How To Swing Your Compass
Here’s a great primer from Ritchie about how to adjust your compass for deviation and compensation: As any new boat owner soon learns, the sport has a lingo all its own. But even old salts often have a hard time grasping the magnetic compass dialect. Ritchie Navigation explains two unusual but easily understood terms that are vitally important to the accuracy of a compass: Deviation and Compensation. Compass needles or dials react to the earth’s magnetic field and point true north. The trouble is, certain electrical equipment or metal items on the boat—and even local magnetic fields—can interfere with the…