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

The helm command PORT TWENTY means（）.

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

The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.

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

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

What is a CORRECT reply to a pilot’s request, How’s your heading?（）

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

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

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