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，助舶靠离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.

本文探翼的掉头、靠离泊操作特征,旨在提高翼实际操作安全性。