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 where the crew eat their meals.

（）is on the panel of radar.

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

Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）

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

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

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

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