TRMA Trico Marine Services (MM)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Item 1.

Security and Issuer

The title of the class of equity securities to which this statement relates is the Common Stock issued by the Company. The address of the principal executive office of the Company is 10001 Woodloch Forest Dr., Suite 610, The Woodlands, Texas 77380.

Item 2.

Identity and Background

(a)

Name of Persons Filing (the “Reporting Persons”):

Kistefos AS (“Kistefos”)

Christen Sveaas

(b)

Business address of Reporting Persons:

Stranden 1, N-0250 Oslo, Norway

(c)

Christen Sveaas’ principal occupation is as the chairman and sole owner of Kistefos. Kistefos’ address is Stranden 1, N-0250 Oslo, Norway.

Kistefos is a privately owned investment company with a portfolio of listed and unlisted companies in the offshore services, shipping, property development and IT/telecommunications sectors.

(d)

During the last five years, neither Christen Sveaas, Kistefos nor their affiliates has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e)

During the last five years, neither Christen Sveaas, Kistefos nor their affiliates were a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

(f)

Citizenship:

Christen Sveaas is a citizen of Norway.

Kistefos is a Norwegian aksjeselskap (stock company).

Item 3.

Source and Amount of Funds or Other Consideration

Kistefos is the holder of the Common Stock to which this statement relates. The sole owner of Kistefos is Christen Sveaas.

The Reporting Persons hereby incorporate by reference the information contained in Item 3 of Amendment 26 to this Schedule 13D.

Item 4.

Purpose of Transaction

The Reporting Persons hereby incorporate by reference the information contained in Item 4 of Amendment 34 to this Schedule 13D.

Item 4 is hereby amended to add the following:

On June 4, 2010, Kistefos issued a press release reaffirming Kistefos’ intention to vote the Common Stock held by Kistefos at the Company’s 2010 Annual Meeting against the Company’s director nominees and other proposals. A copy of the press release issued by Kistefos is attached hereto as Exhibit 21. The description herein of the press release is qualified in its entirety by reference to the press release.

THIS SCHEDULE 13D/A (INCLUDING ALL EXHIBITS HERETO) IS NOT, NOR SHALL IT BE DEEMED TO BE, A SOLICITATION OF PROXIES FOR THE COMPANY’S UPCOMING 2010 ANNUAL MEETING.

Except as set forth in this Item 4, the Reporting Persons have no present plans or proposals that relate to or that would result in any of the actions specified in Item 4 of Schedule 13D, but the Reporting Persons reserve the right to propose or undertake or participate in any such actions in the future in light of its ongoing evaluation of (a) the Company’s business and liquidity, (b) the Company’s financial condition, business operations, competitive position, prospects and/or share price, (c) industry, economic and/or securities markets conditions, (d) alternative investment opportunities and (e) other relevant factors. Without limiting the generality of the preceding sentence, Kistefos reserves the right to, at any time or from time to time, (i) purchase or otherwise acquire additional shares of Common Stock, or other securities of the Company, or instruments convertible into or exercisable for any such securities (collectively, “Company Securities”), in the open market, in privately negotiated transactions or otherwise, (ii) sell, transfer or otherwise dispose of Company Securities in the open market, in privately negotiated transactions or otherwise, (iii) cause Company Securities to be distributed in kind to its investors, (iv) acquire or write options contracts, or enter into derivatives or hedging transactions, relating to Company Securities, (v) engage in the solicitation of proxies to effect a change in the composition or size of the present Board of Directors or management of the Company, or (vi) encourage (including, without limitation, through communications with the Company’s directors and management, existing or potential security holders, investors, lenders or strategic partners, and investment and financing professionals or through active representation on the Board) the Company to consider or explore (A) sales or acquisitions of assets or businesses, including a sale of the US operations to remove the Jones Act restrictions on the ownership of the Company’s shares and citizenship of its directors and officers, or extraordinary corporate transactions, such as a merger or other reorganization, (B) changes to the Company’s capitalization or dividend policy, or (C) other changes to the Company’s business, structure or charter.

Item 5.

Interest in Securities of the Issuer

Kistefos is the owner of 3,535,959 shares of the Common Stock. These shares represent approximately 18.1% of the Common Stock computed in accordance with Rule 13d-3. Kistefos has shared voting and dispositive power with Christen Sveaas with respect to these shares.

Kistefos is directly owned 63.2% by Christen Sveaas, 32.3% by Svolder Holding AS, a Norwegian aksjeselskap (stock company), and 4.5% by an entity directly owned by Christen Sveaas. Mr. Sveaas indirectly owns Svolder Holding AS.

As the sole beneficial owner of Kistefos, Christen Sveaas is the beneficial owner of 3,535,959 shares of the Common Stock, These shares represent approximately 18.1% of the Common Stock computed in accordance with Rule 13d-3. Christen Sveaas has shared voting and dispositive power with Kistefos with respect to the shares it owns due to his ownership control of Kistefos.

The calculation of the percentages of beneficial ownership of the Common Stock set forth herein is based upon the 19,538,017 shares of Common Stock outstanding as of May 5, 2010, as disclosed in the Company’s Quarterly Report on Form 10-Q filed on May 10, 2010.

The Reporting Persons hereby incorporate by reference the information on share acquisitions contained in Item 5 of Amendment 26 to this Schedule 13D.

Item 6.

Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

The Reporting Persons hereby incorporate by reference the information contained in Item 6 of Amendment 26 to this Schedule 13D.

Except as otherwise set forth in Amendment No. 34 to this Schedule 13D, none of the Reporting Persons has any contract, arrangement, understanding or relationship (legal or otherwise) with any person with respect to any securities of the Company, including but not limited to, any contract, arrangement, understanding or relationship concerning the transfer or voting of any securities of the Company, finder’s fees, joint ventures, loan or option arrangements, puts or calls, guaranties of profits, division of profits or loss or the giving or withholding of proxies.

Item 7.

Material to be Filed as Exhibits

1.          An Agreement for Joint Filing pursuant to Rule 13d-1(k)(i) under the Exchange Act (incorporated by reference from the initial Schedule 13D filed by the Reporting Persons on March 25, 2005).

2.          A power of attorney dated as of October 7, 2005 naming Frode Jensen, Esq. and Neal Beaton, Esq. as attorneys-in-fact for Kistefos AS and Christen Sveaas (incorporated by reference from Amendment No. 25 to this Schedule 13D filed by the Reporting Persons on September 10, 2008).

3.          A letter dated May 4, 2007 from Mr. Åge Korsvold, Chief Executive Officer of Kistefos AS, to the Board of Directors of the Company (incorporated by reference from Amendment No. 11 to this Schedule 13D filed by the Reporting Persons on May 4, 2007).

4.          The Stock Purchase Agreement dated as of August 9, 2007 between Kistefos and the Company (incorporated by reference from Amendment No. 14 to this Schedule 13D filed by the Reporting Persons on August 14, 2007).

5.          Amendment No. 1 dated as of August 21, 2007 to the Stock Purchase Agreement dated as of August 9, 2007 between Kistefos and the Company (incorporated by reference from Amendment 19 to this Schedule 13D filed by the Reporting Persons on August 27, 2007).

6.          Registration Rights Agreement dated as of March 15, 2005 by and among the Company and certain holders (as therein defined) (incorporated by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K filed March 16, 2005).

7.          Letter agreement dated as of August 24, 2007 relating to the Registration Rights Agreement dated as of March 15, 2005 (incorporated by reference from Amendment 19 to this Schedule 13D filed by the Reporting Persons on August 27, 2007).

8.          A letter dated December 23, 2008 from Mr. Åge Korsvold, Chief Executive Officer of Kistefos AS, to the Board of Directors of the Company (incorporated by reference from Amendment 27 to this Schedule 13D filed by the Reporting Persons on December 24, 2008).

9.          Press release issued by Kistefos on December 23, 2008 (incorporated by reference from Amendment 27 to this Schedule 13D filed by the Reporting Persons on December 24, 2008).

10.        A letter dated January 13, 2009 from Mr. Åge Korsvold, Chief Executive Officer of Kistefos AS, to Mr. Rishi Varma, Corporate Secretary of the Company, enclosing the revised Declassification Proposal (incorporated by reference from Amendment 28 to this Schedule I3D filed by the Reporting Persons on January 15, 2009).

11.        Demand Letter dated January 14, 2009 requesting inspection of stockholder records of the Company (incorporated by reference from Amendment 28 to this Schedule I3D filed by the Reporting Persons on January 15, 2009).

12.        Notice Letter dated February 27, 2009 Mr. Åge Korsvold to Mr. Rishi Varma, Corporate Secretary of the Company, nominating directors for election and submitting proposals to be considered at the 2009 annual meeting of stockholders (incorporated by reference from Amendment 29 to this Schedule 13D filed by the Reporting Persons on March 2, 2009).

13.        Press release issued by Kistefos on February 27, 2009 (incorporated by reference from Amendment 29 to this Schedule 13D filed by the Reporting Persons on March 2, 2009).

14.        Supplemental Notice dated March 5, 2009 from Kistefos to Mr. Rishi Varma, Corporate Secretary of the Company (incorporated by reference from Amendment 30 to this Schedule 13D filed by the Reporting Persons on March 6, 2009).

15.        14a-7 Demand Letter dated March 6, 2009 requesting the Company’s stockholder list and security position listings (incorporated by reference from Amendment 30 to this Schedule 13D filed by the Reporting Persons on March 6, 2009).

16.        Supplemental Notice Letter dated March 13, 2009 from Kistefos to Mr. Rishi Varma, Corporate Secretary of the Company (incorporated by reference from Amendment 31 to this Schedule 13D filed by the Reporting Persons on March 16, 2009).

17.        Letter dated March 13, 2009 from the Reporting Persons to the independent directors of the Company and related press release (incorporated by reference from Amendment 31 to this Schedule 13D filed by the Reporting Persons on March 16, 2009).

18.        Letter dated October 15, 2009 from Mr. Christen Sveaas, one of the Reporting Persons to Mr. Ben Guill, a director of the Company (incorporated by reference from Amendment 33 to this Schedule 13D filed by the Reporting Persons on October 16, 2009).

19.        Voting Intent Disclosure Letter dated May 10, 2010 from Mr. Christen Sveaas, one of the Reporting Persons, to Mr. Richard A. Bachmann, lead director of the Company (incorporated by reference from Amendment 34 to this Schedule 13D filed by the Reporting Persons on May 11, 2010).

20.        Demand Letter dated May 11, 2010 requesting inspection of stockholder records of the Company (incorporated by reference from Amendment 34 to this Schedule 13D filed by the Reporting Persons on May 11, 2010).

21.        Press release issued by Kistefos on June 4, 2010 (filed herewith).

Dated: June 4, 2010

Kistefos AS

By:

/s/ Frode Jensen

Frode Jensen, Esq.

Attorney-in-fact for Kistefos AS

Christen Sveaas

By:

/s/ Frode Jensen

Frode Jensen, Esq.

Attorney-in-fact for Christen Sveaas

ATTENTION:

Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).