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A major component of tanker architecture is the design of the hull or outer structure. A tanker with a single outer shell between the product and the ocean is said to be single-hulled. [4] Most newer tankers are double-hulled, with an extra space between the hull and the storage tanks. [4]
Plan of a double-hulled tanker. A double-hulled tanker refers to an oil tanker which has a double hull.They reduce the likelihood of leaks occurring compared to 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 ...
Single hull, Double bottom, and Double hull ship cross sections. Green lines are watertight; black structure is not watertight. A double hull is a ship hull design and construction method where the bottom and sides of the ship have two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is some distance inboard ...
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The Alaska-class oil tanker is a class of VLCC tankers built by National Steel and Shipbuilding Company, San Diego. The tankers are double-hulled as mandated by the Oil Pollution Act of 1990, and will replace the existing fleet used by BP in the Alaskan area.
A tanker (or tank ship or tankship) is a ship designed to transport or store liquids or gases in bulk. Major types of tankship include the oil tanker (or petroleum tanker), the chemical tanker, cargo ships, and a gas carrier. Tankers also carry commodities such as vegetable oils, molasses and wine.
The Tide class are a 200.9 m (659 ft 1 in), 39,000 t [10] derivative of BMT Defence Services' AEGIR-26 design, [11] whose origins lie in a civilian tanker from Skipskonsulent of Norway. [12] They are double-hulled to reduce or prevent oil being lost by damage to the outer hull, in line with the MARPOL regulations for civilian tankers (from ...
However, in high energy collisions both hulls are penetrated. As the tanks of a double hull tanker are larger than those of MARPOL tankers and pre-MARPOL tankers and the height of the cargo above the water line is higher, the resulting spill can be much larger than these single hull designs. In the Coulombi egg design spillage is greatly ...