General History: HMS Orion - The Super Dreadnought

The Orion-class were the first dreadnought battleship to be armed with a gun larger than 12-inches. This would, in addition to the necessary changes to mount that gun, prompt them to be called 'Super Dreadnoughts'. The 13.5-inch armed Orion would, as such, create a new naval race and a new kind of battleship.
Or an extension upon the existing dreadnoughts, depending on how you view it.
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