The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.

Which of the following shall not the officers in charge of the navigational watch do?（）

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

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

The ISM code is part of（）.

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

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

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

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

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