MMA Assessment OICNW-1-1B

Measure the altitude of the sun

Condition

Aboard a ship at sea, given a standard marine sextant, a clear horizon, a visible sun, and an accurate time.

Performance requirement

Behavior Standard
The student will: During assessment, the student shall, at a minimum:

Measure the altitude of the lower limb of the sun and accurately record the time of the observation.
  1. The altitude is within ±1.0 minutes of arc, after correction for index error, as compared with the altitude measured by the assessor at the same time; and,
  2. The time is within ± 1 second of UTC at the time of observation as determined by the assessor.

Location

Assessed in MT‑4371 Sea Term IV: Marine Transportation.

References

  1. Table A-II/1 OICNW-A1.01
  2. NVIC 12-14 Task 1.1.A