Overseas Shipholding Group, Inc. is a leading provider of energy transportation services delivering crude oil and petroleum p ... roducts throughout the United States and the world. Founded in 1948, OSG has operated through multiple shipping cycles, adjusting our business as needed to compete and succeed. Our well-maintained fleet, and commitment to high quality, incident-free service, has positioned us as a preferred energy transportation provider to major oil companies, refiners and traders. read more