SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549

                                    FORM 11-K

         [X]      ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
                  EXCHANGE ACT OF 1934

                  For the fiscal year ended December 31, 2002

                                       OR

         [ ]      TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
                  EXCHANGE ACT OF 1934

                  For the transition period from ____ to ____

                                 Commission File
                                  Number 1-5491

A.   Full title of the plan and the address of the plan, if different from that
     of the issuer named below:

                  LETOURNEAU, INC. SAVINGS AND INVESTMENT PLAN

B.   Name of issuer of the securities held pursuant to the plan and the address
     of its principal executive office:

                              Rowan Companies, Inc.
                              2800 Post Oak Boulevard, Suite 5450
                              Houston, Texas 77056-6127

                              REQUIRED INFORMATION

     The Letourneau, Inc. Savings and Investment Plan (the "Plan") Is subject to
the Employee Retirement Income Security Act of 1974 ("ERISA"). Therefore, in
lieu of the requirements of Items 1-3 of Form 11-K, The financial statements and
schedules of the Plan for and as of the fiscal year and fiscal year-ends
reflected therein, which have been prepared in accordance with the financial
reporting requirements of ERISA, are attached hereto as Appendix 1 and
incorporated herein by this reference.

                                   SIGNATURES

     The Plan, Pursuant to the requirements of the Securities and Exchange Act
of 1934, the trustees (or other persons who administer the employee benefit
plan) have duly caused this annual report to be signed on its behalf by the
undersigned hereunto duly authorized.

                  LETOURNEAU, INC. SAVINGS AND INVESTMENT PLAN

                          BY: LeTourneau, Inc. Savings
                              And Investment Plan
                              Administrative Committee:

               /S/ JACK W. MCELROY                    June 27, 2003
                   Jack W. McElroy

               /S/ S. MARIA NARISI                    June 27, 2003
                   S. Maria Narisi

               /S/ E. E. THIELE                       June 27, 2003
                   E. E. Thiele



                                   APPENDIX 1

                                LETOURNEAU, INC.
                           SAVINGS AND INVESTMENT PLAN

              FINANCIAL STATEMENTS AS OF DECEMBER 31, 2002 AND 2001
          AND FOR THE YEARS THEN ENDED AND INDEPENDENT AUDITORS' REPORT



LETOURNEAU, INC. SAVINGS AND INVESTMENT PLAN

TABLE OF CONTENTS
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                                                                                             PAGE
                                                                                             ----
                                                                                          
INDEPENDENT AUDITORS' REPORT                                                                   1

FINANCIAL STATEMENTS:

   Statements of Net Assets Available for Benefits, December 31, 2002 and 2001                 2

   Statements of Changes in Net Assets Available for Benefits for the Years Ended
     December 31, 2002 and 2001                                                                3

   Notes to Financial Statements for the Years Ended December 31, 2002 and 2001                4




INDEPENDENT AUDITORS' REPORT

LeTourneau, Inc. Savings and Investment Plan:

We have audited the accompanying statements of net assets available for benefits
of the LeTourneau, Inc. Savings and Investment Plan (the "Plan") as of December
31, 2002 and 2001, and the related statements of changes in net assets available
for benefits for the years then ended. These financial statements are the
responsibility of the Plan's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States of America. Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

In our opinion, such financial statements present fairly, in all material
respects, the net assets available for benefits of the Plan as of December 31,
2002 and 2001 and the changes in net assets available for benefits for the years
then ended in conformity with accounting principles generally accepted in the
United States of America.

DELOITTE & TOUCHE LLP

Houston, Texas
June 27, 2003

                                      -1-


LETOURNEAU, INC. SAVINGS AND INVESTMENT PLAN

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS,
DECEMBER 31, 2002 AND 2001
--------------------------------------------------------------------------------


                                             2002                2001
                                                       
ASSETS:
   Investments - at fair value           $ 33,394,264        $ 33,275,401
   Receivables:
      Employee contributions                  210,185             272,140
      Employer contributions                   78,835              71,906
                                         ------------        ------------

NET ASSETS AVAILABLE FOR BENEFITS        $ 33,683,284        $ 33,619,447
                                         ============        ============


See notes to financial statements.

                                      -2-


LETOURNEAU, INC. SAVINGS AND INVESTMENT PLAN

STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
FOR THE YEARS ENDED DECEMBER 31, 2002 AND 2001
--------------------------------------------------------------------------------


                                                                  2002            2001
                                                                        
ADDITIONS:
   Contributions:
      Employee                                                $   2,913,550   $   2,968,232
      Employer                                                    1,022,978         799,323
   Merger of Oilfield-Electric-Marine plan                          444,913
                                                              -------------   -------------
         Total additions                                          4,381,441       3,767,555
                                                              -------------   -------------
DEDUCTIONS:
   Plan interest in Rowan Master Trust net investment loss        2,250,773       2,742,173
   Employee withdrawals                                           2,066,831       2,260,622
                                                              -------------   -------------
         Total deductions                                         4,317,604       5,002,795
                                                              -------------   -------------
INCREASE (DECREASE) IN NET ASSETS
   AVAILABLE FOR BENEFITS                                            63,837      (1,235,240)

NET ASSETS AVAILABLE FOR BENEFITS:
   Beginning of year                                             33,619,447      34,854,687
                                                              -------------   -------------
   End of year                                                $  33,683,284   $  33,619,447
                                                              =============   =============


See notes to financial statements.

                                      -3-


LETOURNEAU, INC. SAVINGS AND INVESTMENT PLAN

NOTES TO FINANCIAL STATEMENTS
FOR THE YEARS ENDED DECEMBER 31, 2002 AND 2001
--------------------------------------------------------------------------------

1.    PLAN DESCRIPTION

      The following brief description of the LeTourneau, Inc. Savings and
      Investment Plan (the "Plan") is provided for general informational
      purposes only. Participants should refer to the Plan agreement for more
      complete information.

      GENERAL - The Plan is a defined contribution, individual account 401(k)
      plan covering substantially all employees of LeTourneau, Inc. and its
      wholly owned subsidiary, LeTourneau Sales and Service Company,
      collectively referred to herein as "LeTourneau". During 2002, following an
      aquisition by LeTourneau's parent company of Oilfield-Electric-Marine,
      Inc. (OEM), the assets of the TRS Oilfield-Electric-Marine 401(k) Plan
      were merged into the Plan and all eligible OEM employees became
      participants of the Plan.

      PARTICIPATION - Employees are eligible to enter the Plan on the January 1
      or July 1 immediately following the completion of 1,000 hours of service
      in the 12-month period beginning on the employee's date of hire and ending
      on the anniversary of such date.

      FUNDING - Under the Plan, participants may make basic contributions of up
      to 6% and additional contributions of up to 14% of their regular
      compensation on a before- or after-tax basis. LeTourneau makes a matching
      contribution equal to 50% of a participant's basic, pre-tax contribution.

      INVESTMENT OPTIONS - The assets of the Plan are held in a master trust and
      managed by Fidelity Management Trust Company, the Trustee of the Plan (the
      "Trustee"). Plan participants direct the investment of their accounts
      among the Plan's investment options and may, at their sole discretion,
      transfer amounts between such options, including the Rowan Companies
      Unitized Stock Fund, at any time.

      EXPENSES - Participants' accounts are charged with investment advisory and
      other fees by the Trustee. Other expenses of administering the Plan and
      master trust are borne by the Plan or by LeTourneau, at its discretion.

      VESTING PROVISIONS - Participants are 100% vested at all times in their
      own contributions, plus any earnings accrued thereon, and achieve 100%
      vesting in employer matching contributions, plus any earnings thereon,
      after three years or more of qualified service.

      Participants at age 65 are entitled to 100% of all contributions, plus any
      earnings accrued thereon. Upon death or permanent disability, a
      participant, or his beneficiary, will be entitled to 100% of all
      contributions, plus any earnings accrued thereon.

      DISTRIBUTIONS - Participants can obtain lump-sum or installment
      distributions of vested balances upon termination of employment,
      retirement, disability or death. Other hardship withdrawals can be
      obtained under certain conditions. At December 31, 2002 and 2001, Plan
      assets included approximately $5,000 and $20,000, respectively, of
      distributions payable to former Plan participants.

                                      -4-


      FORFEITURES - Upon termination of employment, participants' nonvested
      balances are forfeited. Such forfeitures can be applied to reduce employer
      contributions or Plan administrative expenses otherwise payable by
      LeTourneau. During 2002 and 2001, LeTourneau utilized approximately
      $45,000 and $200,000, respectively, of employee forfeitures for employer
      contributions and Plan administrative expenses. At December 31, 2002 and
      2001, Plan assets included approximately $42,000 and $25,000,
      respectively, of nonvested forfeited accounts.

      PLAN TERMINATION - Although it has not expressed any intention to do so,
      LeTourneau may terminate the Plan at any time subject to the provisions of
      the Employee Retirement Income Security Act of 1974. In the event the Plan
      is terminated, each participant shall be entitled to 100% of all
      contributions, plus any earnings accrued thereon, as of the date of
      termination.

      PARTY-IN-INTEREST TRANSACTIONS - The investment by the Trustee of Plan
      contributions into mutual funds managed by an affiliate of the Trustee are
      party-in-interest transactions, and the related management fees are
      deducted from investment earnings. Rowan is also a party-in-interest.

2.    SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

      BASIS OF ACCOUNTING - The financial statements are prepared on the accrual
      basis of accounting.

      INVESTMENT VALUATION AND INCOME RECOGNITION - The Plan's investments are
      stated at fair value as determined by quoted market prices. Purchases and
      sales of securities are recorded on a trade-date basis. Dividends are
      recorded on the ex-dividend date. The net increase (decrease) in fair
      value of investments consists of the net change in unrealized gains
      (losses) in fair values and realized gains (losses) upon the sale of
      investment securities. The net change in unrealized gains (losses) and
      realized gains (losses) upon sale are determined using fair values as of
      the beginning of the year or the purchase price if acquired during the
      year.

      PAYMENT OF BENEFITS - Benefits are recorded when paid.

      USE OF ESTIMATES - The preparation of financial statements in conformity
      with accounting principles generally accepted in the United States of
      America requires management to make estimates and assumptions that affect
      the reported amounts of assets and liabilities and changes therein, and
      disclosure of contingent assets and liabilities. Actual results could
      differ from those estimates.

      RECLASSIFICATIONS - Certain reclassifications have been made to the prior
      year's financial statements to conform to the current year presentation.

3.    RISKS AND UNCERTAINTIES

      The Plan provides for various investments in common stock and registered
      investment companies. Investment securities, in general, are exposed to
      various risks, such as interest rate, credit and overall market volatility
      risk. Due to the level of risk associated with certain investment
      securities, it is reasonably possible that changes in the values of
      investment securities will occur in the near term.

                                      -5-


4.    INVESTMENT IN ROWAN MASTER TRUST

      The Master Trust for Rowan Companies and Affiliates Defined Contribution
      Plans (the "Trust") commingles, for investment and administrative
      purposes, Plan assets with those of another plan sponsored by Rowan. The
      Trustee maintains supporting records for the purpose of allocating
      investment gains or losses to the participating plans. The investment
      accounts of the Trust are valued at fair value at the end of each trading
      day based upon quoted market prices. Net investment gains or losses for
      each day are allocated by the Trustee to each participating plan based on
      the plans' relative interest in the investment units of the Trust. At
      December 31, 2002 and 2001, the Trust held the following investments, at
      fair value:



                                                      2002                      2001

                                             Amount          %         Amount         %
                                           ------------    ----     ------------    ----
                                                                        
Investments - at fair
value:
    Rowan Companies Unitized Stock Fund    $ 11,362,999      14%    $ 10,321,204      14%
    Registered Investment Companies          68,355,683      86%      65,667,610      86%
                                           ------------             ------------
Total investments                          $ 79,718,682     100%    $ 75,988,814     100%
                                           ============             ============


      Investment income (loss) for the Trust for the years ended December 31,
      2002 and 2001 was as follows:



                                                                 2002                  2001
                                                                             
Investment income (loss):
    Increase (decrease) in fair value of investments:
      Rowan Companies Unitized Stock Fund                    $   2,091,295         $    (982,245)
      Registered Investment Companies                          (10,078,069)           (9,144,396)
    Interest and dividends                                       1,560,180             2,095,121
                                                             -------------         -------------
Net investment income (loss)                                 $  (6,426,594)        $  (8,031,520)
                                                             =============         =============


      The Plan's interest in the Trust's total investment units was
      approximately 42% at December 31, 2002 and 44% at December 31, 2001, with
      the balance attributed to the other Rowan-sponsored plan.

5.    TAX STATUS OF THE PLAN

      The Internal Revenue Service has determined and informed LeTourneau by a
      letter dated February 13, 1996, that the Plan and related trust are
      designed in accordance with applicable sections of the Internal Revenue
      Code ("IRC"). Though the Plan has been amended since that date, the Plan
      administrator and LeTourneau believe that the Plan continues to be
      designed and is currently being operated in compliance with the applicable
      requirements of the IRC. A request for a new determination letter has been
      made.

                                      -6-


                                INDEX TO EXHIBITS



Exhibit
Number                        Description
-------               -----------------------------
                   
   23.1               Independent Auditors' Consent