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

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

Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.

The helm command PORT TWENTY means（）.

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

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

Manoeuvring information can not be obtained from（）.

Which of the following is not an operation mode of AIS?（）

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

Full details of all lights and fog signals are shown on（）.