i'm new to opencpn
. Downloaded latest version.
went to add chart directory. My directory is called CM93. Within it are subfolders named with numbers e.g 04500180. within these are subfolders named C, D and E and within these are files (which I assume are charts) with a .C suffix. Which directory or subdirectory (ies) should I add to the loaded . charts
tab. These charts
were given to me on a stick by a guy who assured me they were good and legal