Chart Sources Where to find to find the charts you need.
OpenCPN Translation Project. Thanks to volunteer interpreters, like you, OpenCPN Supports 20+ languages. If your native language isn't supported yet, a tiny bit of your time can make it happen. No coding knowledge is needed. Its free and fun.
All Things OpenCPN Highlighting & curating relevant items.
OpenCPN App is available at Google Play for a small fee.
Collection of tutorials, demos, etc.