With NMEA 2000 support for autopilot capability, engine data, SiriusXM Weather and more, the GPSMAP 820 is compatible with LakeVu HD Ultra, BlueChart g2 and BlueChart g2 Vision. It also supports all Garmin marine radar.
For even more functionality, wirelessly connect to Apple (mobile digital device) for BlueChart Mobile. The chartplotter includes 2 SD data card slots, allowing for gigabytes of storage. It can be flat, flush or bail mounted.
The GPSMAP 820xs offers select networking capabilities that allow you to share features with other compatible GPSMAP units, such as radar, GCV 10 DownV
scanning sonar, supplemental maps, and user data, such as waypoints, routes and tracks.
Special Sailing Features
Supported sailing features include laylines, enhanced wind rose, heading and course-over-ground lines, and true wind data fields.
The 8 color GPSMAP 820 keyed chartplotter has a preloaded worldwide basemap. The built-in 10 Hz GPS/GLONASS receiver updates your position and heading 10 times per second.