Tugs are available for assistance of berthing, unberthing, escorting and salvage operation withhorsepower from 624hp to 3400hp.

汕头港区备有624至3400匹马力的拖轮，协助船泊以及提供护和救助等服务。

In this paper,the techniques of hydrofoil truing over and maneuvering for berthing and unberthing are discussed, which aims to propose safer practical operations.

讨了水翼船的掉头、泊操作特征,旨在提高水翼船实际操作安全性。