This is particularly important for the catamaran which endures wave force acting on the side hull only by the single deck cross-structure, and is hard to guarantee.
尤其是只靠单层甲板连接桥来承受作用于两片体上波浪力的双体船，其连接桥强度更难于保证。
This ship is an aluminum alloy welded catamaran passenger vessel, using symmetrical semi-hull, single deck, upper lower cabins and propeller driven.
本船为铝合金焊接双体客船，采用对称片体，单层甲板，设上下客舱，螺旋桨推。
The boat is built of steel hull, aluminum - welded deckhouse, round bilge, transom stern, single continuous deck, longitudinal framing, four engines, four rudders and diesel engine driven.
本艇为钢质主船体，铝质焊接甲板室，圆舭方艉单层连续甲板纵骨架式四机四桨四舵柴油机推进巡逻艇。
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