EXHIBIT 2.1



                                A G R E E M E N T





                                       ON
                                 THE COMBINATION
                             THROUGH A TENDER OFFER
                                       OF

                              NATIONAL-OILWELL, INC

                                       AND

                                  HYDRALIFT ASA





                            10TH DAY OF OCTOBER 2002



                        BUGGE, ARENTZ-HANSEN & RASMUSSEN



                                       ii

TABLE OF CONTENTS


                                                                                     
1     THE TENDER OFFER                                                                       2

   1.1   THE TENDER OFFER                                                                    2
   1.2   CONDITIONS                                                                          3
   1.3   HYDRALIFT BOARD SUPPORT                                                             3
   1.4   MANDATORY TENDER OFFER AND COMPULSORY ACQUISITION                                   4
   1.5   MANAGEMENT COMMITMENT                                                               4
   1.6   NON-COMPETE OBLIGATION                                                              4

2     REPRESENTATIONS AND WARRANTIES                                                         4

3     COVENANTS                                                                              5

   3.1   REASONABLE BEST EFFORTS                                                             5
   3.2   UNDERTAKING BY CERTAIN HYDRALIFT SHAREHOLDERS                                       5
   3.3   CONDUCT OF BUSINESS AND CAPITALIZATION PENDING THE CLOSING                          6
   3.4   DISTRIBUTIONS                                                                       7
   3.5   DUE DILIGENCE AND NOTICES OF CERTAIN EVENTS                                         7
   3.6   INFORMATION DOCUMENTS                                                               8
   3.7   ACCESS TO INFORMATION; CONFIDENTIALITY; DISCLOSURE OF INFORMATION                   9
   3.8   NO SOLICITATION OF TRANSACTIONS                                                    10
   3.9   PUBLIC ANNOUNCEMENTS                                                               10
   3.10  STOCK EXCHANGE DE-LISTING                                                          11
   3.11  COMPETITION LAW FILINGS                                                            11

4.    TERMINATION, AMENDMENT AND WAIVER                                                     11

   4.1   TERMINATION                                                                        11
   4.2   EFFECT OF TERMINATION                                                              12
   4.3   AMENDMENT                                                                          13

5.    GENERAL PROVISIONS                                                                    13

   5.1   NON-SURVIVAL OF REPRESENTATIONS, WARRANTIES AND AGREEMENTS                         13
   5.2   NOTICES                                                                            13
   5.3   ASSIGNMENT; BINDING EFFECT; BENEFIT                                                14
   5.4   EXPENSES                                                                           14
   5.5   NO WAIVER                                                                          14
   5.6   PROVISIONS SEVERABLE                                                               15
   5.7   HEADINGS                                                                           15
   5.8   GOVERNING LAW AND ARBITRATION                                                      15
   5.9   ENTIRE AGREEMENT                                                                   15
   5.10  COUNTERPARTS OF THE AGREEMENT                                                      16
</Table>



                                      iii


LIST OF ANNEXES

       The Annexes form an integral part of the Agreement

<Table>
                                           
       ANNEX 1                                Main Terms and Conditions for the Tender Offer
       ANNEX 2                                Tentative Time Schedule
       ANNEX 3                                Hydralift Support Statement
       ANNEX 4                                Management Commitment
       ANNEX 5                                Non-compete Obligation
       ANNEX 6                                Representations and Warranties
       ANNEX 7                                Form of Call Option
       ANNEX 8                                Press Releases
</Table>



                                   COMBINATION
                                    AGREEMENT


       THIS AGREEMENT is entered into on this day of 10 October 2002 (the
       "Agreement"), by and between

       NATIONAL-OILWELL, INC ("NOI"), a corporation organized and existing under
       the laws of the United States of America; and

       HYDRALIFT ASA ("Hydralift"), a corporation organized and existing under
       the laws of Norway.

       NOI and Hydralift are hereinafter jointly referred to as "Parties" and
       each of them a "Party".

                                    RECITALS:

A.     NOI is a worldwide leader in the design, manufacture and sale of
       comprehensive systems and components used in oil and gas drilling and
       production.

B.     Hydralift is a leading supplier of hydraulic and electric systems and
       equipment for selected niches in the offshore and marine markets.

C.     The Boards of Directors of each of NOI and Hydralift have determined that
       it is in the best interests of their respective companies and
       shareholders to combine the businesses of NOI and Hydralift through the
       acquisition by NOI of the shares of Hydralift in a public tender offer to
       be effected as set forth in this Agreement.


                                       2

D.     Following the combination, NOI desires to further develop and continue
       Hydralift role and position within the offshore drilling equipment,
       offshore production equipment and floating production markets and to
       conduct those activities out of Kristiansand.

E.     The Parties intend, upon the terms and subject to the conditions of this
       Agreement, that NOI or a wholly owned subsidiary of NOI, shall acquire,
       through a voluntary public tender offer (the "Tender Offer") and, if
       necessary, through a subsequent mandatory tender offer and compulsory
       acquisition proceedings in accordance with applicable Norwegian law, all
       of the issued and outstanding shares of Hydralift (the "Hydralift
       Shares"), as more fully described below.

F.     As a result of the transactions described in Recital E, Hydralift will
       become a subsidiary of NOI and the present holders of Hydralift Shares
       will as consideration for Hydralift Shares receive cash, as more fully
       described below.

G.     The Boards of Directors of NOI and Hydralift have each approved this
       Agreement. The Board of Directors of Hydralift has decided to recommend
       to the shareholders of Hydralift that they tender their Hydralift Shares
       in accordance with the terms of the Tender Offer.

       NOW THEREFORE, the Parties hereby agree as follows:


1      THE TENDER OFFER

1.1    THE TENDER OFFER

       NOI shall commence the Tender Offer on or about 8 November, 2002.

       Pursuant to the Tender Offer, NOI shall offer to pay a consideration of
       NOK 55 for each Hydralift Share.

       The main Terms and Conditions for the Tender Offer are set out in
       ANNEX 1.


                                       3


       A tentative time schedule for the Tender Offer is set forth in ANNEX 2.
       The Parties agree that they have a common goal and interest in commencing
       and completing the Tender Offer as soon as practical and shall use their
       best efforts in this regard.

       The initial expiration date of the Tender Offer shall be a date (such
       date, as it may be extended from time to time as hereinafter provided,
       being referred to herein as the "Expiration Date") which is not later
       than three (3) weeks after the date on which the Tender Offer commences.
       The Expiration Date may be extended by NOI from time to time until such
       time as all of the Transaction Conditions have been satisfied. Subject
       only to the conditions set forth above, NOI shall acquire and pay for all
       Hydralift Shares validly tendered and not withdrawn pursuant to the Terms
       and Conditions at the earliest practicable time following the Expiration
       Date (such date of acceptance being referred to herein as the "Closing
       Date").

1.2    CONDITIONS

       The obligation of NOI to acquire and to pay for Hydralift Shares tendered
       pursuant to the Tender Offer shall be subject only to this Agreement not
       having been terminated and the satisfaction or waiver by NOI of the
       conditions listed in Annex 1 (the "Transaction Conditions").

1.3    HYDRALIFT BOARD SUPPORT

       The Board of Directors of Hydralift has decided to support the Tender
       Offer and will recommend to all the shareholders of Hydralift that they
       accept the Tender Offer and tender their shares pursuant to the Terms and
       Conditions and to issue a statement in the form set out in ANNEX 3,
       provided, however, that such recommendation may at any time prior to the
       Closing Date be cancelled, modified or amended if and when the Board of
       Directors of Hydralift, having received a competing offer for the
       Hydralift Shares and after having obtained advice from its legal counsel,
       determines in good faith that a failure to so cancel, modify or amend its
       recommendation would under applicable laws constitute a breach of its
       fiduciary duties towards the shareholders of Hydralift.


                                       4


1.4    MANDATORY TENDER OFFER AND COMPULSORY ACQUISITION

       As soon as practicable after the Closing Date, assuming that the
       Transaction Conditions shall have been either satisfied or waived, NOI
       shall, subject to the applicable rules, regulations and procedures, make
       a mandatory tender offer as regulated by Norwegian securities market
       legislation and take the necessary action under Norwegian law to acquire
       all the remaining issued and outstanding Hydralift Shares and to de-list
       the Hydralift Shares from the Oslo Stock Exchange ("OSE").

1.5    MANAGEMENT COMMITMENT

       The Chairman of the Board of Hydralift, Mr. Bjarne Skeie, and the
       Managing Director of Hydralift, Mr. Birger Skeie, have expressed their
       support of the combination of NOI and Hydralift and confirmed that they
       will not terminate their employment with Hydralift as a consequence of
       the transactions contemplated in this Agreement in the form set out in
       ANNEX 4.

1.6    NON-COMPETE OBLIGATION

       The Chairman of the Board of Hydralift, Mr. Bjarne Skeie, have confirmed
       that he will not compete with the business of NOI or Hydralift, or any of
       their subsidiaries in the form set out in ANNEX 5.


2      REPRESENTATIONS AND WARRANTIES

       Hydralift represents and warrants to NOI as set forth in ANNEX 6 hereto,
       it being understood that these representations and warranties will not
       survive the Closing Date or the termination of this Agreement and that a
       breach of these representations and warranties will not create any
       liability for damages but shall only entitle NOI to terminate this
       Agreement.


                                       5


3      COVENANTS

3.1    REASONABLE BEST EFFORTS

       Each Party agrees to use its reasonable best efforts to do, or cause to
       be done, and to assist and cooperate with the other Party in doing, all
       things necessary or advisable to complete in the most expeditious manner
       practicable, the Tender Offer and the other transactions contemplated by
       this Agreement, including:

       (i)     the obtaining of all necessary waivers, consents and approvals
               from governmental entities and stock exchanges and the making of
               all necessary registrations and filings and the taking of all
               steps as may be necessary to obtain an approval or waiver from,
               or to avoid an action or proceeding by, any governmental entity
               or stock exchange;

       (ii)    the obtaining of all necessary consents, approvals or waivers
               from third parties; and

       (iii)   the execution and delivery of any additional instruments
               necessary to consummate the transactions contemplated by, and to
               fully carry out the purposes of, this Agreement.

       The Parties hereto shall cooperate and consult with each other in
       connection with the making of all such filings, including providing
       copies of all pertaining documents to the non-filing Party and their
       advisors prior to filing, and neither of the Parties will file any such
       document without consultation of the other Party.

3.2    UNDERTAKING BY CERTAIN HYDRALIFT SHAREHOLDERS

       Skeie Group AS, Bjarne Skeie, Tom Froberg, Geir Worum, Peter J. Moe, Tor
       Henning Lien, 0yvind Reiten and Birger Skeie who own an aggregate of
       22.80% of the presently


                                       6


       outstanding shares of Hydralift have undertaken to give NOI a call option
       on their shares in Hydralift subject to the terms and conditions set out
       in ANNEX 7.

3.3    CONDUCT OF BUSINESS AND CAPITALIZATION PENDING THE CLOSING

       Hydralift agrees that, between the date of this Agreement and the Closing
       Date, except as contemplated by any other provision of this Agreement,
       the business of Hydralift and its subsidiaries shall be conducted only
       in, and Hydralift and its subsidiaries shall continue to take all
       appropriate actions in, and not take any action except in, the ordinary
       course of business consistent with past practice or in accordance with
       the investment plans or divestment programs decided on by the relevant
       corporate body of Hydralift before the date of this Agreement and
       disclosed to NOI.

       Hydralift shall not, without the consent of NOI, which shall not be
       unreasonably withheld or delayed;

       (i)     amend or propose to amend its charter or bylaws;

       (ii)    split, combine or reclassify any outstanding shares of its
               capital stock, or declare, set aside or pay any dividends or make
               any other distribution to the holders thereof;

       (iii)   issue or sell any options, warrants, convertible securities,
               calls, commitments, agreements or rights (contingent or
               otherwise) of any character to purchase, subscribe to, or
               otherwise acquire any shares in Hydralift or subdivide or in any
               way reclassify any shares of Hydralift.

       (iv)    merge or consolidate with or into any other corporation or change
               in any manner the rights of its capital stock or the character of
               its business;

       (v)     other than in the ordinary course of business acquire (by merger,
               consolidation or acquisition of stock or assets) any corporation,
               partnership or other business organisation or division thereof or
               make any equity investments therein;

       (vi)    other than in the ordinary course of business incur any
               indebtedness for borrowed money or issue any debt securities;

       (vii)   other than in the ordinary course of business enter into or
               modify any material contract, lease or agreement;


                                       7


       (viii)  other than in the ordinary course of business directly or
               indirectly, take any action which would cause its representations
               and warranties contained herein to become inaccurate in any
               material respect;

       and Hydralift shall further;

       (i)     use its best efforts to maintain Hydralift' market position and
               business organisation and make no material changes to the
               compensation or benefit payable to its senior employees; and

       (ii)    promptly disclose to NOI any material information with regard to
               its business contained in its representations and warranties or
               any Annex hereto which, because of any event occurring after the
               date hereof, is incomplete or is no longer correct as of all
               times after the date hereof until the Closing Date.

3.4    DISTRIBUTIONS

       Hydralift undertakes not to distribute, or have distributed any
       dividends, group contributions or other contributions as a profit
       distribution (each a "Distribution") to their respective shareholders
       after December 31, 2001, (except for any Distribution as per their
       respective Annual Accounts approved by the shareholders for the fiscal
       year 2001).

3.5    DUE DILIGENCE AND NOTICES OF CERTAIN EVENTS

       On or before 8 November 2002 NOI will complete a confirmatory financial
       Due Diligence review of Hydralift as described below. Subject to proper
       compliance with all relevant laws and regulations, Hydralift will give
       NOI and its advisors such information and access to their respective
       business, management and advisors as may be required to enable them to
       conduct such financial Due Diligence review. To the extent NOI requests
       information on issues, which Hydralift, in their reasonable opinion,
       determines contains business secrets that they do not wish to disclose to
       NOI, such information shall only be given to NOI's independent advisors.
       The independent advisors may only disclose such information to NOI in a
       manner and in a format


                                       8


       agreed in writing by Hydralift prior to such disclosure, such agreement
       not to be unreasonably withheld.

       The Parties agree that the purpose of the financial Due Diligence review
       shall be to verify that there are no circumstances, events or changes in
       or effect on the business of Hydralift and its Subsidiaries taken as a
       whole that is, or is reasonably likely to be, materially adverse to the
       business, condition (financial or otherwise) or result of operations of
       Hydralift and its Subsidiaries taken as a whole (a "Material Adverse
       Effect") and further to verify the representations and warranties as set
       forth in ANNEX 6 hereto. In order to qualify as a Material Adverse Effect
       under this Agreement, the Material Adverse Effect must represent a
       situation where the value of Hydralift is reduced a minimum of NOK 100
       million.

       Throughout the term of this Agreement, Hydralift shall give prompt notice
       to NOI of any change, event or circumstance that is reasonably likely to
       result in a Material Adverse Effect on it or is likely to delay or impede
       its ability to consummate the transactions contemplated by this Agreement
       or to fulfill its obligations set forth herein. Likewise, NOI shall give
       prompt notice to Hydralift of any change, event or circumstance that is
       reasonably likely to result in a Material Adverse Effect on Hydralift, a
       need to extend the financial Due Diligence review period due to a matter
       which is reasonably likely to result in a Material Adverse Effect or in
       the event that Hydralift has not provided information as per the purpose
       of the financial Due Diligence review as set out in the paragraph above
       or which is likely to delay or impede its ability to consummate the
       transactions contemplated by this Agreement or to fulfill its obligations
       set forth herein.


3.6    INFORMATION DOCUMENTS

       (a)     As promptly as practicable after the execution of this Agreement,
               NOI shall prepare the documentation that will constitute the
               basis for the Tender Offer (the "Information Documents").
               Hydralift shall furnish all information concerning it as



                                       9


               NOI may reasonably request in connection with such actions and
               the preparation of the Information Documents. As promptly as
               practicable, the appropriate Information Documents will be mailed
               or otherwise made available to the shareholders of Hydralift. NOI
               shall cause the Information Documents to comply as to form and
               substance in all material respects with the applicable
               requirements of the relevant jurisdictions.

       (b)     The Information Documents shall include the recommendation of the
               Board of Directors of Hydralift to the shareholders of Hydralift
               that they accept the Tender Offer referred to in Section 1.3.

       NOI will be primarily responsible for and take the lead in the drafting
       of necessary documents and shall absorb its costs related to those
       activities. Hydralift shall pay its own legal, accounting and other
       related costs.

3.7    ACCESS TO INFORMATION; CONFIDENTIALITY; DISCLOSURE OF INFORMATION

       For the purpose of finalizing the Information Documents and any other
       documents required for the Tender Offer and except as required pursuant
       to any confidentiality agreement or similar agreement or arrangement to
       which the Parties or any of their respective subsidiaries is a party or
       pursuant to applicable law, including competition law, or the regulations
       or requirements of any stock exchange or other regulatory organization
       with whose rules the Parties are required to comply, from the date of
       this Agreement to the Closing Date, Hydralift shall (and shall cause its
       respective subsidiaries to) provide to NOI access at reasonable times
       upon prior notice to such information concerning the business,
       properties, contracts, assets, liabilities, personnel and other aspects
       of Hydralift and its subsidiaries as NOI may reasonably request in order
       to finalize the Information Documents. For the avoidance of doubt,
       Hydralift shall not be obliged to provide direct access to NOI to
       information under this section which constitute business secrets, ref.
       Section 3.5 above. The Parties shall each comply with all of their
       respective obligations in the Confidentiality Agreement(s), dated 7 June,
       2002 (the "Confidentiality Agreement(s)") with respect to the information
       disclosed. All information provided hereunder to the other Parties shall
       be covered by


                                       10


       the Confidentiality Agreement(s), which shall survive the termination or
       expiration of this Agreement.

       Throughout the term of this Agreement, NOI shall have access at
       reasonable times upon prior written notice to such information required
       to verify that there are no circumstances, events or changes having a
       Material Adverse Effect on Hydralift.

       NOI shall have the right to acquire and sell Hydralift Shares, warrants
       or other financial instruments throughout the term of this Agreement and
       up until the Closing Date. If NOI is or become prohibited from carrying
       out such transactions due to it having knowledge of information covered
       by the Oslo Stock Exchange Regulations Section 5-2, whether obtained from
       Hydralift or otherwise, Hydralift shall, promptly after having received
       notice to such effect from NOI, disclose such information according to
       the appropriate rules of the Oslo Stock Exchange.

3.8    NO SOLICITATION OF TRANSACTIONS

       Hydralift will not, directly or indirectly, solicit any inquiries or
       facilitate or solicit any proposal or offer (including, without
       limitation, any proposal or offer to its shareholders) that constitutes,
       or may reasonably be expected to lead to, any competing transaction or
       otherwise adversely affect the completion of the transactions
       contemplated herein, or have any negotiations with anyone in furtherance
       of such inquiries or to obtain a competing transaction. Hydralift shall
       promptly and at the same time that the Oslo Stock Exchange is informed,
       inform NOI of any competing offer they receive, including all relevant
       details thereof, and shall not issue any favorable statements regarding
       the competing offer before NOI has had at least 5 Norwegian business days
       in order to consider and to present a revised and increased Tender Offer.

3.9    PUBLIC ANNOUNCEMENTS

       The initial press releases concerning the transactions shall be in the
       form set out in ANNEX 8 and, thereafter, the Parties shall consult with
       each other before issuing any press release or otherwise making any
       public statements with respect to this Agreement


                                       11


       or any transactions contemplated hereunder and shall not issue any such
       press release or make any such public statement without the other Party's
       approval, except to the extent that public statements are required
       according to applicable laws.

3.10   STOCK EXCHANGE DE-LISTING

       The Parties shall use their respective best efforts to cause the
       Hydralift Shares to be de-listed from the OSE as soon as permitted and
       practicable under applicable laws and regulations.

3.11   COMPETITION LAW FILINGS

       Without limiting the obligations of each Party under Section 3.1, NOI
       shall prepare the necessary filings as required under any antitrust or
       competition laws and use their reasonable best efforts to facilitate the
       favorable treatment of those at relevant authorities. Hydralift shall
       co-operate fully with NOI, and shall provide all information about
       Hydralift reasonably requested by NOI.


4.     TERMINATION, AMENDMENT AND WAIVER

4.1    TERMINATION

       This Agreement may be terminated and the Tender Offer may be abandoned,
       as follows:

       (i)     by NOI and Hydralift, by mutual written consent duly authorized
               by the Board of Directors of each of NOI and Hydralift before the
               commencement of the Tender Offer Period;

       (ii)    by either Party, if the Closing Date shall not have occurred on
               or before 31. March, 2003; provided, however, that this right to
               terminate shall not be available to the Party whose failure to
               fulfill any obligation under this Agreement shall have resulted
               in the failure of the closing to occur on or before such date;


                                       12


       (iii)   by either Party at any time prior to the Closing Date, if any
               order preventing the consummation of the Tender Offer shall have
               been issued by any court of competent jurisdiction;

       (iv)    by NOI before the Closing Date, upon a material breach of any
               representation, warranty, covenant or agreement by any other
               Party set forth in this Agreement;

       (v)     by NOI before the Closing Date, if and to the extent that the
               confirmatory Due Diligence review referred to in section 3.5
               above has revealed previously undisclosed circumstances that has
               a Material Adverse Effect;

       (vi)    by NOI, if the Board of Directors of Hydralift has modified or
               withdrawn its support for the Tender Offer referred to in Section
               1.3, whether or not in accordance with the terms thereof.

4.2    EFFECT OF TERMINATION

       In the event of termination of this Agreement pursuant to Section 4.1
       this Agreement shall forthwith become void and, if termination is made
       pursuant to Section 4.1 (i) - (v), there shall be no liability for either
       Party or any of their officers and directors under this Agreement and all
       rights and obligations of each Party hereto shall cease, provided,
       however, that nothing herein shall relieve any Party from liability for
       the willful breach of any of its representations and warranties or the
       willful breach of any of its covenants or agreements set forth in this
       Agreement.

       If the Board of Directors of Hydralift has modified or withdrawn its
       support for the Tender Offer referred to in Section 1.3 and the Tender
       Offer is not comsummated, Hydralift shall promptly upon request pay to
       NOI in immediately available funds a termination fee in the amount of NOK
       50 million to cover the estimated amount of any and all out-of-pocket
       fees and expenses incurred or paid by NOI in connection with the
       transactions contemplated by this Agreement, including filing fees,
       printing fees and fees and expenses of law firms, commercial banks,
       investment banking firms,


                                       13


       accountants, experts and consultants and all costs for any financial
       arrangements (and the breaking of them).

       If an offer is made to acquire the stock of NOI and the Tender Offer
       consequently is not consummated, NOI shall promptly upon request pay to
       Hydralift in immediately available funds a termination fee in the amount
       of NOK 50 million to cover the estimated amount of any and all
       out-of-pocket fees and expenses incurred or paid by Hydralift in
       connection with the transactions contemplated by this Agreement,
       including filing fees, printing fees and fees and expenses of law firms,
       commercial banks, investment banking firms, accountants, experts and
       consultants.

4.3    AMENDMENT

       This Agreement may not be amended except by an instrument in writing
signed by the Parties hereto.

5.     GENERAL PROVISIONS

5.1    NON-SURVIVAL OF REPRESENTATIONS, WARRANTIES AND AGREEMENTS

       The representations, warranties and agreements in this Agreement shall
       terminate at the Closing Date or upon the termination of this Agreement
       pursuant to Section 4.1, as the case may be.

5.2    NOTICES

       All notices, demands or other communication, which shall be in the
       English language, to or upon the respective Parties hereto shall be
       deemed to have been duly given or made when delivered by mail or telefax
       to the Party in question as follows:


                                       14


       If to NOI:           National-Oilwell, Inc.
       address:             10000 Richmond Avenue, Suite 4000
                            Houston, Texas 77042, USA
       telefax:             +1 713 346 7995
       attention:           General Counsel

       If to Hydralift:     Hydralift ASA
       address:             Box 401
                            4604 Kristiansand, NORWAY
       telefax:             +47 38 19 23 11
       attention:           Mr. Birger Skeie (CEO)

       or at such other address as the respective Party hereto may hereafter
       specify in writing to the other Party.

5.3    ASSIGNMENT; BINDING EFFECT; BENEFIT

       Neither this Agreement nor any of the rights, interests or obligations
       hereunder shall be assigned by any of the Parties without the prior
       written consent of the other Party. Notwithstanding anything contained in
       this Agreement to the contrary, nothing in this Agreement, expressed or
       implied, is intended to confer on any person other than the Parties
       hereto or their respective successors and assigns any rights, remedies,
       obligations or liabilities under or by reason of this Agreement.

5.4    EXPENSES

       Without prejudice to the provisions contained in Section 4.2, all
       expenses incurred in connection with this Agreement and the transactions
       contemplated hereunder shall be paid by the Party incurring such
       expenses, whether or not the Tender Offer is consummated. However,
       subject to separate agreements between all the Parties, certain expenses
       can be incurred collectively and shall be divided equally between the
       relevant Parties.


                                       15


5.5    NO WAIVER

       Failure by a Party at any time or times to require performance of any
       provisions of this Agreement shall in no manner affect its right to
       enforce the same, and the waiver by a Party of any breach of any
       provision of this Agreement shall not be construed to be a waiver by such
       Party of any succeeding breach of such provision or waiver by such Party
       of any breach of any other provision hereof.

5.6    PROVISIONS SEVERABLE

       If any part of this Agreement is held to be invalid or unenforceable such
       determination shall not invalidate any other provision of this Agreement;
       however, the Parties hereto shall attempt, through negotiations in good
       faith, to replace any part of this Agreement so held to be invalid or
       unenforceable.

5.7    HEADINGS

       The headings of this Agreement are for convenience of reference only and
       shall not in any way limit or affect the meaning or interpretation of the
       provisions of this Agreement.

5.8    GOVERNING LAW AND ARBITRATION

       This Agreement shall be governed by and interpreted in accordance with
       the laws of Norway. Any dispute arising out of or in connection with this
       Agreement shall be finally settled by arbitration in accordance with
       chapter 32 of the Norwegian Civil Procedure Act 1915. The arbitration
       shall be held in Oslo and the arbitration proceedings shall be conducted
       in the English language.


                                       16



5.9    ENTIRE AGREEMENT

       This Agreement and the Confidentiality Agreement(s) constitute the entire
       agreement among the Parties with respect to the subject matter hereof and
       supersede all prior agreements and understandings among the Parties with
       respect thereto. No addition to or modification of any provision of this
       Agreement shall be binding upon a Party unless made in writing and signed
       by both Parties.

5.10  COUNTERPARTS OF THE AGREEMENT

       This Agreement has been executed in two (2) identical counterparts, one
       (1) for each Party.

IN WITNESS WHEREOF, the Parties have caused this Agreement to be executed as of
the date first written above by their respective officers thereunto duly
authorized.


       NATIONAL-OILWELL, INC.                  HYDRALIFT ASA


       By:  /s/ Merrill A. Miller, Jr.         By:  /s/ Bjarne Skeie
          -----------------------------           ----------------------------
                Merrill A. Miller Jr.                   Bjarne Skeie
                Chairman, President/CEO                 Chairman of the Board


                                               By:  /s/ Birger Skeie
                                                  ----------------------------
                                                        Birger Skeie
                                                        Managing Director



                                       17



            ANNEX 1 - MAIN TERMS AND CONDITIONS FOR THE TENDER OFFER


1.       INTRODUCTION

1.1      NOI will offer to acquire all the outstanding shares in Hydralift by
         presenting the Tender Offer.

1.2      The Tender Offer shall be announced on or about 8 November 2002 on the
         terms and subject to the conditions stipulated in this Annex 1.

1.3      NOI undertakes after announcing the Tender Offer to prepare and have
         approved by the Oslo Stock Exchange the required Offer documentation
         according to the Norwegian Securities Trading Act chapter 4. The Offer
         Documentation shall be subject to the Main Terms and Conditions
         included in this Annex 1.

2.       THE OFFER

2.1      The acquisition of Hydralift shares shall be effected as a sale of
         shares for cash.

2.2      The accepting shareholders will for each share in Hydralift receive a
         consideration of NOK 55 in cash.

2.3      NOI may increase the Tender Offer Price during the Tender Offer Period.

2.4      NOI may purchase Hydralift Shares, or rights to such shares, otherwise
         than under the Tender Offer, such as in the open market or in privately
         negotiated purchases.

3.       THE TENDER OFFER PERIOD

3.1      The Tender Offer shall expire not later than three (3) weeks after the
         date on which the Tender Offer commences ("The Expiration Date").

3.2      The Expiration Date may be extended by NOI from time to time until such
         time as all of the Transaction Conditions have been satisfied.


                                       18


3.3      The acceptances from Hydralift shareholders will cease to be valid if
         NOI has not on 31. March 2003 at latest, made a public announcement
         that the Transaction Conditions are met or waived ("the Closing
         Announcement").

4.       TRANSACTION CONDITIONS

         The obligation of NOI to complete the Tender offer may be made subject
         to the following conditions:

4.1      That the Hydralift Board recommends and upholds its recommendation of
         the Tender Offer for acceptance by Hydralift shareholders in accordance
         with the Board Support Form in Annex 2 to the Agreement,

4.2      That a number of Hydralift Shares representing more than 90% of the
         number of shares and voting power of the Hydralift Shares, including
         Hydralift Shares aquired by NOI in the market, Hydralift Shares
         tendered in respect of the Tender Offer and Hydralift Shares controlled
         by the Call Option (cf. Annex 7) or other option agreements, shall have
         been validly acquired, tendered and not withdrawn within the Tender
         Offer period.

4.3      That any governmental or official approval under EU or US competition
         and/or any other applicable competition or other laws, which are
         necessary for the consummation of the transactions contemplated
         hereunder, have been duly obtained prior to 31 March 2003, and that no
         order preventing the consummation of the Tender Offer shall have been
         issued by any court of competent jurisdiction.

4.4      That no intervention will be made and no conditions will be imposed by
         other national or international authorities or court of law in
         connection with the acquisition that NOI at its sole discretion
         determines are unduly burdensome.

4.5      That Hydralift is not in material breach of any representation
         warranty, covenant or agreement set forth in the Agreement.


                                       19


4.6      That there have not been events, related to the Hydralift group of
         companies, that separately or together may have a Material Adverse
         Effect, financially or otherwise for the assets of the Hydralift group
         or for Hydralift and their obligations, operations, results or
         prospects.

4.7      That the business of Hydralift, in the period from the commencement of
         the Tender Offer and prior to settlement of the Tender Offer, has been
         conducted in the ordinary course of business and in accordance with
         applicable laws, regulations and decisions of any governmental body,
         and that there has not been made any changes in the share capital of
         Hydralift, issuance of rights which entitles holders to demand new
         shares or similar securities, payment of dividend, proposals to
         shareholders for merger or de-merger, or any other change of corporate
         structure.

4.8      NOI may elect whether or not to complete the Tender Offer, if one or
         more of the conditions in 4.1-4.7 above are not fulfilled.

5.       SETTLEMENT

5.1      Settlement will be available to the selling shareholders within (two)
         weeks after the Closing Announcement in Section 3.3.

5.2      If the Closing Date has not occurred on 31 December 2002 due to the
         required approvals under applicable competition laws not having been
         obtained, NOI will pay interest in the amount of 7,0% p.a. to the
         owners of Hydralift Shares tendered in respect of the Tender Offer,
         calculated from 31 December 2002 and until full settlement is made or
         the shares are returned.

6.       OTHER TERMS FOR THE TENDER OFFER

6.1      Shareholder acceptance of the Tender Offer shall be irrevocable and
         will include all the accepting shareholders' shares owned at the time
         of acceptance during the Tender


                                       20


         Offer Period provided the Transaction Conditions for completing the
         Tender Offer as stated in Section 4 are met.

6.2      The accepting shareholders' shares will upon receipt of the acceptance
         be transferred to a VPS account to be blocked in favor of an agent of
         NOI on behalf of NOI.

6.3      Shares tendered will be acquired on the terms of the Tender Offer, free
         from charges and encumbrances and together with all rights attaching
         thereto.

6.4      Norwegian law shall govern the Tender Offer.



                         ANNEX 2 - INDICATIVE TIMETABLE

The Parties have agreed to use their best efforts to pursue the following
indicative timetable:

<Table>
                              
11 October 2002                   Press release announcing transaction (prior to open of market
                                  in Oslo and New York.

11 October 2002                   Preparation of Information Documents begins.

14 October 2002                   Joint press conference - in Houston.

11 October 2002, at the latest    Complete due diligence information, as agreed, available in the data room.

21 October, 2002                  Due diligence commences.

21 October, 2002                  Competition filings, if applicable.

25 October 2002                   Completion of interviews and site visits.

8 November, 2002                  Due diligence ends, subject to the deadlines having been met.

8 November 2002                   Lodging of Voluntary Tender Offer

22 November, 2002                 Offer acceptance period ends (subject to extension).

29 November, 2002                 Competition clearance, if applicable.

1 December 2002                   Offer becomes unconditional (subject to competition filings)

14 December 2002                  Hydralift Shareholders receive Consideration

16 December 2002                  Mandatory Offer commences.

13 January, 2003                  Mandatory Offer ends.

Later                             Minority squeeze out begins (subject to completion of the Offer and
                                  Mandatory Offer having occurred).

Later                             De-listing of Hydralift Shares (timing depending on number of shares held by
                                  minority shareholders).
</Table>



                      ANNEX 3 - HYDRALIFT SUPPORT STATEMENT


On 11 October, 2002 the Board of Directors of Hydralift and NOI announced that
NOI and Hydralift has entered into a Combination Agreement dated 10October, 2002
("the Combination Agreement") under which NOI, subject to certain terms and
conditions, shall launch an offer to acquire all shares in Hydralift by making a
public voluntary tender offer with payment in cash (the "Tender Offer"). [The
acquisition will inter alia require certain governmental approvals] and 90 %
acceptance by Hydralift shareholders.

The Board of Directors hereby present its statement concerning the Tender Offer
in accordance with Section 4-16 of Norwegian Securities Trading Act.

Prior to entering into the combination agreement the management and the board of
directors of Hydralift have with the assistance of their advisors evaluated
various alternatives for changing the ownership structure of Hydralift and have
as part of that process conducted discussions with the management and board of
directors of NOI in order to review possible common business opportunities. In
this cause NOI and Hydralift have come to the conclusion that it would be in the
best interest of the companies and their shareholders to combine the businesses
of NOI and Hydralift in order to create a strong platform for growth.

As of 10 October, 2002, 8 shareholders representing 22.80 per cent of the shares
in Hydralift have granted NOI a call option to acquire the shares at a price
equal to the Offer Price. The call option is exercisable until 31 March, 2003
(including).

It is the Board of Directors' opinion that the combination of Hydralift and NOI
represents a very interesting development for Hydralift. Furthermore, the Board
of Directors believe that the employees of Hydralift are content with NOI's
offer. [Comment: The employees may issue its own statement. In such situation,
it should be assumed that the board statement will refer to the employee
statement.]

NOI's offer price is NOK xx in cash for each Hydralift share. This represents a
premium of xx per cent to the Hydralift share closing price at NOK [ ] on the
Oslo Stock


                                       2


Exchange on 10 October, 2002; the day before the Combination Agreement was
announced.

The Board of Directors has for the purpose of the evaluation of the offer
received a separate opinion from Pareto Securities ASA, who has expressed the
view, based on the current market conditions, that the price offered is a fair
price for the Hydralift shares.

Based on an overall evaluation the Board of Directors of Hydralift recommends
that the Hydralift shareholders accept the offer from NOI.

Such recommendation may, however, subject to the provisions of Section 1.3 of
the Combination Agreement, be withdrawn before the end of the Tender Offer
Period if there is launched a competing offer and after having obtained advice
from its legal counsel, determines in good faith that a failure to so cancel,
modify or amend its recommendation would under applicable laws constitute a
breach of its fiduciary duties towards the shareholders of Hydralift.. If NOI in
such case increases its Offer to or above the competing bid, we will uphold and
express our recommendation of the increased Offer from NOI.

Further, our recommendation is subject to the fact that all relevant
governmental bodies approves the transactions without issuing requirements
materially effecting the future business of the companies. The following members
of the Board of Directors hold shares in Hydralift:

[ ]

Furthermore, ( ), the Chief Executive Officer of Hydralift holds xxx shares.

The members of the Board of Directors and the Chief executive Officer has
granted call options to NOI as far as their own shares are concerned.

Hydralift shareholders should note that in the event that more than 90 per cent
of the Hydralift shareholders accept the offer, the result will in all
probability be that the


                                       3


Hydralift share will no longer be listed on the Oslo Stock Exchange and that the
minority shareholders will be redeemed.



                                 [ ], [ ], 2002

                       The Board of Directors of Hydralift






                         ANNEX 4 - MANAGEMENT COMMITMENT


In this statement, capitalised terms shall have the same meaning as in the
combination agreement entered into between NOI and Hydralift on the date hereof.

The undersigned have in a separate statement (the Hydralift Support Statement)
expressed our support of the combination of NOI and Hydralift. The undersigned
have also undertaken to grant NOI call option to purchase our shares subject to
the terms and conditions set out in a separate Letter Agreement regarding Call
Option.

The undersigned hereby confirm that we will not terminate our employment with
Hydralift for a period of three years from the Closing Date. Our employment
shall be based on our existing employment contracts, with the appropriate
amendments required by the consummation of the Tender Offer. The revised
employment contracts shall be entered into prior to the start of the Tender
Offer Period.


                         Kristiansand, 10 October, 2002



/s/ Bjarne Skeie                                    /s/ Birger Skeie
- -----------------------                             -----------------------
Bjarne Skeie                                        Birger Skeie
Chairman of the Board                               Managing Director





                        ANNEX 5 - NON-COMPETE OBLIGATION


In this statement, capitalised terms shall have the same meaning as in the
combination agreement entered into between NOI and Hydralift on the date hereof.

The undersigned confirm that for a period of five years from the Closing Date,
none of us shall, directly or indirectly, be engaged in any business or activity
conducted by NOI or Hydralift, or any of their Subsidiaries, on the date hereof,
including, without limitation, production, assembly, marketing, distribution and
sales of:

       (i)    Drilling and compensation equipment for fixed and floating
              offshore installations;

       (ii)   Surface and sub sea handling equipment for offshore activities;

       (iii)  Handling equipment for marine activities;

       (iv)   Downhole fishing tools, downhole drilling motors, drilling jars
              and shock tools, SCR systems, Plunger Pumps, drilling and
              production expendables, oil and gas well drilling equipment,
              including all sizes of drilling and workover rigs, coiled tubing
              equipment, handling tools, centrifugal pumps, and cranes,

provided, however, that the above shall not prevent the undersigned from
acquiring or owning directly or indirectly up to 10% of the capital stock and
votes of any listed company.

NOI acknowledge to be aware that the Skeie Group AS has owned approx. 30 -40% of
Sinvest ASA and presently owns approx. 30% of Sinvest ASA. NOI hereby confirms
that the Skeie Group AS can continue to own 30-40% of Sinvest ASA and that this
shall not be considered a breach of this non-compete obligation, so long as
Sinvest ASA does not change or expand its current scope of activities in such
way that it becomes engaged in any business or activity conducted by NOI or
Hydralift, or any of their Subsidiaries, on the date hereof, including, without
limitation,


                                       2


production, assembly, marketing, distribution and sales of such
equipment as covered by (i) through (iv) above in this non-compete obligation.


                         Kristiansand, 10 October, 2002



/s/ Bjarne Skeie                                        /s/ Bjarne Skeie
- ---------------------                                   ----------------------
Bjarne Skeie                                            Skeie Group AS



                    ANNEX 6 - REPRESENTATIONS AND WARRANTIES


I. HYDRALIFT REPRESENTATIONS AND WARRANTIES

Hydralift hereby represents and warrants to NOI that, except only as disclosed
in the audited consolidated accounts of Hydralift and for the year ended
December 31, 2001:

A. ORGANIZATION AND QUALIFICATION; SUBSIDIARIES. Hydralift and each of its
respective subsidiaries and affiliated companies (the "Subsidiaries") have been
duly organized and is validly existing under the laws of the jurisdiction of its
incorporation or organization, as the case may be, and has the requisite power
and authority and all necessary governmental approvals to own, lease and operate
its properties and to carry on its business as it is now being conducted.

B. FINANCIAL STATEMENTS. The audited consolidated accounts of Hydralift as of
December 31, 2001, and the consolidated interim accounts of Hydralift as of
March 31, 2002 and June 30, 2002, respectively, are complete and correct in all
material respects and truly and correctly reflect the results of operation, the
financial condition, and the assets and liabilities of Hydralift, respectively,
as at the relevant date and have been prepared in conformity with the generally
accepted accounting principles applied in their respective jurisdictions.

C. CAPITALIZATION. The authorized share capital of Hydralift is as described in
the interim financial statement of Hydralift as of June 30, 2002 and except as
described therein there are no warrants, options or other rights, arrangements
or commitments of any character to which Hydralift is a party or by which it is
bound relating to its issued or un-issued capital stock or obligating it to
issue or sell any shares of capital stock of, or other equity interests in,
Hydralift or any Subsidiary and there are no outstanding contractual obligations
of Hydralift or any Subsidiary to redeem or otherwise acquire any of its shares
or any shares of any of its Subsidiaries. Each outstanding share of each
Subsidiary is duly authorized, validly issued and fully paid and each such share
owned by Hydralift or another of its Subsidiaries is free and clear of all
security interests, liens, claims, pledges, options, rights of first refusal,
agreements, limitations on Hydralift or such other Subsidiary's voting rights,
charges and


                                       2


other encumbrances of any nature whatsoever, except where failure to
own such shares free and clear would not, individually or in the aggregate, have
a Material Adverse Effect.

D. AUTHORITY RELATIVE TO THIS AGREEMENT. Hydralift has all necessary corporate
power and authority to execute and deliver this Agreement and to perform its
obligations hereunder. The execution and delivery of this Agreement by Hydralift
have been duly and validly authorized by all necessary corporate action and no
other corporate proceedings on its part are necessary to authorize this
Agreement. This Agreement has been duly authorized and validly executed and
delivered by Hydralift and constitutes a legal, valid and binding obligation of
Hydralift enforceable against it in accordance with its terms.

E. NO CONFLICT: REQUIRED FILINGS AND CONSENTS. The execution and delivery of
this Agreement by Hydralift does not, and the performance by Hydralift of this
Agreement will not, (i) conflict with or violate any provision of its Articles
of Association or other corporate organization documents or any equivalent
organizational documents of any of its Subsidiaries, (ii) conflict with or
violate any law applicable to Hydralift or any of its Subsidiaries, or (iii)
result in any breach of or constitute a default (or an event which with notice
or lapse of time or both would become a default) under, or give to others any
right of termination, amendment, acceleration or cancellation of, or result in
the creation of a lien or other encumbrance on any property or asset of
Hydralift or any of its Subsidiaries pursuant to, any note, bond, mortgage,
indenture, contract, agreement, lease, license, permit, franchise or other
instrument or obligation, except, with respect to clauses (ii) and (iii), for
any such conflicts, violations, breaches, defaults, or other occurrences which
would neither, individually or in the aggregate, (A) have a Material Adverse
Effect nor (B) prevent or materially delay the performance of this Agreement.

F. ABSENCE OF CERTAIN CHANGES OR EVENTS. Since January 1, 2002, Hydralift and
each of its Subsidiaries have conducted their businesses only in the ordinary
course and in a manner consistent with past practice and, since such date, there
has not been (a) any Material Adverse Effect, (b) any event that could
reasonably be expected to prevent or materially delay the performance of this
Agreement, (c) any material change in its accounting methods, principles or
practices, (d) any declaration, setting aside or payment of any dividend or its
distribution in respect of shares or any redemption, purchase or other
acquisition of any of its


                                       3


other securities other than the regular annual dividend on each share, or (e)
any significant increase in the compensation or benefits or establishment of any
bonus, insurance, severance, deferred compensation, pension, retirement, profit
sharing, stock option (including, without limitation, the granting of stock
options, stock appreciation rights or performance awards), or other employee
benefit plan, or any other increase in the compensation payable or to become
payable to any executive officers of Hydralift or any Subsidiary except in the
ordinary course of business consistent with past practice or except as required
by applicable law.

G. CONTRACTS; DEBT INSTRUMENTS; There is no contract or agreement of Hydralift
or its Subsidiaries the termination of which would be material to its business,
financial condition or results of operations (each, a "Material Contract").
Neither Hydralift nor any of its Subsidiaries is in violation of or in default
under (nor does there exist any condition which upon the passage of time or the
giving of notice would cause such a violation of or default under) any loan or
credit agreement, note, bond, mortgage, indenture , lease, disposal of assets,
shares or business, or any other contract, agreement, arrangement or
understanding to which it is a party or by which it or any of its properties or
assets is bound, except for violations or defaults that would not individually
or in the aggregate, result in a Material Adverse Effect.

H. PUBLIC DOCUMENTS. All public announcements and publicly filed information
issued by it through the Oslo B0rs, including, but not limited to, any
prospectuses or documents to Shareholders, were when published true and accurate
in all material respects and were not misleading in any material respect and
there were no material omissions from them.

I. ENVIRONMENTAL. There are no environmental conditions or circumstances, such
as the presence or release of any hazardous substance, on any property presently
or previously owned or leased by Hydralift or any of its Subsidiaries that could
have a Material Adverse Effect.

J. LITIGATION. There is no suit, claim, action, proceeding or investigation
pending or threatened against Hydralift or any of its Subsidiaries before any
governmental entity or other third party which, individually or in the
aggregate, is reasonably likely to have a Material Adverse Effect nor is
Hydralift or any of its Subsidiaries subject to any outstanding


                                       4


Order, writ, injunction or decree which, insofar as can be reasonably foreseen,
individually or in the aggregate, would have a Material Adverse Effect.

K. TAXES. Except for such matters that would not have a Material Adverse Effect,
(a) Hydralift and each of its Subsidiaries have timely filed or will timely file
all returns and reports required to be filed by them with any taxing authority
with respect to taxes for any period ending on or before the Closing Date, (b)
all taxes shown to be payable on such returns or reports that are due, prior to
the Closing Date have been paid or will be paid, (c) as of the date hereof, no
deficiency for any material amount of tax has been asserted or assessed by a
taxing authority against Hydralift or its Subsidiaries; and (d) Hydralift and
each of its Subsidiaries have provided adequate reserves in their financial
statements for any taxes that have not been paid, whether or not shown as being
due on any returns.




                          ANNEX 7 - FORM OF CALL OPTION


TO NATIONAL OILWELL INC. ("NOI")


LETTER AGREEMENT REGARDING CALL OPTION


       I have reviewed the Combination Agreement ("Agreement") to be entered
       into between NOI and the Board of Hydralift dated on 10 October, 2002,
       pursuant to which NOI, subject to the terms and conditions in the
       Agreement and its Annex 1, will present a voluntary offer ("the Tender
       Offer") to acquire all the shares in Hydralift ASA ("Hydralift").
       Capitilized terms used herein will, unless otherwise stated, have the
       same meaning as in the Agreement.

       As of this date I own [ ] Hydralift Shares (the "Option Shares").

       Under the Tender Offer, the shareholders will for each Hydralift Share be
       offered NOK 55 in cash.


       A.   CALL OPTION

       1.   I hereby grant NOI an option (the "Call Option") to purchase the
            Option Shares at a price of NOK 55 (the "Option Price") per share.
            In consideration of the grant of the Call Option, NOI shall pay an
            option premium of NOK 1.68 per Option Share (the "Option Premium").
            The Option Premium is payable three (3) business days after this
            irrevocable undertaking was duly executed by me and received by NOI.
            NOI may only exercise the Call Option by serving a written exercise
            notice (the "Exercise Notice") on me during the period beginning on
            10 October 2002 and ending on 31 March 2003 (both dates inclusive)
            (the "Option Exercise Period"). The Call Option may only be
            exercised in respect of all Option Shares. If the Call Option is not
            exercised within the Option Exercise Period it shall cease to be
            exercisable and shall laps. Upon the exercise of the Call Option,
            where Pareto Securities ASA shall represent the undersigned and
            First Securities ASA ("First") shall represent NOI,


                                       2

            the Option Shares shall be transferred to a VPS book-entry account
            designated by NOI held by First three (3) business days after NOI
            having sent the Exercise Notice to me. The Option Price is payable
            three (3) business days after the relevant shares are registered on
            the designated VPS account. It is agreed that First shall not have
            any obligation or liability to fulfill NOI' or my obligations
            pursuant to this undertaking, cf. the Securities Trading Act Section
            11-1. The Option Premium shall be transferred to a bank account
            designated by me with a Norwegian commercial bank (the "Escrow
            Account") held by me. The Escrow account shall be pledged and
            blocked in favor of NOI as set in Schedule 2. The pledge and
            blocking shall be perfected, and such perfection confirmed to NOI,
            prior to the transfer of Option Premium. First shall not transfer
            Option Shares to NOI until the Option Price has been transferred to
            the Escrow Account.

       2.   I agree and undertake that as from the date of this undertaking for
            a period ending on the expiry of the Option Exercise Period that I
            will not, except pursuant to the Call Option and/or the Tender Offer
            referred to above, offer, sell, contract to sell, mortgage, charge,
            deposit, assign, issue options or warrants in respect of, grant any
            option to purchase or otherwise dispose of, directly or indirectly
            (whether conditionally or unconditionally), any Hydralift Shares (or
            any other securities convertible into or exchangeable for Hydralift
            Shares or which carry rights to subscribe or purchase Hydralift
            Shares) or enter into any transaction (including a derivative
            transaction) having an effect on the market in the Hydralift Shares
            similar to that of a sale or publicly to announce any intention to
            do any of such things or deposit any Hydralift Shares without the
            prior written consent of NOI.

       B.   MISCELLANEOUS

       3.   According to the Hydralift share option scheme (the "Scheme") I am
            entitled to subscribe for a number of shares in Hydralift in
            relation to the options granted under the Scheme (the "Option(s)"):

            a.   subject to subparagraph b below, if I exercise any of the
                 Option(s), NOI may also elect to purchase any such Hydralift
                 Shares on the terms and conditions


                                       3


                 set out in paragraph 1 above, however it being understood that
                 I am entitled to any additional Option Premium (on such
                 election and alloment, those shares shall be treated as Option
                 Shares for the purposes of this undertaking;)

            b.   if permitted by the rules of the Scheme and if NOI requires, I
                 confirm that I will release my Option(s) in consideration of
                 being granted rights which are equivalent to the Option(s) but
                 which relate to ordinary shares in NOI and/or

            c.   I confirm that I will release my Option(s) in consideration of
                 any cash payment offered by NOI, calculated by reference to the
                 difference between the Option Price per share and the
                 subscription price per share under my Option(s);

       6.   I agree that a transfer restriction, right of access to registered
            information, and/or the rights pursuant to the Call Option may, if
            requested by NOI, be registered on the relevant VPS book-entry
            account (where the Option Shares are held on the same account with
            other book-entry securities, the Option Shares are transferred to a
            separate account on which such rights are to be registered) and that
            such rights shall be in place until the Option Shares have been
            transferred to you or that the Call Option has expired.

       7.   I represent and warrant that the information in Schedule 1 is
            correct, accurate and not misleading. Schedule 1 set forth complete
            details of, in relation to my, at the date of this undertaking
            regarding:

            (a)  ownership of Hydralift Shares or any other securities,
                 exchangeable for or convertible into, or substantially similar
                 to, the Hydralift Shares);

            (b)  any contractual rights or obligation to, directly or
                 indirectly, acquire or sell such securities as mentioned above
                 in (a) or to effect any transactions (including derivative
                 transactions) having an effect on the market in the Hydralift
                 Shares similar to that of acquisitions or sales; and

                                       4


            (c)  any other contractual rights granted to third parties
                 (including, but not limited to, security interests) in respect
                 of such securities mentioned above in (a).

       8.   I agree, to the extent permitted by Norwegian law, to exercise all
            voting rights attaching to the Option Shares in such manner as to
            enable the Tender Offer to be made and become unconditional and to
            oppose the taking of any action which might result in any condition
            of the Tender Offer not being satisfied.

       9.   The Option Shares will be transferred to NOI free of all charges,
            liens, encumbrances and any other third party rights.

       10.  I agree not to make any public announcement or communication in
            connection with the Tender Offer, or concerning Hydralift and its
            subsidiary undertakings which is or may be material in the context
            of the Tender Offer, without your prior written consent, save any
            such public announcement or communication if and to the extent that
            it is required by any applicable law or stock exchange requirement
            and provided that prior to the making or dispatch thereof we shall
            consult with you as to the dispatch thereof and take into account
            all reasonable requirements on your part in relation thereto.

       11.  I accept that this irrevocable undertaking and my identity may be
            made public in connection with the public announcement to be made by
            NOI regarding the Tender Offer and in particular that the details of
            this letter may be set out in the formal document containing the
            Tender Offer. Such announcement may be made as soon as this letter
            is signed by me. I reserve the right to make a public announcement
            of this irrevocable undertaking in connection with the public
            announcement to be made by NOI regarding the Tender Offer

       12.  In this letter, references to the Tender Offer and offer period
            shall include any prolonged offer/offer period and any revised offer
            made by NOI.

       13.  This irrevocable undertaking is governed by and shall be construed
            in accordance with Norwegian law, and the legal venue is Oslo City
            Court.

                                       5


Yours sincerely



[NAME OF SHAREHOLDER]


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




                                   SCHEDULE 1

                        PARTICULARS OF SHAREHOLDINGS ETC.

<Table>
<Caption>
- ------------------------------------------------------------------------------------------------------
NAME OF             NUMBER             VPS               DETAILS OF ANY
REGISTERED          OF                 ACCOUNT           THIRD PARTY RIGHTS
SHAREHOLDER         SHARES             NUMBER            IN SUCH SHARES
- ------------------------------------------------------------------------------------------------------
                                               

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


- ------------------------------------------------------------------------------------------------------
</Table>


<Table>

- ------------------------------------------------------------------------------------------------------
       DESCRIPTION OF OTHER RIGHTS RELATED TO THE SHARES
- ------------------------------------------------------------------------------------------------------
                                               

- ------------------------------------------------------------------------------------------------------
</Table>