A.plane tangent at one point
B.cylinder tangent at one parallel
C.cone tangent at one parallel
D.series of cones tangent at selected parallels
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A.when at anchor
B.only when making way
C.at any time when underway
D.only when the identifying lights are not being shown
A.aground
B.at anchor
C.not under command
D.being towed
A.average wind conditions
B.tidal currents
C.magnetic variation
D.average limits of field ice
A.B flammable liquid
B.C flammable liquid
C.D combustible liquid
D.E combustible liquid
A.should always be immediately corrected
B.will always cause a vessel to capsize
C.always results from off-center weights
D.All of the above are correct
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Admiralty EasyTide（）.
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
The information on（）is not likely found in The Mariners Handbook.
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.
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（）.
Of the following，（）is not likely found in The Mariners Handbook.
An inflatable liferaft should be manually released from its cradle by（）.
Lines drawn through points on the Earth having the same atmospheric pressure are known as （）.
An inflatable liferaft is hand-launched by（）.