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

The mean draft of a ship is the draft（）.

（）is where the crew eat their meals.

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

The helm command PORT TWENTY means（）.

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

ECDIS must be able to perform all of the following EXCEPT（）.

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

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

The dew point temperature is（）.