Sorry, my Finnish is very poor, so I write in English.
I am currently on a sailing trip along the Finnish coastline, and my position and my route is shown on an OSM map on my page www.ba-bo.de. Today it is the second time that it seems that I am sleeping on the water because the islands are missing.
What does it depend on whether an island is already mapped or not?
OK, this is OpenStreetMap and everybody can join and edit. So I did. But even some days later, my edits are not yet completely rendered: https://www.openstreetmap.org/#map=15/62.7188/21.1030. Is this delay normal or are there mistakes in my edits?