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

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

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

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

A tide is called diurnal when（）.

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

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

The dew point temperature is（）.

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

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