I generally have nearly no gaps when using =polygons. The gaps I see are more that land is inside the see (but not background inside see). Patch did not seem to help.

On 19.01.2010 19:50, Mark Burton wrote: 
With all the excitement due to mp recently, I had completely forgotten
about this little addition to the sea generation code I did a while
back. It adds a new generate-sea option called close-gaps which
takes a distance (in metres). Gaps in the coastline less than this
distance, will be closed with a straight line. Not yet proven so please
test.

Typical usage: --generate-sea=polygons,no-sea-sectors,close-gaps=1000

Mark
  

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