Mr. Arntzen, 49, is president and chief executive officer of Overseas Shipholding Inc. (OSG), one of the largest tanker owners in the world and a leading U.S.-based bulk shipping company. Prior to joining Overseas Shipholding in December 2003, Arntzen was the chief executive officer of American Marine Advisors (AMA), a leading merchant banking firm focused on the global shipping industry. Prior to joining AMA, he spent more than 17 years at Chase Manhattan Bank and its predecessors in a variety ...