A.a line connecting two charted objects
B.a line on some point of which the vessel may be presumed to be located
C.the position of your vessel
D.not used in a running fix
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A.longitude line
B.latitude line
C.line of position
D.fix
A.red
B.yellow
C.with red and white vertical stripes
D.with a distinct color and pattern unique to each buoy
A.dead reckoning
B.Pilotage
C.great circle sailing
D.geographic navigation
A.must utilize magnetic courses
B.must take set and drift into account
C.should be replotted hourly
D.should be started each time the vessel's position is fixed
A.ignores the effect of surface currents
B.is most useful when in sight of land
C.must be plotted using magnetic courses
D.may be started at an assumed position
最新試題
When entering a channel from seaward，the numbers on buoys（）.
Restricted areas at locks and dams are indicated by（）.
In very high latitudes，the most practical chart projection is the（）.
When a buoy marks a channel bifurcation，the preferred channel is NOT indicated by（）.
The recording fathometer produces a graphic record of the（）.
When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.
The points on the earth’s surface where the magnetic dip is 90° are（）.
When using a buoy as an aid to navigation which of the following should be considered?（）
Traffic separation schemes adopted by the IMO are listed in（）.
What is an ebb current（）.