Comprehensive Guide to CM93 v2 Charts Download, Installation, and Usage (2026 Edition)
In summary, while CM93 v2 charts are a fascinating piece of maritime computing history, they should be treated as a secondary reference
CM93 v2 charts are a comprehensive, worldwide collection of vector-based electronic nautical charts (ENCs). Created by the Norwegian company , they were originally sold as a commercial product on CD-ROMs for use in professional Electronic Chart Display and Information Systems (ECDIS). cm93 v2 charts download
CM93 v2 covers nearly the entire world, making it ideal for offshore cruising.
Let's address the central issue:
CM93 v2 charts are a legacy global vector chart database widely used by the maritime community, particularly within open-source navigation software. While newer standards like and S-57/S-63 ENCs have largely replaced them in commercial shipping, CM93 v2 remains a popular "fallback" or planning tool for recreational sailors. What are CM93 v2 Charts?
The foghorn blew twice. Somewhere, a ship signaled its own lonely insistence. Kai plotted a route that threaded between a spit that the ENC missed and a rock that the CM93 v2 insisted was there. He annotated his own note into the map: “Verified by sonar 10 Apr 2026—depth 3.1m. Safe at half tide.” The file saved locally, a new stitch in the quilt. Let's address the central issue: CM93 v2 charts
CM93 v2 charts are a legacy format of unencrypted vector nautical charts originally produced by C-MAP. They are highly popular in the cruising community because they provide worldwide coverage and are compatible with open-source navigation software like OpenCPN .
: Place the CM93 folder (usually containing numerous subfolders labeled 030, 060, etc.) in a dedicated directory on your computer. Loading the Charts : Open your navigation software. Navigate to Options/Settings > Charts > Chart Files . Click Add Directory and select the main CM93 v2 folder. The foghorn blew twice
OpenCPN will read the data. You should see a .EXD file in the folder, which indicates the edition/version of the release.