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

A tide is called diurnal when（）.

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

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

The helm command PORT TWENTY means（）.

Where would you find information about the time of high tide at a specific location on a particular day of the year?（）

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

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?（）

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