Article · Wikipedia archive · Last revised May 31, 2026

OpenCPN

OpenCPN is a free software maritime chart plotter and navigation software for use underway or as a planning tool. Developed by a team of active sailors and tested in real world conditions, it has multiple supported chart formats and a variety of data inputs.

Last revised
May 31, 2026
Read time
≈ 1 min
Length
161 w
Citations
6
Source
OpenCPN
DeveloperThe OpenCPN Authors
Stable release
5.12.2 1 / August 2, 2025 (2025-08-02)
Written inC, C++
Operating systemCross-platform
TypeChart plotter and navigation
LicenseGPL v22
Websiteopencpn.org
Repositorygithub.com/OpenCPN/OpenCPN

OpenCPN (Open Chart Plotter Navigator) is a free software maritime chart plotter and navigation software for use underway or as a planning tool. Developed by a team of active sailors and tested in real world conditions, it has multiple supported chart formats and a variety of data inputs.34

By using satellite navigation and other NMEA 0183 data feeds, OpenCPN determines a ship's own position and status from sensors such as AIS receivers to automatically plot and track the positions of ships in the neighborhood.5

In 2017 Norwegian ENC charts were available for OpenCPN.6

References

References

  1. "OpenCPN Download Directory". opencpn.org.
  2. "OpenCPN/OpenCPN". GitHub.
  3. "OpenCPN About". Retrieved 22 April 2018.
  4. Monthly, Yachting (2022-02-01). "Free digital nautical charts: are they any good?". Yachting Monthly. Retrieved 2022-09-13.
  5. A, Damián (2020-07-22). "OpenCPN, a navigation application for Ubuntu". Ubunlog. Retrieved 2022-09-13.
  6. "Norwegian ENC Data in OpenCPN". 2017-09-11.
See also

See also