OpenCPN is a free software project to create a concise chart plotter and navigation software for use as an underway or planning tool.
Current features:
* GPS/GPSD Postition Input * BSB Raster Chart Display * S57 Vector ENC Chart Display * C-MAP Vector Chart Display (CM93/2) * AIS Input Decoding * Waypoint / Autopilot Navigation * International Language Support * Cross-platform support * Grib Weather Overlay
You can download additional US nautical charts from NOAA at http://www.charts.noaa.gov/
If you have a GPS connected you will want to start the gpsd service. To do that run:
sudo dpkg-reconfigure gpsdand
sudo /etc/init.d/gpsd startBlueTooth GPS users should take special care to read up about the no-probe option. (for this reason we have not started gpsd automatically)