OpenCPN

OpenCPN is a free software (GPLv2) project to create a concise chart plotter and navigation software, for use underway or as a planning tool. OpenCPN is developed by a team of active sailors using real world conditions for program testing and refinement.

Features

• Worldwide, standard, S57 and encrypted S63 vector chart support.
• IHO S52 compliant display of S57 and S63 vector charts.
• BSB v3, and earlier, raster chart support.
• "BSB4" and "nv-chart" support through plugins.
• CM93 vector chart support, with per cell offset corrections.
• OpenGL support for enhanced performance on modern hardware.
• Single-chart and Quilted display modes.
• North-up, Course-up and Chart-up display modes.
• Moving-map display mode.
• Route navigation with ship tracking functions.
• Waypoint navigation.
• Dashboard, for configurable on-screen display of ship's NMEA data.
• NMEA 0183 GPS interface at selectable baud rate.
• Advance NMEA message handling structure, with built in multiplexer.
• Autopilot output support.
• AIS input with full target tracking and collision alerting.
• AIS support for SART with selectable MMSI for automatic MOB handling.
• AIS support for DSC and GPSGate Buddies.
• Anchor watch/alarm functions.
• GRIB file input and display for weather forecasting.
• GPX Waypoint, Track and Route input and output file support.
• Tide and Current prediction and display by location.
• Route planning with tidal support.
• Builtin great-circle routing.
• Integrated weather routing through qtVlm or separate plugin
• GPX Layers for annotation of charts.
• A selection of display themes.
• A growing number of plugins. Climatology, Weather Routing, WeatherFax, Google Earth, World Magnetic Variation, Voyage Data Recorder, AIS -radar, SAR and a LogBook, plus many more.
• Multi-language support. 20+ languages supported.