关键词: 管道挖沟动力定位工程船, 结构设计, 凹形首柱拖缆槽, 导缆圆尾, 振动分析

Abstract: The pipe trenching dynamic positioning engineering ship is a submarine operation ship that integrates the stem towing operation system, the stern towing operation system and many other underwater operation functions. In order to match the operation function, many large-scale operation equipment are structurally strengthened, and the concave stem towing notch and round stern fairlead are innovatively designed. It carries out calculation and analysis to optimize the cross section, check the longitudinal strength, and verify the local strength of the main equipment reinforcement structure. The hull vibration is also evaluated to take certain vibration reduction measures.

Key words: pipeline trenching dynamic positioning engineering ship, structural design, concave stem towing notch, round stern fairlead, vibration analysis