Teekay Tankers currently has a fleet of 52 double-hull tankers (including 26 Suezmax tankers, 17 Aframax tankers and nine LR2 product tankers), and also has four time chartered-in tankers. Teekay Tankers' vessels are typically employed through a mix of short- or medium-term fixed-rate time charter contracts and spot tanker market trading. Teekay Tankers also owns a Very Large Crude Carrier (VLCC) through a 50 percent-owned joint venture. In addition, Teekay Tankers owns a ship-to-ship transfer business that performs full service lightering and lightering support operations in the U.S. Gulf and Caribbean. Teekay Tankers was formed in December 2007 by Teekay Corporation as part of its strategy to expand its conventional oil tanker business.