That's why ice breakers have the double hull.

这就是破冰船采用双层船体的原因。

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.

虽然这两艘船沉没了，但它们都被设计成双船体，据说这种设计能使它们“永不沉没”，也许是这个错误的想法导致泰坦尼克号和不列颠号的悲剧结局。