pilotage
n. 领航;领航费;领港费;引航;引航费;驾驶术
例句
How many tugs assist pilotage?
几艘拖船协助引航?
Pilotage is not compulsory.
引航是非强制的。
No, I do not require pilot-i am the holder of Pilotage Exemption Certificate.
不,我船不要引航员,我持有引航豁免证书。