Wikipedia
Baggensstäket
Baggensstäket (also Baggarstäket or Södra stäket) is a strait in the Stockholm archipelago, between the island of Värmdö and the mainland ( Södermanland).
It is part of the waterway between the firth of Baggensfjärden and bay of Lännerstaviken. The waterway continues northwards through Skurusundet till Stockholm. The strait is shallow and narrow and can only be traversed by small vessels with up to 3 metre draft. Traffic through the strait is heavy in summertime.