Calculating Variation

How to calculate variation using the information found on a Compass Rose of a chart.

Charts have the necessary information to calculate variation appropriate for their coverage area. They provide the local variation at a given date (year), and the amount and direction variation changes yearly on a Compass Rose.

We can calculate today's variation for that area on that chart using these two pieces of information.

• Calculating Variation
• File Type
• Categories Day Skipper Theory, Knowing where you are!
• Current Version
• Date Created 29th January 2022
• Last Updated 9th January 2025
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• File Size 100.25 KB
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