基本布置形式 meaning in English

basic layout types

Thirdly , the basic configuration plan of a ship undocking assisted by different number of tugs is given . the relationships among the gyroidal moment , gyroidal time and drag forces of tugs in the process of ship undocking are analyzed . the margin of the tugs " towing forces during the ship undocking and turning process is studied
三、制定了不同数量拖轮协助船舶出坞时的基本布置形式，给出了不同拖轮协助船舶出坞时的拖轮布置示意图，并试验分析了船舶出坞回转力矩与回转时间和拖轮拖力之间关系，并确定了用于船舶出坞回转的拖轮拖力的余度大小。