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Cargo- and ballast tank with dividing wall and with surrounding ballast tanks for liquid cargo carrying ships
Cargo- and ballast tank with dividing wall and with surrounding ballast tanks for liquid cargo carrying ships
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机译:带有分隔壁的货舱和压载舱,以及用于液体货物运输船的周围压载舱
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摘要
The invention provides a cargo vessel comprising a plurality of tanks separated by bulkheads. A rigid partition, which extends across each of the tanks, is displaceable between raised and towered positions. A deformable membrane extends between the periphery of each partition and the walls of the respective tank to separate a space above the partition from a space below the partition in a liquid-tight manner. The space above the partition acts as a cargo space when the partition is in the lowered position and the space below the partition acts as a ballast space when the partition is in the raised position. A common space is therefore used for carrying ballast and cargo at different times without there being a risk of intermingling of cargo and ballast. In accordance with the invention, each of the cargo tanks is surrounded by a plurality of smaller, ballast tanks forming the walls thereof to which the membrane is attached. The ballast tanks may be used to strengthen the bulkheads, provide smooth walls for the main tanks and allow the ballasting of the ship to be conveniently adjusted.
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