A.sharp turn in the channel
B.narrowing in the channel at that point
C.junction in the channel
D.obstruction that must be left to port
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A.should be passed close aboard on either side
B.indicates that special caution is required
C.is used at a channel bifurcation or junction
D.is painted with red and white vertical stripes
A.easterly courses in high latitudes
B.southerly courses in high latitudes
C.westerly courses in low latitudes
D.easterly courses in low latitudes that cross the equator
A.plane tangent at one point
B.cylinder tangent at the equator
C.cone tangent at one parallel
D.infinite series of cones tangent at selected parallels
A.True position
B.True meridian
C.True course
D.True bearing
A.Longitude
B.Latitude
C.Height
D.Bearing
最新試題
A vessel is（）when she is not at anchor，made fast to the shore，or aground.
Except for N-S courses，and E-W courses on the equator，a great circle track between two points，when compared to a rhumb line track between the same two points，will（）.
Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic? （）
A nun buoy will（）.
An orange and white buoy with a rectangle on it displays（）.
An orange and white buoy marking a danger area will have what symbol on it?（）
A special purpose buoy shall be（）.
Branford reef is（）.
A white buoy with a blue band is（）.
An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol? （）