A.must utilize magnetic courses
B.must take set and drift into account
C.should be replotted hourly
D.should be started each time the vessel's position is fixed
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A.ignores the effect of surface currents
B.is most useful when in sight of land
C.must be plotted using magnetic courses
D.may be started at an assumed position
A.north side of the mark
B.west side of the mark
C.east side of the mark
D.south side of the mark
A.left-side buoy
B.right-side buoy
C.a buoy of safety
D.a buoy of danger
A.anchorage area
B.fish net area
C.bifurcation
D.dredging area
A.white light FL (2) and a topmark of 2 black spheres
B.occulting green light and may be lettered
C.yellow light and will be numbered
D.continuous quick white light and may be numbered
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What area of the earth cannot be shown on a standard Mercator chart（）.
A celestial body will cross the prime vertical circle when the latitude is numerically （）.
In very high latitudes，the most practical chart projection is the（）.
When navigating a vessel，you（）.
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.
You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.
（） is a defined area within which ships must use particular caution and should follow the recommended direction of traffic flow.
Restricted areas at locks and dams are indicated by（）.
Traffic separation schemes adopted by the IMO are listed in（）.
Which buoy will NOT display white retro reflective material（）.