Devastation-class ironclad
The two British Devastation-class battleships of the 1870s, HMS Devastation and HMS Thunderer, were the first class of ocean-going capital ship that did not carry sails, and the first which mounted the entire main armament on top of the hull rather than inside it.
HMS Devastation in 1896
Right elevation and deck plan as depicted in Brassey's Naval Annual, 1887
HMS Devastation was the first of two Devastation-class mastless turret ships built for the Royal Navy. This was the first class of ocean-going capital ship that did not carry sails, and the first whose entire main armament was mounted on top of the hull rather than inside it.
HMS Devastation in 1896.
An interior view of one of Devastation's two main battery turrets, showing a rear view of the turret's two 12-inch (305 mm) 35-ton muzzle-loading rifles. These guns were replaced in 1891 by 10-inch (254 mm) breech-loading rifles.
The Trial trip of Devastation. The Graphic 1873
England's Glory matchbox