The Tirpitz Battery, photographed from Allied aeroplane, July 31, 1916

General view of the powerful Tirpitz Battery.

The background: Ostend.

Inset: Breech of one of the Guns.

The Tirpitz Battery.

This powerful battery has four 11in. armour-protected guns, mounted on circular tracks on hollow platforms of masonry about 46 feet in diameter.

The shelters behind the guns were destroyed. The battery was protected by trenches and barbed-wire entanglements.

On the left, facing the sea, are screens which masked the fire of the guns from the land observation-posts. In front of the right-hand gun was the post of commandment.