FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   Houser Daniel M 2. Date of Event Requiring Statement (Month/Day/Year) 12/13/2010 3. Issuer Name and Ticker or Trading Symbol MCDERMOTT INTERNATIONAL INC [MDR] (Last) (First) (Middle) 757 N. ELDRIDGE PARKWAY 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior VP, Operations 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) HOUSTON, TX 77079 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 52,125.648 D   Common Stock 5,350 I 401K Plan (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Options (right to buy)	  (2)	03/18/2014	Common Stock	33,027	$ 1.55	D	Â
Stock Options (right to buy)	  (2)	05/12/2015	Common Stock	29,073	$ 3.47	D	Â
Restricted Stock Units	03/03/2011	03/03/2011	Common Stock	11,319	$ 0	D	Â
Stock Options (right to buy)	  (3)	03/05/2016	Common Stock	17,473	$ 5.64	D	Â
Restricted Stock Units	  (4)	  (4)	Common Stock	8,207	$ 0	D	Â
Restricted Stock Units	03/05/2012	03/05/2012	Common Stock	7,123	$ 0	D	Â
Stock Options (right to buy)	  (5)	03/04/2017	Common Stock	13,275	$ 13.09	D	Â
Restricted Stock Units	  (6)	  (6)	Common Stock	8,954	$ 0	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Houser Daniel M 757 N. ELDRIDGE PARKWAY HOUSTON, TX 77079	Â	Â	  Senior VP, Operations	Â

Signatures

Liane K. Hinrichs, by power of attorney		12/20/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Based upon units held in 401K Plan and the fair market value of Common Stock as of December 13, 2010.
(2)	100% of the options are vested.
(3)	The options are exercisable in three equal annual installments. The first installment became exercisable on March 5, 2010, and the next two installments become exercisable on March 5, 2011 and March 5, 2012.
(4)	The restricted stock units vest in three equal annual installments. The first installment vested on March 5, 2010, and the next two installments vest on March 5, 2011 and March 5, 2012.
(5)	The options are exercisable in three equal annual installments beginning March 4, 2011.
(6)	The restricted stock units vest in three equal annual installments beginning March 4, 2011.

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