In 1948 the Royal Navy had proposed in "Ships of The Future Navy" to replace 23 cruisers and 58 fleet destroyers with 50 light cruisers with Cruiser/Destroyers - four 5-inch guns, torpedoes, anti-submarine mortar and "good radar" on 4–5,000 tons displacement built to destroyer standards. The Admiralty offered the government two such proposals in 1951: a new broad beam "Bellona" class with 4 twin Mk 6 4.5 and an enlarged version of US "Mitscher"- and Forrest Sherman-class destroyers with British machinery and sensors with 3 single US 5-inch/54 and two twin US 3-inch/50.