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

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

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

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

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

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

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

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

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（）.

How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）