Actually Magellan was one of the first company into marine plotters. We launched the FX series in 2003 and it was feature rich and very well received at the time. But it quickly became clear that if we wanted to play and survive in the marine business, we would have to build out an entire line of marine products that offered inter-connectivity beyond what NMEA0183 would provide. Our parent company (Thales -French multinational) said no dice, so sadly we wound it down and focused on devices that would be stand-alone. I still have two of the FX324 color units, and I'd mounted another on my old First 235!
The units used special version of Navionics Gold charting that we called 'BlueNav'. All other Magellan (land and air) units used Magellan-generated cartography, and some power-that-was wanted the marine units to look the same. Mostly because Garmin was generating their own marine charts, and we did not want to seem inferior by using someone elses charting. In the long run that was a huge PITA and a disservice to consumers once we stopped generating those map files.
