NVIC 12-14 Task 1.1.A

Plan and conduct a passage and determine position

OICNW-A1.01 Celestial navigation

Ability to use celestial bodies to determine the ship’s position

On a vessel or in a navigation laboratory, Given a standard marine sextant with the capability for a perpendicularity error, side error, parallelism error, and collimation error,

the candidate detects and corrects adjustable sextant errors in accordance with industry standards.

1. The candidate removes the adjustable sextant errors in the following order:

   a. Perpendicularity;

   b. Side error;

   c. Parallelism; and

   d. Collimation error.

2. The candidate’s remaining index error is less than 0.5 minutes of arc as determined by the assessor.