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
A celestial body will cross the prime vertical circle when the latitude is numerically （）.
On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.
You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.
Which buoy will NOT display white retro reflective material（）.
（） is a circular traffic lane used at junctions of several routes，within which traffic moves counterclockwise around a separation point or zone.
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
What is a lighted safe water mark fitted with to aid in its identification（）.
Depiction of TSS's on charts uses（）as the primary color.
When a buoy marks a channel bifurcation，the preferred channel is NOT indicated by（）.
The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as the（）.