Chart Navigation & Plotting · Compass Error — Naming
If the compass reading is greater than the true value, the compass error is named:
- AEast
- BWest✓ Correct
- CVariable
- DZero
Explanation
By the rule 'compass best, error west; compass least, error east,' when the compass reads higher (best) than true, the error is westerly and is subtracted from the compass reading to get true.
Authority: Bowditch (Pub. No. 9)
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