OpenCPN is a concise chart plotter and navigational software. It features worldwide, standard, S57 and encrypted S63 vector chart support. You can use GPX Waypoint, Track and Route input/output file types with this program. You can use plugins such as Climatology, Weather Routing, WeatherFax, Google Earth, World Magnetic Variation, Voyage Data Recorder, AIS -radar, SAR and a LogBook, etc. to bring additional features.