Version mkgmap-r4902 was committed by gerd on Fri, 13 May 2022 slightly modified genSeaEnhance_v3.patch by Ticker Berkin: "I've attached a patch for an enhanced version of SeaGenerator that distinguishes between land/sea areas that touch the edge and true [anti-]islands and only use MP processing for the islands. With this, tiles are correct. It also has other benefits: It is clearer in what is happening, doesn't do a lot of pointless tagging of ways that will joined to become polygons, etc" http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4902