The construction of the Neptune battleship, as well as its direct heirs - the classmates of the Colossus and Hercules, was an intermediate but necessary link in the creation of the first British Orion-type super dreadnoughts with 13.5-inch main-caliber artillery located in gun towers located in the diametrical plane along the linear-elevated a scheme that for many years will become classic for "capital" ships of all fleets of the world. In the architecture and layout of "Neptune," "Colossus" and "Hercules" there was a lot of unusual. For the first time, a stern elevated tower and layered placement of medium towers appeared on the battleships of the British fleet of "admiral" projects (which was only on the first battlecruisers), which was an attempt to ensure the maximum side volley while maintaining the bow and stern side volleys equal to the first "dreadnoughts." But, unfortunately, this goal was not achieved.