"maxdraught"=>"3","maxheight_referencelevel"=>"canal","maxwidth"=>"7.15","seamark:gate:category"=>"flood_barrage","seamark:gate:clearance_height"=>"999","seamark:gate:clearance_width"=>"7.15","seamark:information"=>"Open for shipping. Stoplogs","seamark:name"=>"Damsluis","seamark:national_information"=>"Keersluis staat open. Schotbalken.","seamark:source"=>"https://www.vaarweginformatie.nl/frp/main/#/geo/detail/EXCEPT_NAV_STRUCTURE/28170","seamark:type"=>"gate"