虽然其中两艘沉船沉没了，但它们都是双层船体设计，这种双层船体被认为是“永不沉没的”，也许正是这个错误的想法导致了泰坦尼克号和不列颠号的悲剧结局。
While two of these ships sank, they were all designed with double hulls believed to make them "unsinkable", perhaps a mistaken idea that led to the Titanic's and the Britannic's tragic end.
主船体梁由上甲板，顶边舱，斜边舱和双层底组成。
The main hull girder to consist of upper deck, topside tanks, hopper tanks and double bottom.
船体线型采用优化设计的深v型，在风浪中航行性能极佳，同时采用双层底结构，可确保全船进水不沉。
In addition, the hull is double bottom construction, which ensures the boat inflated when the water entered the boat.
船体线型采用优化设计的深v型，在风浪中航行性能极佳，同时采用双层底结构，可确保全船进水不沉。
In addition, the hull is double bottom construction, which ensures the boat inflated when the water entered the boat.
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