Hi. I noted that many of the islands in the Åland archipalago (between Sweden and Finland) are flooded. On a GPS unit (gpsmap 66st) the land looks like land, but when howering the pointer over the area it shows the name of the sea, not the name if the island. In qmapshack the islands look flooded. I checked one of the islands (Eckerö, which is westernmost) in JOSM, i could not find any disconnected section nor any self crossing lines or similar issues. I do use the pre-made sea data when i run mkgmap. I also tried running without the pre-made sea data, but it did not change the flooding of these islands. Two screenshots from qmapshack added to the file upload: http://files.mkgmap.org.uk/detail/503 http://files.mkgmap.org.uk/detail/504 What could be the reason for the flooding? regards Karl