A.fix
B.running fix
C.estimated position
D.dead-reckoning position
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A.estimated position
B.dead reckoning position
C.fix
D.None of the above
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
最新試題
Mean high water is the average height of（）.
A person who sees someone fall overboard should（）.
On an Atlantic Ocean voyage from New York to Durban，South Africa，you should expect the Agulhas Current to present a strong（）.
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.
The latest known details of lights are given in（）.
An inflatable liferaft should be manually released from its cradle by（）.
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（）.
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
The Lists of Meteorological Observation Stations can be found in（）.
Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.