CM93 v2 charts are global vector nautical charts originally produced by C-Map. Although officially obsolete and no longer commercially supported for the general public, they remain popular among cruisers and hobbyists using open-source navigation software like OpenCPN due to their worldwide coverage and small file size. Understanding CM93 v2 Charts
Tips for Getting the Most Out of CM93 V2 Charts
Users should exercise extreme caution when attempting to download these charts from unofficial sources: Outdated Data : The last official update for CM93 v2 was reportedly in cm93 v2 charts download
Data Currency: CM93 v2 charts are outdated. C-MAP ceased official updates for the v2 format years ago in favor of newer, encrypted versions. They should be used for situational awareness and planning, but not as your primary means of navigation in restricted waters where recent hydrographic changes (like shifted sandbars or new buoys) are critical.
Compatibility: OpenCPN natively supports CM93 v2. To use them, you must point the software to the top-level directory containing the .EXD version file and the 144 geographical subdirectories . CM93 v2 charts are global vector nautical charts
The CM93 V2 charts come with a range of features that make them an attractive solution for traders. Some of the key features include:
Data Age: The last major updates to the CM93 v2 database were roughly around 2011 . While useful for general planning, they should not be used as your primary source for navigation in hazardous areas . In the same Charts tab, ensure the checkbox
often maintain links to regional chart sets (e.g., SE Asia, Indian Ocean, Western Pacific) for the cruising community. Community Forums