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
Exxon Corp. v. Governor of Maryland available to the state, and no legitimate state interest apart from a desire for cheaper oil. This case is an exception to the rules set forth in "Pike v. Bruce Church, Inc.". Justice Blackmun, with the only vote in favor of Exxon, wrote the dissenting opinion for the court. Exxon Corp. v. Governor of Maryland Exxon Corp. v. Governor of Maryland, 437 U.S. 117 (1978), was a case in which the Supreme Court of the United States upheld a Maryland law prohibiting oil producers and refiners from operating service stations within its borders. The challengers, including Exxon, claimed that the