A line of position derived by radar range from an identified point on a coast will be a(n) ______.
A.straight line
B.arc
C.parabola
D.line parallel to the coast
第1题:
You are running parallel to the coast and take a running fix using bearings of the same object.If you are making less speed than used for the running fix,in relation to the position indicated by the fix,you will be ______.
A.Closer to the coast
B.Farther from the coast
C.On the track line ahead of the fix
D.On the track line behind the fix
第2题:
keeping a close watch and lookout
taking a radar range and bearing
observing a radar target and listening to signals
keeping a well clear caution
第3题:
circle of equal altitude
parallel of declination
parallel of altitude
vertical circle
第4题:
straight line
arc
parabola
line parallel to the coast
第5题:
can use radar information from one object to fix the position
should never use radar bearings
should only use radar bearings when the range exceeds the distance to the horizon
must use information from targets forward of the beam
第6题:
on the prime vertical
a latitude line
a longitude line
of no special significance
第7题:
Sound one blast of the whistle
Alter course to starboard
Construct a radar plot
Sound the danger signal
第8题:
a line connecting two charted objects
a line on some point of which the vessel may be presumed to be located
the position of your vessel
not used in a running fix
第9题:
Closer to the coast
Farther from the coast
On the track line ahead of the fix
On the track line behind the fix
第10题:
Increasing radar range to a fixed object ahead
Drift lead with the line leading perpendicular to the centerline
Vibrations felt by placing a hand on the cable
Changing bearings to distant fixed objects abeam
第11题:
estimated position
assumed position
fix
running fix
第12题:
Straight line
Arc
Parabola
Hyperbola
第13题:
A vessel is approaching from dead ahead.Both of her sidelights are visible and her range lights are in line. Which of the following could you do first? ______.
A.Sound one blast of the whistle
B.Alter course to starboard
C.Construct a radar plot
D.Sound the danger signal
第14题:
monitoring signal
inverse signal
reverse signal
feedback signal
第15题:
The marine sextant
The chronometer
The echo sounder
The radar
第16题:
Compass rose
Cursor
Plan position indicator
Variable range marker
第17题:
The Morse code distress series S-O-S repeated 3 times followed by DE and the vessel's call sign
A line of blip code on a radar screen outward from the SART's position along its line of bearing
A line of blip code on a radar screen inward from the SART's position to its own ship along its line of bearing
None of these
第18题:
relative bearing
range line
track line
estimated position
第19题:
straight line
arc
parabola
hyperbola
第20题:
can usually be detected by radar in a smooth sea at a range of 4 to 6 kilometers
are indistinguishable from sea return on the PPI
are invisible to radar when covered with a thick layer of snow
are usually seen at night before they are close enough to provide a radar echo
第21题:
It transmits SOS and the vessel's name and position in slow speed Morse Code
It will appear on a radar unit's PPI as a line of dots radiating outward with the innermost dot indicating the SART's position
It will appear on a radar unit's PPI as a line of dots radiating outward with the outermost dot indicating the SART's position
None of the above
第22题:
running fix
fix
estimated position
assumed position
第23题:
Running fix
Fix
Dead-reckoning position
Estimated position