Navigation General · Variation
Variation is printed on a nautical chart in which location?
- AIn the title block, upper right corner
- BOn the compass rose, both the outer (true) and inner (magnetic) rings✓ Correct
- COnly in the chart notes near a port
- DAdjacent to each depth sounding
Explanation
The nautical chart compass rose shows variation in the center. The outer ring is oriented to true north; the inner ring is oriented to magnetic north. The angular offset between them is the local variation.
Authority: Bowditch (Pub. 9)
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