Tsakos Energy Navigation Limited operates in the Deep sea foreign trans. of freight sector. Tsakos Energy Navigation Limited is a provider of international seaborne crude oil and petroleum product transportation services. As of March 31, 2011, the Company operated a fleet of 47 modern crude oil carriers and petroleum product tankers that provide world-wide marine transportation services for national and other independent oil companies and refiners under long, medium and short-term charters. Its fleet also includes one 2007-built liquefied natural gas (LNG) carrier. In addition to the vessels operating in its fleet as of March 31, 2011, the Company was building two additional suezmax tankers. As of March 31, 2011, the Company had 21 operating vessels were of ice-class specification. The fleet totals approximately 4.9 million deadweight tons, all of which is double-hulled. On March 23, 2011, the Company delivered the aframax tanker Opal Queen to its buyers. In our complete report available for purchase the company is compared to: Tbs International Plc, Golden Ocean Group Limited and Ship Finance International Ltd.