The are legacy global vector nautical charts that remain popular among the yachting community for their broad coverage and compatibility with open-source navigation software like OpenCPN . While they are technically outdated, they serve as a valuable reference tool for planning and secondary navigation. Understanding CM93 v2 Charts
. Unlike newer, encrypted formats, CM93 v2 is an unencrypted, open-access format that remains a staple for cruisers, though it is no longer officially supported or updated by Jeppesen (now part of Navico/C-Map). 1. Identifying CM93 v2 vs. v3 Before installation, verify you have the correct version. OpenCPN only supports Version 2 cm93 v2 charts download install
Note: CM93 datasets are large; ensure sufficient disk space (several GBs depending on coverage). The are legacy global vector nautical charts that
: Select the Charts tab, then Chart Files . Unlike newer, encrypted formats, CM93 v2 is an