The bunker housed the control panel for the electrically detonated mines in the waters before the St Helier harbour.
The bunker can be visited.
Strange closing mechanism.
At the entrance of the harbour lies a Sk that consists of a casemate for Pak mixed with a bunker which has some features of a L 409.
The armoured plate for the 4.7 cm FPak 36 (t) is still visible.
Seen from the ferry.