When steering by autopilot,how often should the steering be checked?（）

A tide is called diurnal when（）.

Shipboard Emergency Drills must be carried out at least（）on board cargo ship.

Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.

Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.

The dew point temperature is（）.

Berthing means bringing a vessel to her berth until（）.

How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）

The mean draft of a ship is the draft（）.

The ISM code is part of（）.