OICNW Task 1.7.A

Determine the gyro-compass error by bearing of range

MMA Method

In order to satisfy NVIC 12-14 Task 1.7.A , 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 underway or on a simulator, using navigational or natural terrestrial ranges,

the candidate takes a visual bearing of the range and determines gyro-compass error.


The candidate:

  1. Compares the visual bearing to the charted bearing;

  2. Determines the gyro-compass error and properly labels it; and

  3. Determines the gyro-compass error to within ± 1.0° of the assessor’s solution.