Tsakos Energy Navigation Limited (TEN) is a global entity focused on the seaborne carriage of crude oil and refined petroleum products. The company offers its marine transport solutions to a diverse clientele, including national, major, and independent oil corporations, as well as refineries, under a spectrum of charter agreements ranging from short-term to extended durations. As of April 21, 2022, TEN operated a fleet of 66 double-hulled vessels, which specifically included 60 conventional tankers, three liquefied natural gas (LNG) carriers, and three specialized Suezmax DP2 shuttle tankers. Established in 1993, the firm was originally known as MIF Limited before adopting its current name, Tsakos Energy Navigation Limited, in July 2001. Its headquarters are located in Athens, Greece.