First, a technical distinction: CM93 refers to C-MAP’s cartographic database format, a vector chart standard used in many marine GPS plotters and software. Version 2 (v2) is a specific edition from the early 2000s that became widely circulated, covering the entire world with detailed vector charts. Unlike raster charts (scanned images of paper charts), vector charts allow users to toggle data layers (e.g., depth contours, buoys, lights), search for ports, and obtain real-time ship positioning.
The version’s popularity stems from its comprehensive global coverage in a single, relatively compact file set (approx. 1.5–2 GB). For long-distance cruisers crossing oceans, having a unified chart set for the entire planet—from the South Pacific atolls to the Norwegian fjords—is invaluable. Many open-source navigation platforms, most notably OpenCPN, were designed or adapted to read CM93 v2 charts. cm93 v2 charts download install
If you already have a CM93 v2 folder, install it as described. If you are looking for one, know that any public download violates copyright and contains obsolete data – invest in official charts instead. First, a technical distinction: CM93 refers to C-MAP’s
You cannot just "buy" CM93 v2 from a store anymore. Distribution is almost entirely via peer-to-peer and sailing forums (e.g., CruisersForum, Panbo, or OpenCPN user groups). you will need:
To follow this guide, you will need: