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

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

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

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

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 helm command PORT TWENTY means（）.

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

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

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

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