OpenCPN is a chartplotter and navigation tool. It’s designed to be used at the helm station of your boat while underway.
Chart a course and track your position right from your laptop.
This cross-platform ship-borne GUI navigation application is made up by a core program, a large set of plugins and freely available charts. The application is configurable with user icon. The software runs under Linux, Raspberry Pi, Android, macOS, and Windows.
This is free and open source software.
Key Features
- GPS/GPSD Position Input and Display.
- BSB Raster Chart display.
- S57 Vector ENC and CM93 chart display.
- AIS Input Decoding and Display.
- Waypoint Autopilot Navigation.
Plugin support includes weather, tactical, annotations and tidal data. Pilot charts can be downloaded from the project website. Other useful add-ons may be found inside the “Download” link at at the same site.
Website: opencpn.org
Support:
Developer: The OpenCPN Authors
License: GNU General Public License v2.0

OpenCPN is written in C and C++. Learn C with our recommended free books and free tutorials. Learn C++ with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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