Double-hulled tanker Double-hulled tanker A double-hulled tanker refers to an oil tanker which has a double hull. They reduce the likelihood of leaks occurring than in single-hulled tankers, and their ability to prevent or reduce oil spills led to double hulls being standardized for oil tankers and other types of ships including by the International Convention for the Prevention of Pollution from Ships or MARPOL Convention. After the Exxon Valdez oil spill disaster in Alaska in 1989, the US Government required all new oil tankers built for use between US ports to be equipped with a full double hull. A number of
History of the oil tanker engines, as opposed to the older steam engines. The "Vandal", the first diesel-electric ship, was capable of carrying 750 long tons of refined oil was powered by three diesel motors. The larger "Sarmat" employed four 180 h.p. engines. The first seagoing diesel-powered tanker, 4,500 ton "Mysl", was built by Nobel's competitors in Kolomna. Nobel responded with "Emanuel Nobel" and "Karl Hagelin", 4,600 long ton kerosene tankers with engines. The 475 ft., 7-masted schooner "Thomas W. Lawson", built in 1902, was the largest purely sail tanker ever built. It carried coal, and oil in barrels from Texas to the East Coast