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

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

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

Manoeuvring information can not be obtained from（）.

（）is on the panel of radar.

It is dangerous for vessels without the operational radar（）the estuary.

Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）

ECDIS must be able to perform all of the following EXCEPT（）.

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

（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.