Errors of the azimuth (FINALS)

Question 1

A true north-seeking gyroscope

Answer 1

Gyrocompasses

Question 2

The gyro has three axes:

Answer 2

spin axis– torque axis– precession axis

Question 3

Gyrocompass Advantages

Answer 3

Advantages:* Seeks geographic (true)north instead of magnetic.* Can be used near the earth’s magnetic poles, where magnetic compass is useless.* Unaffected by surrounding metals.* Signal can be fed to other systems (weapons, nav)

Question 4

Gyrocompass Disadvantages

Answer 4

• Intricate electronic instrument.* Requires a constant source of electrical power and is sensitive to power fluctuations.* Requires periodic maintenance by qualified technicians

Question 5

The heading indicated by the magnetic compass toward where the ship is traveling.

Answer 5

Compass course

Question 6

The Sum of Variation and Deviation

Answer 6

Compass Error (CE)

Question 7

The Course That the Ship Is Steering,Using the Ship’s Magnetic Compass

Answer 7

Compass Heading

Question 8

This Heading Includes the Compass Error

Answer 8

Compass Heading

Question 9

Direction referenced to True North, measured clockwise from 000° to 359°

Answer 9

True North

Question 10

The Difference between True North and the GyroCompass Reading

Answer 10

Gyro Error (East or West)

Question 11

The Difference between the Gyro Compass and Gyro Repeater

Answer 11

Gyro Repeater Error

Question 12

is a very accurate instrument, it normally has a small error associated with its readings.(normally less than 1o)

Answer 12

gyrocompass

Question 13

Like the magnetic compass, this error is expressed as

Answer 13

east or west.

Question 14

bearings measured with reference to the ship’s longitudinal axis

Answer 14

Relative Bearings (R)

Question 15

bearings measured with respect to magnetic north

Answer 15

Magnetic Bearings (M)

Question 16

bearings measured with respect to true of geographic north.

Answer 16

True Bearings (T)

Question 17

Basic principles of hyperbolic terrestrial navigation systems

Answer 17

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