created from the former Radio branch of the Design division, and Finance became a division. By mid-1945 the Radio division had become the Electronics division, and Shore and Contracts divisions had been added. The entry of the US into World War II on 7 December 1941 resulted in the FY42 procurement plan and its component war emergency programs, which dwarfed FY40 by projecting 20 aircraft carriers, 50 escort carriers, 35 cruisers, 144 destroyers, 750 destroyer escorts, 127 submarines, and many other ships. The escort carriers and destroyer escorts were ship types that had not been built before, and that many of the projected ships were cancelled in 1944-45. From its inception in 1940 BuShips supervised the building of a larger navy than any previous one in the space of five years. A media release on 22 May 1945 stated that 8 million tons of new ships costing 17 billion dollars (in 1945 money) had been built during the war, and a further 5 million tons of existing ships had been acquired or converted. On 7 December 1941 the total tonnage of the fleet was 2,680,000 tons. In numbers of ships, 7,695 vessels were on hand in December 1941, including landing craft. Over 100,000 vessels and landing craft were built during the war, including 1,150 combatants, 557 auxiliary ships, and 82,266 landing craft. After 1947, BuShips purchased ships for the Departments of the Army and the Air Force, coordinated Department of Defense (DOD) shipbuilding activities, and coordinated navy repair and conversion programs with other federal agencies. By 1949 the Naval Reactors branch of BuShips had been established under Hyman G. Rickover, which resulted in the highly successful naval nuclear power program. By 1955 Naval Reactors had developed the first nuclear-powered submarine, followed by the first nuclear-powered ballistic missile submarine in 1960, with other BuShips branches responsible for the non-nuclear portions of those submarines. In the 1950s BuShips was responsible for procuring the first supercarriers such as the and developing new ship types to carry naval surface-to-air missiles, notably guided missile "frigates" (hull classification symbol DLG) such as the . The Bureau established a formal program of value engineering (VE) in 1957, overseen by Lawrence D. Miles, an engineer who had launched VE at the General Electric Company in 1947, and Raymond Fountain, also from G.E. In 1966 BuShips was succeeded by the Naval Ship Systems Command (NAVSHIPS), known as the Naval