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- Apprentice Mate Steersman (Great Lakes and Inland (Any Appropriate Tonnage)) »
- Q420 - Navigation General: Great Lakes and Inland
83. Which of the following describes the principal purpose of magnetic compass adjustment?
Compass adjustment minimizes deviation, the error caused by a vessel's magnetism. Deviation is the angular difference between the ship's magnetic heading and the magnetic meridian, and adjustment corrects this error through the use of correctors.
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