A.fix
B.dead-reckoning position
C.running fix
D.probable position
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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
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
最新試題
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（）.
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（）.
An orange flag showing a black circle and square is a（）.
Mariners not entering the port are（）to keep at least one mile off.
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.
After jacking down your liftboat you have an unexpected list.You find that the only cause of this list must be a flooded leg.Your next course of action should be to（）.
The information on（）is not likely found in The Mariners Handbook.
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.
For details of these and other lights the larger scale charts and Admiralty Lists should be （）.
Lines drawn through points on the Earth having the same atmospheric pressure are known as （）.