The helm command PORT TWENTY means（）.

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

The loading of the ship must be done in accordance with（）.

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

Bales close to the deckhead should be covered to prevent（）.

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（）.

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（）.

The ISM code is part of（）.

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