A.estimated position
B.dead reckoning position
C.fix
D.None of the above
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A.dead-reckoning position
B.running fix
C.estimated position
D.fix
A.fix
B.dead-reckoning position
C.running fix
D.probable position
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
最新試題
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.
Many of the lights on this coast are placed so high as to be frequently obscured by（）.
The light vessel is reported（）.
For details of these and other lights the larger scale charts and Admiralty Lists should be （）.
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.
The latest known details of lights are given in（）.
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.
Mean high water is the average height of（）.
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（）.