GULFMARK OFFSHORE INC
S-8, 1997-08-15
OIL & GAS FIELD MACHINERY & EQUIPMENT
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<PAGE>   1
                                                                            
         As filed with the Securities and Exchange Commission on August 15, 1997

                                       Registration No. 333-__________________
===============================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                ----------------
                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                                ----------------
                             GULFMARK OFFSHORE, INC.
             (Exact Name of Registrant as specified in its charter)

          Delaware                                          76-0526032
(State or other jurisdiction of                          (I.R.S. Employer
incorporation or organization)                          Identification No.)

                           5 Post Oak Park, Suite 1170
                              Houston, Texas 77027
                    (Address of principal executive offices)
                                ----------------
        AMENDED AND RESTATED 1993 NON-EMPLOYEE DIRECTOR STOCK OPTION PLAN
                             1987 STOCK OPTION PLAN
                       NON-EMPLOYEE DIRECTOR STOCK OPTIONS
                            (Full Title of the Plan)
                                ----------------
                                 FRANK R. PIERCE
                            Executive Vice President
                             GulfMark Offshore, Inc.
                           5 Post Oak Park, Suite 1170
                              Houston, Texas 77027
                                 (713) 963-9522
            (Name, address and telephone number of agent for service)

                                    Copy to:
                             W. GARNEY GRIGGS, Esq.
                             Griggs & Harrison, P.C.
                            1301 McKinney, Suite 3200
                              Houston, Texas 77010
                                 (713) 651-0600
                                ----------------
                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
=======================================================================================================================
                                                         Proposed                Proposed
       Title of                                           Maximum                 Maximum
      Securities                Amount to             Offering Price             Aggregate                Amount of
   to be Registered           be Registered            Per Share (1)        Offering Price (1)        Registration Fee
- -----------------------------------------------------------------------------------------------------------------------
<S>                      <C>                      <C>                      <C>                     <C>
     Common Stock,
 par value $0.01             797,646 shares               $30.00              $23,929,380.00              $7,252.00
     per share
=======================================================================================================================
</TABLE>

(1)  Estimated solely for the purpose of calculating the registration fee in
     accordance with Rule 457(c) and 457(h), based on the average of the high
     and low prices of the Company's Common Stock on August 11, 1997, as 
     reported on the NASDAQ National Market System.

                                                        

<PAGE>   2



                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT



Item 3.  Incorporation of Certain Documents by Reference

         GulfMark Offshore, Inc. (the "Company") incorporates herein by 
reference the following documents filed with the Securities and Exchange 
Commission (File No. 000-22853):

         (1) Final Prospectus filed pursuant to Rule 424(b) on August 15, 1997; 

         (2) The Quarterly Report of the Company on Form 10-Q for the quarter
ended June 30, 1997; and

         (3) The description of the common stock, par value $0.01 per share (the
"Common Stock"), of the Company contained in the Company's Registration
Statement on Form 8-A, filed April 29, 1997.

         All documents filed by the Company pursuant to Sections 13(a), 13(c),
14 and 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange
Act") after the date of this Registration Statement and prior to the filing of a
post-effective amendment which indicates that all securities offered hereby have
been sold or which deregisters all such securities then remaining unsold, shall
be deemed to be incorporated by reference in this Registration Statement and to
be a part hereof from the date of filing such documents.

         Any statement contained herein or in any document incorporated or
deemed to be incorporated by reference herein shall be deemed to be modified and
superseded for purposes of this Registration Statement to the extent such
statement is modified or superseded by a statement contained in any other
subsequently filed incorporated document or in any accompanying prospectus
supplement.

Item 4.  Description of Securities

         Not applicable.

Item 5.  Interests of Named Experts and Counsel

         Not applicable.

Item 6.  Indemnification of Directors and Officers

         General

         Article Eighth of the Company's Certificate of Incorporation, as
amended ("Article Eighth") requires the Company to indemnify its directors,
officers and certain other individuals to the full extent permitted by the
Delaware General Corporation Law ("Delaware GCL") or other applicable laws and
allows the Company to enter into agreements with any person to provide greater
or different indemnification than that provided in Article Eighth or the
Delaware GCL.

         Article Ninth of the Company's Certificate of Incorporation ("Article
Ninth") limits the personal liability of the Company's directors to the Company
or its shareholders to the full extent permitted by the Delaware GCL, which
currently permits directors to be protected from monetary damages for breach of
their fiduciary duty of care. This limitation has no effect on claims arising
under the federal securities laws.



                                        2

<PAGE>   3



         Indemnification and Insurance

         Under the Delaware GCL, directors and officers as well as other
employees and individuals may be indemnified against expenses (including
attorneys' fees), judgments, fines and amounts paid in settlement in connection
with specified actions, suits or proceedings, whether civil, criminal,
administrative or investigative (other than an action by or in the right of the
corporation such as a derivative action) if they acted in good faith and in a
manner they reasonably believed to be in or not opposed to the best interests of
the corporation and, with respect to any criminal action or proceeding, had no
reasonable cause to believe their conduct was unlawful. A similar standard of
care is applicable in the case of actions by or in the right of the corporation,
except that indemnification extends only to expenses (including attorneys' fees)
incurred in connection with defense or settlement of such an action, and the
Delaware GCL requires court approval before there can be any indemnification
where the person seeking indemnification has been found liable to the
corporation.

         Article Eighth provides that each person who is or was or had agreed to
become a director or officer of the Company, and each such person who is or was
serving or who had agreed to serve at the request of the Board of Directors or
an officer of the Company as an employee or agent of the Company, or as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise (including the heirs, executors,
administrators or estate of such person) shall be indemnified by the Company to
the full extent permitted by the Delaware GCL or any other applicable laws as
presently or hereafter in effect. Under Article Eighth, subject to the
limitations on indemnification imposed by the Delaware GCL, a large award
against an officer or director or other appropriate individual could be paid by
the Company, which could materially reduce the assets of the Company.

         Article Eighth provides that, without limiting the generality or effect
of the foregoing, the Company may enter into one or more agreements with any
person which provide for indemnification greater or different than that provided
in Article Eighth. Finally, Article Eighth and Article Ninth each provide that
any repeal or modification of such article shall not adversely affect any right
or protection existing thereunder immediately prior to such repeal or
modification.

         At present there is no pending litigation or proceeding involving a
director or officer of the Company in which indemnification would be required or
permitted by the indemnification agreements. The Board of Directors is not aware
of any threatened litigation or proceeding which may result in a claim for
indemnification under any such indemnification agreement.

         Elimination of Liability in Certain Circumstances

         Under the Delaware GCL, Article Ninth protects the Company's directors
against monetary damages for breaches of their duty of care, except as set forth
below. The inclusion of Article Ninth in the Company's Certificate of
Incorporation means that the Company and its shareholders forego the ability to
bring a cause of action against a director for monetary damages for certain
breaches of fiduciary duty, including actions in connection with proposals for
the acquisition of control of the Company. Directors remain liable for breaches
of their duty of loyalty to the Company and its shareholders, as well as acts or
omissions not in good faith or which involve intentional misconduct or a knowing
violation of law and transactions from which a director derives improper
personal benefit. Also, Article Ninth does not eliminate director liability
under Section 174 of the Delaware GCL, which makes directors personally liable
for unlawful dividends or unlawful stock repurchases or redemptions and
expressly sets forth a negligence standard with respect to such liability.

         Although Article Ninth provides directors with protection from awards
of monetary damages for breaches of the duty of care, it does not eliminate the
directors' duty of care. Accordingly, Article Ninth has no effect on the
availability of equitable remedies such as an injunction or rescission based
upon a director's breach of the duty of care. The provisions of Article Ninth
which eliminate liability as described above applies to officers of the Company
only if they are directors of the Company and are acting in their capacity as
directors, and does not apply to officers of the Company who are not directors.


                                        3

<PAGE>   4



Item 7.  Exemption from Registration Claimed

         Not applicable.

Item 8.  Exhibits

         The following instruments and documents are included as Exhibits to
this Registration Statement. Exhibits incorporated by reference are so indicated
by parenthetical information.

Exhibit
Number            Exhibit

   4.1    -       Certificate of Incorporation of the Company (incorporated by 
                  reference to Exhibit 3.1 to the Company's Registration 
                  Statement on Form S-4, No. 333-24141)

   4.2    -       Certificate of Amendment to Certificate of Incorporation of 
                  the Company (incorporated by reference to Exhibit 3.2 to the 
                  Company's Registration on Form S-4, No. 333-24141)

   4.3    -       Bylaws of the Company (incorporated by reference to Exhibit 
                  3.3 to the Company's Registration  Statement on Form
                  S-4, No. 333-24141)

 4.4.1    -       GulfMark International, Inc. Amended and Restated 1993 
                  Non-Employee Director Stock Option Plan (incorporated by
                  reference to Exhibit 10.7 to the Company's Registration
                  Statement on Form S-1, No. 333-31139).

 4.4.2    -       Amendment No. 1 to the GulfMark International, Inc. Amended 
                  and Restated 1993 Non-Employee Director Stock Option Plan
                  (incorporated by reference to Exhibit 10.8 to the Company's
                  Registration Statement on Form S-1, No. 333-31139).

 4.4.3    -       GulfMark Offshore, Inc. Instrument of Assumption and 
                  Adjustment (GulfMark International, Inc. Amended and Restated 
                  1993 Non-Employee Director Stock Option Plan) (incorporated by
                  reference to Exhibit 10.9 to the Company's Registration 
                  Statement on Form S-1, No. 333-31139).

 4.4.4    -       Form of Stock Option Agreement (GulfMark International, Inc.
                  Amended and Restated 1993 Non-Employee Director Stock Option 
                  Plan) (incorporated by reference to Exhibit 10.10 to the 
                  Company's Registration Statement on Form S-1, No. 333-31139).

 4.4.5    -       Form of Amendment No. 1 to Stock Option Agreement (GulfMark
                  International, Inc. Amended and Restated 1993 Non-Employee 
                  Director Stock Option Plan) (incorporated by reference to 
                  Exhibit 10.11 to the Company's Registration Statement on 
                  Form S-1, No. 333-31139).

 4.4.6    -       Form of Stock Option Agreement (GulfMark Offshore, Inc. 1993 
                  Non-Employee Director Stock Option Plan) (incorporated by 
                  reference to Exhibit 10.12 to the Company's Registration 
                  Statement on Form S-1; No. 333-31139).

 4.5.1    -       GulfMark International, Inc. 1987 Stock Option Plan 
                  (incorporated by reference to Exhibit No. 10.1 to the
                  Registration Statement on Form S-4 No. 333-24141).

 4.5.2    -       Amendment to the GulfMark International, Inc. 1987 Stock 
                  Option Plan, as amended (incorporated by reference to 
                  Exhibit 10.2 to the Company's Registration Statement on 
                  Form S-1, No. 333-31139).

*4.5.3    -       GulfMark Offshore, Inc. Amended and Restated Instrument of 
                  Assumption and Adjustment (GulfMark International, Inc. 1987
                  Stock Option Plan).

 4.5.4    -       Form of Incentive Stock Option Agreement (GulfMark 
                  International, Inc. 1987 Stock Option Plan) (incorporated by
                  reference to Exhibit 10.4 to the Company's Registration 
                  Statement on Form S-1, No. 333-31139).

 4.5.5    -       Form of Amendment No. 1 to Incentive Stock Option Agreement
                  (GulfMark International, Inc. 1987 Stock Option Plan, as 
                  amended) (incorporated by reference to Exhibit 10.5 to the 
                  Company's Registration Statement on Form S-1, No. 333-31139).
 
 4.5.6    -       Form of Incentive Stock Option Agreement (GulfMark Offshore,
                  Inc. 1987 Stock Option Plan) (incorporated by reference to 
                  Exhibit 10.6 to the Company's Registration Statement on 
                  Form S-1, No. 333-31139).

 4.6.1    -       GulfMark Offshore, Inc. Instrument of Assumption and
                  Adjustment (GulfMark International, Inc. Director
                  Stock Option Agreements) (incorporated by reference to 
                  Exhibit 10.13 to the Company's Registration Statement on 
                  Form S-1, No. 333-31139).

 4.6.2    -       Form of Stock Option Agreement (Gulfmark International, Inc.
                  Director Stock Options) (incorporated by reference to Exhibit 
                  10.14 to the Company's Registration Statement on Form S-1, 
                  No. 333-31139).

 4.6.3    -       Form of Amendment No. 1 to Stock Option Agreement (GulfMark
                  International, Inc. Director Stock Options) (incorporated by 
                  reference to Exhibit 10.15 to the Company's Registration 
                  Statement on Form S-1, No. 333-31139).

   4.7    -       Specimen Certificate for the Company's Common Stock, $0.01
                  par value (incorporated by reference to Exhibit 4.2 to the 
                  Company's Registration Statement on Form S-1, No. 333-31139).

  *5.1    -       Opinion of Griggs & Harrison, P.C.

  23.1    -       Consent of Griggs & Harrison, P.C. (included in Exhibit 5.1)

 *23.2    -       Consent of Arthur Andersen LLP with respect to the 
                  financial statements of GulfMark Offshore, Inc.
                 
- ---------------
*Filed herewith


                                        4

<PAGE>   5
Item 9.  Undertakings


    (a)   The Company hereby undertakes:

    (1) To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:

         (i) To include any prospectus required by section 10(a)(3) of the 
    Securities Act of 1933, as amended (the "Securities Act");

        (ii) To reflect in the prospectus any facts or events arising after the
    effective date of the Registration Statement (or the most recent
    post-effective amendment thereof) which, individually or in the aggregate,
    represent a fundamental change in the information set forth in the
    Registration Statement. Notwithstanding the foregoing, any increase or
    decrease in volume of securities offered (if the total dollar value of
    securities would not exceed that which was registered) and any deviation
    from the low or high end of the estimated maximum offering range may be
    reflected in the form of prospectus filed with the Commission pursuant to
    Rule 424(b) if, in the aggregate, the changes in volume and price represent
    no more than a 20% change in the maximum aggregate offering price set forth
    in the "Calculation of Registration Fee" table in the effective Registration
    Statement.

       (iii) To include any material information with respect to the plan of
    distribution not previously disclosed in the Registration Statement or any
    material change to such information in the Registration Statement;

provided, however, that paragraphs (i) and (ii) above do not apply if the
information required to be included in a post-effective amendment by those
paragraphs is contained in periodic reports filed by the Company pursuant to
Section 13 or Section 15(d) of the Exchange Act that are incorporated by
reference in this Registration Statement.

    (2) That, for the purpose of determining any liability under the Securities
Act, each such post-effective amendment shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such
securities at that time shall be deemed to be the initial bona fide offering
thereof.

    (3) To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the termination of the
offering.

    (b) The Company hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Company's annual report
pursuant to Section 13(a) or Section 15(d) of the Exchange Act (and, where
applicable, each filing of an employee benefit plan's annual report pursuant to
section 15(d) of the Exchange Act) that is incorporated by reference in the
Registration Statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

    (h) Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers and controlling persons of the
Company pursuant to the provisions described under Item 6 above, or otherwise,
the Company has been advised that, in the opinion of the Securities and Exchange
Commission, such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the Company
of expenses

                                        5

<PAGE>   6



incurred or paid by a director, officer or controlling person of the Company in
the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Company will, unless, in the opinion of its counsel, the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.



                                        6

<PAGE>   7



                                   SIGNATURES

    Pursuant to the requirements of the Securities Act of 1933, GulfMark
Offshore, Inc. certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Houston, State of Texas, on August 15, 1997.


                                           GULFMARK OFFSHORE, INC.


                                           By:      /s/ FRANK R. PIERCE
                                              ---------------------------------
                                                       Frank R. Pierce
                                                  Executive Vice President
                                                 and Chief Financial Officer
                                                (Principal Financial Officer)


         Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement or Amendment has been signed by the following persons in
the capacities and on the dates indicated.

<TABLE>
<CAPTION>

              Signature                                        Title                                Date
              ---------                                        -----                                ----

<S>                                            <C>                                           <C>
     /s/  DAVID J. BUTTERS                     Director and                                  August 15, 1997
- ------------------------------------------     Chairman of the Board
         (David J. Butters)

    /s/  NORMAN G. COHEN                       Director                                      August 15, 1997
- ------------------------------------------
        (Norman G. Cohen)

   /s/  MARSHALL A. CROWE                      Director                                      August 15, 1997
- ------------------------------------------
       (Marshall A. Crowe)

    /s/  LOUIS S. GIMBEL, 3RD                  Director                                      August 15, 1997
- ------------------------------------------
      (Louis S. Gimbel, 3rd)

      /s/  ROBERT B. MILLARD                   Director                                      August 15, 1997
- ------------------------------------------
        (Robert B. Millard)

    /s/  BRUCE A. STREETER                     President and Chief Operating                 August 15, 1997
- ------------------------------------------     Officer (Principal Executive
        (Bruce A. Streeter)                    Officer) and Director

     /s/  FRANK R. PIERCE                      Executive Vice President                      August 15, 1997
- ------------------------------------------     (Principal Financial Officer)
         (Frank R. Pierce)

     /s/  KEVIN D. MITCHELL                    Controller                                    August 15, 1997
- ------------------------------------------     (Principal Accounting Officer)
         (Kevin D. Mitchell)                   
</TABLE>




                                        7

<PAGE>   8

                                  EXHIBIT INDEX
<TABLE>
<CAPTION>

Exhibit
Number            Exhibit
- -------           -------
<S>               <C>
   4.1    -       Certificate of Incorporation of the Company (incorporated by 
                  reference to Exhibit 3.1 to the Company's Registration 
                  Statement on Form S-4, No. 333-24141)

   4.2    -       Certificate of Amendment to Certificate of Incorporation of 
                  the Company (incorporated by reference to Exhibit 3.2 to the 
                  Company's Registration on Form S-4, No. 333-24141)

   4.3    -       Bylaws of the Company (incorporated by reference to Exhibit 
                  3.3 to the Company's Registration  Statement on Form
                  S-4, No. 333-24141)

 4.4.1    -       GulfMark International, Inc. Amended and Restated 1993 
                  Non-Employee Director Stock Option Plan (incorporated by
                  reference to Exhibit 10.7 to the Company's Registration
                  Statement on Form S-1, No. 333-31139).

 4.4.2    -       Amendment No. 1 to the GulfMark International, Inc. Amended 
                  and Restated 1993 Non-Employee Director Stock Option Plan
                  (incorporated by reference to Exhibit 10.8 to the Company's
                  Registration Statement on Form S-1, No. 333-31139).

 4.4.3    -       GulfMark Offshore, Inc. Instrument of Assumption and 
                  Adjustment (GulfMark International, Inc. Amended and Restated 
                  1993 Non-Employee Director Stock Option Plan) (incorporated by
                  reference to Exhibit 10.9 to the Company's Registration 
                  Statement on Form S-1, No. 333-31139).

 4.4.4    -       Form of Stock Option Agreement (GulfMark International, Inc.
                  Amended and Restated 1993 Non-Employee Director Stock Option 
                  Plan) (incorporated by reference to Exhibit 10.10 to the 
                  Company's Registration Statement on Form S-1, No. 333-31139).

 4.4.5    -       Form of Amendment No. 1 to Stock Option Agreement (GulfMark
                  International, Inc. Amended and Restated 1993 Non-Employee 
                  Director Stock Option Plan) (incorporated by reference to 
                  Exhibit 10.11 to the Company's Registration Statement on 
                  Form S-1, No. 333-31139).

 4.4.6    -       Form of Stock Option Agreement (GulfMark Offshore, Inc. 1993 
                  Non-Employee Director Stock Option Plan) (incorporated by 
                  reference to Exhibit 10.12 to the Company's Registration 
                  Statement on Form S-1; No. 333-31139).

 4.5.1    -       GulfMark International, Inc. 1987 Stock Option Plan 
                  (incorporated by reference to Exhibit No. 10.1 to the
                  Registration Statement on Form S-4 No. 333-24141).

 4.5.2    -       Amendment to the GulfMark International, Inc. 1987 Stock 
                  Option Plan, as amended (incorporated by reference to 
                  Exhibit 10.2 to the Company's Registration Statement on 
                  Form S-1, No. 333-31139).

*4.5.3    -       GulfMark Offshore, Inc. Amended and Restated Instrument of 
                  Assumption and Adjustment (GulfMark International, Inc. 1987
                  Stock Option Plan).

 4.5.4    -       Form of Incentive Stock Option Agreement (GulfMark 
                  International, Inc. 1987 Stock Option Plan) (incorporated by
                  reference to Exhibit 10.4 to the Company's Registration 
                  Statement on Form S-1, No. 333-31139).

 4.5.5    -       Form of Amendment No. 1 to Incentive Stock Option Agreement
                  (GulfMark International, Inc. 1987 Stock Option Plan, as 
                  amended) (incorporated by reference to Exhibit 10.5 to the 
                  Company's Registration Statement on Form S-1, No. 333-31139).
 
 4.5.6    -       Form of Incentive Stock Option Agreement (GulfMark Offshore,
                  Inc. 1987 Stock Option Plan) (incorporated by reference to 
                  Exhibit 10.6 to the Company's Registration Statement on 
                  Form S-1, No. 333-31139).

 4.6.1    -       GulfMark Offshore, Inc. Instrument of Assumption and
                  Adjustment (GulfMark International, Inc. Director
                  Stock Option Agreements) (incorporated by reference to 
                  Exhibit 10.13 to the Company's Registration Statement on 
                  Form S-1, No. 333-31139).

 4.6.2    -       Form of Stock Option Agreement (Gulfmark International, Inc.
                  Director Stock Options) (incorporated by reference to Exhibit 
                  10.14 to the Company's Registration Statement on Form S-1, 
                  No. 333-31139).

 4.6.3    -       Form of Amendment No. 1 to Stock Option Agreement (GulfMark
                  International, Inc. Director Stock Options) (incorporated by 
                  reference to Exhibit 10.15 to the Company's Registration 
                  Statement on Form S-1, No. 333-31139).

   4.7    -       Specimen Certificate for the Company's Common Stock, $0.01
                  par value (incorporated by reference to Exhibit 4.2 to the 
                  Company's Registration Statement on Form S-1, No. 333-31139).

  *5.1    -       Opinion of Griggs & Harrison, P.C.

  23.1    -       Consent of Griggs & Harrison, P.C. (included in Exhibit 5.1)

 *23.2    -       Consent of Arthur Andersen LLP with respect to the 
                  financial statements of GulfMark Offshore, Inc.
</TABLE>
                 
- ---------------
*Filed herewith

                                                         




<PAGE>   1
                                                                   EXHIBIT 4.5.3

                            GULFMARK OFFSHORE, INC.

          AMENDED AND RESTATED INSTRUMENT OF ASSUMPTION AND ADJUSTMENT
        (GulfMark International Inc. 1987 Stock Option Plan, as amended)

         This Amended and Restated Instrument of Assumption and Adjustment (the
"Assumption") dated effective as of May 1, 1997 is executed by GULFMARK
OFFSHORE, INC., a Delaware corporation ("New GulfMark") and amends, restates and
supercedes in its entirety that certain Instrument of Assumption and Adjustment
dated as of April 30, 1997 executed by New GulfMark in accordance with the
provisions of that certain Agreement and Plan of Distribution dated December 5,
1995 ("Distribution Agreement") by and among GULFMARK INTERNATIONAL, INC.
("GulfMark"), New GulfMark and ENERGY VENTURES, INC. ("EVI") in connection with
the stock distributions described below.  All capitalized terms in this
Assumption shall have the meaning assigned them in this preamble or in Paragraph
2, as applicable.

         1.      Purpose.  The purpose of this Assumption is to effect (a) the
adoption and assumption by New GulfMark of the GulfMark Stock Option Plan as of
the Distribution Date, (b) the assumption by New GulfMark of, and the
substitution of New GulfMark Common Stock for GulfMark Common Stock with
respect to, each outstanding GulfMark Stock Option as of the Distribution Date,
(c) an adjustment in the exercise price and number of shares subject to each
outstanding GulfMark Stock Option as of the Distribution Date in accordance
with the requirements of Section 424 of the Code, as required by the
Distribution Agreement, to preserve the aggregate intrinsic value of each
option and the ratio of the exercise price to the market value per share, and
(d) an adjustment in the aggregate number of shares issued or reserved for
issuance pursuant to the Assumed Stock Option Plan in accordance with the
antidilution adjustment provisions of the GulfMark Stock Option Plan.

         2.      Definitions.  Capitalized terms shall have the meanings
ascribed to such terms in the preamble to this Assumption and as follows:

                 (a)      Assumed Stock Option Plan:  the GulfMark
         International, Inc. 1987 Stock Option Plan, as amended, as assumed and
         adopted by New GulfMark from and after the Distribution Date.

                 (b)      Code:  the Internal Revenue Code of 1986, as amended,
         and the regulations promulgated thereunder.

                 (c)      Distribution:  the distribution by GulfMark of all
         the outstanding shares of New GulfMark Common Stock to the
         stockholders of record of GulfMark Common Stock as of the record date
         for the Distribution at the rate of two shares of New GulfMark Common
         Stock per share of GulfMark Common Stock.

                 (d)      Distribution Date:  April 30, 1997.

                 (e)      GulfMark Common Stock:  the common stock, par value
         $1.00 per share, of GulfMark.
<PAGE>   2
                 (f)      GulfMark Stock Option:  any option to purchase shares
         of GulfMark Common Stock outstanding under the GulfMark Stock Option
         Plan immediately prior to the Distribution Date.

                 (g)      GulfMark Stock Option Agreement:  any agreement
         between GulfMark and a holder of GulfMark Stock Options granted
         pursuant to the GulfMark Stock Option Plan.

                 (h)      GulfMark Stock Option Plan:  the GulfMark
         International, Inc. 1987 Stock Option Plan, as amended.

                 (i)      New GulfMark Adjusted Stock Option:  any GulfMark
         Stock Option, as adjusted and assumed by New GulfMark pursuant to this
         Assumption from and after the Distribution Date.

                 (j)      New GulfMark Common Stock:  the common stock, $.01
par value per share, of New GulfMark.

         3.      Assumption of GulfMark Stock Option Plan.  As of the
Distribution Date, New GulfMark hereby adopts and assumes the GulfMark Stock
Option Plan, all outstanding GulfMark Stock Options granted thereunder, and all
GulfMark Stock Option Agreements relating to outstanding GulfMark Stock Options
granted pursuant to the GulfMark Stock Option Plan.  From and after the
Distribution Date,

                 (a)      All references to the "Company" in the GulfMark Stock
         Option Plan and in any GulfMark Stock Option Agreement shall mean New
         GulfMark.

                 (b)      All references to "Common Stock" in the GulfMark
         Stock Option Plan and in any GulfMark Stock Option Agreement shall
         mean the New GulfMark Common Stock.

                 (c)      All references to "Plan" in the GulfMark Stock Option
         Plan or in any GulfMark Stock Option Agreement shall mean the Assumed
         Stock Option Plan.

         4.      Treatment of Outstanding GulfMark Stock Options.  Effective as
of the Distribution Date, each outstanding GulfMark Stock Option shall
constitute a New GulfMark Adjusted Stock Option to purchase New GulfMark Common
Stock, and in accordance with the antidilution adjustment provisions of the
GulfMark Stock Option Plan, the number of shares covered by, and the exercise
price of, each GulfMark Stock Option, and the remaining terms and conditions of
each outstanding GulfMark Stock Option shall be adjusted as follows:

                 (a)      The grant date of each New GulfMark Adjusted Stock
         Option shall be the date of grant of the GulfMark Stock Option
         replaced thereby, and the expiration date of each New GulfMark
         Adjusted Stock Option shall be the expiration date of the GulfMark
         Stock Option replaced thereby.





                                     - 2 -
<PAGE>   3
                 (b)      The number of shares of New GulfMark Common Stock
         covered by each New GulfMark Adjusted Stock Option shall be the number
         of shares covered by the GulfMark Stock Option being replaced thereby,
         multiplied by a fraction equal to the ratio of the pre-Distribution
         market price per share of GulfMark Common Stock to the
         post-Distribution market price per share of New GulfMark Common Stock.

                 (c)      The per share exercise price of each New GulfMark
         Adjusted Stock Option shall be the exercise price per share of the
         GulfMark Stock Option being replaced thereby, multiplied by a fraction
         equal to the ratio of the post-Distribution market price per share of
         the New GulfMark Common Stock to the pre-Distribution market price per
         share of GulfMark Common Stock.

                 (d)      For purposes of the foregoing adjustments, (i) the
         pre-Distribution market price per share of GulfMark Common Stock shall
         be deemed to be the closing price per share of GulfMark Common Stock
         as reported by The Nasdaq Stock Market on the last day on which
         GulfMark Common Stock is traded on The Nasdaq Stock Market, and (ii)
         the post-Distribution market price per share of New GulfMark Common
         Stock shall be deemed to be the closing price per share of New
         GulfMark Common Stock as reported by The Nasdaq Stock Market on the
         first day on which New GulfMark Common Stock is traded on The Nasdaq
         Stock Market following the Distribution.

                 (e)      The vesting and exercise provisions of each New
         GulfMark Adjusted Stock Option shall be identical to the vesting and
         exercise provisions of the GulfMark Stock Option replaced thereby.

                 (f)      The remaining terms and conditions of each New
         GulfMark Adjusted Stock Option shall be substantially the same as in
         effect for the GulfMark Stock Option replaced thereby; provided,
         however, that service with GulfMark prior to the Distribution shall be
         treated under each New GulfMark Adjusted Stock Option as service with
         New GulfMark.

         5.      Adjustment of Aggregate Number of Option Shares.  Pursuant to
the antidilution adjustment provisions of the GulfMark Stock Option Plan, the
total number of option shares that may be granted pursuant to the Assumed Stock
Option Plan shall be as follows:





                                     - 3 -
<PAGE>   4
<TABLE>
<CAPTION>
                                                    GulfMark Stock                 New GulfMark Assumed
                                                      Option Plan                   Stock Option Plan
                                                (Originally Authorized)              (As Adjusted)
                                                 ---------------------                ----------- 
         <S>                                             <C>                          <C><C>      <C>
         Option Shares Exercised                          32,567                          32,567
         Option Shares Outstanding                        37,000                         [     ]  *
         Option Shares Available                         130,433                         260,866  **
                                                         -------                         -------    
                 Total                                   200,000                         [     ]  ***
                                                         =======                         =======     
</TABLE>

         *To be supplied by post-Distribution Date exhibit on May 2, 1997, with
         each outstanding GulfMark Stock Option being adjusted in accordance
         with Section 424 of the Code, as required by the Distribution
         Agreement and as set forth in Section 4(b) above, to preserve
         aggregate intrinsic value and the ratio of the exercise price to the
         market value per share.

         **Each remaining option share being adjusted to reflect the
         Distribution of two shares of New GulfMark Common Stock per share of
         GulfMark Common Stock.

         ***To be supplied by post-Distribution Date exhibit on May 2, 1997.

         6.      Intent of Option and Plan Adjustments.  The adjustments to
each outstanding GulfMark Stock Option are designed solely to preserve the
aggregate intrinsic value of each option and the ratio of the exercise price to
the market value per share, in accordance with the requirements of Section 424
of the Code, as required by the Distribution Agreement and as permitted by
Article VIII of the GulfMark Stock Option Plan.  The adjustments to the
aggregate number of shares issued and reserved for issuance pursuant to the
GulfMark Stock Option Plan are designed solely (i) to give effect to the
adjustment in outstanding option shares described above, and (ii) to reflect
the two-for-one nature of the Distribution.

         7.      Termination of GulfMark Obligations.  From and after the
Distribution Date, all obligations of GulfMark pursuant to (i) the GulfMark
Stock Option Plan, (ii) all outstanding GulfMark Stock Options granted
thereunder, and (iii) all GulfMark Stock Option Agreements relating to
outstanding GulfMark Stock Options granted pursuant to the GulfMark Stock
Option Plan, respectively, shall terminate, and neither GulfMark nor EVI shall
have any further obligation whatsoever thereunder.

         8.      Miscellaneous.  This Assumption is executed and shall
constitute an instrument supplemental to the GulfMark Stock Option Plan and
shall be construed with and as a part of the GulfMark Stock Option Plan.
Except as modified and expressly amended by this Assumption and any other
supplement or amendment, the GulfMark Stock Option Plan is in all respects
adopted, assumed, ratified and confirmed by New GulfMark, and all of the terms
provisions and conditions thereof, as supplemented hereby, shall be and remain
in full force and effect.





                                     - 4 -
<PAGE>   5
                 DATED effective as of May 1, 1997.

                                GULFMARK OFFSHORE, INC.
                                
                                
                                
                                By: /s/ FRANK R. PIERCE
                                   -----------------------------------------
                                   Frank R. Pierce, Executive Vice President





                                     - 5 -
<PAGE>   6
                                   EXHIBIT A
                   TO INSTRUMENT OF ASSUMPTION AND ADJUSTMENT
        (GULFMARK INTERNATIONAL INC. 1987 STOCK OPTION PLAN, AS AMENDED)


<TABLE>
<CAPTION>
                                                    GulfMark Stock                 New GulfMark Assumed
                                                      Option Plan                   Stock Option Plan
                                                (Originally Authorized)              (As Adjusted)
                                                 ---------------------                ----------- 
         <S>                                             <C>                             <C>      <C>
         Option Shares Exercised                          32,567                          32,567
         Option Shares Outstanding                        36,100                         177,389  *
         Option Shares Available                         131,333                         262,666  **
                                                         -------                         -------    
                 Total                                   200,000                         472,621
                                                         =======                         =======
</TABLE>
         *Each outstanding GulfMark Stock Option being adjusted in accordance
         with Section 424 of the Code, as required by the Distribution
         Agreement and as set forth in Section 4(b) above, to preserve
         aggregate intrinsic value and the ratio of the exercise price to the
         market value per share.

         **Each remaining option share being adjusted to reflect the
         Distribution of two shares of New GulfMark Common Stock per share of
         GulfMark Common Stock.





                                     - 6 -

<PAGE>   1
                                                                    EXHIBIT 5.1



                            GRIGGS & HARRISON, P.C.
                           1301 McKinney, Suite 3200
                           Houston, Texas 77010-3033
                           Telephone -- 713-651-0600
                           Facsimile -- 713-651-1944




                                August 15, 1997

GulfMark Offshore, Inc.
5 Post Oak Park, Suite 1170
Houston, Texas  77027


         Re:      Stock Option Plans and Stock Option Policy


Gentlemen:

         We have acted as counsel for GulfMark Offshore, Inc., a Delaware
corporation (the "Company"), in connection with the following stock option plans
and policy:

            Amended and Restated 1993 Non-Employee Director Stock Option Plan
            1987 Stock Option Plan
            1988 Non-Employee Director Option Policy

as amended (the "Plans and Policy"). We have examined such documents, records
and matters of law as we have deemed necessary for purposes of this opinion, and
based thereupon, we are of the opinion that the shares of the Company's Common
Stock, par value $.01 per share, when issued pursuant to the Plans and Policy in
accordance with the terms and provisions thereof, will be duly authorized,
validly issued, fully-paid and nonassessable.

         We hereby consent to the filing of this opinion as Exhibit 5.1 to the
Form S-8 Registration Statement filed by the Company to effect registration of
the shares issued pursuant to the Plans and Policy under the Securities Act of
1933.

                                              Very truly yours,

                                              GRIGGS & HARRISON, P.C.

                                              /s/  Griggs & Harrison, P.C.


<PAGE>   1
                                                                    EXHIBIT 23.2


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation by
reference in this Registration Statement on Form S-8 of our report dated May 30,
1997 on GulfMark Offshore, Inc.'s financial statements for the year ended
December 31, 1996, included in GulfMark Offshore, Inc.'s final Prospectus filed
pursuant to Rule 424(b) on August 15, 1997, and all references to our Firm
included in this Registration Statement.

ARTHUR ANDERSEN LLP

Houston, Texas
August 15, 1997



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