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

（）is on the panel of radar.

（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.

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（）.

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

Before any loading takes place any signs of the previous cargo should do（）.

The ISM code is part of（）.

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

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（）.