Magnetic North varies from True North in many parts of the world. This is largely due to the 'make-up' of the local geography. For example, high levels of granite can make for significant variation. Whatever the variation, this will change year-on-year. This change in variation is noted on the compass rose on your paper chart. Here, we talk you through how to calculate variation for any given year, using this information.
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The AuthorMark Burkes is a former Clipper Race Skipper, Round the World Crew, Clipper Training Skipper & jobbing RYA Yachtmaster Instructor (Ocean). He has over 200,000 miles logged.
Mark also writes professionally both online and offline and has written for Yachting World. Fierce Turtle is not linked to nor is it in any way accredited by the splendid folk at Clipper Ventures. All opinion is our own.
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