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The Coulombi Egg Tanker is a design that is aimed at reducing oil spills. It was approved by IMO as an alternative to the double hull concept. The United States Coast Guard does not allow this design to enter US waters, effectively preventing it from being built 〔Oversight of the U.S. role in the international maritime organization, Subcommittee on Coast Guard and Maritime Transportation, U.S. House of Representatives , June 25, 1998, http://commdocs.house.gov/committees/Trans/hpw105-74.000/hpw105-74_1.HTM〕 . == Concept == The design is an enhanced Mid-Deck Tanker and consists of a series of centre and wing tanks that are divided by horizontal bulkheads. The upper wing tanks form ballast tanks and act as emergency receiver tanks for cargo should the lower tanks be fractured. The lower tanks are connected to these ballast tanks by non-return valves. When a lower tank is damaged, the incoming sea water pushes the oil in the damaged tank up into the ballast tank. Because of the hydrostatic pressure, there is an automatic transfer out of the damaged tank. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Coulombi Egg Tanker」の詳細全文を読む スポンサード リンク
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