A.unwanted interference
B.unexpected figures
C.abnormal data
D.unwanted information
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A.a plan-position indicator system
B.pulse-plan integration
C.pulse-pulse input
D.power-plan input
A.She must use this equipment to obtain early warning of risk of collision
B.The use of a radar excuses a vessel from the need of a look-out
C.The radar equipment is only required to be used in restricted visibility
D.The safe speed of such a vessel will likely be greater than that of vessels without radar
A.all fishing vessels over 39 feet in length
B.sail-propelled fishing vessels
C.all fishing vessels of less than 200 GT
D.wooden hull fishing vessels with a poor radar echo
A.Serrated range rings
B.Indirect echoes
C.Multiple echoes
D.Blind sector
A.in the way
B.the way
C.by the way
D.through the path
A.Watching the compass bearing of an approaching vessel
B.Systematic observation of objects detected by radar
C.Long-range radar scanning
D.All of the above
A.Increase the radar gain to pick up weak echoes through the rain
B.Increase the STC setting to reduce close-in spurious signals
C.Navigate as though the effective range of the radar has been reduced
D.Increase the range of the inner and outer guard rings
A.station the look-out in the wheelhouse to keep a continuous watch on the radar
B.secure the sounding of fog signals until a vessel closes within five miles
C.station a look-out as low down and far forward as possible
D.keep the radar on the shortest available range for early detection of approaching vessels
A.Echoes from a buoy
B.Own ship's marker
C.Echo from a ship on the same course at the same speed
D.Echo from a ship on a reciprocal course at the same speed
A.An acquired target entering into a guard zone
B.A tracked target lost for one radar scan
C.A tracked target entering your preset CPA-TCPA limits
D.A target being initially detected within a guard zone
最新試題
Your ARPA has been tracking a target and has generated the targets course and speed.The radar did not receive a target echo on its last two scans due to the weather.What should you expect under these circumstances().
Although manual plotting for CPA works well,the workload can become overwhelming when confronted with().
Radar reflectors are required for().
Which statement is TRUE concerning a vessel equipped with operational radar?().
The()has a built-in world map; most areas are displayed on a scale of 4000 nm from the top to the bottom of the screen,and can be zoomed in to 150 nm.
PPI is().
()is not a job of the radar antenna.
Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? ()
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().
What provides little or no indication that a vessel is dragging anchor? ()