined such Annual Statement and whose opinion shall not be qualified as
to the scope of audit or as to the status of such Insurance Subsidiary as a
going concern, and (iv) within one hundred twenty (120) days after the close of
each Fiscal Year of each Insurance Subsidiary, a written review of and favorable
opinion of KPMG Peat Marwick or another firm of certified public accountants
reasonably satisfactory to the Required Lenders on the methodology and
assumptions used to calculate the Loss Reserves of such Insurance


                                      -42-
<PAGE>   53
Subsidiary at the end of such Fiscal Year (as shown on the Annual Statement of
such Insurance Subsidiary prepared in accordance with SAP).

            (d) As soon as available and in any event on or prior to each May 1
after the close of each Fiscal Year of the Insurance Subsidiaries, the
Consolidated Annual Statement of the Insurance Subsidiaries for such Fiscal
Year, prepared in accordance with SAP and filed with the New York Insurance
Department.

            (e) As soon as available and in any event within fifty (50) days
after the close of each of the first three Fiscal Quarters in each Fiscal Year
of each Insurance Subsidiary, quarterly financial statements of such Insurance
Subsidiary (prepared in accordance with SAP) for such Fiscal Quarter and as
filed with the insurance commissioner (or similar authority) in such Insurance
Subsidiary's state of domicile, together with the opinion thereon of the chief
financial officer of the Borrower stating that such financial statements present
the financial condition and results of operations of such Insurance Subsidiary
in accordance with SAP.

            (f) As soon as available, but in any event within 120 days after the
beginning of each Fiscal Year, a copy of the plan and forecast of the Borrower
and its Subsidiaries for such Fiscal Year in the form customarily prepared by
the Borrower.

            (g) Together with the financial statements required by clauses (a)
and (b) above, a compliance certificate in substantially the form of Exhibit B
hereto signed by its chief financial officer showing the calculations necessary
to determine compliance with this Agreement and stating that no Default or
Unmatured Default exists, or if any Default or Unmatured Default exists, stating
the nature and status thereof.

            (h) As soon as possible and in any event within 10 days after the
Borrower knows that any Termination Event has occurred with respect to any Plan,
a statement, signed by the chief financial officer of the Borrower, describing
said Termination Event and the action which the Borrower proposes to take with
respect thereto.

            (i) As soon as possible and in any event within 10 days after
receipt by the Borrower, a copy of (i) any notice or claim to the effect that
the Borrower or any of its Subsidiaries is or may be liable to any Person as a
result of the release by the Borrower, any of its Subsidiaries, or any other
Person of any toxic or hazardous waste or substance into the environment, and
(ii) any notice alleging any violation of any federal, state or local
environmental, health or safety law or regulation by the Borrower or any of its
Subsidiaries.

            (j) As soon as possible and in any event within 10 days after the
Borrower learns thereof, notice of the assertion or commencement of any claims,
action, suit or proceeding against or affecting the Borrower or any Subsidiary
which may reasonably be expected to have a Material Adverse Effect.

            (k) Promptly upon the furnishing thereof to the shareholders of the
Borrower, copies of all financial statements, reports and proxy statements so
furnished.


                                      -43-
<PAGE>   54
            (l) Promptly upon the filing thereof, copies of all registration
statements and annual, quarterly, monthly or other regular reports which the
Borrower or any of its Subsidiaries files with the Securities and Exchange
Commission.

            (m) Promptly and in any event within ten (10) days after learning
thereof, notification of (i) any tax assessment, demand, notice of proposed
deficiency or notice of deficiency received by the Borrower or any Consolidated
Person or (ii) the filing of any tax Lien or commencement of any judicial
proceeding by or against any such Consolidated Person, if any such assessment,
demand, notice, Lien or judicial proceeding relates to tax liabilities in excess
of $500,000.

            (n) Promptly, and in any event within five days after (i) learning
thereof, notification of any changes after the date hereof in the Borrower's S&P
Financial Strength Rating or in the rating given by A.M. Best & Co. in respect
of any Insurance Subsidiary and (ii) receipt thereof, copies of any ratings
analysis by A.M. Best & Co. relating to any Insurance Subsidiary.

            (o) Copies of any actuarial certificates prepared with respect to
any Insurance Subsidiary, promptly after the receipt thereof, and not later than
90 days after each Fiscal Year, an actuarial opinion with respect to each
Insurance Subsidiary in form and substance reasonably satisfactory to the Agent
and the Required Lenders from KPMG or any other independent actuarial firm
reasonably satisfactory to the Agent and the Required Lenders.

            (p) Promptly upon the filing thereof, copies of all filings and
annual, quarterly, monthly or other regular reports which the Borrower or any of
its Subsidiaries files with the NAIC or any insurance commission or department
or analogous Governmental Authority (including, without limitation, any filing
made by the Borrower or any Subsidiary pursuant to any insurance holding company
act or related rules or regulations), but excluding routine or non-material
filings with the NAIC, any insurance commissioner or department or analogous
Governmental Authority.

            (q) In addition to the requirements of clause (c)(iv) above, as
promptly as reasonably practicable following the request of the Required
Lenders, a report prepared by an independent actuarial consulting firm
reasonably acceptable to the Required Lenders reviewing the adequacy of Loss
Reserves of each Insurance Subsidiary, which firm shall be provided access to or
copies of all reserve analyses and valuations relating to the insurance business
of each Insurance Subsidiary in the possession of or available to the Borrower
or its Subsidiaries; provided, that, in the event that the written review
required to be provided to the Lenders in respect of any Fiscal Year pursuant to
clause (c)(iv) above is provided by an independent actuarial consulting firm
reasonably satisfactory to the Agent, or a written review of an independent
actuarial consulting firm reasonably satisfactory to the Agent satisfying the
requirements set forth in clause (c)(iv) is otherwise delivered to the Lenders
at any time other than pursuant to such clause, then the Required Lenders may
not request a report pursuant to this paragraph (q) until one year after the
delivery date of such report unless, at the time of such request, a Default is
in existence.

            (r) Such other information as the Agent or any Lender may from time
to time reasonably request.


                                      -44-
<PAGE>   55
      7.2. Use of Proceeds. The Borrower will, and will cause each Subsidiary
to, use the proceeds of the Revolving Credit Advances for general corporate
purposes of the Borrower and its Subsidiaries and to refinance existing
indebtedness under the Existing Credit Agreement. The Borrower will not, nor
will it permit any Subsidiary to, use any of the proceeds of the Revolving
Credit Advances to purchase or carry any "margin stock" (as defined in
Regulation U).

      7.3. Notice of Default. The Borrower will give prompt notice in writing to
the Lenders of the occurrence of (a) any Default or Unmatured Default, (b) of
any other event or development, financial or otherwise (including, without
limitation, developments with respect to Year 2000 Issues) which could
reasonably be expected to have a Material Adverse Effect, (c) the receipt of any
notice from any Governmental Authority of the expiration without renewal,
revocation or suspension of, or the institution of any proceedings to revoke or
suspend, any License now or hereafter held by any Insurance Subsidiary which is
required to conduct insurance business in compliance with all applicable laws
and regulations and the expiration, revocation or suspension of which could
reasonably be expected to have a Material Adverse Effect, (d) the receipt of any
notice from any Governmental Authority of the institution of any disciplinary
proceedings against or in respect of any Insurance Subsidiary, or the issuance
of any order, the taking of any action or any request for an extraordinary audit
for cause by any Governmental Authority which, if adversely determined, could
reasonably be expected to have a Material Adverse Effect, (e) any material
judicial or administrative order limiting or controlling the business of any
Subsidiary (and not the industry in which such Subsidiary is engaged generally)
which has been issued or adopted, or (f) the commencement of any litigation
which could reasonably be expected to result in a Material Adverse Effect.

      7.4. Conduct of Business. The Borrower will, and will cause each
Subsidiary to, (a) carry on and conduct its business only in the Existing Lines
of Business or in other lines of the insurance business or in activities
reasonably incidental to the insurance business, (b) do all things necessary to
remain duly incorporated or organized, validly existing and (to the extent such
concept applies to such entity) in good standing in its jurisdiction of
incorporation and its jurisdiction of incorporation or organization, as the case
may be, and maintain all requisite authority to conduct its business in each
other jurisdiction in which such qualification is required, and (c) do all
things necessary to renew, extend and continue in effect all Licenses which may
at any time and from time to time be necessary for any Insurance Subsidiary to
operate its business in compliance with all applicable laws and regulations. No
Insurance Subsidiary shall change its state of domicile or incorporation without
the prior written consent of the Required Lenders.

      7.5. Taxes. The Borrower will, and will cause each Subsidiary to, timely
file complete and correct United States federal and applicable foreign, state
and local tax returns required by applicable law and pay when due all taxes,
assessments and governmental charges and levies upon it or its income, profits
or Property, except those which are being contested in good faith by appropriate
proceedings and with respect to which adequate reserves have been set aside in
accordance with Agreement Accounting Principles and SAP, as applicable.

      7.6. Insurance. The Borrower will, and will cause each Subsidiary to,
maintain with financially sound and reputable insurance companies insurance on
all their Property in such amounts


                                      -45-
<PAGE>   56
and covering such risks as is consistent with sound business practice, and the
Borrower will furnish to the Agent and any Lender upon request full information
as to the insurance carried.

      7.7. Compliance with Laws. The Borrower will, and will cause each
Subsidiary to, comply with all laws, rules, regulations, orders, writs,
judgments, injunctions, decrees or awards to which it may be subject, including,
without limitation, all Environmental Laws, the noncompliance with which could
reasonably be expected to have a Material Adverse Effect.

      7.8. Maintenance of Properties. The Borrower will, and will cause each
Subsidiary to, do all things necessary to maintain, preserve, protect and keep
its Property in good repair, working order and condition, and make all necessary
and proper repairs, renewals and replacements so that its business carried on in
connection therewith may be properly conducted at all times.

      7.9. Inspection; Maintenance of Books and Records. The Borrower will, and
will cause each Subsidiary to, permit the Agent and the Lenders, by their
respective representatives and agents, to inspect any of the Property, books and
financial records of the Borrower and each Subsidiary, to examine and make
copies of the books of accounts and other financial records of the Borrower and
each Subsidiary, and to discuss the affairs, finances and accounts of the
Borrower and each Subsidiary with, and to be advised as to the same by, their
respective officers at such reasonable times and intervals as the Agent or any
Lender may designate. The Borrower will keep or cause to be kept, and cause each
Subsidiary to keep or cause to be kept, appropriate records and books of account
in which complete entries are to be made reflecting its and their business and
financial transactions, such entries to be made in accordance with Agreement
Accounting Principles and SAP, as applicable, consistently applied.

      7.10. Dividends and Stock Repurchases. The Borrower will not, nor will it
permit any Subsidiary to, declare or pay any dividends or make any distributions
on its capital stock (other than dividends payable in its own capital stock) or
redeem, repurchase or otherwise acquire or retire any of its capital stock or
any options or other rights in respect thereof at any time outstanding, except
that (a) any Subsidiary may declare and pay dividends or make distributions to
the Borrower or to a Wholly-Owned Subsidiary of the Borrower and (b) the
Borrower may repurchase capital stock in an aggregate amount not to exceed
$3,000,000 in any Fiscal Year.

      7.11. Indebtedness. The Borrower will not, nor will it permit any
Subsidiary to, create, incur or suffer to exist any Indebtedness, except:

            (a) the Revolving Credit Loans and other Obligations;

            (b) guaranties permitted under Section 7.15;

            (c) Indebtedness of the Borrower under the Note dated December 15,
1994 in the aggregate principal amount of $536,697 owed to Terence N. Deeks; and

            (d) on and prior to December 31, 1998, bank Indebtedness of Mander,
Thomas & Cooper (Underwriting Agencies) Ltd. in the aggregate principal amount
of pound sterling 200,000.


                                      -46-
<PAGE>   57
      7.12. Merger. The Borrower will not, nor will it permit any Subsidiary to,
merge or consolidate with or into any other Person, except that a Subsidiary may
merge into the Borrower or any Wholly-Owned Subsidiary.

      7.13. Sale of Assets. The Borrower will not, nor will it permit any
Subsidiary to, lease, sell, transfer or otherwise dispose of its Property, to
any other Person except for:

            (a) sales of inventory in the ordinary course of business; and

            (b) leases, sales, transfers or other dispositions of its Property
that, together with all other Property of the Borrower and its Subsidiaries
previously leased, sold or disposed of (other than inventory or Investments
(other than Investments in Subsidiaries) sold in the ordinary course of
business) as permitted by this Section 7.13 since the Closing Date, do not
constitute a Substantial Portion of the Property of the Borrower and its
Subsidiaries.

      7.14. Investments and Acquisitions. The Borrower will not, nor will it
permit any Subsidiary to, make or suffer to exist any Investment (including,
without limitation, loans and advances to, and other Investments in,
Subsidiaries), or commitments therefor, or to create any Subsidiary or to become
or remain a partner in any partnership or joint venture, or to make any
Acquisitions, except:

            (a) Cash Equivalent Investments;

            (b) Investments in debt securities rated A- or better by S&P, A-3 or
better by Moody's or NAIC-1 or better by the NAIC;

            (c) existing Investments in Subsidiaries and other Investments in
existence on the Closing Date;

            (d) Investments in debt securities not satisfying any of the
standards set forth in clause (b) above but rated BBB- or better by S&P, Baa-3
or better by Moody's or NAIC-2 or better by the NAIC; provided, that if any such
Investment ceases to meet such ratings requirements, then such Investment shall
be permitted hereby for a period of 180 days after the date on which such
ratings requirement is no longer satisfied; provided, further, that all such
Investments under this clause (d) do not exceed, in the aggregate at any one
time outstanding, 10% of the combined Investments of the Borrower and its
Subsidiaries;

            (e) Investments by the Borrower in equity securities in an aggregate
amount not to exceed 10% of the Consolidated Net Worth of the Borrower and its
Consolidated Subsidiaries; provided, that no single Investment in equity
securities shall be in an amount in excess of 5% of the Consolidated Net Worth
of the Borrower and its Consolidated Subsidiaries;

            (f) other Investments after the Closing Date in an aggregate amount
not to exceed $5,000,000; and


                                      -47-
<PAGE>   58
            (g) Acquisitions in an aggregate amount not to exceed $5,000,000 in
any Fiscal Year.

      7.15. Contingent Obligations. The Borrower will not, nor will it permit
any Subsidiary to, make or suffer to exist any Contingent Obligation (including,
without limitation, any Contingent Obligation with respect to the obligations of
a Subsidiary), except (a) by endorsement of instruments for deposit or
collection in the ordinary course of business, (b) Contingent Obligations in
respect of Letters of Credit; provided, however, that the Borrower may guarantee
(i) the obligations of any Person that is its or its Subsidiary's employee so
long as the aggregate amount of all such guaranteed obligations, taken together
with the aggregate amount of any and all loans to such Persons by the Borrower
in accordance with Section 7.14 outstanding at any time do not in the aggregate
exceed $250,000, (ii) the obligations of any Subsidiary under leases of Property
entered into in the ordinary course of business in an aggregate amount not to
exceed $500,000 and (iii) Contingent Obligations in respect of letters of credit
issued by Munichener Ruckversicherung Aktiengesellschaft (d/b/a Munich) in an
aggregate amount not to exceed pound sterling 10,625,000.

      7.16. Liens. The Borrower will not, nor will it permit any Subsidiary to,
create, incur, or suffer to exist any Lien in, of or on the Property of the
Borrower or any of its Subsidiaries, except:

            (a) Liens for taxes, assessments or governmental charges or levies
on its Property if the same shall not at the time be delinquent or thereafter
can be paid without penalty, or are being contested in good faith and by
appropriate proceedings and for which adequate reserves in accordance with
Agreement Accounting Principles shall have been set aside on its books;

            (b) Liens imposed by law, such as carriers', warehousemen's and
mechanics' Liens and other similar Liens arising in the ordinary course of
business which secure the payment of obligations not more than 60 days past due
or which are being contested in good faith by appropriate proceedings and for
which adequate reserves shall have been set aside on its books;

            (c) Liens arising out of pledges or deposits under worker's
compensation laws, unemployment insurance, old age pensions, or other social
security or retirement benefits, or similar legislation;

            (d) Utility easements, building restrictions and such other
encumbrances or charges against real property as are of a nature generally
existing with respect to properties of a similar character and which do not in
any material way affect the marketability of the same or interfere with the use
thereof in the business of the Borrower or its Subsidiaries;

            (e) Liens existing on the Closing Date and described in Schedule
7.16 hereto;

            (f) Liens in favor of the Agent, for the benefit of the Lenders,
granted pursuant to the Pledge Agreement or pursuant to the Cash Collateral
Security Agreement;

            (g) Deposits of cash or securities with or on behalf of state
insurance departments reflected in the Insurance Subsidiaries' Statutory
Financial Statements; and


                                      -48-
<PAGE>   59
            (h) Deposits of cash or securities by the Borrower with Lloyd's of
London.

      7.17. Affiliates. The Borrower will not, and will not permit any
Subsidiary to, enter into any transaction (including, without limitation, the
purchase or sale of any Property or service) with, or make any payment or
transfer to, any Affiliate except in the ordinary course of business and
pursuant to the reasonable requirements of the Borrower's or such Subsidiary's
business and upon fair and reasonable terms no less favorable to the Borrower or
such Subsidiary than the Borrower or such Subsidiary would obtain in a
comparable arms-length transaction.

      7.18. Amendments to Agreements. The Borrower will not, and will not permit
any Subsidiary to, amend, waive, modify or terminate its certificate or articles
of incorporation or by-laws.

      7.19. Change in Fiscal Year. The Borrower shall not, nor shall it permit
any Subsidiary to, change its Fiscal Year to end on any date other than December
31 of each year.

      7.20. Inconsistent Agreements. The Borrower shall not, nor shall it permit
any Subsidiary to, enter into any indenture, agreement, instrument or other
arrangement which, (a) directly or indirectly prohibits or restrains, or has the
effect of prohibiting or restraining, or imposes materially adverse conditions
upon, the incurrence of the Obligations, the granting of Liens to secure the
Obligations, the amending of the Facility Documents, the amending of the
Facility Documents or the ability of any Subsidiary to (i) pay dividends or make
other distributions on its capital stock, (ii) make loans or advances to the
Borrower or (iii) repay loans or advances from the Borrower or (b) contains any
provision which would be violated or breached by the making of Revolving Credit
Advances, by the issuance of Letters of Credit or by the performance by the
Borrower or any Subsidiary of any of its Obligations under any Facility
Document.

      7.21. Year 2000. The Borrower will take and will cause each of its
Subsidiaries to take all such actions as are reasonably necessary to
successfully implement the Year 2000 Program and to assure that Year 2000 Issues
will not have a Material Adverse Effect. At the request of the Agent or any
Lender, the Borrower will provide a description of the Year 2000 Program,
together with any updates or progress reports with respect thereto.

      7.22. Reinsurance. (a) The Borrower shall cause each Insurance Subsidiary
to maintain reinsurance protection with respect to each type of risk it writes
which reinsurance protection, in the event of a loss, limits the net loss of
such Insurance Subsidiary to 2.5% or less of the Statutory Surplus of such
Insurance Subsidiary.

            (b) The Borrower shall not cause or permit an Insurance Subsidiary
to enter into or maintain, as a cedent, reinsurance agreements or retrocession
agreements with any Person other than an Approved Reinsurer.

            (c) The Borrower shall not cause or permit an Insurance Subsidiary
to enter into or maintain, as a cedent, reinsurance agreements or retrocesssion
agreements with any Person which


                                      -49-
<PAGE>   60
do not comply with the guidelines for reinsurance by Insurance Subsidiaries set
forth on Schedule 7.22 hereto, as amended with the consent of the Lenders (the
"Reinsurance Guidelines").

      7.23. Stock of Subsidiaries. The Borrower shall not sell or otherwise
dispose of (including the granting of any security interest in) any shares of
capital stock of any Subsidiary other than pursuant to the Pledge Agreement, or
permit any Subsidiary to issue additional shares of its capital stock, except
the minimum number of directors' qualifying shares required by applicable law.

      7.24. Financial Covenants.

            7.24.1. Minimum Consolidated Tangible Net Worth. The Borrower will
at all times maintain Consolidated Tangible Net Worth of not less than the sum
of (a) $110,729,000, plus (b) 75% of the positive Consolidated Net Income, if
any, earned in each Fiscal Quarter beginning with the Fiscal Quarter ended
September 30, 1998, plus (c) 75% of the Net Available Proceeds of any equity
issuance (including any capital contribution to surplus of the Borrower in
respect of which no additional shares are issued) by the Borrower after the
Closing Date.

            7.24.2. Minimum Statutory Surplus. The Borrower will at all times
cause the Significant Insurance Subsidiaries to maintain an aggregate Statutory
Surplus of not less than the sum of (a) $106,883,000, plus (b) 50% of the
positive aggregate Statutory Net Income if any, earned by the Significant
Insurance Subsidiaries in each Fiscal Quarter beginning with the Fiscal Quarter
ended September 30, 1998, plus (c) 75% of the Net Available Proceeds of any
equity issuance (including any capital contribution to surplus of any
Significant Insurance Subsidiary in respect of which no additional shares are
issued) by any Significant Insurance Subsidiary after the Closing Date.

            7.24.3. Leverage Ratio. The Borrower will not permit the Leverage
Ratio to exceed 0.25 to 1.0 at any time.

            7.24.4. Minimum Risk-Based Capital. The Borrower will cause each
Significant Insurance Subsidiary to maintain a ratio of (a) Total Adjusted
Capital (as defined in the Risk-Based Capital Act or in the rules and procedures
prescribed from time to time by the NAIC with respect thereto) to (b) the
Company Action Level RBC (as defined in the Risk-Based Capital Act or in the
rules and procedures prescribed from time to time by the NAIC with respect
thereto) of at least 150%.

      7.25. Additional Pledge. Effective upon any Person becoming a Significant
Subsidiary, the parent thereof shall pledge the stock or other equity interests
thereof to the Agent for the benefit of the Lenders pursuant to documentation
reasonably acceptable to the Agent.

                                  ARTICLE VIII

                                    DEFAULTS

      The occurrence of any one or more of the following events shall constitute
a Default:


                                      -50-
<PAGE>   61
      8.1. Any representation or warranty made or deemed made by or on behalf of
the Borrower or any of its Subsidiaries to the Lenders or the Agent under or in
connection with this Agreement, any other Facility Document, any Revolving
Credit Loan, any Letter of Credit or any certificate or information delivered in
connection with this Agreement or any other Facility Document shall be false in
any material respect on the date as of which made or deemed made.

      8.2. Nonpayment of (a) any principal of any Revolving Credit Loan or any
Reimbursement Obligation when due, or (b) any interest upon any Revolving Credit
Loan or any commitment or other fee or obligations under any of the Facility
Documents within five days after the same becomes due.

      8.3. The breach by the Borrower of any of the terms or provisions of
Sections 3.8, 7.2, or Sections 7.10 through 7.24.

      8.4. The breach by the Borrower (other than a breach which constitutes a
Default under Section 8.1, 8.2 or 8.3) of any of the terms or provisions of this
Agreement which is not remedied within thirty (30) days after written notice
from the Agent or any Lender.

      8.5. Failure of the Borrower or any of its Subsidiaries to pay any
Indebtedness aggregating in excess of $100,000 when due; or the default by the
Borrower or any of its Subsidiaries in the performance of any term, provision or
condition contained in any agreement under which any such Indebtedness was
created or is governed, or the occurrence of any other event or existence of any
other condition, the effect of any of which is to cause, or to permit the holder
or holders of such Indebtedness to cause, such Indebtedness to become due prior
to its stated maturity; or any such Indebtedness of the Borrower or any of its
Subsidiaries shall be declared to be due and payable or required to be prepaid
(other than by a regularly scheduled payment) prior to the stated maturity
thereof.

      8.6. The Borrower or any of its Subsidiaries shall (a) have an order for
relief entered with respect to it under the Federal bankruptcy laws as now or
hereafter in effect, (b) make an assignment for the benefit of creditors, (c)
apply for, seek, consent to, or acquiesce in, the appointment of a receiver,
custodian, trustee, examiner, liquidator or similar official for it or any
Substantial Portion of its Property, (d) institute any proceeding seeking an
order for relief under the Federal bankruptcy laws as now or hereafter in effect
or seeking to adjudicate it a bankrupt or insolvent, or seeking dissolution,
winding up, liquidation, reorganization, arrangement, adjustment or composition
of it or its debts under any law relating to bankruptcy, insolvency or
reorganization or relief of debtors or fail to file an answer or other pleading
denying the material allegations of any such proceeding filed against it, (e)
take any corporate action to authorize or effect any of the foregoing actions
set forth in this Section 8.6, (f) fail to contest in good faith any appointment
or proceeding described in Section 8.7 or (g) become unable to pay, not pay, or
admit in writing its inability to pay, its debts generally as they become due.

      8.7. Without the application, approval or consent of the Borrower or any
of its Subsidiaries, a receiver, trustee, examiner, liquidator or similar
official shall be appointed for the Borrower or any of its Subsidiaries or any
Substantial Portion of its Property, or a proceeding


                                      -51-
<PAGE>   62
described in Section 8.6(d) shall be instituted against the Borrower or any of
its Subsidiaries and such appointment continues undischarged or such proceeding
continues undismissed or unstayed for a period of thirty consecutive days.

      8.8. Any court, government or governmental agency shall condemn, seize or
otherwise appropriate, or take custody or control of (each a "Condemnation"),
all or any portion of the Property of the Borrower and its Subsidiaries which,
when taken together with all other Property of the Borrower and its Subsidiaries
so condemned, seized, appropriated, or taken custody or control of, during the
twelve-month period ending with the month in which any such Condemnation occurs,
constitutes a Substantial Portion.

      8.9. The Borrower or any of its Subsidiaries shall fail within thirty days
to pay, bond or otherwise discharge on or more (a) judgments or orders for the
payment of money in excess of $100,000 (or the equivalent thereof in currencies
other than U.S. Dollars) in the aggregate, or (b) nonmonetary judgments or
orders which, individually or in the aggregate, could reasonably be expected to
have a Material Adverse Effect, which judgment(s), in any such case, is/are not
stayed on appeal or otherwise being appropriately contested in good faith.

      8.10. Any Reportable Event shall occur in connection with any Plan.

      8.11. The Borrower or any other member of the Controlled Group shall have
been notified by the sponsor of a Multiemployer Plan that it has incurred
withdrawal liability to such Multiemployer Plan in an amount which, when
aggregated with all other amounts required to be paid to Multiemployer Plans by
the Borrower or any other member of the Controlled Group as withdrawal liability
(determined as of the date of such notification), exceeds $100,000.

      8.12. The Borrower or any other member of the Controlled Group shall have
been notified by the sponsor of a Multiemployer Plan that such Multiemployer
Plan is in reorganization or is being terminated, within the meaning of Title IV
of ERISA, if as a result of such reorganization or termination the aggregate
annual contributions of the Borrower and the other members of the Controlled
Group (taken as a whole) to all Multiemployer Plans which are then in
reorganization or being terminated have been or will be increased over the
amounts contributed to such Multiemployer Plans for the respective plan years of
each such Multiemployer Plan immediately preceding the plan year in which the
reorganization or termination occurs by an amount exceeding $100,000.

      8.13. The Borrower or any of its Subsidiaries shall (a) be the subject to
any proceeding or investigation pertaining to the release by the Borrower, any
of its Subsidiaries or any other Person of any toxic or hazardous waste or
substance into the environment, or (b) violate any Environmental Law, which, in
the case of an event described in clause (a) or (b), could reasonably be
expected to have a Material Adverse Effect.

      8.14. Any Change in Control shall occur.

      8.15. The occurrence of any "default", as defined in any Facility Document
(other than this Agreement or the Revolving Credit Notes) or the breach of any
of the terms or provisions


                                      -52-
<PAGE>   63
of any Facility Document (other than this Agreement or the Revolving Credit
Notes), which default or breach continues beyond any period of grace therein
provided.

      8.16. The Pledge Agreement shall for any reason fail to create a valid and
perfected first priority security interest in any collateral purported to be
covered thereby, except as permitted by the terms thereof, or the Pledge
Agreement shall fail to remain in full force or effect or any action shall be
taken to discontinue or to assert the invalidity or unenforceability of the
Pledge Agreement, or the Borrower shall fail to comply with any of the terms or
provisions of the Pledge Agreement.

      8.17. Navigators, NIC or any other Significant Insurance Subsidiary shall
cease to be rated "A-" or better by A.M. Best & Co. or shall cease to have an
S&P Financial Strength Rating (as defined in the Pricing Schedule) of "BBB-" or
better.

      8.18. There shall occur a change in the business, Property, condition
(financial or otherwise) or results of operations of the Borrower and its
Subsidiaries which has a Material Adverse Effect.

      8.19. The Borrower or any of its Subsidiaries incurs or becomes subject to
action or threatened action of any Governmental Authority, including, without
limitation, a fine, penalty, cease and desist order or revocation, suspension or
limitation of a License, the effect of which could reasonably be expected to
have a Material Adverse Effect.

      8.20. Terence N. Deeks shall at any time cease to hold the office of Chief
Executive Officer of the Borrower or shall cease to be actively involved in the
operation of the Borrower unless within one hundred eighty (180) days of such
event the Borrower hires or promotes a Person with the skills and abilities to
perform the functions previously performed by Terence N. Deeks, and such Person
is approved by the Lenders in their sole discretion.

      8.21. Any Security Document shall for any reason fail to create a valid
and perfected, first priority security interest in any collateral purported to
be covered thereby, except as permitted by the terms of such Security Document,
or any Security Document, once executed, shall fail to remain in full force or
effect or any action shall be taken to discontinue or to assert the invalidity
or unenforceability of any Security Document.


                                   ARTICLE IX

                 ACCELERATION, WAIVERS, AMENDMENTS AND REMEDIES

      9.1. Acceleration. If any Default described in Section 8.6 or 8.7 occurs
with respect to the Borrower, the obligations of the Lenders to make Revolving
Credit Loans and issue Letters of Credit hereunder shall automatically terminate
and the Obligations shall immediately become due and payable without any
election or action on the part of the Agent or any Lender. If any other Default
occurs, the Required Lenders (or the Agent with the consent of the Required
Lenders) may terminate or suspend the obligations of the Lenders to make
Revolving Credit Loans and/or issue Letters of


                                      -53-
<PAGE>   64
Credit hereunder, or declare the Obligations to be due and payable, or both,
whereupon the Obligations shall become immediately due and payable, without
presentment, demand, protest or notice of any kind, all of which the Borrower
hereby expressly waives. In addition to the foregoing, following the occurrence
and during the continuance of a Default, so long as any Letter of Credit has not
been fully drawn and has not been canceled or expired by its terms, upon demand
by the Agent (which demand shall be made upon the request of the Required
Lenders), the Borrower shall deposit in an account (the "Letter of Credit Cash
Collateral Account") maintained with First Chicago in the name of the Agent, for
the ratable benefit of the Lenders and the Agent, cash or Cash Collateral
Investments in an amount necessary to make the balance in such account equal to
the aggregate undrawn face amount of all outstanding Letters of Credit and all
fees and other amounts due or which may become due with respect thereto.
Following the occurrence and during the continuance of a Default, the Borrower
shall have no control over funds deposited in the Letter of Credit Cash
Collateral Account pursuant to this Section, which funds shall be invested by
the Agent from time to time in its discretion in certificates of deposit of
First Chicago having a maturity not exceeding thirty (30) days. Such funds shall
be promptly applied by the Agent to reimburse the Issuer for drafts drawn from
time to time under the Letters of Credit. Such funds, if any, remaining in the
Letter of Credit Cash Collateral Account following the payment of all
Obligations in full or the earlier termination of all Defaults shall, unless the
Agent is otherwise directed by a court of competent jurisdiction, be promptly
paid over to the Borrower.

      If, within thirty (30) days after acceleration of the maturity of the
Obligations or termination of the obligations of the Lenders to make Revolving
Credit Loans and/or issue Letters of Credit hereunder as a result of any Default
(other than any Default as described in Section 8.6 or 8.7 with respect to the
Borrower) and before any judgment or decree for the payment of the Obligations
due shall have been obtained or entered, the Required Lenders (in their sole
discretion) shall so direct, the Agent shall, by notice to the Borrower, rescind
and annul such acceleration and/or termination.

      9.2. Amendments. Subject to the provisions of this Article IX, the
Required Lenders (or the Agent with the consent of the Required Lenders) and the
Borrower may enter into agreements supplemental hereto for the purpose of adding
or modifying any provisions to the Facility Documents or changing in any manner
the rights of the Lenders or the Borrower hereunder or waiving any Default
hereunder; provided, however, that no such supplemental agreement shall, without
the consent of each Lender:

            (a) Extend the final maturity of any Revolving Credit Loan or
forgive all or any portion of the principal amount thereof, or reduce the rate
or extend the time of payment of interest or fees hereunder;

            (b) Reduce the percentage specified in the definition of Required
Lenders;

            (c) Reduce the amount of or extend the date for the mandatory
payments and commitment and facility reductions required under Section 2.1(b) or
2.7, or increase the amount of the Revolving Credit Commitment or Letter of
Credit Participation Amount of any Lender hereunder;


                                      -54-
<PAGE>   65
            (d) Extend the Revolving Credit Termination Date or the Letter of
Credit Termination Date, permit any Letter of Credit to have an expiry date
beyond the fifth anniversary of its effective date, permit the amendment or
extension of any Letter of Credit or, except as otherwise set forth in Section
3.1(b), permit the renewal of any Letter of Credit;

            (e) Amend Section 7.11, 7.12 or 7.24, clauses (a) through (f) of
Section 7.14 or this Section 9.2;

            (f) Release any guarantor of any Obligations or, except as provided
in the Pledge Agreement, release all or substantially all of the collateral for
the Obligations;

            (g) Permit any assignment by the Borrower of its Obligations or its
rights hereunder; or

            (h) Permit any amendment of the Reinsurance Guidelines.

No amendment of any provision of this Agreement relating to the Agent shall be
effective without the written consent of the Agent. The Agent may waive payment
of the fee required under Section 13.3.2 without obtaining the consent of any
other party to this Agreement.

      9.3. Preservation of Rights. No delay or omission of the Lenders or the
Agent to exercise any right under the Facility Documents shall impair such right
or be construed to be a waiver of any Default or an acquiescence therein, and
the making of a Revolving Credit Loan or the issuance of a Letter of Credit
notwithstanding the existence of a Default or the inability of the Borrower to
satisfy the conditions precedent to such Revolving Credit Loan or Letter of
Credit shall not constitute any waiver or acquiescence. Any single or partial
exercise of any such right shall not preclude other or further exercise thereof
or the exercise of any other right, and no waiver, amendment or other variation
of the terms, conditions or provisions of the Facility Documents whatsoever
shall be valid unless in writing signed by the Lenders required pursuant to
Section 9.2, and then only to the extent in such writing specifically set forth.
All remedies contained in the Facility Documents or by law afforded shall be
cumulative and all shall be available to the Agent and the Lenders until the
Obligations have been paid in full.


                                    ARTICLE X

                               GENERAL PROVISIONS

      10.1. Survival of Representations. All representations and warranties of
the Borrower contained in this Agreement or in any Facility Document shall
survive the making of the Revolving Credit Loans and the issuance of the Letters
of Credit herein contemplated.

      10.2. Governmental Regulation. Anything contained in this Agreement to the
contrary notwithstanding, no Lender shall be obligated to extend credit to the
Borrower in violation of any limitation or prohibition provided by any
applicable statute or regulation.


                                      -55-
<PAGE>   66
      10.3. Headings. Section headings in the Facility Documents are for
convenience of reference only, and shall not govern the interpretation of any of
the provisions of the Facility Documents.

      10.4. Entire Agreement. The Facility Documents embody the entire agreement
and understanding among the Borrower, the Agent, the Co-Agent and the Lenders
and supersede all prior agreements and understandings among the Borrower, the
Agent, the Co-Agent and the Lenders relating to the subject matter thereof other
than the fee letter dated October 23, 1998 in favor of First Chicago, Brown
Brothers and First Chicago Capital Markets, Inc. (the "Fee Letter").

      10.5. Numbers of Documents. All statements, notices, closing documents,
and requests hereunder shall be furnished to the Agent with sufficient
counterparts so that the Agent may furnish one to each of the Lenders.

      10.6. Several Obligations; Benefits of this Agreement. The respective
obligations of the Lenders hereunder are several and not joint and no Lender
shall be the partner or agent of any other (except to the extent to which the
Agent is authorized to act as such). The failure of any Lender to perform any of
its obligations hereunder shall not relieve any other Lender from any of its
obligations hereunder. This Agreement shall not be construed so as to confer any
right or benefit upon any Person other than the parties to this Agreement and
their respective successors and assigns, provided, however, that the parties
hereto expressly agree that the Arranger shall enjoy the benefits of the
provisions of Sections 10.7, 10.11 and 11.11 to the extent specifically set
forth therein and shall have the right to enforce such provisions on its own
behalf and in its own name to the same extent as if it were a party to this
Agreement.

      10.7. Expenses; Indemnification. (a) The Borrower shall reimburse the
Agent, the Arranger and the Co-Agent for any costs, internal charges and
out-of-pocket expenses (including attorneys' fees and time charges of attorneys
for the Agent, which attorneys may be employees of the Agent) paid or incurred
by the Agent, the Arranger or the Co-Agent in connection with the preparation,
negotiation, execution, delivery, syndication, review, amendment, modification,
and administration of the Facility Documents. The Borrower also agrees to
reimburse the Agent, the Arranger, the Co-Agent and the Lenders for any costs,
internal charges and out-of-pocket expenses (including attorneys' fees and time
charges of attorneys for the Agent, the Arranger, the Co-Agent and the Lenders,
which attorneys may be employees of the Agent, the Arranger, the Co-Agent or the
Lenders) paid or incurred by the Agent, the Arranger, the Co-Agent or any Lender
in connection with the investigation, collection and enforcement of the Facility
Documents.

            (b) The Borrower hereby further agrees to indemnify the Agent, the
Arranger, the Co-Agent and each Lender, its directors, officers, partners and
employees against all losses, claims, damages, penalties, judgments, liabilities
and expenses (including, without limitation, all expenses of litigation or
preparation therefor whether or not the Agent, the Arranger, the Co-Agent or any
Lender is a party thereto) which any of them may pay or incur arising out of or
relating to this Agreement, the other Facility Documents, the transactions
contemplated hereby or the direct or indirect application or proposed
application of the proceeds of any Revolving Credit Loan hereunder except


                                      -56-
<PAGE>   67
to the extent that they have resulted from the gross negligence or willful
misconduct of the party seeking indemnification. The obligations of the Borrower
under this Section 10.7 shall survive the termination of this Agreement.

      10.8. Accounting. Except as provided to the contrary herein, all
accounting terms used herein shall be interpreted and all accounting
determinations hereunder shall be made in accordance with Agreement Accounting
Principles. In the event the pages, columns, lines or sections of the Annual
Statement referenced herein are changed or renumbered, all such references shall
be deemed references to such page, column, line or section as so renumbered or
changed.

      10.9. Severability of Provisions. Any provision in any Facility Document
that is held to be inoperative, unenforceable, or invalid in any jurisdiction
shall, as to that jurisdiction, be inoperative, unenforceable, or invalid
without affecting the remaining provisions in that jurisdiction or the
operation, enforceability, or validity of that provision in any other
jurisdiction, and to this end the provisions of all Facility Documents are
declared to be severable.

      10.10. Nonliability of Lenders. The relationship between the Borrower on
the one hand and the Lenders and the Agent on the other hand shall be solely
that of borrower and lender. Neither the Agent, the Arranger nor any Lender
shall have any fiduciary responsibilities to the Borrower. Neither the Agent,
the Arranger nor any Lender undertakes any responsibility to the Borrower to
review or inform the Borrower of any matter in connection with any phase of the
Borrower's business or operations. The Borrower agrees that neither the Agent,
the Arranger nor any Lender shall have liability to the Borrower (whether
sounding in tort, contract or otherwise) for losses suffered by the Borrower in
connection with, arising out of, or in any way related to, the transactions
contemplated and the relationship established by the Facility Documents, or any
act, omission or event occurring in connection therewith, unless it is
determined in a final non-appealable judgment by a court of competent
jurisdiction that such losses resulted from the gross negligence or willful
misconduct of the party from which recovery is sought. Neither the Agent, the
Arranger nor any Lender shall have any liability with respect to, and the
Borrower hereby waives, releases and agrees not to sue for, any special,
indirect or consequential damages suffered by the Borrower in connection with,
arising out of, or in any way related to the Facility Documents or the
transactions contemplated thereby.

      10.11. Confidentiality. Each Lender agrees to hold any confidential
information which it may receive from the Borrower pursuant to this Agreement in
confidence, except for disclosure (a) to its Affiliates and to other Lenders and
their respective Affiliates, (b) to legal counsel, accountants, and other
professional advisors to such Lender or to a Transferee, (c) to regulatory
officials, (d) to any Person as requested pursuant to or as required by law,
regulation, or legal process, (e) to any Person in connection with any legal
proceeding to which such Lender is a party, (f) to such Lender's direct or
indirect contractual counterparties in swap agreements or to legal counsel,
accountants and other professional advisors to such counterparties and (g)
permitted by Section 13.4.

      10.12. Nonreliance. Each Lender hereby represents that it is not relying
on or looking to any margin stock (as defined in Regulation U of the Board of
Governors of the Federal Reserve System) for the repayment of the Revolving
Credit Loans provided for herein.


                                      -57-
<PAGE>   68
      10.13.Disclosure. The Borrower and each Lender hereby (a) acknowledge and
agree that First Chicago and/or its Affiliates from time to time may hold other
investments in, make other loans to or have other relationships with the
Borrower, and (b) waive any liability of First Chicago or such Affiliate to the
Borrower or any Lender, respectively, arising out of or resulting from such
investments, loans or relationships other than liabilities arising out of the
gross negligence or willful misconduct of First Chicago or its Affiliates.


                                   ARTICLE XI

                                    THE AGENT

      11.1. Appointment; Nature of Relationship. The First National Bank of
Chicago is hereby appointed by each of the Lenders as its contractual
representative (herein referred to as the "Agent") hereunder and under each
other Facility Document, and each of the Lenders irrevocably authorizes the
Agent to act as the contractual representative of such Lender with the rights
and duties expressly set forth herein and in the other Facility Documents. The
Agent agrees to act as such contractual representative upon the express
conditions contained in this Article XI. Notwithstanding the use of the defined
term "Agent," it is expressly understood and agreed that the Agent shall not
have any fiduciary responsibilities to any Lender by reason of this Agreement or
any other Facility Document and that the Agent is merely acting as the
contractual representative of the Lenders with only those duties as are
expressly set forth in this Agreement and the other Facility Documents. In its
capacity as the Lenders' contractual representative, the Agent (a) does not
hereby assume any fiduciary duties to any of the Lenders, (b) is a
"representative" of the Lenders within the meaning of Section 9-105 of the
Uniform Commercial Code and (c) is acting as an independent contractor, the
rights and duties of which are limited to those expressly set forth in this
Agreement and the other Facility Documents. Each of the Lenders hereby agrees to
assert no claim against the Agent on any agency theory or any other theory of
liability for breach of fiduciary duty, all of which claims each Lender hereby
waives.

      11.2. Powers. The Agent shall have and may exercise such powers under the
Facility Documents as are specifically delegated to the Agent by the terms of
each thereof, together with such powers as are reasonably incidental thereto.
The Agent shall have no implied duties to the Lenders, or any obligation to the
Lenders to take any action thereunder except any action specifically provided by
the Facility Documents to be taken by the Agent.

      11.3. General Immunity. Neither the Agent nor any of its directors,
officers, agents or employees shall be liable to the Borrower, the Lenders or
any Lender for any action taken or omitted to be taken by it or them hereunder
or under any other Facility Document or in connection herewith or therewith
except to the extent such action or inaction is determined in a final
non-appealable judgment by a court of competent jurisdiction to have arisen from
the gross negligence or willful misconduct of such Person.

      11.4. No Responsibility for Revolving Credit Loans, Recitals, etc. Neither
the Agent nor any of its directors, officers, agents or employees shall be
responsible for or have any duty to ascertain, inquire into, or verify: (a) any
statement, warranty or representation made in connection


                                      -58-
<PAGE>   69
with any Facility Document or any borrowing hereunder; (b) the performance or
observance of any of the covenants or agreements of any obligor under any
Facility Document, including, without limitation, any agreement by an obligor to
furnish information directly to each Lender; (c) the satisfaction of any
condition specified in Article V, except receipt of items required to be
delivered solely to the Agent; (d) the existence or possible existence of any
Default or Unmatured Default; (e) the validity, enforceability, effectiveness,
sufficiency or genuineness of any Facility Document or any other instrument or
writing furnished in connection therewith; (f) the value, sufficiency, creation,
perfection or priority of any Lien in any collateral security; or (g) the
financial condition of the Borrower or any guarantor of any of the Obligations
or of any of the Borrower's or any such guarantor's respective Subsidiaries. The
Agent shall have no duty to disclose to the Lenders information that is not
required to be furnished by the Borrower to the Agent at such time, but is
voluntarily furnished by the Borrower to the Agent (either in its capacity as
Agent or in its individual capacity).

      11.5. Action on Instructions of Lenders. The Agent shall in all cases be
fully protected in acting, or in refraining from acting, hereunder and under any
other Facility Document in accordance with written instructions signed by the
Required Lenders, and such instructions and any action taken or failure to act
pursuant thereto shall be binding on all of the Lenders. The Lenders hereby
acknowledge that the Agent shall be under no duty to take any discretionary
action permitted to be taken by it pursuant to the provisions of this Agreement
or any other Facility Document unless it shall be requested in writing to do so
by the Required Lenders. The Agent shall be fully justified in failing or
refusing to take any action hereunder and under any other Facility Document
unless it shall first be indemnified to its satisfaction by the Lenders pro rata
against any and all liability, cost and expense that it may incur by reason of
taking or continuing to take any such action.

      11.6. Employment of Agent and Counsel. The Agent may execute any of its
duties as Agent hereunder and under any other Facility Document by or through
employees, agents, and attorneys-in-fact and shall not be answerable to the
Lenders, except as to money or securities received by it or its authorized
agents, for the default or misconduct of any such agents or attorneys-in-fact
selected by it with reasonable care. The Agent shall be entitled to advice of
counsel concerning the contractual arrangement between the Agent and the Lenders
and all matters pertaining to the Agent's duties hereunder and under any other
Facility Document.

      11.7. Reliance on Documents; Counsel. The Agent shall be entitled to rely
upon any Revolving Credit Note, notice, consent, certificate, affidavit, letter,
telegram, statement, paper or document believed by it to be genuine and correct
and to have been signed or sent by the proper person or persons, and, in respect
to legal matters, upon the opinion of counsel selected by the Agent, which
counsel may be employees of the Agent.

      11.8. Agent's Reimbursement and Indemnification. The Lenders agree to
reimburse and indemnify the Agent ratably in proportion to their respective
Revolving Credit Commitments and Letter of Credit Participation Amounts (or, if
the Aggregate Revolving Credit Commitments and Letter of Credit Commitments have
been terminated, in proportion to their Revolving Credit Commitments and Letter
of Credit Participation Amounts immediately prior to such termination) (a) for
any amounts not reimbursed by the Borrower for which the Agent is entitled to
reimbursement


                                      -59-
<PAGE>   70
by the Borrower under the Facility Documents, (b) for any other expenses
incurred by the Agent on behalf of the Lenders, in connection with the
preparation, execution, delivery, administration and enforcement of the Facility
Documents (including, without limitation, for any expenses incurred by the Agent
in connection with any dispute between the Agent and any Lender or between two
or more of the Lenders) and (c) for any liabilities, obligations, losses,
damages, penalties, actions, judgments, suits, costs, expenses or disbursements
of any kind and nature whatsoever which may be imposed on, incurred by or
asserted against the Agent in any way relating to or arising out of the Facility
Documents or any other document delivered in connection therewith or the
transactions contemplated thereby (including, without limitation, for any such
amounts incurred by or asserted against the Agent in connection with any dispute
between the Agent and any Lender or between two or more of the Lenders), or the
enforcement of any of the terms of the Facility Documents or of any such other
documents; provided that (i) no Lender shall be liable for any of the foregoing
to the extent any of the foregoing is found in a final non-appealable judgment
by a court of competent jurisdiction to have resulted from the gross negligence
or willful misconduct of the Agent and (ii) any indemnification required
pursuant to Section 4.5(g) shall, notwithstanding the provisions of this Section
11.8, be paid by the relevant Lender in accordance with the provisions thereof.
The obligations of the Lenders under this Section 11.8 shall survive payment of
the Obligations and termination of this Agreement.

      11.9. Notice of Default. The Agent shall not be deemed to have knowledge
or notice of the occurrence of any Default or Unmatured Default hereunder unless
the Agent has received written notice from a Lender or the Borrower referring to
this Agreement describing such Default or Unmatured Default and stating that
such notice is a "notice of default". In the event that the Agent receives such
a notice, the Agent shall give prompt notice thereof to the Lenders.

      11.10. Rights as a Lender. In the event the Agent is a Lender, the Agent
shall have the same rights and powers hereunder and under any other Facility
Document with respect to its Revolving Credit Commitment, its Revolving Credit
Loans and any Letters of Credit in which it has an interest as any Lender and
may exercise the same as though it were not the Agent, and the term "Lender" or
"Lenders" shall, at any time when the Agent is a Lender, unless the context
otherwise indicates, include the Agent in its individual capacity. The Agent and
its Affiliates may accept deposits from, lend money to, and generally engage in
any kind of trust, debt, equity or other transaction, in addition to those
contemplated by this Agreement or any other Facility Document, with the Borrower
or any of its Subsidiaries in which the Borrower or such Subsidiary is not
restricted hereby from engaging with any other Person. The Agent, in its
individual capacity, is not obligated to remain a Lender.

      11.11. Lender Credit Decision. Each Lender acknowledges that it has,
independently and without reliance upon the Agent, the Arranger or any other
Lender and based on the financial statements prepared by the Borrower and such
other documents and information as it has deemed appropriate, made its own
credit analysis and decision to enter into this Agreement and the other Facility
Documents. Each Lender also acknowledges that it will, independently and without
reliance upon the Agent, the Arranger or any other Lender and based on such
documents and information as it shall deem appropriate at the time, continue to
make its own credit decisions in taking or not taking action under this
Agreement and the other Facility Documents.


                                      -60-
<PAGE>   71
      11.12.Successor Agent. The Agent may resign at any time by giving written
notice thereof to the Lenders and the Borrower, such resignation to be effective
upon the appointment of a successor Agent or, if no successor Agent has been
appointed, forty-five days after the retiring Agent gives notice of its
intention to resign. The Agent may be removed at any time with or without cause
by written notice received by the Agent from the Required Lenders, such removal
to be effective on the date specified by the Required Lenders. Upon any such
resignation or removal, the Required Lenders shall have the right to appoint, on
behalf of the Borrower and the Lenders, a successor Agent. If no successor Agent
shall have been so appointed by the Required Lenders within thirty days after
the resigning Agent's giving notice of its intention to resign, then the
resigning Agent may appoint, on behalf of the Borrower and the Lenders, a
successor Agent. Notwithstanding the previous sentence, the Agent may at any
time without the consent of the Borrower or any Lender, appoint any of its
Affiliates which is a commercial bank as a successor Agent hereunder. If the
Agent has resigned or been removed and no successor Agent has been appointed,
the Lenders may perform all the duties of the Agent hereunder and the Borrower
shall make all payments in respect of the Obligations to the applicable Lender
and for all other purposes shall deal directly with the Lenders. No successor
Agent shall be deemed to be appointed hereunder until such successor Agent has
accepted the appointment. Any such successor Agent shall be a commercial bank
having capital and retained earnings of at least $100,000,000. Upon the
acceptance of any appointment as Agent hereunder by a successor Agent, such
successor Agent shall thereupon succeed to and become vested with all the
rights, powers, privileges and duties of the resigning or removed Agent. Upon
the effectiveness of the resignation or removal of the Agent, the resigning or
removed Agent shall be discharged from its duties and obligations hereunder and
under the Facility Documents. After the effectiveness of the resignation or
removal of an Agent, the provisions of this Article XI shall continue in effect
for the benefit of such Agent in respect of any actions taken or omitted to be
taken by it while it was acting as the Agent hereunder and under the other
Facility Documents. In the event that there is a successor to the Agent by
merger, or the Agent assigns its duties and obligations to an Affiliate pursuant
to this Section 11.12, then the term "Corporate Base Rate" as used in this
Agreement shall mean the prime rate, base rate or other analogous rate of the
new Agent.

      11.13. Agents' Fees. The Borrower agrees to pay to the Agent and the
Co-Agent, for their own accounts, the fees agreed to by the Borrower, the Agent
and the Co-Agent pursuant to the Fee Letter.

      11.14. Delegation to Affiliates. The Borrower and the Lenders agree that
the Agent may delegate any of its duties under this Agreement to any of its
Affiliates. Any such Affiliate (and such Affiliate's directors, officers, agents
and employees) which performs duties in connection with this Agreement shall be
entitled to the same benefits of the indemnification, waiver and other
protective provisions to which the Agent is entitled under Articles X and XI.

      11.15. Co-Agent. The Co-Agent shall have no right, power, obligation,
liability, responsibility or duty under this Agreement other than those
applicable to all Lenders as such. Without limiting the foregoing, the Co-Agent
shall not have or be deemed to have a fiduciary relationship with any Lender.
Each Lender hereby makes the same acknowledgments with respect to the Co-Agent
as it makes to the Agent in Section 11.10.


                                      -61-
<PAGE>   72
                                   ARTICLE XII

                            SETOFF; RATABLE PAYMENTS

      12.1. Setoff. In addition to, and without limitation of, any rights of the
Lenders under applicable law, if the Borrower becomes insolvent, however
evidenced, or any Default occurs, any and all deposits (including all account
balances, whether provisional or final and whether or not collected or
available) and any other Indebtedness at any time held or owing by any Lender to
or for the credit or account of the Borrower may be offset and applied toward
the payment of the Obligations owing to such Lender, whether or not the
Obligations, or any part hereof, shall then be due.

      12.2. Ratable Payments. If any Lender, whether by setoff or otherwise, has
payment made to it upon its Revolving Credit Loans or Reimbursement Obligations
(other than payments received pursuant to Section 4.1, 4.2, 4.4 or 4.5) in a
greater proportion than that received by any other Lender, such Lender agrees,
promptly upon demand, to purchase a portion of the Revolving Credit Loans or
participation interests in Letters of Credit, as the case may be, held by the
other Lenders so that after such purchase each Lender will hold its ratable
proportion of such Revolving Credit Loans or participation interests in Letters
of Credit. If any Lender, whether in connection with setoff or amounts which
might be subject to setoff or otherwise, receives collateral or other protection
for its Obligations or such amounts which may be subject to setoff, such Lender
agrees, promptly upon demand, to take such action necessary such that all
Lenders share in the benefits of such collateral ratably in proportion to their
Revolving Credit Loans and Letter of Credit Participation Amounts. In case any
such payment is disturbed by legal process, or otherwise, appropriate further
adjustments shall be made.


                                  ARTICLE XIII

                BENEFIT OF AGREEMENT; ASSIGNMENTS; PARTICIPATIONS

      13.1. Successors and Assigns. The terms and provisions of the Facility
Documents shall be binding upon and inure to the benefit of the Borrower and the
Lenders and their respective successors and assigns, except that (a) the
Borrower shall not have the right to assign its rights or obligations under the
Facility Documents and (b) any assignment by any Lender must be made in
compliance with Section 13.3. Notwithstanding clause (b) of the foregoing
sentence, any Lender may at any time, without the consent of the Borrower or the
Agent, assign all or any portion of its rights under this Agreement and any
Revolving Credit Note to a Federal Reserve Bank; provided, however, that no such
assignment to a Federal Reserve Bank shall release the transferor Lender from
its obligations hereunder. The Agent may treat the Person which made any
Revolving Credit Loan, participated in any Letter of Credit or holds any
Revolving Credit Note as the owner thereof for all purposes hereof unless and
until such Person complies with Section 13.3 in the case of an assignment
thereof or, in the case of any other transfer, a written notice of the transfer
is filed with the Agent. Any assignee or transferee of the rights to any
Revolving Credit Loan, Letter of Credit or Revolving Credit Note


                                      -62-
<PAGE>   73
agrees by acceptance of such transfer or assignment to be bound by all the terms
and provisions of the Facility Documents. Any request, authority or consent of
any Person, who at the time of making such request or giving such authority or
consent is the owner of the rights to any Revolving Credit Loan (whether or not
a Revolving Credit Note has been issued in evidence thereof) or any Letter of
Credit, shall be conclusive and binding on any subsequent holder, transferee or
assignee of the rights to such Revolving Credit Loan or Letter of Credit, as the
case may be.

      13.2. Participations.

            13.2.1. Permitted Participants; Effect. Any Lender may, in the
      ordinary course of its business and in accordance with applicable law, at
      any time sell to one or more banks or other entities ("Participants")
      participating interests in any Revolving Credit Loan owing to such Lender,
      any Revolving Credit Note held by such Lender, any Revolving Credit
      Commitment of such Lender, any interest of such Lender in any Letters of
      Credit or any other interest of such Lender under the Facility Documents.
      In the event of any such sale by a Lender of participating interests to a
      Participant, such Lender's obligations under the Facility Documents shall
      remain unchanged, such Lender shall remain solely responsible to the other
      parties hereto for the performance of such obligations, such Lender shall
      remain the owner of its Revolving Credit Loans and its interest in any
      Letters of Credit and the holder of any Revolving Credit Note issued to it
      in evidence thereof for all purposes under the Facility Documents, all
      amounts payable by the Borrower under this Agreement shall be determined
      as if such Lender had not sold such participating interests, and the
      Borrower and the Agent shall continue to deal solely and directly with
      such Lender in connection with such Lender's rights and obligations under
      the Facility Documents.

            13.2.2. Voting Rights. Each Lender shall retain the sole right to
      approve, without the consent of any Participant, any amendment,
      modification or waiver of any provision of the Facility Documents, except
      to the extent such amendment, modification or waiver would require the
      unanimous consent of the Lenders as described in Section 9.2.

            13.2.3. Benefit of Setoff. The Borrower agrees that each Participant
      shall be deemed to have the right of setoff provided in Section 12.1 in
      respect of its participating interest in amounts owing under the Facility
      Documents to the same extent as if the amount of its participating
      interest were owing directly to it as a Lender under the Facility
      Documents, provided that each Lender shall retain the right of setoff
      provided in Section 12.1 with respect to the amount of participating
      interests sold to each Participant. The Lenders agree to share with each
      Participant, and each Participant, by exercising the right of setoff
      provided in Section 12.1, agrees to share with each Lender, any amount
      received pursuant to the exercise of its right of setoff, such amounts to
      be shared in accordance with Section 12.2 as if each Participant were a
      Lender.

      13.3. Assignments.

            13.3.1. Permitted Assignments. Any Lender may, in the ordinary
      course of its business and in accordance with applicable law, at any time
      assign to one or more banks or


                                      -63-
<PAGE>   74
      other entities ("Purchasers") all or any part of its rights and
      obligations under the Facility Documents. Such assignment shall be
      substantially in the form of Exhibit C or in such other form as may be
      agreed to by the parties thereto. The consent of the Borrower and the
      Agent shall be required prior to an assignment becoming effective with
      respect to a Purchaser which is not a Lender or an Affiliate thereof;
      provided, however, that if a Default has occurred and is continuing, the
      consent of the Borrower shall not be required. Such consent shall not be
      unreasonably withheld or delayed. Each such assignment shall (unless it is
      to a Lender or an Affiliate thereof or the Agent otherwise consents) be in
      an amount not less than the lesser of (a) $5,000,000 or (b) the remaining
      amount of the assigning Lender's Revolving Credit Commitment and/or Letter
      of Credit Participation Amount (calculated as at the date of such
      assignment).

            13.3.2. Effect; Effective Date. Upon (a) delivery to the Agent of a
      notice of assignment, substantially in the form attached as Exhibit I to
      Exhibit C (a "Notice of Assignment"), together with any consents required
      by Section 13.3.1, and (b) payment of a $3,500 fee to the Agent for
      processing such assignment, such assignment shall become effective on the
      effective date specified in such Notice of Assignment. The Notice of
      Assignment shall contain a representation by the Purchaser to the effect
      that none of the consideration used to make the purchase of the Revolving
      Credit Commitment, Revolving Credit Loans and participation interests in
      the Letters of Credit under the applicable assignment agreement are "plan
      assets" as defined under ERISA and that the rights and interests of the
      Purchaser in and under the Facility Documents will not be "plan assets"
      under ERISA. On and after the effective date of such assignment, such
      Purchaser shall for all purposes be a Lender party to this Agreement and
      any other Facility Document executed by or on behalf of the Lenders and
      shall have all the rights and obligations of a Lender under the Facility
      Documents, to the same extent as if it were an original party hereto, and
      no further consent or action by the Borrower, the Lenders or the Agent
      shall be required to release the transferor Lender with respect to the
      percentage of the Aggregate Revolving Credit Commitment, the Letter of
      Credit Commitment, Revolving Credit Loans and the participation interests
      in Letters of Credit assigned to such Purchaser. Upon the consummation of
      any assignment to a Purchaser pursuant to this Section 13.3.2, the
      transferor Lender, the Agent and the Borrower shall, if the transferor
      Lender or the Purchaser desires that its Revolving Credit Loans be
      evidenced by Revolving Credit Notes, make appropriate arrangements so that
      new Revolving Credit Notes or, as appropriate, replacement Revolving
      Credit Notes are issued to such transferor Lender and new Revolving Credit
      Notes or, as appropriate, replacement Revolving Credit Notes, are issued
      to such Purchaser, in each case in principal amounts reflecting their
      respective Revolving Credit Commitments, as adjusted pursuant to such
      assignment.

      13.4. Dissemination of Information. The Borrower authorizes each Lender to
disclose to any Participant or Purchaser or any other Person acquiring an
interest in the Facility Documents by operation of law (each a "Transferee") and
any prospective Transferee any and all information in such Lender's possession
concerning the creditworthiness of the Borrower and its Subsidiaries; provided
that each Transferee and prospective Transferee agrees to be bound by Section
10.11 of this Agreement.


                                      -64-
<PAGE>   75
      13.5. Tax Treatment. If any interest in any Facility Document is
transferred to any Transferee which is organized under the laws of any
jurisdiction other than the United States or any State thereof, the transferor
Lender shall cause such Transferee, concurrently with the effectiveness of such
transfer, to comply with the provisions of Section 4.5(d).

      13.6. Restatement Date Assignments. Contemporaneously with the
effectiveness of this Agreement, (a) First Chicago sells and assigns to each of
Credit Lyonnais New York Branch ("Credit Lyonnais"), Fleet National Bank
("Fleet") and Marine Midland Bank ("Marine Midland"), and each of Credit
Lyonnais, Fleet and Marine Midland purchases and assumes from First Chicago, 24%
of First Chicago's $21,666,667.00 Revolving Credit Commitment and 24% of First
Chicago's $43,333,333.00 Letter of Credit Participation Amount, together with a
corresponding pro-rata interest (the "First Chicago Assigned Interest") in First
Chicago's Revolving Credit Loans, Letter of Credit participations and other
rights and obligations under the Facility Documents, (b) Brown Brothers sells
and assigns to each of Credit Lyonnais, Fleet and Marine Midland, and each of
Credit Lyonnais, Fleet and Marine Midland purchases and assumes from Brown
Brothers, 24% of Brown Brothers' $3,333,333.00 Revolving Credit Commitment and
24% of Brown Brothers' $6,666,667.00 Letter of Credit Participation Amount,
together with a corresponding pro-rata interest (the "Brown Brothers Assigned
Interest") in Brown Brothers' Revolving Credit Loans, Letter of Credit
participations and other rights and obligations under the Facility Documents and
(c) in consideration of such assignment, each of Credit Lyonnais, Fleet and
Marine Midland shall make payment to each of First Chicago and Brown Brothers in
immediately available funds of an amount equal to 24% of the pre-assignment
outstanding amount of First Chicago's Revolving Credit Loans and Brown Brothers'
Revolving Credit Loans, respectively. As a result, upon the effectiveness of
this Agreement and after giving effect to the increase in the Letter of Credit
Commitment as herein provided, the respective Revolving Credit Commitments and
Letter of Credit Participation Amounts of the Lenders shall be as set forth on
Schedule 1 to this Agreement. From and after the effective date of such
assignment (which shall have the effect set forth in Section 13.3.2), all
payments of principal in respect of the Revolving Credit Loans assigned to
Credit Lyonnais, Fleet and Marine Midland shall be paid by the Agent to Credit
Lyonnais, Fleet or Marine Midland, as applicable, and all interest and fees
allocable to the First Chicago Assigned Interest and the Brown Brothers Assigned
Interest shall be paid to First Chicago or Brown Brothers, as applicable, to the
extent relating to the period ending on such effective date, and to Credit
Lyonnais, Fleet or Marine Midland, as applicable, to the extent relating to
periods after such effective date. First Chicago, Brown Brothers, Credit
Lyonnais, Fleet and Marine Midland agree that the provisions of Section 6 and
Section 7(i) through 7(iv) of the form of Assignment Agreement attached hereto
as Exhibit C shall be applicable to the assignments effected hereby.


                                      -65-
<PAGE>   76
                                   ARTICLE XIV

                                     NOTICES


      14.1. Notices. Except as otherwise permitted by Section 2.13 with respect
to borrowing notices, all notices, requests and other communications to any
party hereunder shall be in writing (including electronic transmission,
facsimile transmission or similar writing) and shall be given to such party: (a)
in the case of the Borrower or the Agent, at its address or facsimile number set
forth on the signature pages hereof, (b) in the case of any Lender, at its
address or facsimile number set forth below its signature hereto or (c) in the
case of any party, at such other address or facsimile number as such party may
hereafter specify for the purpose by notice to the Agent and the Borrower in
accordance with the provisions of this Section 14.1. Each such notice, request
or other communication shall be effective (i) if given by facsimile
transmission, when transmitted to the facsimile number specified in this Section
and confirmation of receipt is received, (ii) if given by mail, 72 hours after
such communication is deposited in the mails with first class postage prepaid,
addressed as aforesaid, or (iii) if given by any other means, when delivered
(or, in the case of electronic transmission, received) at the address specified
in this Section; provided that notices to the Agent under Articles II and III
shall not be effective until received.

      14.2. Change of Address. The Borrower, the Agent and any Lender may each
change the address for service of notice upon it by a notice in writing to the
other parties hereto.


                                   ARTICLE XV

                                  COUNTERPARTS


      This Agreement may be executed in any number of counterparts, all of which
taken together shall constitute one agreement, and any of the parties hereto may
execute this Agreement by signing any such counterpart. This Agreement shall be
effective when it has been executed by the Borrower, the Agent and the Lenders
and each party has notified the Agent by facsimile transmission or telephone
that it has taken such action.


                                   ARTICLE XVI

          CHOICE OF LAW; CONSENT TO JURISDICTION; WAIVER OF JURY TRIAL


                                      -66-
<PAGE>   77
      15.1. CHOICE OF LAW. THE LOAN DOCUMENTS (OTHER THAN THOSE CONTAINING A
CONTRARY EXPRESS CHOICE OF LAW PROVISION) SHALL BE CONSTRUED IN ACCORDANCE WITH
THE INTERNAL LAWS (INCLUDING, WITHOUT LIMITATION, 735 ILCS SECTION 105/5-1 ET
SEQ., BUT OTHERWISE WITHOUT REGARD TO THE CONFLICTS OF LAWS PROVISIONS) OF THE
STATE OF ILLINOIS, BUT GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL
BANKS.

      15.2. CONSENT TO JURISDICTION. THE BORROWER HEREBY IRREVOCABLY SUBMITS TO
THE NON-EXCLUSIVE JURISDICTION OF ANY UNITED STATES FEDERAL OR ILLINOIS STATE
COURT SITTING IN CHICAGO, ILLINOIS IN ANY ACTION OR PROCEEDING ARISING OUT OF OR
RELATING TO ANY FACILITY DOCUMENTS AND THE BORROWER HEREBY IRREVOCABLY AGREES
THAT ALL CLAIMS IN RESPECT OF SUCH ACTION OR PROCEEDING MAY BE HEARD AND
DETERMINED IN ANY SUCH COURT AND IRREVOCABLY WAIVES ANY OBJECTION IT MAY NOW OR
HEREAFTER HAVE AS TO THE VENUE OF ANY SUCH SUIT, ACTION OR PROCEEDING BROUGHT IN
SUCH A COURT OR THAT SUCH COURT IS AN INCONVENIENT FORUM. NOTHING HEREIN SHALL
LIMIT THE RIGHT OF THE AGENT OR ANY LENDER TO BRING PROCEEDINGS AGAINST THE
BORROWER IN THE COURTS OF ANY OTHER JURISDICTION. ANY JUDICIAL PROCEEDING BY THE
BORROWER AGAINST THE AGENT OR ANY LENDER OR ANY AFFILIATE OF THE AGENT OR ANY
LENDER INVOLVING, DIRECTLY OR INDIRECTLY, ANY MATTER IN ANY WAY ARISING OUT OF,
RELATED TO, OR CONNECTED WITH ANY FACILITY DOCUMENT SHALL BE BROUGHT ONLY IN A
COURT IN CHICAGO, ILLINOIS.

      15.3. WAIVER OF JURY TRIAL. THE BORROWER, THE AGENT AND EACH LENDER HEREBY
WAIVE TRIAL BY JURY IN ANY JUDICIAL PROCEEDING INVOLVING, DIRECTLY OR
INDIRECTLY, ANY MATTER (WHETHER SOUNDING IN TORT, CONTRACT OR OTHERWISE) IN ANY
WAY ARISING OUT OF, RELATED TO, OR CONNECTED WITH ANY FACILITY DOCUMENT OR THE
RELATIONSHIP ESTABLISHED THEREUNDER.


                           [signature pages follow]


                                      -67-
<PAGE>   78
      IN WITNESS WHEREOF, the Borrower, the Lenders and the Agent have executed
this Agreement as of the date first above written.


                                    THE NAVIGATORS GROUP, INC.


                                    By:______________________________________
                                    Print Name:______________________________

                                    Title:___________________________________

                                    Address:_________________________________
                                            _________________________________
                                            Attn:____________________________

                                            Telephone:_______________________
                                            Fax:_____________________________


                                       S-1
                              [TO CREDIT AGREEMENT]
<PAGE>   79
                                    THE FIRST NATIONAL BANK OF CHICAGO,
                                    Individually and as Agent

                                    By:
                                       --------------------------------------

                                    Print Name:Samuel W. Bridges
                                               ------------------------------

                                    Title:First Vice President
                                          -----------------------------------

                                    Address: One First National Plaza
                                             Chicago, Illinois 60670
                                             Attn: Lillian Arroyo

                                             Telephone:  (312) 732-2279
                                             Fax: (312) 732-3246


                                    With copies to:

                                    The First National Bank of Chicago
                                    153 West 51st Street
                                    New York, New York  10019
                                    Attn:  Samuel W. Bridges
                                    Telephone:  (212) 373-1142
                                    Fax:  (212) 373-1439

                                    The First National Bank of Chicago
                                    One First National Plaza, Suite 0085
                                    Chicago, Illinois 60670
                                    Attn: T. Luisa Pashinian
                                    Telephone: (312) 732-2749
                                    Fax: (312) 642-7815



                                       S-2
                              [TO CREDIT AGREEMENT]
<PAGE>   80
                                    per pro BROWN BROTHERS HARRIMAN & CO.,
                                    Individually and as Co-Agent

                                    By:_______________________________________

                                    Print Name:_______________________________

                                    Title:____________________________________

                                    Address:  59 Wall Street
                                              New York, New York 10005
                                              Attn:  Chief Credit Officer

                                              Telephone: (212) 483-1818
                                              Fax: (212) 493-7208


                                       S-3
                              [TO CREDIT AGREEMENT]
<PAGE>   81
                                    CREDIT LYONNAIS NEW YORK BRANCH,
                                    Individually

                                    By:_______________________________________

                                    Print Name:_______________________________

                                    Title:____________________________________

                                    Address:__________________________________
                                            __________________________________
                                            __________________________________
                                            Telephone: (___) ___-____
                                            Fax: (___) ___-____


                                       S-4
                              [TO CREDIT AGREEMENT]
<PAGE>   82
                                   FLEET NATIONAL BANK, Individually


                                    By:_______________________________________

                                    Print Name:_______________________________

                                    Title:____________________________________

                                    Address:__________________________________
                                            __________________________________
                                            __________________________________
                                            Telephone: (___) ___-____
                                            Fax: (___) ___-____


                                       S-5
                              [TO CREDIT AGREEMENT]
<PAGE>   83
                                    MARINE MIDLAND BANK, Individually


                                    By:_______________________________________

                                    Print Name:_______________________________

                                    Title:____________________________________

                                    Address:__________________________________
                                            __________________________________
                                            __________________________________
                                            Telephone: (___) ___-____
                                            Fax: (___) ___-____


                                       S-6
                              [TO CREDIT AGREEMENT]
<PAGE>   84
                                PRICING SCHEDULE


<TABLE>
<CAPTION>
    APPLICABLE          LEVEL I        LEVEL II        LEVEL III        LEVEL IV
      MARGIN            STATUS          STATUS          STATUS           STATUS
- - ---------------------------------------------------------------------------------
<S>                     <C>            <C>             <C>              <C>
 Eurodollar Rate         0.75%          0.875%           1.00%           1.25%
=================================================================================
</TABLE>


<TABLE>
<CAPTION>
- - ---------------------------------------------------------------------------------
  APPLICABLE FEE        LEVEL I        LEVEL II        LEVEL III       LEVEL IV
       RATE             STATUS          STATUS          STATUS          STATUS
- - ---------------------------------------------------------------------------------
<S>                     <C>             <C>              <C>             <C>
  Commitment Fee        0.125%          0.125%           0.15%           0.25%
 Letter of Credit
Participation Fee        0.75%          0.875%           1.00%           1.25%
=================================================================================
</TABLE>

      For the purposes of this Schedule, the following terms have the following
meanings, subject to the final paragraph of this Schedule:

      "Level I Status" exists at any date if, on such date, the Borrower has an
S&P Debt Rating of A- or better or, if the Borrower does not have an S&P Debt
Rating, each of Navigators and each other Significant Insurance Subsidiary of
the Borrower shall have an S&P Financial Strength Rating of A+ or better.

      "Level II Status" exists at any date if, on such date, the Borrower has
not qualified for Level I Status, and the Borrower has an S&P Debt Rating of BBB
or better or, if the Borrower does not have an S&P Debt Rating, each of
Navigators and each other Significant Insurance Subsidiary of the Borrower shall
have an S&P Financial Strength Rating of A or better.

      "Level III Status" exists at any date if, on such date, the Borrower has
not qualified for Level I Status or Level II Status, and the Borrower has an S&P
Debt Rating of BBB- or better or, if the Borrower does not have an S&P Debt
Rating, each of Navigators and each other Significant Insurance Subsidiary of
the Borrower shall have an S&P Financial Strength Rating of A- or better.

      "Level IV Status" exists at any date if, on such date, the Borrower has
not qualified for Level I Status, Level II Status or Level III Status.

      "S&P" means Standard and Poor's Rating Services, a division of The McGraw
Hill Companies, Inc.

      "S&P Debt Rating" means, at any time, the rating issued by S&P with
respect to the Borrower's senior unsecured and unguaranteed long-term debt.


                                      PS-1
<PAGE>   85
      "S&P Financial Strength Rating" means, at any time, the rating issued by
S&P with respect to the financial strength of Navigators and each other
Significant Insurance Subsidiary of the Borrower.

      "Status" means either Level I Status, Level II Status, Level III Status or
Level IV Status.

      The Applicable Margin, the Applicable Commitment Fee Rate and the
Applicable Letter of Credit Participation Fee Rate shall be determined in
accordance with the foregoing table based on the Borrower's Status as determined
from its then-current S&P Debt Rating or, if the Borrower does not have an S&P
Debt Rating, the then-current S&P Financial Strength Rating of Navigators and
each other Significant Insurance Subsidiary of the Borrower. The credit rating
in effect on any date for the purposes of this Schedule is that in effect at the
close of business on such date. If at any time the Borrower has no S&P Debt
Rating and no Significant Insurance Subsidiary of the Borrower has an S&P
Financial Strength Rating, Level IV Status shall exist.


                                      PS-2
<PAGE>   86
                                   SCHEDULE 1

                                   COMMITMENTS

<TABLE>
<CAPTION>
                                         Revolving Credit      Letter of Credit
           Lender                           Commitment            Commitment
           ------                           ----------            ----------
<S>                                      <C>                   <C>
The First National Bank of Chicago         $6,176,470.58         $14,823,529.42
Brown Brothers Harriman & Co.              $2,941,176.47         $ 7,058,823.53
Credit Lyonnais New York Branch            $5,294,117.65         $12,705,882.35
Fleet National Bank                        $5,294,117.65         $12,705,882.35
Marine Midland Bank                        $5,294,117.65         $12,705,882.35
</TABLE>


                                      PS-3
<PAGE>   87
                                    EXHIBIT A

                              REVOLVING CREDIT NOTE


$____________________                                          December 21, 1998


      The Navigators Group, Inc., a Delaware corporation (the "Borrower"),
promises to pay to the order of ____________________________________ (the
"Lender") the lesser of the principal sum of ____________________ Dollars
($________) or the aggregate unpaid principal amount of all Revolving Credit
Loans made by the Lender to the Borrower pursuant to Article II of the Agreement
(as hereinafter defined), in immediately available funds at the main office of
The First National Bank of Chicago in Chicago, Illinois, as Agent, together with
interest on the unpaid principal amount hereof at the rates and on the dates set
forth in the Agreement. The Borrower shall pay the principal of and accrued and
unpaid interest on the Revolving Credit Loans in full on the Revolving Credit
Termination Date and shall make such mandatory payments as are required to be
made under the terms of Article II of the Agreement.

      The Lender shall, and is hereby authorized to, record on the schedule
attached hereto, or to otherwise record in accordance with its usual practice,
the date and amount of each Revolving Credit Loan and the date and amount of
each principal payment hereunder.

      This Revolving Credit Note is one of the Revolving Credit Notes issued
pursuant to, and is entitled to the benefits of, the Credit Agreement, dated as
of November 20, 1998 and amended and restated as of December 21, 1998 (which, as
it may be amended or modified and in effect from time to time, is herein called
the "Agreement"), among the Borrower, the lenders party thereto, including the
Lender, The First National Bank of Chicago, as Agent, and Brown Brothers
Harriman & Co., as Co-Agent, to which Agreement reference is hereby made for a
statement of the terms and conditions governing this Revolving Credit Note,
including the terms and conditions under which this Revolving Credit Note may be
prepaid or its maturity date accelerated. This Revolving Credit Note is secured
pursuant to the Security Documents, as more specifically described in the
Agreement, and reference is made thereto for a statement of the terms and
provisions thereof. Capitalized terms used herein and not otherwise defined
herein are used with the meanings attributed to them in the Agreement.

      This Note shall be governed by, and construed in accordance with, the
internal laws (and not the law of conflicts) of the State of Illinois.

                           THE NAVIGATORS GROUP, INC.


                                    By:_______________________________________
                                    Print Name:_______________________________


                                      A-1
<PAGE>   88
                                    Title:____________________________________


                                       A-2
<PAGE>   89
                SCHEDULE OF LOANS AND PAYMENTS OF PRINCIPAL
                                      TO
             REVOLVING CREDIT NOTE OF THE NAVIGATORS GROUP, INC.,
                            DATED DECEMBER 21, 1998


<TABLE>
<CAPTION>
                    Principal        Maturity        Principal
                    Amount of      of Interest        Amount          Unpaid
      Date            Loan            Period           Paid           Balance
      ----            ----            ------           ----           -------
<S>                 <C>            <C>               <C>              <C>

</TABLE>


                                       A-3
<PAGE>   90
                                    EXHIBIT B

                             COMPLIANCE CERTIFICATE


To:   The Lenders parties to the
      Credit Agreement Described Below

      This Compliance Certificate is furnished pursuant to that certain Credit
Agreement, dated as of November 20, 1998 and amended and restated as of December
21, 1998 (as amended, modified, renewed or extended from time to time, the
"Agreement"), among The Navigators Group, Inc. (the "Borrower"), the lenders
party thereto, The First National Bank of Chicago, as Agent for the Lenders, and
Brown Brothers Harriman & Co., as Co-Agent. Unless otherwise defined herein,
capitalized terms used in this Compliance Certificate have the meanings ascribed
thereto in the Agreement.

      THE UNDERSIGNED HEREBY CERTIFIES THAT:

      1. I am the duly elected ______________ of the Borrower;

      2. I have reviewed the terms of the Agreement and I have made, or have
caused to be made under my supervision, a detailed review of the transactions
and conditions of the Borrower and its Subsidiaries during the accounting period
covered by the attached financial statements;

      3. The examinations described in paragraph 2 did not disclose, and I have
no knowledge of, the existence of any condition or event which constitutes a
Default or Unmatured Default during or at the end of the accounting period
covered by the attached financial statements or as of the date of this
Certificate, except as set forth below; and

      4. Schedule I attached hereto sets forth financial data and computations
evidencing the Borrower's compliance with certain covenants of the Agreement,
all of which data and computations are true, complete and correct.

      Described below are the exceptions, if any, to paragraph 3 by listing, in
detail, the nature of the condition or event, the period during which it has
existed and the action which the Borrower has taken, is taking, or proposes to
take with respect to each such condition or event:


                                       B-1
<PAGE>   91
      The foregoing certifications, together with the computations set forth in
Schedule I hereto and the financial statements delivered with this Certificate
in support hereof, are made and delivered this ___ day of_______ ,___ .


                                          _____________________________________


                                       B-2
<PAGE>   92
                      SCHEDULE I TO COMPLIANCE CERTIFICATE

                      Compliance as of _________, ____ with
                     Provisions of Sections 7.14 and 7.24 of
                                  the Agreement


Section 7.14 - Investments and Acquisitions

<TABLE>
<S>                                                                 <C>
1.    Clause (d)

      (a)   Required:

            (i)   Combined Investments of the Borrower and its
                  Subsidiaries on the date of determination:        $
                                                                    ----------

            (ii)  10% of (a)(i):                                    $
                                                                    ==========

      (b)   Actual:

            Investments in debt securities not rated A-
            or better by S&P, A-3 or better by Moody's
            or NAIC-1 or better by the NAIC but rated
            BBB- or better by S&P, Baa-3 or better by
            Moody's or NAIC-2 or better by the NAIC on
            the date of determination (or downgraded
            from such ratings with the last 180 days):              $
                                                                    ==========

2.    Clause (e)

      (a)   Aggregate Investments:

            (i)   Required:

                  (A)   Consolidated Net Worth of the
                        Borrower and its Subsidiaries on
                        the date of determination:                  $
                                                                    ----------

                  (B)   10% of (a)(i)(A):                           $
                                                                    ==========

            (ii)  Actual:

                  Investments by the Borrower in equity
                  securities on the date of determination:          $
                                                                    ==========
</TABLE>


                                       B-3
<PAGE>   93
<TABLE>
<S>                                                                 <C>
      (b)   Individual Investments:

            (i)   Required:

                  (A)   Consolidated Net Worth of the
                        Borrower and its Subsidiaries on
                        the date of determination:                  $
                                                                    ----------

                  (B)   5% of (b)(i)(A):                            $
                                                                    ==========

            (ii) Actual:

                  Largest single investment by the
                  Borrower and its Subsidiaries on the date
                  of determination:                                 $
                                                                    ==========

3.    Clause (f)

      (a)   Required:

            Aggregate amount of other Investments permitted
            under Section 7.14(f):                                  $5,000,000
                                                                    ==========

      (b)   Actual:

            Other Investments on date of determination:             $
                                                                    ==========

4.    Clause (g)

      (a)   Required:

            Aggregate amount of Acquisitions permitted during
            any Fiscal Year:                                        $5,000,000
                                                                    ==========

      (b)   Actual:

            Amount of Acquisitions from beginning of Fiscal
            Year through date of determination:                     $
                                                                    ==========
</TABLE>


                                       B-4
<PAGE>   94
Section 7.24.1 - Minimum Consolidated Tangible Net Worth

PeriodFiscal Quarter ended _______________, _____

<TABLE>
<S>                                                                 <C>
1.    Required:

      (a)   Positive Consolidated Net Income earned in
            each Fiscal Quarter from Fiscal Quarter ended
            September 30, 1998 through Fiscal Quarter
            ended on date of determination:                         $
                                                                    ----------

      (b)   75% of (a):                                             $
                                                                    ----------

      (c)   Net Available Proceeds of any equity issuance
            after November 20, 1998 (including any capital
            contribution to surplus of the Borrower in respect
            of which no additional shares are issued):              $
                                                                    ----------

      (d)   75% of (c):                                             $
                                                                    ----------

      (e)   $110,729,000 plus (b) plus (d):                         $
                                                                    ==========

2.    Actual:

       Consolidated Tangible Net Worth (excluding the effect of
       unrealized gain or loss under FAS 115):                      $
                                                                    ==========
</TABLE>


                                       B-5
<PAGE>   95
Section 7.24.2 - Minimum Statutory Surplus

PeriodFiscal Quarter ended _______________, _____

<TABLE>
<S>                                                                 <C>
1.    Required:

      (a)   Positive aggregate Statutory Surplus earned by
            Significant Insurance Subsidiaries in each
            Fiscal Quarter from Fiscal Quarter ended
            September 30, 1998 through Fiscal Quarter ended
            on date of determination:                               $
                                                                    ----------

      (b)   50% of (a):                                             $
                                                                    ----------

      (c)   Net Available Proceeds of any equity issuance
            by any Significant Insurance Subsidiary after
            November 20, 1998 (including any capital
            contribution to surplus of the Significant
            Insurance Subsidiaries in respect of which no
            additional shares are issued):                          $
                                                                    ----------

      (d)   75% of (c):                                             $
                                                                    ----------

      (e)   $106,833,000 plus (b) plus (d):                         $
                                                                    ==========

2.    Actual:

      Aggregate Statutory Surplus of the Significant
      Insurance Subsidiaries:                                       $
                                                                    ==========
</TABLE>


                                      B-6
<PAGE>   96
Section 7.24.3 - Leverage Ratio

<TABLE>
<S>                                                                 <C>
1.    Required:                                                       0.25:1.0
                                                                    ----------
2.    Actual:

      (a)   Consolidated Indebtedness of the Borrower
            and its Consolidated Subsidiaries (excluding
            letter of credit obligations incurred in the
            ordinary course of business) on date of
            determination:                                          $
                                                                    ----------

      (b)   Consolidated Net Worth on date of determination:        $
                                                                    ----------

      (c)   (a) plus (b):                                           $
                                                                    ----------

      (d)   Ratio of (a) to (c):                                          :1.0
                                                                    ----------

Section 7.24.4 - Minimum Risk-Based Capital

1.    Required:                                                           150%
                                                                    ==========

2.    Actual:

      (a)   Total Adjusted Capital on date of determination:        $
                                                                    ----------

      (b)   Company Action Level RBC on date of determination:      $
                                                                    ----------

      (c)   Ratio of (a) to (b) (expressed as a percentage):                  %
                                                                    ==========
</TABLE>


                                       B-7
<PAGE>   97
                                    EXHIBIT C

                              ASSIGNMENT AGREEMENT

      This Assignment Agreement (this "Assignment Agreement") between       (the
"Assignor") and           (the "Assignee") is dated as of         ,       . The
parties hereto agree as follows:

      1. PRELIMINARY STATEMENT. The Assignor is a party to a Credit Agreement
(which, as it may be amended, modified, renewed or extended from time to time is
herein called the "Credit Agreement") described in Item 1 of Schedule 1 attached
hereto ("Schedule 1"). Capitalized terms used herein and not otherwise defined
herein shall have the meanings attributed to them in the Credit Agreement.

      2. ASSIGNMENT AND ASSUMPTION. The Assignor hereby sells and assigns to the
Assignee, and the Assignee hereby purchases and assumes from the Assignor, an
interest in and to the Assignor's rights and obligations under the Credit
Agreement such that after giving effect to such assignment the Assignee shall
have purchased pursuant to this Assignment Agreement the percentage interest
specified in Item 3 of Schedule 1 of all outstanding rights and obligations
under the Credit Agreement relating to the loans listed in Item 3 of Schedule 1
and the other Facility Documents. The total of the Revolving Credit Commitment
and the Letter of Credit Participation Amount purchased by the Assignee
hereunder is set forth in Item 4 of Schedule 1.

      3. EFFECTIVE DATE. The effective date of this Assignment Agreement (the
"Effective Date") shall be the later of the date specified in Item 5 of Schedule
1 or two Business Days (or such shorter period agreed to by the Agent) after a
Notice of Assignment substantially in the form of Exhibit I attached hereto has
been delivered to the Agent. Such Notice of Assignment must include any consents
required to be delivered to the Agent by Section 13.3.1 of the Credit Agreement.
In no event will the Effective Date occur if the payments required to be made by
the Assignee to the Assignor on the Effective Date under Sections 4 and 5 hereof
are not made on the proposed Effective Date or if any other condition precedent
agreed to by the Assignor and the Assignee has not been satisfied. The Assignor
will notify the Assignee of the proposed Effective Date no later than the
Business Day prior to the proposed Effective Date. As of the Effective Date, (i)
the Assignee shall have the rights and obligations of a Lender under the
Facility Documents with respect to the rights and obligations assigned to the
Assignee hereunder and (ii) the Assignor shall relinquish its rights and be
released from its corresponding obligations under the Facility Documents with
respect to the rights and obligations assigned to the Assignee hereunder.

      4. PAYMENT OBLIGATIONS. On and after the Effective Date, the Assignee
shall be entitled to receive from the Agent all payments of principal, interest
and fees with respect to the interest assigned hereby. The Assignee shall
advance funds directly to the Agent with respect to all Revolving Credit Loans
and reimbursement payments made on or after the Effective Date with respect to
the interest assigned hereby. In the event that either party hereto receives any
payment to


                                      C-1
<PAGE>   98
which the other party hereto is entitled under this Assignment Agreement, then
the party receiving such amount shall promptly remit it to the other party
hereto.

      5. FEES PAYABLE BY THE ASSIGNEE. The Assignee shall pay to the Assignor a
fee on each day on which a payment of interest or fees is made under the Credit
Agreement with respect to the amounts assigned to the Assignee hereunder (other
than a payment of interest or fees for the period prior to the Effective Date)
or, in the case of Eurodollar Loans, the Payment Date, which the Assignee is
obligated to deliver to the Assignor pursuant to Section 4 hereof. The amount of
such fee shall be the difference between (i) the interest or fee, as applicable,
paid with respect to the amounts assigned to the Assignee hereunder and (ii) the
interest or fee, as applicable, which would have been paid with respect to the
amounts assigned to the Assignee hereunder if each interest rate was of 1% less
than the interest rate paid by the Borrower or if the commitment fee was of 1%
less than the commitment fee paid by the Borrower, as applicable. In addition,
the Assignee agrees to pay the $3,500 processing fee required to be paid to the
Agent in connection with this Assignment Agreement.

      6.  REPRESENTATIONS OF THE ASSIGNOR; LIMITATIONS ON THE ASSIGNOR'S
LIABILITY. The Assignor represents and warrants that it is the legal and
beneficial owner of the interest being assigned by it hereunder and that such
interest is free and clear of any adverse claim created by the Assignor. It is
understood and agreed that the assignment and assumption hereunder are made
without recourse to the Assignor and that the Assignor makes no other
representation or warranty of any kind to the Assignee. Neither the Assignor nor
any of its officers, directors, employees, agents or attorneys shall be
responsible for (i) the due execution, legality, validity, enforceability,
genuineness, sufficiency or collectability of any Facility Document, including
without limitation, documents granting the Assignor and the other Lenders a
security interest in assets of the Borrower or any guarantor, (ii) any
representation, warranty or statement made in any Facility Document or in
connection with any of the Facility Documents, (iii) the financial condition or
creditworthiness of the Borrower or any guarantor, (iv) the performance of or
compliance with any of the terms or provisions of any of the Facility Documents,
(v) inspecting any of the Property, books or records of the Borrower, (vi) the
validity, enforceability, perfection, priority, condition, value or sufficiency
of any collateral securing or purporting to secure the Revolving Credit Loans or
the Reimbursement Obligations or (vii) any mistake, error of judgment, or action
taken or omitted to be taken in connection with the Revolving Credit Loans, the
Letters of Credit or the Facility Documents.

      7. REPRESENTATIONS OF THE ASSIGNEE. The Assignee (i) confirms that it has
received a copy of the Credit Agreement, together with copies of the financial
statements requested by the Assignee and such other documents and information as
it has deemed appropriate to make its own credit analysis and decision to enter
into this Assignment Agreement, (ii) agrees that it will, independently and
without reliance upon the Agent, the Assignor or any other Lender and based on
such documents and information at it shall deem appropriate at the time,
continue to make its own credit decisions in taking or not taking action under
the Facility Documents, (iii) appoints and authorizes the Agent to take such
action as agent on its behalf and to exercise such powers under the Facility
Documents as are delegated to the Agent by the terms thereof, together with such
powers


                                      C-2
<PAGE>   99
as are reasonably incidental thereto, (iv) agrees that it will perform in
accordance with their terms all of the obligations which by the terms of the
Facility Documents are required to be performed by it as a Lender, (v) agrees
that its payment instructions and notice instructions are as set forth in the
attachment to Schedule 1, (vi) confirms that none of the funds, monies, assets
or other consideration being used to make the purchase and assumption hereunder
are "plan assets" as defined under ERISA and that its rights, benefits and
interests in and under the Facility Documents will not be "plan assets" under
ERISA, [and (vii) attaches the forms prescribed by the Internal Revenue Service
of the United States certifying that the Assignee is entitled to receive
payments under the Facility Documents without deduction or withholding of any
United States federal income taxes].

      8. INDEMNITY. The Assignee agrees to indemnify and hold the Assignor
harmless against any and all losses, costs and expenses (including, without
limitation, reasonable attorneys' fees) and liabilities incurred by the Assignor
in connection with or arising in any manner from the Assignee's non-performance
of the obligations assumed under this Assignment Agreement.

      9. SUBSEQUENT ASSIGNMENTS. After the Effective Date, the Assignee shall
have the right pursuant to Section 13.3.1 of the Credit Agreement to assign the
rights which are assigned to the Assignee hereunder to any entity or person,
provided that (i) any such subsequent assignment does not violate any of the
terms and conditions of the Facility Documents or any law, rule, regulation,
order, writ, judgment, injunction or decree and that any consent required under
the terms of the Facility Documents has been obtained and (ii) unless the prior
written consent of the Assignor is obtained, the Assignee is not thereby
released from its obligations to the Assignor hereunder, if any remain
unsatisfied, including, without limitation, its obligations under Sections 4, 5
and 8 hereof.

      10. REDUCTIONS OF AGGREGATE COMMITMENT. If any reduction in the Aggregate
Revolving Credit Commitment or the Letter of Credit Commitment occurs between
the date of this Assignment Agreement and the Effective Date, the percentage
interest specified in Item 3 of Schedule 1 shall remain the same, but the dollar
amount purchased shall be recalculated based on the reduced Aggregate Revolving
Credit Commitment or Letter of Credit Commitment, as the case may be.

      11. ENTIRE AGREEMENT. This Assignment Agreement and the attached Notice of
Assignment embody the entire agreement and understanding between the parties
hereto and supersede all prior agreements and understandings between the parties
hereto relating to the subject matter hereof.

      12. GOVERNING LAW. This Assignment Agreement shall be governed by the
internal law, and not the law of conflicts, of the State of Illinois.

      13. NOTICES. Notices shall be given under this Assignment Agreement in the
manner set forth in the Credit Agreement. For the purpose hereof, the addresses
of the parties hereto (until notice of a change is delivered) shall be the
address set forth in the attachment to Schedule 1.

                            [signature page follows]


                                     C-3
<PAGE>   100
      IN WITNESS WHEREOF, the parties hereto have executed this Assignment
Agreement by their duly authorized officers as of the date first above written.

                                     [NAME OF ASSIGNOR]


                                     By: _____________________________________

                                     Title: __________________________________

                                     Address: ________________________________
                                             _________________________________
                                                           ___________________

                                     [NAME OF ASSIGNEE]


                                     By: _____________________________________

                                     Title: __________________________________

                                     Address: ________________________________
                                              ________________________________
                                              ________________________________


                                       C-4
<PAGE>   101
                                   SCHEDULE 1

                             TO ASSIGNMENT AGREEMENT


1.   Description and Date of Credit Agreement:

     That certain Credit Agreement, dated as of November 20, 1998 and amended
     and restated as of December 21, 1998, among The Navigators Group, Inc., the
     financial institutions named therein, The First National Bank of Chicago,
     as Agent, and Brown Brothers Harriman & Co., as Co-agent.

2.    Date of Assignment Agreement:_____________,____

3.    Amounts (As of Date of Item 2 above):

<TABLE>
<CAPTION>
                                                               Revolving Credit   Letter of Credit
                                                                   Facility          Facility
<S>                                                            <C>                <C>
     (a)   Aggregate Revolving Credit Commitment
           (total Revolving Credit Loans)* and Letter
           of Credit Commitment (total outstanding
           Letter of Credit Obligations)** under Credit
           Agreement:                                              $_______        $_______

     (b)   Assignee's Percentage of each Facility
           purchased under the Assignment Agreement                 _______%        _______%
           (taken to five decimal places):

     (c)   Amount of Assigned Share in each Facility
           purchased under the Assignment                          $_______        $_______
           Agreement:

4.   Total of Assignee's Revolving Credit Commitment
     (Revolving Credit Loan amount)* and Letter of
     Credit Participation Amount (outstanding Letter of
     Credit Obligations)** purchased hereunder:                    $_______

5.   Proposed Effective Date:                                                      ______, _____
</TABLE>


                                       C-5
<PAGE>   102
      Accepted and Agreed:

      [NAME OF ASSIGNOR]            [NAME OF ASSIGNEE]

      By:____________________       By:_________________________
      Title:_________________       Title:______________________



 *    If the Aggregate Revolving Credit Commitment has been terminated, insert
      outstanding Revolving Credit Loans in place of Aggregate Revolving Credit
      Commitment or Revolving Credit Commitment, as the case may be.

**    If the Letter of Credit Commitment has been terminated, insert total
      outstanding Letter of Credit Obligations in place of Letter of Credit
      Commitment or Letter of Credit Participation Amount, as the case may be.


                                       C-6
<PAGE>   103
                ATTACHMENT TO SCHEDULE 1 to ASSIGNMENT AGREEMENT

                        ADMINISTRATIVE INFORMATION SHEET

         Attach Assignor's Administrative Information Sheet, which must
           include notice addresses for the Assignor and the Assignee
                            (Sample form shown below)

                              ASSIGNOR INFORMATION

CONTACT:

Name:_____________________________    Telephone No.:__________________________
Fax No.:__________________________    Telex No.:______________________________
                                      Answerback:_____________________________

PAYMENT INFORMATION:

Name & ABA # of Destination Bank:___________________________________


Account Name & Number for Wire Transfer:________________________________________


Other Instructions:_____________________________________________________________


ADDRESS FOR NOTICES FOR ASSIGNEE:_______________________________________________



                              ASSIGNEE INFORMATION

CREDIT CONTACT:

Name:_____________________________    Telephone No.:__________________________
Fax No.:__________________________    Telex No.:______________________________
                                      Answerback:_____________________________


                                       C-7
<PAGE>   104
KEY OPERATIONS CONTACTS:

Booking Installation:______________   Booking Installation:___________________
Name:______________________________   Name:___________________________________
Telephone No.:_____________________   Telephone No.:__________________________
Fax No.:___________________________   Fax No.:________________________________
Telex No.:_________________________   Telex No.:______________________________
Answerback:________________________   Answerback:_____________________________

PAYMENT INFORMATION:

Name & ABA # of Destination Bank:_________________________________________


Account Name & Number for Wire Transfer:________________________________________


Other Instructions:_____________________________________________________________


ADDRESS FOR NOTICES FOR ASSIGNOR:_______________________________________________


                                       C-8
<PAGE>   105
                                FNBC INFORMATION

    Assignee will be called promptly upon receipt of the signed agreement.

INITIAL FUNDING CONTACT:              SUBSEQUENT OPERATIONS CONTACT:

Name: Lillian Arroyo                  Name: Mark Cochrane
Telephone No.:  (312) 732-2279        Telephone No.:  (312) 732-1471
Fax No.:  (312) 732-3246              Fax No.: (312) 732-3246



INITIAL FUNDING STANDARDS:

Libor - Fund 2 days after rates are set.

FNBC WIRE INSTRUCTIONS         The First National Bank of
                               Chicago, ABA # 071000013 BNF = 7521-7653/DES,
                               Ref:______________

ADDRESS FOR NOTICES FOR FNBC:  One First National Plaza, Chicago, IL  60670
                               Attn: Agency/Compliance Division, Suite 0353
                               Fax No. (312) 732-2038 or (312) 732-4339


                                       C-9
<PAGE>   106
                                    EXHIBIT I

                             TO ASSIGNMENT AGREEMENT

                                     NOTICE
                                  OF ASSIGNMENT


                                                            ____________,____


To:        The Navigators Group, Inc.
           123 William Street
           New York, New York  10038

           The First National Bank of Chicago, as Agent
           One First National Plaza
           Chicago, Illinois 60670

From:      [NAME OF ASSIGNOR] (the "Assignor")

           [NAME OF ASSIGNEE] (the "Assignee")


      1. We refer to that certain Credit Agreement (the "Credit Agreement")
described in Item 1 of Schedule 1 attached hereto ("Schedule 1"). Capitalized
terms used herein and not otherwise defined herein shall have the meanings
attributed to them in the Credit Agreement.

      2. This Notice of Assignment (this "Notice of Assignment") is given and
delivered to [the Borrower and] the Agent pursuant to Section 13.3.2 of the
Credit Agreement.

      3. The Assignor and the Assignee have entered into an Assignment
Agreement, dated as of __________, ____ (the "Assignment Agreement"), pursuant
to which, among other things, the Assignor has sold, assigned, delegated and
transferred to the Assignee, and the Assignee has purchased, accepted and
assumed from the Assignor the percentage interest specified in Item 3 of
Schedule 1 of all outstandings, rights and obligations under the Credit
Agreement relating to the facilities listed in Item 3 of Schedule 1. The
Effective Date of the Assignment Agreement shall be the later of the date
specified in Item 5 of Schedule 1 or two Business Days (or such shorter period
as agreed to by the Agent) after this Notice of Assignment and any consents and
fees required by Sections 13.3.1 and 13.3.2 of the Credit Agreement have been
delivered to the Agent; provided that the Effective Date shall not occur if any
condition precedent agreed to by the Assignor and the Assignee has not been
satisfied.


                                      C-10
<PAGE>   107
      4. The Assignor and the Assignee hereby give to the Borrower and the Agent
notice of the assignment and delegation referred to herein. The Assignor will
confer with the Agent before the date specified in Item 5 of Schedule 1 to
determine if the Assignment Agreement will become effective on such date
pursuant to Section 3 hereof, and will confer with the Agent to determine the
Effective Date pursuant to Section 3 hereof if it occurs thereafter. The
Assignor shall notify the Agent if the Assignment Agreement does not become
effective on any proposed Effective Date as a result of the failure to satisfy
the conditions precedent agreed to by the Assignor and the Assignee. At the
request of the Agent, the Assignor will give the Agent written confirmation of
the satisfaction of the conditions precedent.

      5. The Assignor or the Assignee shall pay to the Agent on or before the
Effective Date the processing fee of $3,500 required by Section 13.3.2 of the
Credit Agreement.

      6. If Revolving Credit Notes are outstanding on the Effective Date, the
Assignor and the Assignee request and direct that the Agent prepare and cause
the Borrower to execute and deliver new Revolving Credit Notes or, as
appropriate, replacement notes, to the Assignor and the Assignee. The Assignor
and, if applicable, the Assignee each agree to deliver to the Agent the original
Revolving Credit Note received by it from the Borrower upon its receipt of a new
Revolving Credit Note in the appropriate amount.

      7. The Assignee advises the Agent that notice and payment instructions are
set forth in the attachment to Schedule 1.

      8. The Assignee hereby represents and warrants that none of the funds,
monies, assets or other consideration being used to make the purchase pursuant
to the Assignment Agreement are "plan assets" as defined under ERISA and that
its rights, benefits, and interests in and under the Facility Documents will not
be "plan assets" under ERISA.

      9. The Assignee authorizes the Agent to act as its agent under the
Facility Documents in accordance with the terms thereof. The Assignee
acknowledges that the Agent has no duty to supply information with respect to
the Borrower or the Facility Documents to the Assignee until the Assignee
becomes a party to the Credit Agreement.

[NAME OF ASSIGNOR]                           [NAME OF ASSIGNEE]


By:___________________________               By:_______________________________

Title:________________________               Title:____________________________


                                      C-11
<PAGE>   108
ACKNOWLEDGED AND CONSENTED TO         ACKNOWLEDGED AND CONSENTED TO
BY THE FIRST NATIONAL BANK            BY THE NAVIGATORS GROUP, INC.
OF CHICAGO, as Agent


By:___________________________        By:_______________________________

Title:________________________        Title:____________________________

            [Attach photocopy of Schedule 1 to Assignment Agreement]


                                      C-12

<PAGE>   1
                                                                   EXHIBIT 10-15

                              EMPLOYMENT AGREEMENT


      EMPLOYMENT AGREEMENT ("Agreement") entered into and effective as of this
1st day of March, 1999, by and between SOMERSET MARINE, INC. ("Employer"), a New
York corporation with its principal place of business in New York, New York and
Salvatore A. Margarita (the "Executive").

                                    RECITALS

      WHEREAS, Employer desires to retain and employ the services of Executive
as Vice President of Employer; and

      WHEREAS, Executive has been employed by Employer for 15 years; and

      WHEREAS, the parties hereto wish to provide herein for the terms and
conditions of Executive's continued employment and to secure for Employer the
benefits of Executive's continued contributions by reason of Executive's
experience, skills and knowledge pertaining to Employer's business, and to
increase Executive's salary in exchange for Executive making a long term
commitment to Employer.

      NOW, THEREFORE, in consideration of the mutual covenants and agreements
contained herein, Employer and Executive agree as follows:

SECTION 1.  EMPLOYMENT.

(a) POSITION. Employer hereby employs Executive and Executive hereby accepts
such employment for the provision of executive services on behalf of Employer as
Vice President. Executive agrees to serve in such capacity with the duties set
forth in Section 1(b) for a term beginning on March 1, 1999, and ending on
December 31, 2001, unless renewed pursuant to Section 1(c) hereof, or terminated
pursuant to Section 5.

(b) DUTIES. Executive's duties and responsibilities shall be those consistent
with and appropriate to the position of Vice President, as may be established
and directed from time to time, by the Board of Directors. Executive shall
devote his full time and attention to his duties and responsibilities as Vice
President, which he will carry out to the best of his abilities. Executive shall
treat his position with Employer as his exclusive occupation and employment,
refraining from engaging in all other active business activities, except as may
be approved by Employer's Board of Directors.

(c) This Agreement may be renewed by the Employer by sending notice to Executive
at least 180 days prior to the end of the term set forth in Section 1(a), and
the Executive delivering written acceptance to Employer within 10 days of
receipt of such notice.
<PAGE>   2
SECTION 2. COMPENSATION.

      (a) ALLOCATION OF BASE ANNUAL SALARY. Employer shall pay to Executive
during the term of this Agreement a base annual salary of no less than $150,000.
Such base annual salary may be changed upon annual review by the Board of
Directors or its Compensation Committee. Such annual review shall occur prior to
the end of February each year beginning in the year 2000 for the express purpose
of considering increments. All compensation payments shall be paid in accordance
with Employer's regular payroll schedule and practice, and shall be subject to
all applicable withholding.

      (b) BONUSES. Executive shall be eligible to participate in and receive
periodic bonuses under Employer's current Bonus Payment Plan. In addition,
Employer, in its sole discretion, may elect to pay to Executive such periodic
bonuses as it deems appropriate.

      (c) BUSINESS EXPENSES. Upon presentation of appropriate documentation,
Employer shall reimburse Executive for expenses reasonably incurred in the
course of his employment, in accordance with policies established by Employer.

SECTION 3. BENEFITS

      In addition to the compensation specified in Section 2, Employer shall
provide Executive with the following fringe benefits:

      (a) EXECUTIVE BENEFITS. In addition to any other benefits provided in this
Section 3, Executive shall be entitled to those fringe benefits to which all
other employees of Employer are entitled during employment. Nothing in this
Agreement shall require the Employer to establish, maintain or continue any of
the fringe benefits already in existence or hereafter adopted for employees of
Employer and nothing in this Agreement shall restrict the right of the Employer
to amend, modify or terminate such fringe benefit programs.

      (b) VACATION. Executive shall be entitled to twenty two (22) days of
compensated vacation time in each year of this Agreement.

      (c) PROFESSIONAL MEETINGS. Executive shall be entitled to attend
professional meetings and to attend to such outside professional duties in the
insurance industry as may be appropriate and commensurate with his position
hereunder.

      (d) PROFESSIONAL DUES. Employer agrees to pay the applicable dues to
professional associations and societies of which Executive is a member.

      (e) INSURANCE. Employer shall provide insurance coverage (so long as all
other Employees of Employer are provided with such coverage) as follows:

      1.    Employer shall provide life insurance coverage for Executive in
            accordance with Employer's policy in an amount of $150,000, payable
            to the beneficiary or beneficiaries of his choice.


                                       2
<PAGE>   3
      2.    Employer shall provide comprehensive health, major medical and
            long-term disability insurance for Executive and his family in
            accordance with Employer's group insurance plan.

      3.    Employer shall provide travel accident insurance covering Executive
            in accordance with Employer's standard policy.

SECTION 4. CONFIDENTIALITY

      While employed under this Agreement or at any time thereafter, Executive
agrees that he will not, directly or indirectly (other than in the performance
of the services under this Agreement), make or cause to be made any disclosure,
copy or other use not authorized by Employer of any confidential information
pertaining to Employer or any of its affiliates acquired during the course of
his employment by Employer, unless such information is or becomes otherwise
generally available to the public. For purposes of this Agreement, the term
"confidential information" means any business and financial information of any
nature not generally known to the public at large regarding the business and
operations of Employer or any of its affiliates.

SECTION 5. TERMINATION

      Executive's employment hereunder shall terminate as follows:

(a)   TERMINATION NOTICE. Either party may terminate Executive's employment,
      with or without cause, upon thirty (30) days written notice to the other
      party. Executive and Employer may agree that Executive may cease work
      after notice has been given but before the expiration of thirty (30) days
      in which case the effective date of the termination of Executive's
      employment shall be the date on which Executive ceases performing duties
      on behalf of Employer.

(b)   DEATH OR DISABILITY. Executive's employment shall terminate without notice
      upon Executive's date of death or disability as that term is defined
      herein. For purposes of this subsection, disability shall mean a period of
      six (6) consecutive months or an aggregate of eight (8) months in any
      twelve (12) consecutive month period during which Executive is disabled
      from performing his duties and responsibilities hereunder by reason of any
      illness, accident, injury or other health or medical condition of any
      kind.

(c)   WITH CAUSE. Employer may terminate this Agreement, without advance notice,
      upon a breach by Executive, for insubordination or disloyalty, for failure
      to follow the legal directives of the Board of Directors, or upon the
      conviction of Executive of any felony or of any criminal act in the course
      of, or pertaining to, Executive's employment hereunder. Such termination
      by Employer shall constitute a termination with cause.

(d)   CHANGE OF CONTROL; CHANGE OF EXECUTIVE'S DUTIES. In the event of a "change
      of control" of Employer, as such term is hereinafter defined, or a "change
      of Executive's duties" as such term is also hereinafter defined, Executive
      may, but shall not be required to, elect to terminate his employment
      hereunder and treat the termination of such employment as a termination by
      Employer without cause. Any such election must be made within one (1) year


                                       3
<PAGE>   4
      from the date of occurrence of the events giving rise to either a change
      of control of Employer or a change of Executive's duties. In such event,
      Executive shall provide to Employer the thirty (30) day notice referred to
      in subsection (a) above, indicating his election to treat such termination
      of employment as a termination by Employer without cause.

For purposes of this Agreement, a "change of control" of Employer shall be
deemed to have occurred in the event of the occurrence of any of the following:
(i) the sale of 50% or more of the common stock, or the assets, of The
Navigators Group, Inc., to parties unaffiliated with Terence N. Deeks, in a
transaction or series of transactions occurring within a one year period; (ii) a
merger of Employer with any other entity, such that the other entity or any of
its parents or affiliates have the right to control the business operations of
Employer or, as a result of such a merger, Employer is not the surviving or
continuing business entity.

      For purposes of this Agreement, a change of Executive's duties shall be
deemed to have occurred in the event of the Executive's duties and
responsibilities are materially reduced and a significant portion of his duties
and responsibilities are assigned to one or more other employees of Employer.

(e)   WITHOUT CAUSE. Except as set forth in subsections (b) and (c) above, the
      termination of Executive's employment by Employer shall constitute a
      termination without cause.

SECTION 6.  EFFECT OF TERMINATION; SEVERANCE BENEFITS

(a)   TERMINATION BENEFITS FOR TERMINATION WITHOUT CAUSE. If Employer terminates
      the employment of Executive without cause, Executive shall be entitled to
      receive from Employer:

1.    An amount equal to one year's base salary, as in effect for the twelve
      (12) month period immediately preceding the effective date of such
      termination of employment.

2.    Executive shall be entitled to continued comprehensive health and major
      medical insurance coverage, at Employer's cost, under Employer's group
      insurance plan, COBRA if necessary, for a period of six (6) months after
      the effective date of such termination of employment. Thereafter, to the
      extent eligible, Executive may continue such coverage, at his own cost,
      under COBRA.

3.    During the period that termination benefits are paid under this Agreement,
      Executive shall not be required to perform any duties for Employer or
      report to the Employer offices.

4.    Employer shall pay to Executive the termination benefit referred to in
      Section (a)(1) above by either paying such sum in installments on
      Employer's regular payroll dates for the one-year period in question, or,
      alternatively, with the Executive's prior written consent, to prepay such
      benefits in a single lump-sum amount, actuarially reduced by reason of
      such prepayment. In the event that Employer pays such sum in installments
      on its regular payroll dates, as aforesaid, and only in such event, if
      Executive shall accept full-time employment during the period in which
      such payments are being made, then Executive shall, within ten (10) days
      of accepting such employment, advise Employer of such fact, indicating the
      name and address of his new Employer and the amount of his salary. If
      Executive's salary at his


                                       4
<PAGE>   5
      new place of employment is equal to or greater than his last salary at
      Employer, the payment by Employer of the termination benefit and the
      providing to Executive of continued comprehensive healthcare and major
      medical benefits under Employer's plan and at its expense shall terminate
      upon the commencement of Executive's new employment. If Executive's salary
      in his new position is less than his last salary at Employer, Employer's
      continuing installment payments to Executive shall be reduced so as to pay
      to Executive the difference between his salary rate at his new place of
      employment and his last salary rate at Employer. Employer's continuation
      of comprehensive healthcare and major medical benefits shall also
      terminate at the commencement of Executive's new employment, unless he is
      not receiving comparable healthcare insurance benefits under his new
      Employer's insurance plan.

(b)   NO BENEFITS FOR WITH CAUSE TERMINATION. Upon termination of this Agreement
      by Employer with cause, under the provisions of Section 5(c), or the
      termination of this Agreement by reason of Executive's death or disability
      under Section 5(b) (provided that Employer has a disability insurance
      policy in force for the benefit of Employee at such time as Employee
      claims disability), Employer shall not be obligated to pay to Executive
      (or his estate or representative in the event of his death) any
      termination benefits and Employer's obligations hereunder shall terminate
      with the effective date of the termination of the Executive's employment.
      However, Executive's obligations and covenants under Section 4 shall
      continue in full force and effect and shall survive the termination of
      Executive's employment.

SECTION 7.  MISCELLANEOUS

(a)   SOLE AGREEMENT; AMENDMENT. This Agreement constitutes the entire agreement
      of the parties, supersedes all prior agreements and understandings, and
      may be amended only by a written agreement executed by both of the parties
      hereto.

(b)   SEVERABILITY. The invalidity or unenforceability of any particular
      provision of this contract shall not affect its other provisions, and this
      Agreement shall be construed in all respects as if such invalid or
      unenforceable provision had been omitted.

(c)   SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon and inure to
      the benefit of each of the parties hereto, their successors and assigns,
      administrators, executors, legatees, and representatives, including,
      without limitation, any corporation into which Employer may be merged or
      by which it may be acquired.

(d)   FORUM. This Agreement shall be construed and enforced under and in
      accordance with the internal laws of the State of New York.

(e)   COUNSEL. Each of the parties have read this Agreement and execute it after
      having an opportunity to consult with counsel.

(f)   NOTICES. Any and all notices required to be given under this Agreement
      shall be given by, and be deemed given when, (i) delivered by personal
      delivery; (ii) deposited in U.S. first-class mail, postage prepaid; or
      (iii) sent by telecopy with confirmation of receipt and by first class
      mail, postage prepaid, addressed as follows:


                                       5
<PAGE>   6
      If to Employer:   Somerset Marine, Inc.
                        123 William Street
                        New York, NY 10038
                        Attention: Terence N. Deeks
                        Fax: 212-346-6820


      If to Executive:  Mr. Salvatore A. Margarella
                        123 William Street
                        New York, NY 10038


or such other address as a party may designate in writing to the other party.

                                   SIGNATURES


      IN WITNESS WHEREOF, the parties have executed this Agreement effective as
of the date first set forth above.



SOMERSET MARINE, INC.               EXECUTIVE:


BY: /s/ Terence N. Deeks                  /s/ Salvatore A. Margarella
   ----------------------------------     ----------------------------------

DATE: March 1, 1999                       DATE: March 3, 1999
      -------------------------------           ----------------------------


                                       6

<PAGE>   1



                                                                    EXHIBIT 11-1


                   THE NAVIGATORS GROUP, INC. AND SUBSIDIARIES


                        COMPUTATION OF PER SHARE EARNINGS

         Earnings Per Share of Common Stock and Common Stock Equivalents

                      (In thousands, except per share data)


<TABLE>
<CAPTION>
                                                       YEAR ENDED DECEMBER 31,
                                                     ---------------------------
                                                       1998      1997     1996
                                                     -------   -------   -------
<S>                                                  <C>       <C>       <C>    
Net income applicable to common stock                $11,489   $12,546   $16,752

Average number of common shares outstanding            8,414     8,296     8,197

Net income per share - Basic                         $  1.37   $  1.51   $  2.04


Average number of common shares outstanding            8,414     8,296     8,197
Add: Assumed exercise of stock options                    45        89        89
                                                     -------   -------   -------

Common and common equivalent shares outstanding        8,459     8,385     8,286
                                                     =======   =======   =======
Net income per share - Diluted                       $  1.36   $  1.50   $  2.02

</TABLE>



<PAGE>   1


                                                                    EXHIBIT 21-1


                           THE NAVIGATORS GROUP, INC.
                                AND SUBSIDIARIES



SUBSIDIARIES OF THE REGISTRANT AT DECEMBER 31, 1998

<TABLE>
<CAPTION>
                                                               JURISDICTION IN
NAME                                                           WHICH ORGANIZED
- - ----                                                           ---------------
<S>                                                            <C>
Navigators Insurance Company                                   New York
NIC Insurance Company                                          New York
Somerset Marine, Inc.                                          New York
Somerset Insurance Services of Texas, Inc.                     Texas
Somerset Insurance Services of California, Inc.                California
Somerset Insurance Services of Washington, Inc.                Washington
Somerset Marine Aviation Property Managers, Inc.               New Jersey
Somerset Asia Pacific Pty Ltd.                                 Sydney, Australia
Somerset Marine (UK) Ltd.                                      England
Navigators Corporate Underwriters Ltd.                         England
Navigators Holdings (UK) Ltd.                                  England
Somerset Services Pte Ltd.                                     Singapore
Mander, Thomas & Cooper
   (Underwriting Agencies) Ltd.                                England
Millennium Underwriting Ltd.                                   England
</TABLE>

<PAGE>   1


                                                                    EXHIBIT 23-1


               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS



The Board of Directors
The Navigators Group, Inc.

We consent to incorporation by reference in the registration statement (No.
33-51608) on Form S-8 of The Navigators Group, Inc. and subsidiaries of our
report dated March 26, 1999, relating to the consolidated balance sheets of The
Navigators Group, Inc. and subsidiaries as of December 31, 1998, and 1997, and
the related consolidated statements of income, stockholders' equity, and cash
flows for each of the years in the three-year period ended December 31, 1998,
and all related schedules, which report appears in the December 31, 1998, annual
report on Form 10-K of The Navigators Group, Inc. and subsidiaries.


                                             /s/ KPMG LLP

New York, New York
March 26, 1999


<TABLE> <S> <C>

<ARTICLE>                                    7
<MULTIPLIER>                                 1000
<CURRENCY>                                   U.S. DOLLARS
       
<S>                                <C>
<PERIOD-TYPE>                      12-MOS
<FISCAL-YEAR-END>                                 DEC-31-1998
<PERIOD-START>                                    JAN-01-1998
<PERIOD-END>                                      DEC-31-1998
<EXCHANGE-RATE>                                             1
<DEBT-HELD-FOR-SALE>                                  240,233
<DEBT-CARRYING-VALUE>                                       0
<DEBT-MARKET-VALUE>                                         0
<EQUITIES>                                              7,400
<MORTGAGE>                                                  0
<REAL-ESTATE>                                               0
<TOTAL-INVEST>                                        254,425
<CASH>                                                  2,807
<RECOVER-REINSURE>                                    200,017
<DEFERRED-ACQUISITION>                                  4,303
<TOTAL-ASSETS>                                        592,086
<POLICY-LOSSES>                                       342,444
<UNEARNED-PREMIUMS>                                    51,295
<POLICY-OTHER>                                              0
<POLICY-HOLDER-FUNDS>                                       0
<NOTES-PAYABLE>                                        23,500
                                       0
                                                 0
<COMMON>                                                  845
<OTHER-SE>                                            142,421
<TOTAL-LIABILITY-AND-EQUITY>                          592,086
                                             91,203
<INVESTMENT-INCOME>                                    15,209
<INVESTMENT-GAINS>                                      1,431
<OTHER-INCOME>                                            708
<BENEFITS>                                             62,322
<UNDERWRITING-AMORTIZATION>                            11,864
<UNDERWRITING-OTHER>                                   24,264
<INCOME-PRETAX>                                        15,153
<INCOME-TAX>                                            3,664
<INCOME-CONTINUING>                                    11,489
<DISCONTINUED>                                              0
<EXTRAORDINARY>                                             0
<CHANGES>                                                   0
<NET-INCOME>                                           11,489
<EPS-PRIMARY>                                            1.37
<EPS-DILUTED>                                            1.36
<RESERVE-OPEN>                                        139,841
<PROVISION-CURRENT>                                    65,705
<PROVISION-PRIOR>                                      (3,383)
<PAYMENTS-CURRENT>                                     (9,848)
<PAYMENTS-PRIOR>                                      (41,798)
<RESERVE-CLOSE>                                       150,517
<CUMULATIVE-DEFICIENCY>                                (3,383)
        





</TABLE>


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