CM93 v2 charts are a widely used legacy format for marine navigation, particularly valued by the open-source sailing community for their compatibility with software like
: This site maintains links to various legacy chart sets, including CM93 v2 for regions like SE Asia, the Indian Ocean, and the Western Pacific. Maritime Forums : Communities such as SeaTracker cm93 v2 charts download install
. They should never be used as your sole source of navigation. Sandbars shift, new buoys are placed, and landmarks change. Always cross-reference CM93 data with: Up-to-date paper charts or official ENC/Raster charts. CM93 v2 charts are a widely used legacy
Legal Note: Official support for CM93 v2 ended around 2014, and many versions found online are outdated or distributed via peer-to-peer sites. For safety, always cross-reference these with official, up-to-date NOAA ENC charts or o-charts. Where to Download CM93 v2 Charts A top-level CM93 (or similar) folder
OpenCPN recognizes CM93 charts if placed in its chart directories and index updated.
CM93-version2 charts are distinct from standard S-57 vector charts. They use a unique folder structure consisting of roughly 144 subdirectories, each covering a geographical area.