Overseas Shipholding Group, Inc. and its subsidiaries possess a fleet of ocean vessels that transport crude oil and other petroleum products for US flag trade. The company currently manages approximately 24 vessels, totaling around 1.7 million deadweight tons as of the end of 2021. They provide services to several clients, such as independent oil traders, refinery operators, and government entities, and were established in 1948, with headquarters located in Tampa, Florida.