 Two were scrapped in 1933 and the last one survived until it was scrapped in 1947.The 18-inch gun had its genesis in the insistence of the First Lord of the Admiralty, Admiral Fisher, for the biggest possible gun mounted on the fastest possible ship.He conceived of what he called "large light cruisers" carrying four guns, which became the , but he wanted their half-sister "Furious" to carry an even bigger gun.