Hi Gary,
it seems that nobody has an idea, so maybe it is related to the device?
Did it work with older versions of the precompiled sea ?
Is all the country land flooded ?
Gerd
when i use the --precomp-sea= option with a file download from http://osm2.pleiades.uni-wuppertal.de/sea/latest/sea.zip
I get the sea flooding the land, I don't use any options, it seems to be fine when viewed on Basecamp, but not when i put the map on to a hcx legend.