What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.

Mariners not entering the port are（）to keep at least one mile off.

After launching，an inflatable raft should be kept dry inside by（）.

On an Atlantic Ocean voyage from New York to Durban，South Africa，you should expect the Agulhas Current to present a strong（）.

Light Lists for coastal waters are（）.

Lines drawn through points on the Earth having the same atmospheric pressure are known as （）.

When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results（）.

Mean high water is the average height of（）.

The international number，location and/or name，geographical co-ordinates，characteristics and intensity，elevation in metres，range in sea miles and description of structure of a light can be found in（）.

An inflatable liferaft is hand-launched by（）.