I'm not sure how many people still make raster nautical charts for OpenCPN, but after reading the Western Australian Cruising Guide, I decided get back into it. Here's a write-up of a web app I developed for this purpose:
blog.arribasail.com/2024/12/tech-improved-web-app-for-making-nautical-charts.html
Once you have imgkap installed, it is just two clicks and a copy/paste to make a KAP chart usingGoogle Maps satellite imagery.