Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.

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

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

According to the relevant regulation, lifeboat should be powered by（）.

Which of the following is not an operation mode of AIS?（）

The dew point temperature is（）.

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

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

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

In the Northern hemisphere northerly winds may cause temperature（）.