Hi, I switched to the new sea-options, but get following error messages. mkgmap V2309 / windows7 / oracle java6 Options: precomp-sea=c:\apps\mymap\sea generate-sea=extend-sea-sectors,floodblocker Unknown sea generation option 'extend-sea-sectors' Known sea generation options are: multipolygon use a multipolygon (default) polygons | no-mp use polygons rather than a multipolygon no-sea-sectors disable use of "sea sectors" extend-sea-sectors extend coastline to reach border land-tag=TAG=VAL tag to use for land polygons (default natural=land) close-gaps=NUM close gaps in coastline that are less than this distance (metres) floodblocker enable the floodblocker (for multipolgon only) fbgap=NUM points closer to the coastline are ignored for flood blocking (default 40) fbthres=NUM min points contained in a polygon to be flood blocked (default 20) fbratio=NUM min ratio (points/area size) for flood blocking (default 0.5) Unknown sea generation option 'floodblocker' Known sea generation options are: multipolygon use a multipolygon (default) polygons | no-mp use polygons rather than a multipolygon no-sea-sectors disable use of "sea sectors" extend-sea-sectors extend coastline to reach border land-tag=TAG=VAL tag to use for land polygons (default natural=land) close-gaps=NUM close gaps in coastline that are less than this distance (metres) floodblocker enable the floodblocker (for multipolgon only) fbgap=NUM points closer to the coastline are ignored for flood blocking (default 40) fbthres=NUM min points contained in a polygon to be flood blocked (default 20) fbratio=NUM min ratio (points/area size) for flood blocking (default 0.5) (several times) Chris