This Agreement is made and entered into this 19th day of
     December, 1996, by and between SEACOR Holdings, Inc., acting as agent
     for and on behalf of all of its direct and indirect controlled
     subsidiaries (herein, collectively, the "Seacor Group") and Smit
     Internationale NV, acting as agent for and on behalf of all of its
     direct and indirect controlled subsidiaries (herein, collectively, the
     "Smit Group"). 

     Recitals:

          A.   Certain members of each of the Seacor Group and Smit Group
     have entered into an Asset Purchase Agreement, dated as of 19th day of
     December, 1996 (the "Purchase Agreement") wherein certain Seacor Group
     members acquired from certain members of the Smit Group all of the
     Offshore Vessels (as defined in the Purchase Agreement) owned by the
     Smit Group.

          B.   In connection therewith, the Seacor Group has agreed to make
     the Offshore Vessels and other of its vessels available to the Smit
     Group under certain conditions and the Smit Group has agreed to
     provide the Seacor Group vessels an opportunity to bid on and
     participate in certain of the Smit Group's activities.

          NOW, THEREFORE, in consideration of the representations,
     warranties, and covenants contained herein and in the Purchase
     Agreement, and other good and valuable consideration receipt of which
     is hereby acknowledged, the parties hereto agree as follows:

          1.   The Seacor Group agrees that it will make its entire fleet
     of vessels available to Sellers on a first priority basis for use in
     salvage and other non-conventional maritime activities, within the
     field of business of the Smit Group, subject to any commitments which
     the Seacor Group has to third parties, and on the terms and conditions
     hereinafter provided.  The Seacor Group shall make its weekly
     chartering report covering the location of its vessels available to
     Sellers on a regular basis. 

          2.   (a) In the event that the Smit Group wishes to engage a
     Seacor Group vessel for a salvage operation, then the Smit Group will
     give a representative of the Seacor Group designated in each area who
     can obtain a prompt response, notice as to (i) the type of vessel
     required, (ii) location of the operation, (iii) the expected
     commencement time for the operation, and (iv) the expected time period
     for completion of the operation.  The Seacor Group will use its best
     endeavors to make such vessel or vessels available to the Smit Group
     as it may require for a specific





     

     salvage operation including making vessels available, which are
     already readily available, and also making such arrangements within
     its fleet and with its customers to make available the most suitable
     vessels for a specific operation, subject to the parties' agreement as
     to compensation payable for such operation. 

          (b)  The compensation payable for a vessel to be engaged in a
     salvage operation shall be twice the prevailing market time charter
     rate for such vessel if such vessel is at the time employed, or, if it
     is not then employed, shall be twice the prevailing market time
     charter rate for vessels of similar class, specifications and trading
     patterns during the preceding 90 days; provided that such charter rate
     shall not exceed $35,000 per day.  Such compensation shall include
     operating expenses and all remuneration payable to the crew, but
     charterer shall pay fuel and lubes.

          (c)  As promptly as possible following receipt of the notice
     referred to above, the Seacor Group shall notify the Smit Group of (i)
     the vessel or vessels it has available for the operation, (ii) the
     compensation payable for such vessel or vessels as determined in
     accordance with the foregoing paragraph, and (iii) whether
     arrangements must be made with customers for the release of any such
     vessel or vessels before it can participate in the proposed salvage
     operations.

          (d)  Upon receipt of such notice from the Seacor Group, the Smit
     Group and the Seacor Group shall jointly determine which vessel or
     vessels, if any, are to be used in the salvage operation.  Any vessels
     to be used in such operations shall be time chartered to the Smit
     Group for the agreed period of time based on a standard BIMCO
     Supplytime or Towhire charter party, or such other form of time
     charter party as may be appropriate under the circumstances, in either
     case with a 'no claim for salvage' provision, and such indemnities,
     and other provisions as a prudent owner would request taking into
     account the nature of the work, the risk involved, the flag of the
     vessel, the nationality of the crew and their articles of employment. 
     Such indemnities may include, for example, indemnities of the owner
     without recourse to the owner, its servants or agents, other than due
     to gross negligence or willful misconduct of the owner, for (a) claims
     by charterer, the salved vessel or its owner or any third parties for
     injury, loss or damage resulting from the salvage operation or
     resulting to the salved or towed object, (b) excess claims for salvage
     bonus by the crew on the Seacor Group vessel, other than for a pro
     rata share of the daily hire paid to the Seacor Group above the going
     market rate, (c) additional



     

     insurance costs to the owners; provided that the owner shall also
     agree to render reasonable assistance without making any additional
     claim for salvage to reconnect a towline if the salved object or tow
     breaks away during the course of any towage service.  All compensation
     payable under the time charter shall be due and payable as provided in
     such time charter and shall not be dependent on the receipt of payment
     by the Smit Group for its salvage services.

          (e)  Immediately following completion of any salvage operation in
     which a Seacor Group vessel participates, the Seacor Group shall allow
     the Smit Group reasonable access to the log books of the vessel
     chartered and to the Master and crew on board the vessel to take
     statements concerning the salvage operation. 

          (f)  The Seacor Group agrees not to offer vessels to third party
     salvors unless the Smit Group has not been awarded the salvage work.

          3.   (a) In the event that the Smit Group wishes to engage a
     Seacor Group vessel for an operation other than a salvage operation,
     including but not limited to wreck removal, offshore contracting and
     installation, towage, and similar operations, then the Smit Group will
     give the Seacor Group notice as to (i) the type of vessel required,
     (ii) the location of the operation, (iii) the expected commencement
     date of the operation, and (iv) the expected time period for
     completion of the operation; provided that if the Smit Group is
     seeking tenders from several parties, then the Seacor Group will be
     given an opportunity to respond to such tender on the same terms and
     conditions as the other parties.

          (b)  The Seacor Group will respond in the time prescribed in
     paragraph 2(a) specifying the compensation to be paid, based on the
     prevailing market conditions for such vessel, including, but not
     limited to, considerations as to rate, job duration, anticipated
     commencement date, and regional location of the work.  The parties
     agree to discuss all the commercial considerations, but, in any event,
     the Seacor Group shall have the absolute right to decline any such
     business in its sole discretion.

          4.   The Smit Group agrees that it will give the Seacor Group an
     opportunity to provide environmental services on a preferred basis in
     conjunction with the Smit Group's salvage, maritime contracting, and
     ports and harbor activities, to the extent that such services cannot
     be provided using the Smit Group's own equipment and personnel.




     

          5.   In the event that the Smit Group shall have sought bids or
     tenders from several parties in connection with any of the activities
     referred to herein, the Smit Group hereby agrees to permit the Seacor
     Group an opportunity to review and meet the terms and conditions of
     the party to whom the Smit Group intends to award the contract.

          6.   Any notices provided for herein shall be given as follows: 

               To Seacor Group: 

                                  Watchstander
                               Seacor Marine, Inc.
                           11200 Westheimer, Suite 900
                              Houston, Texas 77042
                               Tel:  281 782 5990
                               Fax:  281 782 5991

               To Smit Group:  

                               Salvage Watchmaster
                            Smit Internationale N.V.
                                  Zalmstraat 1
                                3016 DS Rotterdam
                                 The Netherlands
                              Tel:  31 10 454 9911
                              Fax:  31 10 454 9268

          In Witness Whereof, the parties hereto have duly executed this
     Agreement as of the date first above written.

                                   SEACOR HOLDINGS, INC., 
                                       as agent



                                   By: /s/Keith Gregory               
                                       -------------------------------
                                       Name:  Keith Gregory
                                       Title: Vice President   


                                   SMIT INTERNATIONALE N.V.,
                                       as agent



                                   By: /s/Karel Kaffa                 
                                       -------------------------------
                                       Name:  Karel Kaffa
                                       Title: Area Manager




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