Manoeuvring information can not be obtained from（）.

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

Berthing means bringing a vessel to her berth until（）.

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

（）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.

A tide is called diurnal when（）.

（）is where the crew eat their meals.

The company should establish and maintain procedures to control all documents and date which are relevant to（）.

When the wave period and the apparent rolling period are the same（）.