Click to allow OpenCPN to index the new charts. Click OK . Step 5: Verify Coverage Zoom into a known area on the map.
CM93 v2 uses a proprietary scale system. In Options → Charts → Vector Charts tab, set CM93 Detail Level to a medium value (e.g., 25–35) to avoid clutter. Also, enable Reduce details at small scale for performance.
Turn on to see specific depths, or turn off to declutter the screen.
Create a dedicated folder on your main drive (e.g., C:\Charts\ or /home/user/Charts/ ).
Below this top level, the directory contains numerous subdirectories with eight-digit numeric names ranging from 00300000 to 04501020 . There are typically 144 such subdirectories in a complete CM93 v2 dataset. Each subdirectory covers a geographical area of 40 degrees latitude by 40 degrees longitude. cm93 v2 charts download install
Inside each regional directory, you will find subfolders labeled with single letters: . These represent different zoom or scale levels:
Before pointing your navigation software to the charts, you need to organize them properly on your hard drive.
: Because these files are often shared via maritime forums, torrents, or cloud drives, always run a comprehensive antivirus scan on the downloaded ZIP or RAR archive before extracting it.
: Use a tool like WinRAR, 7-Zip, or the native OS extractor to unpack the files directly into your dedicated directory. Click to allow OpenCPN to index the new charts
Note: CM93 datasets are large; ensure sufficient disk space (several GBs depending on coverage).
Q: Can I use CM93 V2 charts on multiple devices? A: Yes, you can use CM93 V2 charts on multiple devices, but ensure that each device is compatible with the charts and that you comply with any licensing agreements.
If you can tell me or what region you are cruising , I can provide more specific instructions on finding updated charts or setting up your display. Installing Charts - OpenCPN
A valid CM93 directory contains an empty file with a .EXD extension (e.g., 20110803.EXD ), which indicates the edition date. How to Download CM93 v2 Charts CM93 v2 uses a proprietary scale system
Here are some tips and tricks to keep in mind when installing CM93 V2 charts:
Look at the bottom of the Options window and ensure is checked.
Using a static, decade-old chart set like CM93 v2 for primary navigation is . Sandbars shift, buoys are relocated, new wind farms appear. In many jurisdictions, using unlicensed, outdated charts can void insurance or even lead to legal liability after an incident.