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

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

When the wave period and the apparent rolling period are the same（）.

Before any loading takes place any signs of the previous cargo should do（）.

（）is where the crew eat their meals.

The dew point temperature is（）.

It is dangerous for vessels without the operational radar（）the estuary.

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?（）

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