Assessment OICNW-1-1D

Measure the altitude of the sun at meridian passage (local apparent noon)

Assessed in MT-4371 Sea Term IV: Marine Transportation

Condition

Aboard a ship at sea, given a standard marine sextant, a clear horizon, a clear or partly cloudy sky.

Performance Requirements

Behavior	Standard
The student will:	During assessment, the student shall, at a minimum:
Measure the altitude of the sun as it transits the meridian on which the vessel is located.	The altitude is within ±0.5 minutes of arc, after correction for index error, as compared with the altitude computed by the assessor, or within ±1.0 minutes of arc, after correction for index error, as measured by the assessor at meridian passage.

Supports Table A-II/1 officer in charge of a navigation watch

Competence	Knowledge, Understanding & Proficiency	Task
Plan and conduct a passage and determine position	A1.01 Celestial Navigation Ability to use celestial bodies to determine the ship’s position	Measure the altitude of the sun at meridian passage (local apparent noon)

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