press button for 3 seconds to start compass calibration and auto stop after finished. | Boatman Factory | Facebook

Here’s a video on Calculating a Compass Error - let us know what you think! #lifeatsea #marineinsight #sea #ship #seafarer #maritime #seaman #sailor #sailing Video by @rachelmayatsea Checkout Our eBooks For Deck Department =>> https://buff.ly/2FtnE1g Send us your "Life At Sea" pics along with some details at photos@marineinsight.com Note: Respect the Photographer. This photograph is only for sharing purpose and not for any commercial use. We take great care in ensuring that all credits are given