Teekay Tankers Ltd. engages in the provision of crude oil and refined petroleum products through the operation of its oil and product tankers. The firm's primary business is to own and operate crude oil and refined product. operates mid-sized tankers. In addition, to its core business, the Company also provide STS support services, along with its tanker commercial management operations. The firm owns a fleet of approximately 42 double-hull tankers, including 24 Supermax tankers,18 Aframax/LR2 tankers, and has six time chartered-in tankers. Its vessels are typically employed through a mix of spot tanker market trading and short- or medium-term fixed-rate time charter contracts. The firm also owns a crude carrier (VLCC) through a joint venture. The company owns a ship-to-ship transfer business that performs full-service lightering and lightering support operations in the United States, Gulf, and Caribbean.