Most nav charts have first Lat then N or S then space then Long then W/E:
54°34.897'N 011°16.063'E
The "Nautical Char Ruler" would be extremely usefull. Any chance to release it?
Nautical almanacs '39-'45, SightReducTables etc. already exists and as far as I know for celestial calculation useable.
162 pages for year 39
400 pages for Part "Lat 40-60"
