A previously working build now have no sea polygon. here's is may args list: code-page=1252 ea tdbfile latin1 country-abbr=PHI country-name=PHILIPPINES remove-short-arcs=5 route road-name-pois add-pois-to-areas family-id=639 family-name=OSM_PHIL overview-mapname=40000001 series-name=OSM_PHIL description=OSM_PHIL style-file=~/styles/osm-ph generate-sea=polygons index adjust-turn-headings check-roundabout drive-on-right check-roundabout-flares report-dead-ends ignore-maxspeeds In the polygon styles, I have: natural=land [0x27 resolution 10] Checking the logs there are only two errors related to the coastline: 2010/09/08 09:59:25 WARNING (Osm5XmlHandler): philippines.osm: Non-closed coastline segment does not hit bounding box: 892720649 (11.48494/124.39909) 312537247 (10.99141/124.62028) http://www.openstreetmap.org/?mlat=11.48494&mlon=124.39909&zoom=17 2010/09/08 09:59:25 WARNING (Osm5XmlHandler): philippines.osm: Non-closed coastline segment does not hit bounding box: 312537255 (10.98998/124.62054) 892720555 (11.48520/124.39952) http://www.openstreetmap.org/?mlat=10.98998&mlon=124.62054&zoom=17 The coastlines are fixed now and I'm waiting for the latest geofabrik extract. But this is a very interesting case because, previous builds have sea polygons even when there are coastline errors. I'm using mkgmap svn 1649 -- cheers, maning ------------------------------------------------------ "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ ------------------------------------------------------