NVIC 12-14 Task 1.7.B

Plan and conduct a passage and determine position

OICNW-A1.07 Compass – magnetic and gyro

Ability to determine errors of the magnetic and gyro-compasses, using celestial and terrestrial means, and to allow for such errors

On a vessel, on a simulator, or in a navigation laboratory when given a magnetic and gyro-heading, the gyro error and a chart that provides local variation,

the candidate determines the magnetic compass error.

The candidate:

1. Compares the magnetic compass heading to the corrected gyro heading (corrected for a known gyro error);

2. Determines the magnetic compass error and properly labels it;

3. Determines the magnetic compass error to within ± 1.0° of the assessor’s solution; and

4. Correctly records it in the compass record book and the vessel’s log.