OpenCPN icon
OpenCPN icon

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 screenshot 1

Cost / License

  • Free
  • Open Source

Application type

Platforms

  • Mac
  • Windows
  • Linux
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Features

  1.  Dark Mode
  2.  Ad-free
  3.  Works Offline
  4.  Route Planning
  5.  GPS Navigation
  6.  Sailing

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What is 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.