OICNW Task 1.7.B

Determine magnetic compass error

MMA Method

In order to satisfy NVIC 12-14 Task 1.7.B , MMA students must:

NVIC Method

See NVIC method.

STCW Competence Knowledge, Understanding, and Proficiency

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
Condition Behavior Standard

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.