: Provides up-to-date, licensed vector charts specifically for OpenCPN at a low cost [5].
: The distribution of these files via public download links often involves copyright infringement, as the original data was proprietary. Most reputable navigation forums have removed direct download links to comply with copyright laws [1]. Modern Alternatives
: Free, high-quality official vector charts for U.S. waters [6]. Download Cartas cm93 rar
For safer and legal navigation, modern sailors typically use:
: These charts are not kept up to date with the latest Notices to Mariners. Relying on them for primary navigation is dangerous as they may lack critical information on new hazards, buoy changes, or depth variations [2, 3]. Relying on them for primary navigation is dangerous
: A source for official S-63 encrypted professional charts [7].
: The CM93 v2 database is an older, unofficial collection of global nautical charts. While widely circulated in the sailing community for decades, it is now considered outdated [1, 2]. it is now considered outdated [1
: The .rar files usually contain a folder structure of "Cells" (vector data) and a SETS.EXT file, which is required by chart plotters to index the data [3, 4].