（）is on the panel of radar.

The helm command PORT TWENTY means（）.

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

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

Where would you find information about the time of high tide at a specific location on a particular day of the year?（）

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

The circulation around a low pressure center in the Northern Hemisphere is（）.

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

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

（）is where the crew eat their meals.