"seamark:name"=>"Friesche Sluis, Zoutkamp","seamark:type"=>"gate","seamark:gate:clearance_width"=>"6","seamark:gate:clearance_height_open"=>"2.7","seamark:gate:clearance_height_closed"=>"0"
"maxwidth"=>"8","wikidata"=>"Q17444089","seamark:type"=>"gate","seamark:gate:category"=>"flood_barrage","seamark:gate:clearance_width"=>"8"
"maxwidth"=>"8","seamark:type"=>"gate","seamark:gate:category"=>"flood_barrage","seamark:gate:clearance_width"=>"8"