A World Magnetic Model reminder, courtesy Maretron
Is your boat’s World Magnetic Model up to date? Does it matter? It may be a sign of Miami new product overload (here and here) that I got intrigued with this subject yesterday, but it was actually a Maretron press release (pdf here) that led the way. The company is proud that their latest GPS200 now outputs magnetic compass variation based on the latest WMM2010, and that a firmware update will bring the same precision to their existing GPS receivers. Heck, I thought GPS units just got variation from the satellites, and was reminded how much we take compass technology for granted…