1




                                FIRST  AMENDMENT
                                       TO
                          AGREEMENT AND PLAN OF MERGER


         THIS FIRST AMENDMENT TO AGREEMENT AND PLAN OF MERGER (this "First
Amendment") dated as of March  28,  1997 is by and among ENERGY VENTURES, INC.,
a Delaware corporation, GULFMARK ACQUISITION CO., a Delaware corporation and
wholly-owned subsidiary of EVI, GULFMARK INTERNATIONAL, INC., a Delaware
corporation ("GulfMark"), and GULFMARK OFFSHORE, INC. (formerly known as New
GulfMark International, Inc.), a Delaware corporation and wholly-owned
subsidiary of GulfMark.

                               R E C I T A L S :

         WHEREAS, the parties to this First Amendment are parties to that
certain Agreement and Plan of Merger dated December 5, 1996 (the "Agreement");
and

         WHEREAS, the parties to this First Amendment desire to amend the
Agreement as provided herein;

         NOW, THEREFORE, in consideration of the premises and of the respective
covenants, agreements, representations, and warranties set forth herein and in
the Agreement, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:


1.       Section 7.1(b)(i) of the Agreement is hereby amended to read in its
         entirety as follows:

         "(i)    the Merger has not been consummated on or before May 31, 1997
                 (provided that the right to terminate this Agreement under
                 this clause (i) shall not be available to any party whose
                 breach of any representation or warranty or failure to fulfill
                 any covenant or agreement under this Agreement has been the
                 cause of or resulted in the failure of the Merger to occur on
                 or before such date);"

2.       Sections 5.7(a) and 5.7(d) are hereby amended in their entirety to
         read as follows:

         "(a)    GulfMark shall take action prior to the Merger and the
                 Distribution to cause the GulfMark Options to be assumed by
                 Spinco and converted into or exchanged for and represent
                 options to purchase Spinco Common Stock and to cause the
                 GulfMark Plans to be transferred to and assumed by Spinco,
                 such that all obligations of GulfMark thereunder are
                 terminated, and neither GulfMark nor EVI will have any
                 obligations under the GulfMark Plans following the Merger."
   2
         "(d)    Within  180 days following the Effective Time, Spinco shall
                 file a registration statement on Form S-8 (or other
                 appropriate form) with respect to the shares of Spinco Common
                 Stock subject to the adjusted and assumed GulfMark Options,
                 and shall use its best efforts to maintain the effectiveness
                 of such registration statement (and maintain the current
                 status of any prospectus contained therein) for so long as any
                 of such options remain outstanding."

3.       Capitalized terms used but not defined herein shall have the meanings
ascribed to them in the Agreement.  Except as otherwise expressly provided
herein, the Agreement and the other agreements referred to therein are not
amended, modified or affected by this First Amendment.  Except as expressly set
forth herein, all of the terms, conditions, covenants, representations,
warranties and all other provisions of the Agreement are herein ratified and
confirmed and shall remain in full force and effect.

4.       On and after the date on which this First Amendment becomes effective,
the terms, "this Agreement," "hereof," "herein," "hereunder" and terms of like
import, when used herein or in the Agreement shall, except where the context
otherwise requires, refer to the Agreement, as amended by this First Amendment.

5.       This First Amendment may be executed in two or more counterparts, and
it shall not be necessary that the signatures of all parties hereto be
contained on any one counterpart hereof; each counterpart shall be deemed an
original, but all of which together shall constitute one and the same
instrument.


         IN WITNESS WHEREOF, the parties hereto have executed this First
Amendment as of the date first above written.


                                   ENERGY VENTURES, INC.
                                       
                                       
                                   By:      /s/ JAMES G. KILEY
                                      ------------------------------------
                                                James G. Kiley
                                      Vice President and Chief Financial Officer
                                       
                                       
                                   GULFMARK ACQUISITION CO.
                                       
                                       
                                   By:       /s/ JAMES G. KILEY
                                      -------------------------------------
                                                 James G. Kiley
                                      Vice President and Chief Financial Officer
                                       

                                      2

   3
      
  
                                       GULFMARK INTERNATIONAL, INC.
                                       
                                       
                                       By:       /s/ FRANK R. PIERCE        
                                          -------------------------------------
                                                     Frank R. Pierce
                                                Executive Vice President
                                       
                                       
                                       GULFMARK OFFSHORE, INC.
                                       
                                       
                                        By:      /s/ FRANK R. PIERCE   
                                           ------------------------------------
                                                     Frank R. Pierce
                                                Executive Vice President
                                       



                                       3