Thats a pre-Dreadnought as not all of the guns are of the all big concept.
It's from an AU, but it's basically a dreadnought hull with pre-dreadnought armament. The biggest different between a dreadnought hull and a pre-dreadnought hull is that a dreadnought hull is longer and has turbines (and typically four props).
If you want a dreadnought example, here you go, though it's pretty much the same hull anyway: