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

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

What is it called when it is possible to ignite the vapour above the oil?（）

（）is on the panel of radar.

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

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

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

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

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

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