| Problem | Likely Cause | Solution | |---------|--------------|----------| | “No CM93 charts found” | Wrong folder name | Re-add directory, ensure CM93EDITION.DAT exists | | All charts show as tiny outlines | Missing detail cells | Your copy is partial – find full 2.5GB set | | Chart edges have vertical lines | Outdated cell boundary file | Delete CM93DICT.DAT and rebuild database | | OpenCPN crashes on zoom | Corrupted cell in folder 04800000 | Temporarily move that folder out, then rebuild |
: They provide global coverage at various scales, from world-scale ( ) down to detailed harbor plans ( or larger). cm93 v2 charts download install
Installing these charts is a manual process that involves pointing your navigation software to the top-level folder. 1. Prepare the Files | Problem | Likely Cause | Solution |
: The subdirectories represent geographical areas of 40° x 40°, with the filenames based on coordinates. 2. Download Sources cm93 v2 charts download install