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OpenCPN 4 8 0 screenshot.jpg
Developer(s) The OpenCPN Authors
Stable release
4.8.0[1] / August 11, 2017 (2017-08-11)
Written in C++
Operating system Cross-platform
Type Chart plotter and navigation
License GPL v2[2]

OpenCPN (Open Chart Plotter Navigator) is a free software 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.[3]

OpenCPN uses GPS input data to determine the ship's own position and data from an AIS receiver to plot the positions of ships in the neighborhood.


  1. ^ [1]
  2. ^ OpenCPN license
  3. ^ "OpenCPN About". Retrieved 25 October 2013.