OpenCPN / OpenCPN Star 1.3k Code Issues Pull requests Discussions A concise ChartPlotter/Navigator. A cross-platform ship-borne GUI application supporting * GPS/GPDS Postition Input * BSB Raster Chart Display * S57 Vector ENChart Display * AIS Input Decoding * Waypoint Autopilot Navigation weather charts navigation gps autopilot grib boating sailing nautical nmea marine ais grib2 nautical-charts signalk nmea2000 ecdis nmea0183 chartplotter gshhs Updated Dec 21, 2025 C
bareboat-necessities / my-bareboat Star 224 Code Issues Pull requests Opensource hardware and software solutions for sailing and sailboats charts navigation gps pi sdr raspberry boat cockpit sailing nmea marine ais signalk opencpn victron chartplotter bareboat openplotter pypilot Updated Jul 15, 2025 C
nohal / imgkap Star 22 Code Issues Pull requests Tool to create and convert BSB / KAP charts navigation image-processing boating sailing marine chartplotter Updated May 5, 2019 C
rgleason / celestial_navigation_pi Star 11 Code Issues Pull requests Discussions celestial navigation plugin for opencpn navigation sailing marine celestial-navigation celestial navigation-component chartplotter Updated Dec 20, 2025 C