GP39 GPS/WAAS Navigator with 4.2" Color LCD. Furuno's GP39 GPS Navigator provides accurate and reliable position fixing, thanks to a 12-channel GPS receiver combined with integrated SBAS (WAAS/EGNOS/MSAS) technology. The GP39 has various display modes, including Plotter, Highway, Steering, NAV data and Satellite monitor, as well as 2 user-customizable display modes, allowing you to select which data you want displayed on its 4.2" color LCD. Up to 3,000 points of ship track, 10,000 waypoints and