Good news - i created now the SVG version of the map. You can easily create new pages for each of the islands by clicking the link in the map.
File upload for island CRs? ist now possible. Add (:cr2svg:) and you can click on the link after saving the page to upload the CR of your island. Please make sure it contains a border of 2 oceans in each direction around the island.
Unfortunately i don't have a report for the full 15th world therefore some links are on "unknwon" terrain. Please refer to this picture which i got from the blue boats faction. It also contains some islands in the 16th world.