"seamark:harbour:category"=>"marina","seamark:type"=>"harbour"
"fee"=>"yes","power_supply"=>"yes","seamark:harbour:category"=>"marina","seamark:type"=>"harbour","url"=>"https://www.terhernstersyl.nl/"
"seamark:harbour:category"=>"marina","seamark:type"=>"harbour"
"seamark:harbour:category"=>"marina","seamark:type"=>"harbour"