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
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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
A.interrupted quick flashing
B.composite group flashing
C.Morse (A)
D.quick flashing
最新試題
What is an ebb current（）.
When navigating a vessel，you（）.
The recording fathometer produces a graphic record of the（）.
You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.
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.
What area of the earth cannot be shown on a standard Mercator chart（）.
When a buoy marks a channel bifurcation，the preferred channel is NOT indicated by（）.
When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.
A celestial body will cross the prime vertical circle when the latitude is numerically （）.
What is a lighted safe water mark fitted with to aid in its identification（）.