A.It provides a graphic display to emphasize which vessel is on a collision course
B.In the true presentation，it provides a quick visual check to determine if a vessel has changed course
C.The display is one of the primary inputs and must be in use when using the trial maneuver capability
D.It provides a graphic display of a target vessel's relative course，speed，and CPA
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A.speed of the vessel over the ground or through the water
B.distance to the next port
C.time of the next navigational satellite pass
D.None of the above
A.radar scanning
B.radar plotting
C.compass bearings
D.All of the above
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
最新試題
You are using a radar in which your own ship is shown at the center，and the heading flash always points to 0°. If bearings are measured in relation to the flash，what type of bearings are produced? （）
You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.
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（）.
Which general statement concerning radar is FALSE?（）.
The development of（）led to the fully automatic ARPA systems installed on commercial ships.
You are underway at 5 knots and see on your radar a contact 10 miles directly astern of you. 12 minutes later，the contact is 8 miles directly astern of you. What is the estimated speed of the contact? （）
You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?（）.
When using the ARPA in heavy rain，which action should you take? （）
Which statement is TRUE concerning a vessel equipped with operational radar?（）.
Your ARPA has two guard zones.What is the purpose of the inner guard zone（）.