Grand Blockhaus, Museum of Poche of Saint-Nazaire, Batz-sur-Mer, Pays de la Loire, France
The blockhouse of Batz-sur-Mer is part of the Festung of Saint-Nazaire of the Atlantic Wall, made up of more than a thousand bunkers around the submarine base.
This is the command and firing position of Tu 301 . Connected to all the bunkers of the place of Batz-sur-Mer as well as to the other command posts of the area and he had to transmit to the guns on track the coordinates of the enemy ships to allow the shooting.
Its construction began in October 1942 and ended in February 1943.
Its total area is 300 m2 spread over five levels. The basement consists of three chambers, a ventilation room, an armory, a place of stewardship, and a small infirmary and the boiler room.
On the ground floor is the exploitation and plotting room. It adjoins a signal room, the officer’s quarters, the toilet block, and a very large entrance protected by two defenses for portable weapons.
On the floor, an observation post equipped with a goniometric telescope was installed. The last level houses a rangefinder. The construction was surrounded by a network of barbed wire.
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