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

Which of the following shall not the officers in charge of the navigational watch do?（）

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

The helm command PORT TWENTY means（）.

The dew point temperature is（）.

（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.

Full details of all lights and fog signals are shown on（）.

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

The company should establish and maintain procedures to control all documents and date which are relevant to（）.

Fog is likely to occur when there is little difference between the dew point and the（）.