Magnetic Variation vs Deviation: What Every Navigator Must Know
A magnetic compass does not point to true north. Two separate errors, variation and deviation, pull the compass needle away from the dire...

Author / Contributor
Charles Hays is the Sales & Marketing Manager at American Nautical Services, where he has spent nearly 17 years helping captains and chief officers of 500 GT+ yachts keep their ECDIS systems and digital chart libraries current, secure, and Flag State inspection-ready. Certified in ECDIS and holding an MBA from Florida State University, he also oversees the companys ISO 9001 Quality Management System, giving him a front-row view of what inspectors look for and where vessels fall short. Through his work at American Nautical Services and his weekly newsletter Bridge Watch, Charles covers chart compliance, Flag State requirements, and the regulatory updates that matter most to working maritime professionals.
A magnetic compass does not point to true north. Two separate errors, variation and deviation, pull the compass needle away from the dire...
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I bought this book as a gift for someone who for years had had his own sailboat. He wrote to thank me for it, saying that the photos were fantastic and that he loved the book. The Black and White photography makes the photos stand out and the photos are understated and unique. Truly a wonderful book.
American National Services offered the best price on Murphy’s study guide books. They arrived quickly and in perfect condition. Can definitely recommend going through ANS. It’s worth it for your maritime career!
(Model Course 3.11) Safety Investigation into Marine Casualties and Incidents, 2014 Edition
Product arrived promptly and was current and in good condition… But the cost to ship seems excessive and more than the real cost to ship adding profit to the sale no doubt. If as they say this is a small business shipping labor is a part of the business and anything other than the cost of the actual UPS or USPS cost is an additional charge. They do have a lot of products and they do act promptly with as promised service and delivery.