摘要
本文就对拖网渔船在自航和拖航两种工况下，对推进性能较高的导管螺旋桨设计时有关问题进行分析，提出为满足拖航工况时可适当增加桨的直径或采用两档速比齿轮箱以满足两种工况下的推进要求的观点，这对拖网渔船在两种工况下做到桨、机、船匹配是合适可行的。
This paper is presented that concerning problem of pipe propeller designing is analysed and designing method is discussed when trawl vessels need favorable propelling property,under two operating modes of self navigating and trawling navigating,then put forward that we may increase pipe propeller diameter or use two speed gear box to need for propelling.It is practicable for vessel, propeller and main machine to mate well.
