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

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

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

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

The ISM code is part of（）.

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

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

（）is on the panel of radar.

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

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