If you have not already installed OpenCPN, download the latest stable release from the official OpenCPN website. OpenCPN is supported on Windows, Mac OS X, Linux, and Android. For Windows systems, download the .exe installation package. For Mac, download the .dmg file, open it, and drag the OpenCPN application icon into your Applications folder.
After downloading and extracting, you should see a folder structure like this:
node node-cm93/bin/app.js scan -i cm93files/ -o cm93json/ -id 02100420,01500420 cm93 v2 charts download install
For example, if you have:
If you work in marine navigation, you have likely heard of CM93 v2 charts—one of the most widely distributed electronic chart formats for recreational and professional use. Whether you are using OpenCPN, MaxSea, TimeZero, or other navigation software, understanding how to obtain and install these vector charts is essential. In this comprehensive guide, we will explore what CM93 v2 charts are, the legal and safety considerations surrounding their use, where to find them, and how to configure them step by step across multiple platforms. If you have not already installed OpenCPN, download
Wait for the green progress bar to finish indexing. Click to close the options menu.
Browse your files, select your main CM93 folder, and click . Step 3: Rebuild the Chart Database For Mac, download the
If you only see .A , .B , .C files but no .DAT files, the dataset is incomplete.
Installing these charts is a manual process that involves pointing your navigation software to the top-level folder. 1. Prepare the Files
Browse your system to locate and select your root CM93_v2 folder, then click . Ensure the box next to your new chart path is checked.
CM93 v2 is a vector chart format originally developed by C-Map (now part of Jeppesen Marine). It is an older version of the CM93 chart series, with Edition 2 (ed2) being the second major iteration of this format. Unlike the raster charts that store images of paper maps, CM93 v2 charts store data as vectors—points, lines, and polygons that define coastlines, depth contours, navigational aids, hazards, and other features.