A.C
B.Cl
C.Co
D.c
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A.Surging
B.Spilling
C.Plunging
D.Converging
A.you should stay to the north or east of the buoy
B.you should stay to the west or south of the buoy
C.the buoy is a major lighted buoy
D.nothing special for navigational purposes
A.magnetic equator
B.magnetic longitude reference line
C.points where there is no variation
D.points where there is no annual change in variation
A.prevailing wind directions
B.prevailing ocean current directions
C.probable surface current flow
D.shortest great circle routes
A.conspicuous object
B.steep depression in the surrounding hills that resembles a cup
C.domed structure useful for navigation
D.calling-up-point used for traffic control
最新試題
What information is NOT found in the chart title? （）
What defines a great circle? （）
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
Which information does the outer ring of a compass rose on a nautical chart provide（）.
The soundings on the imperial chart are measured in（）.
Particular care is needed when navigating in the vicinity of（）as very few of these features have been fully surveyed to modern standards to determine their correct position，full extent，or the least depth over them.
The description Racon beside an illustration on a chart would mean a （）.
The path that a vessel is expected to follow，represented on a chart by a line drawn from the point of departure to the point of arrival，is the（）.
On a Mercator chart，1 nautical mile is equal to（）.
A chart with a scale of 1:80，000 would fall into the category of a（）.