A.Safe water mark
B.Isolated danger mark
C.Preferred channel mark
D.Daymark of no lateral significance
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A.The objects lie in a straight line
B.The vessel is inside of a triangle formed by the objects
C.The vessel is outside of a triangle formed by the objects
D.A circle will pass through your position and the three objects
A.Can always rely on a buoy to be on station
B.Can always rely on a buoy to show proper light characteristics
C.Should assume a wreck buoy is directly over the wreck
D.Should never rely on a floating aid to maintain its exact position
A.Fathoms and meters
B.Miles and kilometers
C.Arc and degrees
D.Degrees and minutes
A.A current at minimum flow
B.A current coming in
C.A current going out
D.A current at maximum flow
A.A spherical topmark
B.Red and white retroreflective material
C.A sequential number
D.A red and white octagon
最新試題
You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.
When latitude and longitude are used，these shall be expressed in（）（and decimals of a minute if necessary），north or south of the Equator and east or west of Greenwich.
The four standard light colors used for lighted aids to navigation are red，green，white，and （）.
When navigating a vessel，you（）.
The equator is（）.
Traffic separation schemes adopted by the IMO are listed in（）.
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 points on the earth’s surface where the magnetic dip is 90° are（）.
Restricted areas at locks and dams are indicated by（）.