On Wednesday 29 April 2009 12:48:06 Alice Kaerast wrote: > And remember the coastline should show the mid-tide level. No, it should show the high-tide level. Most coastline data in OSM is based on PGS data, which shows the high-tide level. See: <http://wiki.openstreetmap.org/wiki/Tag%3Anatural%3Dcoastline#Tidal_position> -- m.v.g., Cartinus