Now that the waters are displaying fine, with names, I am facing another problem: The names of islands are missing when using the default style. I do not see them even in the gmapsupp.img file. Here are two examples that I tried. The first one is very sparsely mapped, and the second one is very detailed: http://www.openstreetmap.org/browse/way/42942687 name=Karjamätäs, place=islet (role=inner in a multipolygon that has waterway=riverbank in role=outer) http://www.openstreetmap.org/browse/way/36911729 name=Seurasaari, place=island, natural=coastline (in the Baltic sea) There is a place=island in the points file but no place=island or place=islet in the polygons file. Would that help? What should the area name be set to? If a natural=coastline is converted to a sea multipolygon by the generate-sea code, should the natural=coastline island also be converted to a land multipolygon in role=outer and any areas on the island in role=inner, so that there would be no drawing conflict with areas on the island? Best regards, Marko