Assessment OICNW-1-1A

Adjust a sextant

Assessed in MT-4371 Sea Term IV: Marine Transportation


On a ship underway or in a laboratory with a clear horizon, given a standard marine sextant with a total index error of no more than 2'.

Performance Requirements

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

Remove the adjustable sextant errors

  1. The errors are removed in the following order:
    1. Perpendicularity;
    2. Side error;
    3. Parallelism
  2. The index error is less than 1.0 minutes of arc.

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

Adjust a sextant

Published: 2016-10-28-04:00