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

OMB APPROVAL OMB Number: 3235-0104 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person *   BLACKLEY IAN T 2. Date of Event Requiring Statement (Month/Day/Year) 09/02/2005 3. Issuer Name and Ticker or Trading Symbol OVERSEAS SHIPHOLDING GROUP INC [OSG] (Last) (First) (Middle) 666 THIRD AVENUE 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) COO of OSG Ship Mgt. (UK) Ltd. 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) NEW YORK, NY 10017 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, par value $1.00 per share 346 (1) D   Common Stock, par value $1.00 per share 392 I (2) (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

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 Option (right to buy)	  (3)	01/12/2015	Common Stock	935	$ 52.4	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
BLACKLEY IAN T 666 THIRD AVENUE NEW YORK, NY 10017	Â	Â	  COO of OSG Ship Mgt. (UK) Ltd.	Â

Signatures

/s/James I. Edelson, Attorney-in-Fact, pursuant to power of attorney attached		09/08/2005
**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)	These shares of common stock were granted on January 12, 2005 pursuant to the Overseas Shipholding Group, Inc. 2004 Stock Incentive Plan (the "2004 Plan") and are subject to vesting restrictions. The reporting person becomes vested in one fourth of such shares on each of the first, second, third and fourth anniversaries of the date of grant.
(2)	The reporting person indirectly owns these shares of common stock through the Overseas Shipholding Group, Inc. 2000 Employee Stock Purchase Plan.
(3)	The option to purchase these shares of common stock was granted on January 12, 2005 pursuant to the 2004 Plan and will become exercisable as to one third of such shares on each of the first, second and third anniversaries of the date of grant.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.