Overseas Shipholding Group, Inc. Announces Investor Event

Overseas Shipholding Group, Inc. (NYSE: OSG), a market leader providing global energy transportation services, announced today that Morten Arntzen, President and Chief Executive Officer, and members of the OSG management team, will speak to investors and analysts attending the Company’s investor event on Thursday, March 27, 2008 in New York City. A webcast of the event and an accompanying slide presentation will be available on Overseas Shipholding Group’s website at www.osg.com in the Investor Relations Webcasts and Presentations section. The webcast will be available for 90 days. For more information about the invitation-only event, please contact Jennifer Schlueter, Vice President of Investor Relations at +1 212-578-1634. ABOUT OSG Overseas Shipholding Group, Inc. (NYSE: OSG), a Dow Jones Transportation Index company, is one of the largest publicly traded tanker companies in the world. As a market leader in global energy transportation services for crude oil and petroleum products in the U.S. and International Flag markets, OSG is committed to setting high standards of excellence for its quality, safety and environmental programs. OSG is recognized as one of the world’s most customer-focused marine transportation companies and is headquartered in New York City, NY. More information is available at www.osg.com.