I have been thinking of doing the great loop next year (yet another reason I went from sail to motor). I have OpenCPN and all the NOAA charts for the US, but I found that the charts for the inland portion of the loop, from Chicago to Mobile are not covered by NOAA. I will be buying the full US & lakes Navionics maps for the Chart plotter, but where can I get the charts for OpenCPN?
__________________ The Nomad Blog Mother, mother ocean, I have heard you call Everything I know about cruising I learned from Travis McGee- https://theroamingnomad.com
OpenCPN chart downloader will install the inland lakes and rivers charts. Look for ACE (Army Corp of Engineers) in the list of ENC chart catalogs. You can update the charts easily with a couple mouse clicks.
There is also a separate chart of buoy locations. These move a lot so they maintain them separately.