A.Group flashing
B.Composite group flashing
C.Interrupted quick flashing
D.Fixed and flashing
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A.Red buoy with a horizontal yellow band
B.Red and white vertically-striped buoy with a vertical yellow stripe
C.Red and white vertically-striped buoy with a red spherical topmark
D.Green buoy with a yellow square
A.Dead-reckoning position
B.Estimated position
C.Fix
D.Running fix
A.encountered
B.met
C.contacted
D.seen
A.the differing light colors
B.one system having odd numbers while the other system has even numbers
C.one system using horizontal bands while the other system uses vertical stripes
D.the difference in the periods of the light
A.the light-house
B.the anchorage
C.the pilot station
D.the light-buoy
最新試題
On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.
When using horizontal sextant angles of three objects to fix your position，an indeterminate position will result in which situation（）.
The recording fathometer produces a graphic record of the（）.
How would you pass a red buoy in the maritime buoyage system“A” （）.
Traffic separation schemes adopted by the IMO are listed in（）.
Restricted areas at locks and dams are indicated by（）.
When navigating a vessel，you（）.
The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as the（）.
What is a lighted safe water mark fitted with to aid in its identification（）.
What is an ebb current（）.