A.the light-house
B.the anchorage
C.the pilot station
D.the light-buoy
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A.deep laded vessels
B.deeply load vessels
C.deep loading vessels
D.deeply loaded vessels
A.small circle
B.great circle
C.rhumb line
D.hyperbola
A.untrue
B.impossible
C.suspectful
D.unimportant
A.date of construction or establishment
B.length of time between flashes of the light
C.time required for the longest flash of each cycle
D.time required for the light to complete each cycle
A.under existing visibility conditions
B.under perfect visibility
C.with ten miles visibility
D.with fifteen miles visibility
最新試題
When navigating a vessel，you（）.
On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.
You should plot your dead reckoning position（）.
When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.
Which statement concerning current is TRUE（）.
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.
In very high latitudes，the most practical chart projection is the（）.
You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.
When entering a channel from seaward，the numbers on buoys（）.
When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.