A.dead-reckoning position
B.running fix
C.estimated position
D.fix
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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
A.average wind conditions
B.tidal currents
C.magnetic variation
D.average limits of field ice
最新試題
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（）.
A person who sees someone fall overboard should（）.
The Lists of Meteorological Observation Stations can be found in（）.
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.
Light Lists for coastal waters are（）.
Mean high water is the average height of（）.
After being launched from a vessel，totally enclosed survival craft which have been afloat over a long period require（）.
Admiralty EasyTide（）.
An inflatable liferaft should be manually released from its cradle by（）.
The light vessel is reported（）.