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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A.interrupted quick flashing
B.composite group flashing
C.Morse (A)
D.quick flashing
A.with part of it extending above the water
B.that can be detected by water turbulence
C.that drops off sharply
D.perpendicular to the current
A.Great Circle
B.Position Line
C.Rhumb line
D.True Bearing
A.dead reckoning
B.dead weight
C.dead slow ahead
D.dead slow astern
A.difference between the true course and the compass course
B.momentum of a vessel after her engines have been stopped
C.lateral movement of a vessel downwind of her intended course
D.displacement of a vessel multiplied by her speed
最新試題
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（）.
When using a buoy as an aid to navigation which of the following should be considered?（）
When making landfall at night，you can determine if a light is a major light or an offshore buoy by（）.
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.
How would you pass a red buoy in the maritime buoyage system“A” （）.
What is an ebb current（）.
Which buoy will NOT display white retro reflective material（）.
Which position includes the effects of wind and current（）.