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
1989 Narragansett Bay oil spill planned, had not taken on a harbor pilot, and shortly before she ran aground, Captain Georgudis had sent both his first officer and watchman away from the bridge to work on other tasks, which the NTSB judged left the ship "without a qualified deck watch officer for several minutes prior to the grounding." 1989 Narragansett Bay oil spill On June 23, 1989, several hundred thousand gallons of fuel oil were spilled at the mouth of the Narragansett Bay in Rhode Island after the tanker MV "World Prodigy" ran aground on a reef near Aquidneck Island. "World Prodigy", a long ship