Quote:
The CM93 data seems to come from C-Map. They only have NT+, MAX, and MAX Pro today so maybe CM93 data is really free?
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It was the most widely distributed chart package due to lack of encryption, or encryption that was easily cracked (I can't
recall which). It's definitely still licensed/owned, not free to distribute, etc.
Almost every anchorage will have someone that has "CM93's", most of which are old, some are really old/broken (lateral markers missing from inland waterways and other oddities.)
If someone is after freebies, I think there's better options out there that can even be used on some plotters with a bit of
work (I won't name them here).