ENSCO MARITIME S-1/A IPO registration (amended)

Exhibit 3.198

BYLAWS OF RDC ARABIA DRILLING, INC . [formerly ROWAN NORTH SEA INVESTMENTS, INC.) ARTICLE I SHAREHOLDERS Section 1. Annual Meeting. The annual meeting of shareholders shall be held on the fourth Tuesday in April of each year at 8:00 a.m. if not a legal holiday, and if a legal holiday, then on the next succeeding business day, or at such other time or on such other date as may be fixed by resolution of the Board of Directors, for the purpose of electing directors. Any business may be transacted at an annual meeting, except as otherwise provided by law or by these bylaws. Section 2. Special Meeting. A special meeting of shareholders may be called at any time by the holders of at least ten percent (10%) of the outstanding stock entitled to be voted at such meeting, by the Board of Directors of by the President. Only such business shall be transacted at a special meeting as may be stated or indicated in the notice of such meeting.

Section 3. Place. The annual meeting of share­ holders may be held at any place within or without the State of Texas designated by the Board of Directors . Special meetings of shareholders may be held at any place within or without the State of Texas designated by the President, if he shall call the meeting. Any meeting may be held at any place within or without the State of Texas designated in a waiver of notice of such meeting signed by shareholders. Meetings of shareholders shall be held at the principal office of the corporation unless another place is designated for meetings in the manner provided herein. Section 4. Notice. Written or printed notice stating the place, day and hour of each meeting of shareholders and, in case of a special meeting, the purpose or purposes for which the meeting is called, shall be delivered not less than ten (10) nor more than fifty (50) days before the date of the meeting, either personally or by mail, to each shareholder of record entitled to vote at such meeting. Section 5. Quorum. The holders of at least a majority of the outstanding stock entitled to vote thereat and present in person or by proxy, shall con­ stitute a quorum. Except as otherwise required by law, the articles of incorporation or these bylaws, the

act of a majority of the stock at any meeting at which a quorum is prese nt shall be the act of the shareholders' meeting. The shareholders present at any meeting, though less than a quorum, may adjourn t he meeting and any business may be trans­ acted at the adjournment, other than the announcement at the meeting, need be given. Section 6. Proxies. At all meetings of share­ holders, a shareholder may vote either in person or by proxy executed in writing by the shareholder or by his duly authorized attorney in fact. Such proxies shall be filed with the Secretary of the corporation before or at the time of the meeting. No proxy shall be valid after eleven (11) months from the date of its execution unless otherwise provided in the proxy. Each proxy shall be revocable unless expressly provided therein to be irrevocable or unless otherwise made irrevocable by law. Section 7. Voting of Shares. Each outstanding share of a class entitled to vote upon a matter submitted to a vote at a meeting of shareholders shall be entitled to one vote on s uch matter. Section 8. List of Shareholders. A complete list of s hare holders entitled to vote at each share­ holders ' meeting, arranged in alphabetical order, with the address of and number of shares held by

each, shall be prepared by the Secretary and filed at the registered office of the corporation and shall be subject to inspection by any shareholder during usual business hours for a period of ten (10) days prior to such meeting and shall be produced at such meeting and at all times during such meeting be subject to inspection by any shareholder. Section 9. Action Without Meeting. Any action required by law to be taken at a meeting of share­ holders of the corporation, or any action which may be taken at a meeting of the shareholders thereof, may be taken without a meeting if a consent in writing setting forth the action so taken, is signed by all of the shareholders entitled to vote with respect to the subject matter thereof. Such consent shall have the same force and effect as a unanimous vote of shareholders , and may be stated as such in any articles or documents filed with the Secretary of State.

ARTICLE II BOARD OF DIRECTORS Section 1. Number and Term of Office. The business and property of the corporation shall be managed and controlled by the Board of Directors, and subject to the restrictions imposed by law, the articles of incorporation or by these bylaws, they may exercise all the powers of the corporation. The Board of Directors shall consist of three (3) directors, but the number of directors may be increased or decreased (provided such decrease does not shorten the term of any incumbent director) from time to time by amendment to the bylaws. Each director shall hold office for the term for which he is elected and until his successor shall have been elected and qualified. Directors need not be shareholders nor residents of Texas. Any director may be removed from office, with or without cause, by a majority vote of the shareholders at any meeting at which a quorum of shareholders is present. Any vacancy ocurring in the Board of Directors may be filled by the affirmative vote of a majority of the remaining directors though less than a quorum

of the Board of Directors. A director elected to fill a vacancy shall be elected for the unexpired term of his predecessor in office. In case of any increase in the number of directors the addi­ tional directors shall be elected at an annual meeting or at a special meeting of shareholders called for that purpose. Section 2. Meeting of Directors. The directors may hold their meetings and may have an office and keep the books of the corporation, except as other­ wise provided by statute, in such place or places in the State of Texas, or outside the State of Texas, as the Board of Directors may from time to time determine. Section 3. First Meeting. Each newly elected Board of Directors may hold its first meeting for the purpose of organization and the transaction of business, if a quorum is present, immediately after and at the same place as the annual meeting of the shareholders, and no notice of such meeting shall be necessary. Section 4. Election of Office rs. At the first meeting of the Board of Directors in each year at which a quorum shall be present, held next after the annual meeting of shareholders, the Board of Directors shall proceed to the election of the officers of the corporation.

Section 5 . Regular Meetings. Regular meetings of the Board of Directors shall be held at such times and places as shall be designated, from time to time by resolution of the Board of Directors. Notice of such regular meetings shall not be required. Section 6. Special M eetings. Special meetings of the Board of Directors shall be held whenever called by the President or by a majority of the directors for the time being in office. Section 7. Notice. The Secretary shall give notice of each special meeting in person, or by mail or telegraph to each director at least 24 hours before the time of such meeting. The attendance of a director at any meeting shall constitute a waiver of notice of such meeting, except where a director attends a meeting for the express purpose of objecting to the transaction of any business on the grounds that the meeting is not lawfully called or convened. Neither the business to be transacted at, nor the purpose of, any regular or special meeting of the Board of Directors need be speci fied in the notice or waiver of notice of such meeting. At any meeting at which every director shall be present, even though without any notice, any business may be transacted.

Section 8. Quorum. A majority of the directors fixed by these bylaws shall constitute a quorum for the transaction of business, but if at any meeting of the Board of Directors there be less than a quorum present, a majority of those present or any director solely present may adjourn the meeting from time to time without further notice. The act of a majority of the directors present at a meeting at which a quorum is in attendance shall be the act of the Board of Directors, unless the act of a greater number is required by the articles of incorporation or by these bylaws. Section 9. Order of Business. At meetings of the Board or Directors, business shall be transacted in such order as from time to time the Board may determine. At meetings of the Board of Directors, the President shall preside. In the absence of the President, a chair­ man shall be chosen by the Board from among the directors present. The Secretary of the corporation shall act as secretary of the meetings of the Board of Directors, but in the absence of t he Secretary, the presiding officer may appoint any person to act as secretary of the meeting. Section 10. Compensation. Directors as such shall not receive any stated salary for their service, but

by resolution of the Board a fixed sum and expense of attendance, if any, may be allowed for attendance at such regular or special meetings of the Board; provided, that nothing contained herein shall be construed to preclude any director from serving the corporation in any other capacity or receiving compensation therefor. Section 11. Presumption of Assent. A director o f the corporation who is present at a meeting of the Board of Directors at which action or any corporate matter is taken shall be presumed to have assented to the action unless his dissent shall b e entered in the minutes of the meeting or unless he shall file his written dissent to such action with the person acting as secretary of the meeting before the adjournment thereof or s hall forward such dissent by r egistered mail to the Secretary of the corporation immediately after the adjournment of the meeting. Such right to dissent s hall not apply to a director who voted in favor of such action. Section 12. Action Without Meeting. Any action permitted, or required by law, these bylaws or by the articles of incorporation of the corporation, to be taken at a meeting of the Board of Directors may be taken without a meeting if a consent in writing, setting forth the action so taken , is signed by all the members

of the Board of Directors. Such consent shall have the same force and effect as a unanimous vote at a meeting, and may be stated as such in any document or instrument filed with the Secretary of State.

ARTICLE III OFFICERS Section 1. Number, Titles and Term of Office. The officers of the corporation shall be a President, one or more Vice Presidents, a Secretary, a Treasurer and such other officers as the Board of Directors may from time to time elect or appoint. Each officer shall hold office until his successor shall have been duly elected and qualified or until his death or until he shall resign or shall have been removed in the manner hereinafter provided. One person may hold more than one office, except that the President shall not hold the office of Secretary. None of the officers need be a director. Section 2. Removal. Any officer or agent elected or appointed by the Board of Directors may be removed by the Board of Directors whenever in its judgment the best interests of the corporation will be served thereby, but such removal shall be without prejudice to the contract rights, if any, of the person so removed. Election or appointment of an officer or agent shall not of itself create contract rights.

Section 3. Vacancies. A vacancy in the office of any officer may be filled by vote of a majority of the directors for the unexpired portion of the term. Section 4. Powers and Duties of the President. The President shall be the chief executive officer of the corporation and, subject to the control of the Board of Directors, he shall have general executive charge, management and control of the properties, busi­ ness and operations or the corporation with all such powers as may be reasonably incident to such responsi­ bilities; he shall preside at all meetings of the shareholders and of the Board of Directors; he may agree upon and execute all leases, contracts, evidences of indebtedness and other obligations in the name of the corporation and may sign all certificates for shares of capital stock of the corporation; and shall have such other powers and duties as designated in these bylaws and as from time to time may be assigned to him by the Board of Directors. Section 5. Vice Presidents. In the absence of the President or in the event of his inability or refusal to act, a Vice President designated by the Board of Directors shall perform the duties of the President and when so acting shall have all the powers of and be subject to all the restrictions upon the President. The Vice Presidents shall perform such other

duties and have such other powers as the Board of Directors may from time to time prescribe. Section 6. Treasurer. The Treasure r s hall have custody of all the funds and securities of the corpora­ tion which come into his hands. When necessary or proper, he may endorse, on behalf of the corporation, for collection checks, notes and other obligations and shall depos it the same to the credit of the corpora­ tion in such bank or banks or depositaries as shall be designated in the ma nner prescribed by t he Board of Directors, he may sign all receipts and vouchers for payments made to the corporation , either alone or jointly with such other officer as is designated by the Board or Directors. Whe never r equired by the Board of Directors , he shall r e nder a s tateme nt of his cash account, he s hall e nter or cause to b e e ntered regularly in the books of the corporation to be kept by him for that purpose full and accurate accounts of all moneys received and paid out on account of the corporation; he shall perform all acts incident to the position of Treasurer subject to the control of t he Board of Directors ; he s hall, if required by the Board of Directors, give s u ch bond for the faithful discharge of h is dut i es in s uch form as the Board of Director s may r equire .

Section 7. Assistant Treasurer. Each Assistant Treasurer shall have the usual powers and duties per­ taining to his office, together with such other powers and duties as may be assigned to him by the Board of Directors. The Assistant Treasurers shall exercise the powers of the Treasurer during that officer's absence or inability to act. Section 8. Secretary. The Secretary shall keep the minutes of all meetings of the Board of Directors and the minutes of all meetings of the shareholders, in books provided for that purpose; he shall attend to the giving and serving of all notices; he may in the name of the corporation attest to all contracts of the corporation and affix the seal of the corporation thereto; he may sign with the President all certifi­ cates for shares of the capital stock of the corpora­ tion; he shall have charge of the certificate books, transfer books and stock ledgers, and such other books and papers as the Board of Directors may direct, all of which shall at all reasonable times be open to inspec­ tion of any director upon application at the office of the corporation during business hours, and he shall in general perform all duties incident to the office of Secretary, subject to the control of the Board of Directors.

Section 9. Assistant Secretaries. Each Assistant Secretary s hall have the usual powers and duties per­ taining to his office, together with such other powers and duties as may be assigned to him by the Board of Directors or the Secretary. The Assistant Secretaries shall exercise the powers of the Secretary during that officer's absence or inability to act.

ARTICLE IV INDEMNIFICATION OF DIRECTORS AND OFFICERS Each director and each officer or former director or officer of this corporation or each person who may have served at request as a director or officer of another corporation in which it owned shares or capital stock or of which it is a creditor, shall be indemnified by the corporation against liabilities imposed upon him and expenses reasonably incurred by him i n connection with any claim made against him, or any action, suit or proceeding to which he may be a party by reason of his being, or having been such director or officer, and against such sums as independent counsel selected by the Board of Directors shall deem reasonable payment made in settlement of any such claim, action, suit or proceeding primarily with a view of avoiding expenses of litigation ; provided, however, that no director or officer shall be indemnified with respect to matters as to which he shall be adjudged in such action, suit or proceeding to be liable for neglige nce or misconduct in performance of duty, or with respect to a ny matters which shall be settled by the payment of sums which counsel selected by the Board of Directors shall not deem reasonable payment made primarily with a view to

avoiding expenses of litigation, or with respect to matters for which such indemnification would be against public policy. Such right of indemnification shall be in addition to any other rights to which directors or officers may be entitled.

ARTICLE V CAPITAL STOCK Section 1. Certificates of Shares. The certifi­ cates for shares of the capital stock of the corporation shall be in such form as shall be approved by the Board o f Directors. The certificates shall be signed by the President or a Vice President, and also by the Secretary or an Assistant Secretary or by the Treasurer or an Assistant Treasurer and may be sealed with the seal of this corporation or a facsimile thereof. Where any such certificate is countersigned by a transfer agent, or registered by a registrar, either of which is other than the corporation itself or an employee of the corpora­ tion, the signatures of any such President or Vice Presi­ dent and Secretary or Assistant Secretary or Treasurer or Assistant Treasurer may be facsimiles. They shall be consecutively numbered and shall be entered in the books of the corporation as they are issued and shall exhibit the holder's name and number of shares. Section 2. Transfer of Shares. The shares of stock of the corporation shall be transferable only on the books of the corporation by the holders thereof in person or by their duly authorized attorneys or legal represen­ tatives, upon surrender and cancellation of certificates for a like number of shares.

Section 3. Closing of Transfer Books. For the purpose of determining shareholders entitled to notice of or to vote at any meeting of shareholders, or any adjournment thereof, or entitled to receive payment of any dividend, or in order to make a determination of shareholders for any other proper purpose, the Board of Directors of the corporation may provide that the stock transfer books shall be closed for a stated period but not to exceed in any case fifty (50) days. If the stock transfer books shall be closed for the purpose of determining shareholders entitled to notice of or to vote at a meeting of shareholders, such books shall be closed for ~t least ten (10) days immediately preceding such meeting. In lieu of closing the stock transfer books the Board of Directors may fix in advance a date as the record date for any such determination of shareholders, such date in any case to be not more than fifty (50) days and, in case of a meeting of shareholders, nor less than ten (10) days prior to the date on which the particular action requiring such determination of shareholders is to be taken. If the stock transfer books are not closed and no record date is fixed for the determination of shareholders entitled to notice of or to vote at a meeting of shareholders or share­ holders entitled to receive payment of a dividend, the

date on which the notice of the meeting is mailed or date on which the resolution of the Board of Directors declaring such dividend is adopted, as the case may be, shall be the record date for such determination of shareholders. Section 4. Regulations. The Board of Directors shall have power and authority to make all such rules and regulations as they may deem expedient concerning the issue, transfer and registration or the replacement of certificates for shares of the capital stock of the corporation.

ARTICLE VI MISCELLANEOUS PROVISIONS Section 1. Offices. Until the Board of Directors otherwise determines, the registered office of the corpora­ tion required by the Texas Business Corporation Act to be maintained in the State of Texas, shall be the principal place of business of the corporation, but such registered office may be changed f rom time to time by the Board of Directors in the manner provided by law and need not be identical to the principal place of business of the corporation. Section 2. Fiscal Year. The fiscal year of the corporation shall be such as the Board of Directors shall, by res olution establish. Section 3. Seal. The seal of the corporation shall be such as from time to time may be approved by the Board of Directors. Section 4. Notice and Waiver of Notice. Whenever any notice whatever is required to be given unde r the provisions of these bylaws, said notice shall be deemed to be sufficient if given by depositing the same in a post office box in a sealed postpaid wrapper addressed to the p erson entitled thereto at his post office address, as it appears on the books of the corporation, and such notice shall be deemed

to have been given on the day of such mailing. A waiver of notice, signed by the person or persons entitled to said notice, whether before or after the time stated therein, shall be deemed equivalent thereto. Section 5. Resignations. Any director or officer may resign at any time. Such resignations shall be made in writing and shall take effect at the time specified therein, or if no time is specified, at the time of its receipt by the President or Secretary. The acceptance of a resignation shall not be necessary to make it effective, unless expressly so provided in the resignation. Section 6. Securities of Other Corporations. The President or any Vice President of the corporation shall have power and authority to transfer, endorse for transfer, vote, consent or take any other action with respect to any securities or another issuer which may be held or owned by the corporation and to make, execute and deliver any waiver, proxy or consent with respect to such securities.

ARTICLE VII AMENDMENTS These bylaws may be altered, amended, or repealed by the affirmative vote of the holders of a majority of the outstanding stock at any annual meeting, or at any special meeting if notice of said special meeting, or by the affirmative vote of a majority of the full Board of Directors at any regular or special meeting, provided notice of said proposed amendment be contained in the notice of the meeting.