（）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（）.

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

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

Shipboard Emergency Drills must be carried out at least（）on board cargo ship.

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

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

The helm command PORT TWENTY means（）.

The loading of the ship must be done in accordance with（）.

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