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
When a buoy marks a channel bifurcation，the preferred channel is NOT indicated by（）.
Which position includes the effects of wind and current（）.
The points on the earth’s surface where the magnetic dip is 90° are（）.
Which of the following are data layer categories to be displayed on ECDIS（）．
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
Restricted areas at locks and dams are indicated by（）.
When using a buoy as an aid to navigation which of the following should be considered?（）
The equator is（）.
（） is not likely to be a methods of Traffic Separation.
When navigating a vessel，you（）.