12 Largest Oil Tanker Companies in the World

11. Overseas Shipholding Group (NYSE: OSG)

Revenue: $355.5 million

Market Cap: $192.53 million

Assets: $1.23 billion

Number of employees: 713

Headquarters: 

Overseas Shipholding Group offers transportation services for crude oil and refined petroleum products. The fleet of the shipping company includes vessels registered in the United States and a number of other countries. OSG owns approximately 110 vessels with a capacity of 11 million deadweight tons (DWT) each. The company also transports natural gas products.