The helm command PORT TWENTY means（）.

A tide is called diurnal when（）.

The ISM code is part of（）.

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

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

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

According to the relevant regulation, lifeboat should be powered by（）.

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

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

The loading of the ship must be done in accordance with（）.