Navigation General · Compass Error
A gyrocompass error of 2° High (East) means the gyro reads:
- A2° less than true north
- B2° more than true north✓ Correct
- C2° more than the magnetic compass
- D2° less than the magnetic compass
Explanation
Gyro error 'High' means the gyrocompass reads too HIGH — more than the true course. A 2°H (East) gyro error means subtract 2° from the gyro reading to get true. (Gyro reads 2° more than true.)
Authority: Bowditch (Pub. 9)
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