A.prevailing wind directions
B.prevailing ocean current directions
C.probable surface current flow
D.shortest great circle routes
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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
A.published with
B.combined with
C.in connection with
D.subject to
A.with
B.from
C.on
D.by
A.found in the center(s) of the compass rose(s)
B.indicated by isogonic lines
C.found in a note on the chart
D.All of the above
A.red triangle with the letter R
B.white triangle with the letters RG
C.green square with the letter G
D.white square with the letters GR
最新試題
The revision date of a chart is printed on which area of the chart? （）
The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．
On a Mercator chart，1 nautical mile is equal to（）.
The soundings on the chart are based on the depth of water available at （）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
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（）.
Which aid is NOT marked on a chart with a magenta circle? （）
The numeral in the center of a wind rose circle on a pilot chart indicates the （）.
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
The description Racon beside an illustration on a chart would mean a （）.