INVESTMENT AND REGISTRATION RIGHTS AGREEMENT


          INVESTMENT AND REGISTRATION RIGHTS AGREEMENT, dated December 19,
     1996 (this "Agreement"), among SEACOR Holdings, Inc., a Delaware
     corporation (the "Company"), and Smit International Overseas B.V., a
     corporation organized under the laws of The Netherlands (initially the
     "Holder"; together with other holders from time to time of Registrable
     Securities (as defined herein) hereunder, the "Holders").

                              W I T N E S S E T H :
                              -------------------
          WHEREAS, pursuant to the terms set forth in a certain asset
     purchase agreement of even date herewith (the "Purchase Agreement"),
     among the Company, the subsidiaries of the Company listed on Exhibit A
     thereto, SMIT Internationale N.V., a corporation organized under the
     laws of The Netherlands ("SMIT"), and the subsidiaries of SMIT listed
     on Exhibit B thereto, providing for the issuance and sale by the
     Company of (i) a number (determined as set forth in the Purchase
     Agreement) of shares of common stock, $.01 par value per share (the
     "Common Stock"), of the Company (the "Shares") and (ii) an aggregate
     principal amount (determined as set forth in the Purchase Agreement)
     of 5-3/8% Convertible Subordinated Notes due November 15, 2006 of the
     Company (the "Notes"; the Shares, the Notes and the shares of Common
     Stock issuable upon conversion of the Notes referred to collectively
     as the "Securities"); and

          WHEREAS, pursuant to the Purchase Agreement, the Holder shall
     receive such number and type of Securities set forth opposite such
     Holder's name, as applicable, on Annex I hereto plus such additional
     Securities as shall be issuable after the date hereof pursuant to the
     Purchase Agreement (and promptly after each such issuance Annex I
     shall be amended by the parties hereto to reflect such issuance);

          WHEREAS, the Securities will be issued and sold to the Holders
     pursuant to the Purchase Agreement without registration under the
     Securities Act in reliance on one or more applicable exemptions from
     such registration, and the Company and the Holders desire to provide
     for the registration of the resale by the Holders of Registrable
     Securities (as hereinafter defined) from time to time, upon the terms
     and subject to conditions set forth below; and

          WHEREAS, it is intended by the Company and the Holders that this
     Agreement shall become effective immediately upon the issuance and
     sale to the Holder of Securities pursuant to the Purchase Agreement.







     

          NOW, THEREFORE, in consideration of the foregoing and the mutual
     covenants herein contained, the parties hereto, intending to be
     legally bound, hereby agree as follows:

          Section 1.     Certain Other Definitions.  All capitalized terms
                         -------------------------
     used but not defined in this Agreement shall have the respective
     meanings ascribed to such terms in the Purchase Agreement.  As used in
     this Agreement, the following capitalized terms (in their singular and
     plural forms, as applicable) have the following meanings:

               "Business Day" means any day on which commercial banks are
                ------------
     open for business in the City of New York, Borough of Manhattan.

               "Commission" means the United States Securities and Exchange
                ----------
     Commission and any successor United States federal agency or
     governmental authority having similar powers.

               "Exchange Act" means the Securities Exchange Act of 1934, as
                ------------
     amended, and the rules and regulations of the Commission thereunder.

               "Indenture" shall mean that certain indenture, dated as of
                ---------
     November 1, 1996, between the Company and First Trust National
     association, as trustee.

               The terms "register," "registered" and "registration" mean a
                          --------    ----------       ------------
      registration effected by preparing and filing with the Commission a
     registration statement on an appropriate form in compliance with the
     Securities Act, and the declaration or order of the Commission of the
     effectiveness of such registration statement under the Securities Act.

               "Registrable Securities" mean the Securities issued to the
                ----------------------
     Holder pursuant to the Purchase Agreement and any other securities
     issued by the Company after the closing of the transactions
     contemplated by the Purchase Agreement in respect of the Securities
     (and in respect of the Common Stock generally) by means of exchange,
     reclassification, dividend, distribution, split up, combination,
     subdivision, recapitalization, merger, spin-off, reorganization or
     otherwise; provided, however, that as to any Registrable Securities,
                --------  -------
     such securities shall cease to constitute the same for purposes of
     this Agreement if and when (i) a registration statement with respect
     to the sale of such securities shall have been declared effective by
     the Commission and such securities shall have been sold pursuant
     thereto in accordance with the intended plan and method of
     distribution






















     NYFS11...:\93\73293\0013\1711\AGRN216Y.30G



     

     therefor set forth in the final prospectus forming part of such
     registration statement; (ii) such securities shall have been sold in
     satisfaction of all applicable resale provisions of Rule 144 or
     Regulation S under the Securities Act (except a transfer by a Holder
     to an Affiliate thereof); (iii) as expressed in an opinion of
     independent counsel delivered and satisfactory to the Company and the
     transfer agent for the Common Stock, such securities no longer
     constitute "restricted securities" within the meaning of Rule 144
     under the Securities Act and the transfer of such securities neither
     requires registration under the Securities Act nor qualification under
     any state securities or "blue sky" law then in effect, or the use of
     an applicable exemption therefrom; or (iv) such securities cease to be
     issued and outstanding for any reason.

               "Registration Expenses" mean all expenses incurred by the
                ---------------------
     Company in complying with Section 4 hereof, including, without
     limitation, all registration and filing fees (including fees and
     expenses associated with filings required to be made with the National
     Association of Securities Dealers, Inc. and any national securities
     exchange or U.S. automated inter-dealer quotation system of a
     registered national securities association on which the Securities are
     listed or otherwise admitted to unlisted trading privileges), printing
     expenses, if any (including expenses of printing certificates for the
     Securities being registered in a form eligible for deposit with The
     Depository Trust Company and of printing registration statements and
     prospectuses), fees and disbursements of counsel for the Company, fees
     and expenses of compliance with state securities or "blue sky" laws
     (including reasonable fees and expenses of one firm of counsel for
     underwriters, if any, in connection with "blue sky" qualifications of
     the Registrable Securities being registered and the determination of
     eligibility for investment under the laws of such jurisdictions
     designated by the underwriters, if any), accountants' fees and
     expenses (including the expenses of any special audits or "comfort"
     letters incident to or required by any such registration), transfer
     taxes, fees of transfer agents and registrars, and, in connection with
     any Underwritten Offering, fees and disbursements of underwriters
     customarily paid by issuers or sellers of securities, but excluding
     underwriting discounts and commissions and broker-dealer concessions
     and allowances and marketing expenses.

               "Securities Act" means the Securities Act of 1933, as
                --------------
     amended, and the rules and regulations of the Commission thereunder.






























     



     

               "Significant Subsidiary" has the meaning ascribed to such
                ----------------------
     term in Rule 1-02(w) of Regulation S-X under the Securities Act and
     the Exchange Act.

               "Underwritten Offering" means a registration under the
                ---------------------
     Securities Act pursuant to Section 4(b) hereof and pursuant to which
     securities of the Company are sold to an underwriter for reoffering
     and distribution to the public.

          Section 2.     Representations and Warranties of Holders.  Each
                         -----------------------------------------
     Holder severally (and not jointly) hereby represents, acknowledges,
     covenants and agrees as follows:  (i) the Securities are being
     acquired for such Holder's own account for investment purposes only
     and not with a view to any resale in violation of the Securities Act
     or any state securities or "blue sky" law; (ii) to the knowledge of
     such Holder, the Securities have not been registered under the
     Securities Act or any state securities or "blue sky" law; (iii) such
     Holder is an "accredited investor" within the meaning of Rule 501 of
     Regulation D under the Securities Act; (iv) such Holder will not offer
     for sale, sell or otherwise transfer any of the Securities (or any
     interest therein) except upon the terms and subject to the conditions
     specified herein, and otherwise not in violation of the Securities Act
     or any state securities or "blue sky" laws, provided that such Holder,
     prior to effecting any transfer of Securities permitted hereunder
     (other than a transfer of Securities following which such Securities
     shall cease to constitute Registrable Securities pursuant to a sale
     described in clause (i) or (ii) of the proviso contained in the
     definition of "Registrable Securities"), will cause the intended
     transferee of the Securities to agree to take and hold such Securities
     subject to the terms and conditions of this Agreement (and, in that
     connection, to execute and deliver to the Company such agreements and
     instruments as the Company reasonably may request to evidence the
     same), and further acknowledges that the certificates evidencing such
     Securities are required to have endorsed thereon a legend to the
     effect set forth in Section 3(a) hereof; (v) in making such Holder's
     decision to invest in the Registrable Securities, such Holder has
     relied upon independent investigations made by such Holder and, to the
     extent believed by him or it to be appropriate, has relied on
     investigations made by such Holder's representatives, including such
     Holder's own legal, accounting, investment, financial, tax and other
     professional advisors; (vi) such Holder has been afforded an
     opportunity to review all of the Company's reports filed by the
     Company under the Exchange Act since January 1, 1994 (the "Public
     Filings"); and (vii) such Holder and such Holder's purchaser
     representatives, as applicable, have been given the opportunity


























     



     

     to examine all documents, including the Public Filings, and to ask
     questions of, and to receive answers from, the Company and its
     representatives concerning the terms of the Purchase Agreement and
     such Holder's investment in the Securities.






































































     



     

          Section 3.     Restrictions on Transfer.
                         ------------------------
               (a)  Legend.  (i)  Each certificate representing the Shares
                    ------
     shall have endorsed thereon a legend in substantially the following
     form:

          "THE SHARES OF COMMON STOCK REPRESENTED BY THIS CERTIFICATE HAVE
          NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF
          1933, AS AMENDED (THE "ACT"), OR ANY OTHER FEDERAL OR STATE
          SECURITIES OR BLUE SKY LAWS, AND HAVE BEEN ISSUED IN A MANNER
          INTENDED TO COMPLY WITH THE CONDITIONS CONTAINED IN REGULATION S
          UNDER THE ACT.  PRIOR TO JANUARY 29, 1997, NO OFFER, SALE,
          TRANSFER, PLEDGE OR OTHER DISPOSITION (COLLECTIVELY, A
          "DISPOSAL") OF THE SHARES OF COMMON STOCK REPRESENTED BY THIS
          CERTIFICATE MAY BE MADE (A) IN THE UNITED STATES OR TO, OR FOR
          THE ACCOUNT OR BENEFIT OF, ANY "U.S. PERSON" (AS DEFINED IN RULE
          902(O) OF REGULATION S) UNLESS (I) REGISTERED UNDER THE ACT AND
          ANY APPLICABLE STATE SECURITIES OR BLUE SKY LAWS OR (II) SEACOR
          HOLDINGS, INC. ("SEACOR") RECEIVES A WRITTEN OPINION OF UNITED
          STATES LEGAL COUNSEL IN FORM AND SUBSTANCE SATISFACTORY TO IT TO
          THE EFFECT THAT SUCH DISPOSAL IS EXEMPT FROM SUCH REGISTRATION
          REQUIREMENTS OR (B) OUTSIDE THE UNITED STATES OR TO, OR FOR THE
          ACCOUNT OR BENEFIT OF, ANY PERSON WHO IS NOT A "U.S. PERSON"
          UNLESS PRIOR TO SUCH DISPOSAL (I) THE BENEFICIAL OWNER OF SUCH
          SHARES AND THE PROPOSED TRANSFEREE SUBMIT CERTAIN CERTIFICATIONS
          TO SEACOR (FORMS OF WHICH ARE AVAILABLE FROM SEACOR AT ITS
          PRINCIPAL EXECUTIVE OFFICES) AND (II) SEACOR RECEIVES THE LEGAL
          OPINION DESCRIBED IN (A)(II) ABOVE.

          AFTER JANUARY 29, 1997, THE SHARES OF COMMON STOCK     CAN BE
          SOLD IN THE UNITED STATES ONLY IF REGISTERED OR   IF AN EXEMPTION
          FROM REGISTRATION IS AVAILABLE."

                    (ii) Each certificate representing the Notes shall have
     endorsed thereon a legend in substantially the following form:

          "THE NOTES AND SHARES OF COMMON STOCK ISSUABLE UPON
          CONVERSION THEREOF REPRESENTED BY THIS CERTIFICATE HAVE NOT
          BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
          AMENDED, OR ANY STATE SECURITIES LAW, AND MAY NOT BE
          TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF IN THE ABSENCE OF
          SUCH REGISTRATION UNLESS PURSUANT TO AN AVAILABLE EXEMPTION
          THEREFROM.  IN ALL CASES, SUCH NOTES AND SHARES OF COMMON
          STOCK ISSUABLE UPON CONVERSION THEREOF MAY BE TRANSFERRED
          ONLY IN























     




     



     

          COMPLIANCE WITH THE CONDITIONS SPECIFIED IN THE INVESTMENT AND
          REGISTRATION RIGHTS AGREEMENT DATED DECEMBER 19, 1996, AMONG THE
          COMPANY AND THE STOCKHOLDERS PARTY THERETO, A COPY OF WHICH IS
          AVAILABLE FOR INSPECTION AT THE PRINCIPAL EXECUTIVE OFFICES OF
          THE COMPANY AND WILL BE FURNISHED TO THE HOLDER HEREOF WITHOUT
          CHARGE, UPON WRITTEN REQUEST TO SEACOR HOLDINGS, INC., 11200
          WESTHEIMER, SUITE 850, HOUSTON, TEXAS 77042, ATTENTION: 
                                                       ---------
          SECRETARY."

               (b)  The Company and/or the registrar and transfer agent for
     the Securities will not be required to accept for registration of
     transfer any Securities acquired by the Holders except upon
     presentation of evidence reasonably satisfactory to the Company and
     the transfer agent, which may include an opinion of counsel and
     representations of the transferee to the effect of clauses (i) through
     (vi) of Section 2 hereof, to the effect that the transfer is being
     made in compliance with the Securities Act and any applicable state
     securities or "blue sky" law, provided, however, that no opinion of
                                   --------  -------
     counsel shall be required in respect of a transfer by a Holder to one
     or more of its Affiliates.

          Section 4.     Registration under Securities Act, etc.
                         ---------------------------------------
               (a)  Shelf Registration.  (i)  General.  The Company shall
                    ------------------        -------
     (A) prepare and file with the Commission as soon as practicable after
     the issuance to the Holders of the Securities pursuant to the Purchase
     Agreement, a registration statement on Form S-3 (or on another
     appropriate form under the Securities Act then available for use by
     the Company in connection with a secondary offering of the Registrable
     Securities pursuant to Rule 415 under the Act) relating to the resale,
     from time to time, of the Registrable Securities by the Holders in
     accordance with the plan and method of distribution set forth in the
     prospectus forming part of such registration statement (a "Shelf
     Registration Statement"); (B) furnish to each Holder a copy of the
     Shelf Registration Statement prior to filing the same with the
     Commission and shall not file such Shelf Registration Statement if any
     such requesting Holder shall reasonably have objected to in writing on
     the grounds that such Shelf Registration Statement does not comply in
     all material respects with the requirements of the Securities Act or
     of the rules or regulations thereunder or otherwise inaccurately
     describes information pertaining to such Holder; and (C) shall use
     reasonable commercial efforts to cause the Shelf Registration
     Statement to be declared effective by the Commission as soon as
     reasonably practicable after the same has been filed with the
     Commission.  It is understood and agreed that the Shelf


























     



     

     Registration Statement may have included therein shares of Common
     Stock offered for sale, from time to time, by holders of Common Stock
     other than the Holders and also may relate to a primary offering of
     Common Stock by the Company.

                    (ii) Effective Period.  The Company agrees to use its
                         ----------------
     best efforts to keep the Shelf Registration Statement continuously
     effective until the first to occur of (A) the third anniversary of the
     date on which such Shelf Registration Statement was first declared
     effective by the Commission and (B) the date on which all the
     Registrable Securities covered by the Shelf Registration Statement
     have been sold pursuant thereto or may be sold pursuant to Rule 144(k)
     under the Securities Act (or any successor rule thereof), assuming for
     this purpose that the Holders thereof are not Affiliates of the
     Company (in any such case, such period being called the "Effective
     Period").  Each Holder agrees that it will not sell any Registrable
     Securities pursuant to the Shelf Registration Statement during any
     Suspension Period (as hereinafter defined) and the Company agrees to
     cause each Suspension Period to end as soon as reasonably practicable. 
     The Company agrees that no other holder of the Common Stock or
     securities convertible into or exchangeable or exercisable for Common
     Stock will be permitted to sell such securities of the Company
     pursuant to a shelf registration statement during a Suspension Period
     (other than for securities to be offered in a transaction of the type
     contemplated by Rule 145 under the Securities Act or securities to be
     sold by employees of the Company pursuant to any employee benefit
     plan).  For purposes hereof, "Suspension Period" shall mean a period
     of time commencing on the date on which the Company provides notice
     that the Shelf Registration Statement is no longer effective, that the
     prospectus included in the Shelf Registration Statement no longer
     complies with the requirements therefor prescribed by Section 10(a) of
     the Securities Act, or that the Company in its reasonable, good faith
     judgment, for valid business purposes (including, without limitation,
     in connection with a proposed or pending issuance or sale of the
     Company's debt or equity securities by the Company or any other person
     or a proposed or pending merger, reorganization, consolidation,
     recapitalization, public offering, sale of assets or other
     extraordinary corporate transaction, whether or not publicly
     announced, involving the Company or any of its Significant
     Subsidiaries) has elected to require the suspension of the sale by
     Holders of their Registrable Securities pursuant to the Shelf
     Registration Statement, and shall end on the date when each Holder of
     Registrable Securities either receives copies of the supplemented or
     amended prospectus contemplated by Section 4(c)(v) plus an





























     



     

     additional five Business Days or otherwise is advised in writing by
     the Company that use of the prospectus may be resumed.

               (b)  Incidental Registration; Right and/or Requirement to
                    ----------------------------------------------------
     Include the Securities in a Company Registration:  If at any time
     ------------------------------------------------
     after the date hereof and prior to the expiration of the Effective
     Period, the Company proposes to register under the Securities Act on
     any registration form available for the general registration of
     securities to be sold for cash, other than registration statements on
     Form S-4 or S-8 (or any successor form for securities to be offered in
     a transaction of the type contemplated by Rule 145 under the
     Securities Act or to employees of the Company pursuant to any employee
     benefit plan), any of the Company's equity securities or securities
     convertible into or exchangeable for such equity securities, whether
     or not for its own account (other than a secondary offering that is
     not underwritten), the Company promptly shall furnish written notice
     to each Holder of its intention to effect such Securities Act
     registration, together with a reasonable description of such Holder's
     incidental rights under this Section 4(b) (the "Company Piggyback
     Notice").  Upon the written request of a Holder made within ten
     business days after the receipt by it of the Company Piggyback Notice
     (which request shall specify the number of Securities  requested by
     the Holder to be included in such registration (the "Holder Inclusion
     Notice")), the Company shall use its best efforts to cause all such
     Securities specified in the Holder Inclusion Notice to be registered
     under the Securities Act, together with the other securities which the
     Company at the time proposes to register, all to the extent
     practicable to permit the disposition of the Securities pursuant to
     the Company's registration statement in accordance with the methods of
     distribution intended by each Holder.  If the Company thereafter
     reasonably shall determine not to register or to delay the
     registration of its securities, the Company shall provide written
     notice of such determination to each Holder and (x) in the case of a
     determination not to effect a registration pursuant to this Section
     4(b), thereupon shall be relieved of the obligation to register the
     Securities pursuant to this Section 4(b), and (y) in the case of a
     determination to delay a registration pursuant to this Section 4(b),
     thereupon shall be permitted to delay the registration of the
     Securities for the period coincident with the delay in respect of the
     securities being registered for the Company's own account (or the
     account of the other holder(s), if any, in respect of which the
     Company registration contemplated by this Section 4(b) is being
     effected).





























     



     

               (c)  Registration Procedures.  The Company shall:
                    -----------------------
                    (i)  cause any registration statement filed pursuant to
     Section 4 hereof and the related prospectus and any amendment or
     supplement thereto, as of the effective date of such registration
     statement, amendment or supplement, (A) to comply in all material
     respects with the applicable requirements of the Securities Act and
     the rules and regulations of the Commission promulgated thereunder and
     (B) not to contain any untrue statement of a material fact or omit to
     state a material fact required to be stated therein or necessary to
     make the statements therein, in light of the circumstances under which
     they were made, not misleading;

                    (ii) prepare and file with the Commission such
     amendments and supplements to such registration statement and the
     prospectus used in connection with such registration statement as may
     be necessary to keep such registration statement effective and to
     comply with the provisions of the Securities Act with respect to the
     disposition of all Registrable Securities covered by such registration
     statement until, in the case of the Shelf Registration, the expiration
     of the Effective Period and, in the case of any registration statement
     pursuant to Section 4(b), the Company shall otherwise determine or as
     the parties may otherwise agree in connection therewith; and will
     furnish to each Holder a copy of any amendment or supplement to such
     registration statement or prospectus prior to filing the same with the
     Commission and shall not file any such amendment or supplement to
     which any such requesting Holder shall reasonably have objected to in
     writing on the grounds that such amendment or supplement does not
     comply in all material respects with the requirements of the
     Securities Act or of the rules or regulations thereunder or otherwise
     inaccurately describes information pertaining to such Holder;

                    (iii)     furnish to each requesting Holder such number
     of conformed copies of such registration statement and of each such
     amendment and supplement thereto (in each case including all exhibits
     thereto), such number of copies of the prospectus included in such
     registration statement (including each preliminary prospectus), such
     number of the documents, if any, incorporated by reference in such
     registration statement or prospectus, and such number of other
     documents, as such requesting Holder reasonably may request;

                    (iv) use its best efforts to register or qualify the
     Registrable Securities covered by such registration statement under
     such securities or "blue sky" laws of the states of the






























     



     

     United States as each requesting Holder reasonably shall request, to
     keep such registration or qualification in effect for so long as such
     registration statement remains in effect, and to do any and all other
     acts and things which may be necessary or advisable to enable such
     requesting Holder to consummate the disposition in such jurisdictions
     of his or its Registrable Securities covered by such registration
     statement, except that the Company shall not for any such purpose be
     required to qualify generally to do business as a foreign corporation
     in any jurisdiction in which it is not and would not, but for the
     requirements of this Section 4(c)(iv), be obligated to be so
     qualified, or to subject itself to taxation in any such jurisdiction,
     or to consent to general service of process in any such jurisdiction;

                    (v)  immediately notify each Holder, at any time when a
     prospectus or prospectus supplement relating thereto is required to be
     delivered under the Securities Act, upon discovery that, or upon the
     occurrence of any event as a result of which, the prospectus included
     in such registration statement, as then in effect, includes an untrue
     statement of a material fact or omits to state any material fact
     required to be stated therein or necessary to make the statements
     therein, in light of the circumstances under which they were made, not
     misleading, which untrue statement or omission requires amendment of
     the registration statement or supplementing of the prospectus, and, at
     the request of such requesting Holder, prepare and furnish to such
     requesting Holder a reasonable number of copies of a supplement to
     such prospectus as may be necessary so that, as thereafter delivered
     to the purchasers of such Registrable Securities, such prospectus
     shall not include an untrue statement of a material fact or omit to
     state a material fact required to be stated therein or necessary to
     make the statements therein, in the light of the circumstances under
     which they were made, not misleading; provided, however, that with
                                           --------  -------
     respect to Registrable Securities registered pursuant to such
     registration statement each Holder agrees that such Holder will not
     sell any Registrable Securities pursuant to such registration
     statement during the time after the furnishing of the Company's notice
     that the Company is preparing and filing with the Commission a
     supplement to or an amendment of such prospectus or registration
     statement and such period shall be a Suspension Period hereunder;

                    (vi) use reasonable commercial efforts to obtain the
     withdrawal, at the earliest possible time, of any order suspending the
     effectiveness of the Shelf Registration Statement;

                    (vii)     cooperate with the Holders of Registrable
     Securities to facilitate the timely preparation and




























     



     

     delivery of certificates representing Registrable Securities to be
     sold pursuant to the Shelf Registration Statement free of any
     restrictive legends and in such denominations and registered in such
     names as the Holders may request;

                    (viii)    use its best efforts to cause the Shares and
     all shares of Common Stock issuable upon conversion of the Notes to be
     listed on any securities exchange or quoted on any quotation system on
     which any shares of Common Stock are listed;

                    (ix) comply with all applicable rules and regulations
     of the Commission, and make available to holders of its securities, as
     soon as reasonably practicable, an earnings statement covering the
     period of at least 12 months, but not more than 18 months, beginning
     with the first month of the first fiscal quarter after the effective
     date of such registration statement, which earnings statement shall
     satisfy the provisions of Section 11(a) of the Securities Act; and

                    (x)  provide and cause to be maintained a transfer
     agent and registrar for the Registrable Securities covered by such
     registration statement from and after a date not later than the
     effective date of such registration statement; it being hereby agreed
     that each Holder of Registrable Securities shall furnish to the
     Company such information regarding such Holder and the plan and method
     of distribution of Registrable Securities intended by such Holder as
     the Company may from time to time reasonably request in writing and as
     shall be required by law or by the Commission in connection therewith.

               (d)  Underwritten Offerings.  (i)  Incidental Underwritten
                    ----------------------        -----------------------
     Offerings.  If the Company at any time proposes to register any
     ---------
     securities under the Securities Act as contemplated by Section 4(b)
     hereof and such securities are to be distributed by or through one or
     more underwriters, the Company shall provide 20 days prior written
     notice to each Holder of such proposal and will use its best efforts
     if requested by such Holder in connection with such incidental
     registration of securities to arrange for such underwriters to
     include, on the same terms as the other securities being distributed,
     the Securities to be offered and sold by such Holder, together with
     such other securities to be distributed by or through such
     underwriters; provided, however, that if the managing underwriter for
                   --------  -------
     a registration pursuant to this Section 4(d) that involves an
     underwritten offering shall advise the Company that, in its opinion,
     the inclusion of the amount and kind of Registrable Securities to be
     sold for the account of Qualified Holders (as hereinafter defined)
     would adversely affect the price for


























     



     

     securities that the Company will derive from the offering or otherwise
     materially and adversely affect the success of the offering for the
     Company, then the number and kind of Registrable Securities to be sold
     for the account of such Qualified Holders shall be reduced (and may be
     reduced to zero) in accordance with the managing underwriter's
     recommendation to the minimum extent necessary to eliminate such
     adverse effect and, provided further, that if the number of
                         -------- -------
     Registrable Securities to be included in any registration is reduced
     (but not to zero), the number of such securities to be included in
     such registration for selling holders shall be allocated pro rata
     among all requesting Qualified Holders on the basis of the relative
     number of shares of such Common Stock (assuming, for the purpose of
     making such computation, the conversion, exchange or exercise of any
     securities convertible into or exchangeable or exercisable for Common
     Stock) each such Holder has requested to be included in such
     registration.  For the purposes hereof, the term "Qualified Holders"
     shall mean the Holders and any other Person who now owns or may
     hereafter own any Common Stock or securities convertible into or
     exchangeable or exercisable for Common Stock.  If, as a result of the
     proration provisions of this Section 4(d), any Holder shall not be
     entitled to include all Registrable Securities in a registration that
     such Holder has requested be included, such Holder may elect to
     withdraw its Registrable Securities from the registration; provided,
                                                                --------
      however, that such withdrawal election shall be irrevocable and,
      -------
     after making a withdrawal election, a Holder shall no longer have any
     right to include Registrable Securities in the registration as to
     which such withdrawal election was made.  Each Holder, including
     Registrable Securities in the registration, shall be a party to the
     underwriting agreement between the Company and such underwriters and
     the representations and warranties by, and the other agreements on the
     part of, the Company to and for the benefit of such underwriters shall
     also be made to and for the benefit of each Holder and the Company
     will cooperate with each Holder such that the conditions precedent to
     the obligations of each Holder under such underwriting agreement shall
     include conditions that are customary in underwriting agreements and
     otherwise reasonably satisfactory to such Holder.

                    (ii)  Holdback Agreements; Press Releases.
                          -----------------------------------
                         (A)  If any registration of Registrable Securities
          pursuant to this Agreement shall be effected by means of an
          Underwritten Offering and any of the Securities requested by a
          Holder to be included in such Underwritten Offering have been
          included therein, such Holder agrees, if so required by the
          managing underwriter, not to effect any


























     



     

          public sale or distribution of the Securities (other than as part
          of such underwritten public offering) within 30 days prior to the
          effective date of such registration statement or 90 days after
          the effective date of such registration statement.  In order to
          ensure compliance with the provisions of this Section
          4(d)(ii)(A), the Company agrees to notify each Holder as to the
          status and proposed effective date of any registration statement
          of the Company which has been filed with the Commission.

                         (B)  Before each Holder shall disseminate or
          announce publicly any information concerning a proposed offering
          pursuant to this Section 4 hereof that is intended for or may
          result in public knowledge thereof, such Holder shall so advise
          the Company and shall not disseminate or announce publicly such
          information without the Company's consent, unless such
          information is otherwise publicly available or the dissemination
          thereof is required by applicable law.

               (e)  Preparation; Reasonable Investigation.  In connection
                    -------------------------------------
     with the preparation and filing of each registration statement
     registering Registrable Securities under the Securities Act as
     contemplated by this Agreement, the Company shall give each Holder,
     its underwriters, if any, and each Holder's counsel and accountants,
     the opportunity to review the Company's preparation of such
     registration statement, each prospectus included in such registration
     statement or filed with the Commission and each amendment or
     supplement thereto, and the Company will give such person or persons
     such reasonable access to the Company's books and records and such
     opportunities to discuss the business of the Company with its officers
     and the independent public accountants who have certified its
     financial statements as shall be necessary for each such Holder and
     persons to conduct a reasonable investigation within the meaning of
     Section 11 of the Securities Act.  To minimize disruption and expense
     to the Company during the course of the registration process, each
     Holder shall use reasonable commercial efforts to coordinate its
     investigation and due diligence efforts and, to the extent
     practicable, will act through a single firm of counsel and a single
     firm of accountants and, if requested by the Company, will enter into
     confidentiality agreements with the Company in a form reasonably
     satisfactory to the Company.

               (f)  Indemnification.  (i)  Indemnification by the Company. 
                    ---------------        ------------------------------
     The Company shall indemnify and hold harmless each Holder of
     Registrable Securities covered by any registration statement filed
     pursuant to this Agreement, and any underwriter



























     



     

     or selling agent selected by one or more Holders with the consent of
     the Company with respect to such Registrable Securities, the
     directors, trustees and officers, and each other person, if any, who
     controls such Holder, underwriter or selling agent within the meaning
     of Section 15 of the Securities Act and Section 20 of the Exchange Act
     against any losses, claims, damages, liabilities or expenses,
     including reasonable fees and expenses of counsel (each a "Loss" and
     collectively "Losses"), joint or several, to which such Holder or any
     such persons may become subject under the Securities Act or otherwise,
     to the extent that such Losses (or related actions or proceedings)
     arise out of or are based upon (A) any untrue statement or alleged
     untrue statement of any material fact contained in an effective
     registration statement in which such Registrable Securities were
     included for registration under the Securities Act, any preliminary
     prospectus if used prior to the effective date of the registration
     statement, final prospectus (as supplemented, if the Company shall
     have supplemented the same) if used during the period in which the
     Company is required to keep the registration statement to which such
     prospectus relates current and otherwise in compliance with Section
     10(a) of the Securities Act, or (B) any omission or alleged omission
     to state therein a material fact required to be stated therein or
     necessary to make the statements therein, in light of the
     circumstances under which they were made, not misleading; provided,
                                                               --------
      however, that the Company shall have no obligation to provide any
      -------
     indemnification hereunder if any such Losses (or actions or
     proceedings in respect thereof) arise out of or are based upon an
     untrue statement or alleged untrue statement or omission or alleged
     omission made in such registration statement, preliminary prospectus
     or final prospectus, as the case may be, in reliance upon and in
     conformity with written information furnished to the Company by such
     Holder specifically for inclusion in such registration statement; and
     provided, further, that the Company shall have no obligation to
     --------  -------
     provide any indemnification hereunder if any such Losses arise out of
     or are based upon an untrue statement or alleged untrue statement or
     omission or alleged omission in a preliminary prospectus or the final
     prospectus, if such untrue statement or alleged untrue statement or
     omission or alleged omission shall have been corrected in the final
     prospectus (in the case of an untrue or an alleged untrue statement or
     omission or alleged omission in any preliminary prospectus) or in any
     supplement to the final prospectus (in the case of an untrue statement
     or alleged untrue statement or omission or alleged omission in the
     final prospectus) and such Holder or any such other person shall have
     failed to deliver or cause to be delivered (or deemed delivered) to
     the applicable purchaser of the Registrable Securities such final
     prospectus, or final prospectus as so supplemented, as the


























     



     

     case may be, prior to or concurrently with the sale of the Registrable
     Securities covered by a registration statement to the individual or
     entity asserting such Losses after the Company shall have furnished
     each such Holder or any such other person with a sufficient number of
     copies thereof in a manner and at a time sufficient to permit delivery
     of the same.  The indemnity provided in this Section 4(f)(i) shall
     remain in full force and effect regardless of any investigation made
     by or on behalf of such Holder or any such other person and shall
     survive the transfer of the Registrable Securities by such Holder or
     any such other person.

                    (ii) Indemnification by the Holders.  Each Holder and
                         ------------------------------
     each other person who controls such Holder within the meaning of
     Section 15 of the Securities Act or Section 20 of the Exchange Act,
     shall indemnify and hold harmless (in the same manner and to the same
     extent as set forth in Section 4(f)(i) hereof) the Company, each
     director of the Company, each officer of the Company who shall sign
     such registration statement and each other person, if any, who
     controls the Company within the meaning of Section 15 of the
     Securities Act or Section 20 of the Exchange Act, with respect to any
     untrue statement in or omission from any registration statement filed
     by the Company pursuant to this Agreement, any preliminary prospectus
     or any final prospectus included in such registration statement, or
     any amendment or supplement to such registration statement or
     prospectus, as the case may be, of a material fact if such statement
     or omission was made in reliance upon and in conformity with written
     information furnished to the Company or any of its representatives by
     such Holder or such other person, if any, who controls such Holder
     within the meaning of Section 15 of the Securities Act or Section 20
     of the Exchange Act specifically for inclusion in such registration
     statement, preliminary prospectus or final prospectus, as the case may
     be. 

                    (iii)     Notice of Claims, etc.  Promptly after
                              ----------------------
     receipt by an indemnified party of notice of the commencement of any
     action or proceeding (an "Action") involving a claim referred to in
     Sections 4(f)(i) and 4(f)(ii) hereof, such indemnified party shall, if
     indemnification is sought against an indemnifying party, give written
     notice to the indemnifying party of the commencement of such action;
     provided, however, that the failure of any indemnified party to give
     --------  -------
     said notice shall not relieve the indemnifying party of its
     obligations under Sections 4(f)(i) or 4(f)(ii) hereof, except to the
     extent that the indemnifying party is actually and materially
     prejudiced by such failure.  In case an Action is brought against any
     indemnified party, and such Action notifies an indemnifying party of
     the commencement there

























     



     

     of, the indemnifying party shall be entitled to participate therein
     and, to the extent it may elect by written notice delivered to the
     indemnified party promptly after receiving the aforesaid notice, to
     assume the defense thereof with counsel reasonably satisfactory to
     such indemnified party.  Notwithstanding the foregoing, the
     indemnified party shall have the right to employ its own counsel in
     any such case, but the fees and expenses of such counsel shall be at
     the expense of such indemnified party, unless (A) the employment of
     such counsel shall have been authorized in writing by the indemnifying
     party, (B) the indemnifying party shall not have employed counsel
     (reasonably satisfactory to the indemnified party) to take charge of
     the defense of such Action, within a reasonable time after notice of
     the commencement thereof, or (C) such indemnified party reasonably
     shall have concluded that there may be defenses available to it which
     are different from or additional to those available to the
     indemnifying party which, if the indemnifying party and the
     indemnified party were to be represented by the same counsel, could
     result in a conflict of interest for such counsel or materially
     prejudice the prosecution of the defenses available to such
     indemnified party.  If either of the events specified in clauses (A),
     (B) or (C) of the preceding sentence shall have occurred or otherwise
     shall be applicable, then the reasonable fees and expenses of one
     counsel (or firm of counsel) selected by a majority in interest of the
     indemnified parties (measured by reference to their ownership of
     Registrable Securities), together with the reasonable fees and
     expenses of such local counsel as may be reasonably selected by such
     counsel (or firm of counsel), shall be borne by the indemnifying
     party.  If, in any case, the indemnified party employs separate
     counsel, the indemnifying party shall not have the right to direct the
     defense of such action on behalf of the indemnified party.  Anything
     in this Section 4(f)(iii) to the contrary notwithstanding, an
     indemnifying party shall not be liable for the settlement of any
     action effected without its prior written consent (which consent in
     the case of an action exclusively seeking monetary relief shall not
     unreasonably be withheld or delayed) or if there be a final judgment
     adverse to the indemnified party, the indemnifying party agrees to
     indemnify the indemnified party from and against any loss or liability
     by reason of such settlement or judgment.  No indemnifying party
     shall, without the prior consent of the indemnified party, consent to
     entry of any judgment or enter into any settlement which does not
     include as a term thereof the unconditional release of the indemnified
     party from all liability in respect of such claim or litigation. 
































     



     

                    (iv) Contribution.  If the indemnification provided for
                         ------------
     in this Section 4 is unavailable or insufficient to hold harmless an
     indemnified party in respect of any Losses, then each indemnifying
     party shall, in lieu of indemnifying such indemnified party,
     contribute to the amount paid or payable by such indemnified party, as
     a result of such Losses in such proportion as appropriate to reflect
     the relative fault of the Company, on the one hand, and the
     indemnified party, on the other hand, and to the parties' relative
     intent, knowledge, access to information and opportunity to correct or
     mitigate the damage in respect of or prevent any untrue statement or
     omission giving rise to such indemnification obligation.  The Company
     and each Holder agree that it would not be just and equitable if
     contributions pursuant to this Section 4(f)(iv) were determined by pro
     rata allocation or by any other method of allocation which did not
     take account of the equitable considerations referred to above.  No
     person guilty of fraudulent misrepresentation (within the meaning of
     Section 11(f) of the Securities Act) shall be entitled to contribution
     from any person who is not guilty of such fraudulent
     misrepresentation.

                    (v)  Indemnification Payments.  Periodic payments of
                         ------------------------
     amounts required to be paid pursuant to this Section 4 shall be made
     during the course of the investigation or defense, as and when
     reasonably itemized bills therefor are delivered to the indemnifying
     party in respect of any particular Loss, damage or liability that is
     incurred.

                    (vi) Limitation on Seller's Payments.  Notwithstanding
                         -------------------------------
     any provision of this Agreement to the contrary, the liability of each
     Holder of Registrable Securities under this Section 4(f) shall in no
     event exceed the net proceeds received by such Holder from the sale of
     Registrable Securities covered by the registration statement giving
     rise to such liability.

               (g)  Registration Expenses.  The Company shall bear all
                    ---------------------
     Registration Expenses incurred in connection with the performance of
     its obligations under Section 4 of this Agreement.

          Section 5.  Additional Interest or Payments Under Certain
                      ---------------------------------------------
     Circumstances.  
     -------------
               (a)  Registration Defaults.  Additional interest shall be
                    ---------------------
     paid to the Holders of the Notes, and payments shall be made to the
     Holders of Shares, as set forth in Sections 5(c) and 5(d),
     respectively, if any of the following events occurs (each such event
     in clauses (i) through (iii) below being herein called a "Registration
     Default"):





















     



     

               (i) if by the earlier to occur of (x) March 31, 1997 and
          (y) the fifth business day next following the date on which the
          Company files with the Commission its Annual Report on Form 10-K
          for its fiscal year ended December 31, 1996, the Shelf
          Registration Statement has not been filed with the Commission;

               (ii) if by the earlier to occur of (x) May 31, 1997 and (y)
          the 65th day next following the date on which the Company files
          with the Commission its Annual Report on Form 10-K for its fiscal
          year ended December 31, 1996, the Shelf Registration Statement
          has not been declared effective by the Commission; or

               (iii) if after the Shelf Registration Statement is declared
          effective (A) the Shelf Registration Statement thereafter ceases
          to be effective; or (B) the Shelf Registration Statement or the
          related prospectus ceases to be usable (in each case except as
          permitted in paragraph (b) below) in connection with resales of
          Registrable Securities in accordance with and during the periods
          specified herein because of a Suspension Period.

               (b)  Certain Limitations.  A Registration Default referred
                    -------------------
     to in Section 5(a)(iii) shall be deemed not to have occurred and be
     continuing in relation to the Shelf Registration Statement or the
     related prospectus if (i) such Registration Default has occurred
     solely as a result of (x) the filing of a post-effective amendment to
     the Shelf Registration Statement to incorporate annual audited
     financial information with respect to the Company where such post-
     effective amendment is not yet effective and needs to be declared
     effective to permit Holders to use the related prospectus or (y) other
     material events, with respect to the Company that would need to be
     described in the Shelf Registration Statement or the related
     prospectus and (ii) in the case of clause (y), the Company proceeds
     promptly and in good faith to amend or supplement the Shelf
     Registration Statement and related prospectus to describe such events
     if the Company has determined in good faith that there are no material
     legal or commercial impediments in so doing; provided, however, that
                                                  --------  -------
     in any case if such Registration Default occurs for a continuous
     period in excess of 45 days, Additional Payment shall be payable in
     accordance with the Section 5(a) from the day such Registration
     Default occurs until such Registration Default is cured.

               (c)       Additional Interest.  Additional interest shall
                         -------------------
     accrue on the Notes over and above the interest set forth




























     



     

     in the title of the Notes ("Additional Interest") from and including
     the date on which any Registration Default shall occur, to but
     excluding the date on which all such Registration Defaults have been
     cured (a "Default Period"), at a rate of 1.00% per annum.  Any amounts
     of Additional Interest due pursuant to this Section 5 will be paid in
     cash on the regular interest payment dates with respect to the Notes
     and will be paid to the Persons to whom the regular interest payments
     are made.  The amount of Additional Interest will be determined by
     multiplying the applicable Additional Interest rate by the principal
     amount of the Notes, multiplied by a fraction, the numerator of which
     is the number of days during the Default Period and the denominator of
     which is 360.  The indebtedness represented by the Additional Interest
     shall be subordinated in right of payment to all existing and future
     Senior Indebtedness (as defined in the Indenture) as and to the same
     extent as the Notes.  

               (d)  Additional Payments.  Payments shall be payable to the
                    -------------------
     Holders of Shares in respect of any Default Period ("Additional
     Payments").  Any amount of Additional Payments due pursuant to this
     Section 5 will be paid in cash on the regular interest payment dates
     with respect to the Note and will be paid to the Persons who are the
     registered holders of such Shares on such dates.  The amount of
     Additional Payments to be made to any Holder in respect of any Default
     Period shall be equal to the product of (i) 1.00%, multiplied by (ii)
                                                        ---------- --
     the number of Shares held by such Holder, multiplied by (iii) $49.16,
                                               ---------- --
     multiplied by (iv) a fraction, the numerator of which is the number of
     ---------- --
     days during such Default Period and the denominator of which is 360. 
     The obligation represented by the Additional Payments shall be
     subordinated in right of payment to all existing and future Senior
     Indebtedness (as defined in the Indenture) as and to the same extent
     as the Notes.  For purposes of this Section 5(d), the "Shares" shall
     include shares of Common Stock issued upon the conversion of the
     Notes.

               (e)  Liquidated Damages.  Notwithstanding anything to the
                    ------------------
     contrary contained in this Agreement, it is hereby acknowledged and
     agreed that the Company shall have no liability for monetary damages
     to any Holder for any breaches, failures to comply or violations by it
     of Section 4 of this Agreement except as expressly provided in Section
     4(f) or 4(g) hereof or this Section 5; provided, however, in the event
                                            --------  -------
     that the Company breaches, fails to comply or violates the provisions
     of Section 4 hereof (other than Section 4(f) or 4(g) hereof), the
     Holders shall be entitled to, and the Company shall not oppose the
     granting of, equitable relief, including injunction and specific
     performance.























     



     

               (f)  Withholding Taxes.  The Company may withhold directly
                    -----------------
     or indirectly from any payments hereunder to the Holders all United
     States federal, state, local or other taxes that shall be required
     pursuant to any law or governmental regulation.

               The Holder shall:

               (i)  deliver to the Company (A) two duly completed copies of
          United States Internal Revenue Service Form 1001 or 4224, or
          successor applicable form, as they case may be, and (B) an
          Internal Revenue Service Form W-8, or successor applicable form;
          and

               (ii)  deliver to the Company two further copies of any such
          form on or before the date that such form expires or becomes
          obsolete and after the occurrence of any event requiring a change
          in the most recent form previously delivered by it to the
          Company.

               Any person that shall become a Holder shall, upon the
     effectiveness of the related transfer, provide the foregoing forms to
     the Company.

               Subject to compliance with the foregoing, the Company shall
     make all payments under this Agreement free and clear of, and without
     deduction or withholding for or on account of, income or withholding
     taxes to the extent permitted by then applicable law. The Holder shall
     cooperate with the Company by providing any other information
     reasonably requested by the Company to permit payments under this
     Agreement to be made free and clear of withholding tax.  In the event
     that the Company is required to withhold tax from any payment under
     this Agreement, the Company shall, as promptly as practicable, send to
     the Holder a certified copy of an original receipt received by the
     Company showing payment thereof.

          Section 6.  Rule 144.  The Company shall comply with the
                      --------
     requirements of Rule 144(c) under the Securities Act, as such Rule may
     be amended from time to time (or any similar rule or regulation
     hereafter adopted by the Commission), regarding the availability of
     current public information to the extent required to enable each
     Holder to sell Registrable Securities without registration under the
     Securities Act pursuant to the resale provisions of Rule 144 (or any
     similar rule or regulation).  Upon the request of a Holder, the
     Company will deliver to such Holder a written statement as to whether
     it has complied with such requirements and, upon a Holder's compliance
     with the applicable provisions of Rule 144, will take such action as
     may be required

























     



     

     (including, without limitation, causing legal counsel to issue an
     appropriate opinion) to cause its transfer agent to effectuate any
     transfer of Registrable Securities properly requested by such Holder,
     in accordance with the terms and conditions of Rule 144.

          Section 7.  Amendments and Waivers.  This Agreement may be
                      ----------------------
     amended or modified and the Company may take any action herein
     prohibited, or omit to perform any act herein required to be performed
     by it, only if the Company shall have obtained the written consent to
     such amendment, modification, action or omission to act, of each
     Holder.  Each Holder shall be bound by any consent authorized by this
     Section 7, whether or not such Registrable Securities shall have been
     marked to indicate such consent.

          Section 8.  Notices.  All notices hereunder must be in writing
                      -------
     and will be deemed to have been duly given upon receipt of hand
     delivery; certified or registered mail; return receipt requested; or
     telecopy transmission with confirmation of receipt:

               (i)  If to the Company:

                    SEACOR Holdings, Inc.
                    1370 Avenue of the Americas
                    New York, New York 10019
                    Attention: Mr. Charles Fabrikant
                    Telecopy No.: (212) 582-8522

                    with a copy to: Mr. Randall Blank

                    and to:

                    Weil, Gotshal & Manges LLP
                    767 Fifth Avenue
                    New York, New York 10153
                    Attention: David E. Zeltner, Esq.
                    Telecopy No.: (212) 310-8180

               (ii) If to the Holders:

                    c/o SMIT Internationale N.V.
                    Zalmstraat 1
                    3016 DS Rotterdam
                    The Netherlands
                    Attention: Mr. Antoon W. Kienhuis
                    Telecopy No.: (31) 10-454-92-68



























     



     

                    with a copy to:  Mr. Cees W.D. Bom

                    and to:

                    Sidley & Austin
                    875 Third Avenue
                    New York, New York 10022
                    Attention:  Myles C. Pollin, Esq.
                    Telecopy No.: (212) 906-2021

               Such names, addresses and telecopy numbers may be changed by
     written notice to each person listed above.

          Section 9.  Secretary to Retain Copy.  A copy of this Agreement,
                      ------------------------
     including all Exhibits hereto, shall be filed with the Secretary of
     the Company, and the Secretary shall make it available to each Holder
     of Registrable Securities at all reasonable times during normal
     business hours.

          Section 10.  Entire Agreement.  This Agreement embodies the
                       ----------------
     entire agreement and understanding between the Company and each Holder
     in respect of the subject matter contained herein.  This Agreement
     supersedes all prior agreements and understandings between the parties
     with respect to the subject matter of this Agreement.

          Section 11.  Governing Law.  This Agreement shall be governed by
                       -------------
     and construed in accordance with the internal laws of the State of New
     York (other than its rules of conflicts of laws to the extent the
     application of the laws of another jurisdiction would be required
     thereby).  This Agreement has been executed and delivered in
     Rotterdam, The Netherlands.

          Section 12.  Severability.  If any provision of this Agreement or
                       ------------
     the application thereof to any person or circumstances is determined
     by a court of competent jurisdiction to be invalid, void or
     unenforceable, the remaining provisions hereof, or the application of
     such provision to persons or circumstances other than those as to
     which it has been held invalid or unenforceable, shall remain in full
     force and effect and shall in no way be affected, impaired or
     invalidated thereby, so long as the economic or legal substance of the
     transactions contemplated hereby is not affected in any manner adverse
     to any party.  Upon such determination, the parties shall negotiate in
     good faith in an effort to agree upon a suitable and equitable
     substitute provision to effect the original intent of the parties.


























     



     

          Section 13.  Termination.  The rights and obligations under this
                       -----------
     Agreement shall automatically terminate upon the first to occur of
     (a) the sale of all Registrable Securities by each Holder and (b) the
     end of the Effective Period, as the same may be extended pursuant to
     Sections 4(a)(ii) hereof, except that the obligations of the parties
     under Sections 4(f) and of the Company under Section 4(g) shall
     survive any such termination.

          Section 14.  Miscellaneous.  The Company shall not after the date
                       -------------
     of this Agreement enter into any agreement with respect to its
     Securities which violates the rights granted to each Holder in this
     Agreement.  The headings in this Agreement are for purposes of
     reference only and shall not limit or otherwise affect the meaning of
     this Agreement.  This Agreement may be executed in any number of
     counterparts, each of which shall be deemed to be an original, but all
     of which, when taken together, shall constitute one and the same
     instrument.

               IN WITNESS WHEREOF, the parties have caused this Agreement
     to be duly executed and delivered as of the date first above written.


                              SEACOR HOLDINGS, INC.



                              By:/s/ John Gellert                
                                 --------------------------------
                                 Name: John Gellert
                                 Title: Attorney-in-Fact


                              SMIT INTERNATIONAL OVERSEAS B.V.



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