"maxdraught"=>"2.85","maxwidth"=>"9","seamark:gate:category"=>"flood_barrage","seamark:gate:clearance_width"=>"9","seamark:name"=>"Damsluis Nieuwersluis","seamark:source"=>"https://www.vaarweginformatie.nl/frp/main/#/geo/detail/EXCEPT_NAV_STRUCTURE/7609","seamark:type"=>"gate"
"maxdraught"=>"1.8","maxheight_referencelevel"=>"canal","maxwidth"=>"5.1","seamark:gate:category"=>"flood_barrage","seamark:gate:clearance_width"=>"5.1","seamark:name"=>"Kockengen, keersluis","seamark:source"=>"https://www.vaarweginformatie.nl/frp/main/#/geo/detail/EXCEPT_NAV_STRUCTURE/9369","seamark:type"=>"gate"