A.radar scanning
B.radar plotting
C.compass bearings
D.All of the above
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A.the shore is bluff and rocky
B.of offshore exposed rocks
C.submerged reefs cause prominent breakers
D.the lookout tower is marked with radar reflectors
A.a few centimeters
B.a few fathoms
C.a few meters
D.a few feet
A.gain control
B.sensitivity time control
C.fast time constant
D.pulse length control
A.sensitivity time control (sea clutter control)
B.receiver gain control
C.brilliance control
D.fast time constant (differentiator)
A.sensitivity time control (sea-clutter control)
B.receiver gain control
C.brilliance control
D.fast time constant (differentiator)
最新試題
Which statement is TRUE concerning a vessel equipped with operational radar?（）.
You are scanning the radar screen for a buoy fitted with racon. How should this signal appear on the PPI display?（）
When hitting a solid object such as a ship or an airplane，the radar waves are reflected back （）they came.
Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? （）
Which general statement concerning radar is FALSE?（）.
What provides little or no indication that a vessel is dragging anchor? （）
When using the radar for navigating（）.
Your ARPA has automatic speed inputs from the log．Due to currents，the log is indicating a faster speed than the speed over the ground.What should you expect under these circumstances（）.
The development of（）led to the fully automatic ARPA systems installed on commercial ships.
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.