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9-53.
9-54.
9-55.
9-56.
9-57.
9-58.
9-59.
9-60.
Which of the following navigational
fixes is the least accurate?
1.
Visual bearing and radar range
2.
Two radar bearings on two
different objects
3.
Tangent radar bearings
4.
Two radar ranges on two
different objects
A navigational fix obtained by
radar tangent bearings and
compensated by half of the beam
width may be considered accurate.
1. True
2.
False
Which of the following objects
should NOT be used in obtaining a
navigational fix?
1. Buoys
2.
Small isolated rocks
3.
Islands
4.
Pilings
What type of system(s) is SINS?
1.
Satellite
2.
Inertial
3.
Radio wave
Which of the following craft would
use SINS to navigate?
1.
Rocket
2.
Ship
3. Airplane
4.
Each of the above
Which of the following is a
characteristic of SINS?
1.
Extremely accurate, global
system
2.
Global,all-weather system
3.
Global, all-weather satellite
system
4.
Accurate, all-weather, dead
reckoning system
What is the maximum range a radio
beacon is reliable?
1.
50 mi
2.
100 mi
3.
125 mi
4.
175 mi
When a radio beacon is greater than
25 miles, a correction is usually
applied to the bearing before
plotting.
1.
True
2.
False
9-61.
9-62.
9-63.
9-64.
9-65.
Which of the following is NOT a
celestial method of determining
gyro compass error?
1.
Sun line
2. Azimuth of Sun
3. Azimuth of Polaris
4. Amplitude of Sun
What type of time is used in
celestial observations?
1.
GMT
2.
LMT
3.
ZT
4.
LT
What information must you first
know to determine gyro compass
error?
1. Time of observation, Julian
date, DR position, and bearing
of Sun
2.
Time of observation, date, DR
position,
and azimuth
3.
Time of observation, Julian
date, DR position, and
declination
4. Time of observation, date, DR
position, and declination
When an azimuth of the Sun is shot,
the bearings are always in true
degrees.
1.
True
2.
False
When should an azimuth be taken?
1.
Early morning
2.
Mid-morning only
3.
Mid-afternoon only
4.
Mid-morning or mid-afternoon
9-66.
From what source should the watch
time be obtained prior to a
celestial observation?
1. AN/WRN-6 only
2.
Ship's chronometer only
3. Both 1 and 2 above
4.
Ship's clocks
9-67.
Which navigation instrument is used
to shoot an azimuth?
1.
Bearing circle only
2. Azimuth circle only
3. Alidade
4.
Bearing or azimuth circle
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