end of the Cold War. In 1909, Japan's first domestically designed and produced battleship, Satsuma was launched. Yokosuka became one of the main shipyards of the Imperial Japanese Navy in the 20th century, building numerous battleships such as Yamashiro, and aircraft carriers such as Hiryu and Shokaku. Naval aircraft were designed at the nearby Yokosuka Naval Air Technical Arsenal. During the Pacific War, the Yokosuka Naval Arsenal was attacked by one bomber during the Doolittle Raid on 18 April 1942 and by a large force of carrier aircraft during the Attack on Yokosuka on 18 July 1945. The facilities were seized by the Allied forces at the end of World War II, and on 15 October 1945 the Yokosuka Naval Arsenal was officially abolished. However, the facilities continued to be used in the post-World War II period, by the United States Navy as the Yokosuka Ship Repair Facility and its former property is now under the control of the United States Fleet Activities Yokosuka. A steam hammer from the former Yokosuka Naval Arsenal is on display at the Verny Commemorative Museum in Yokosuka. Examples of ships built at Yokosuka Naval Arsenal Capital ships Battleship , Satsuma-class semi-dreadnought , Fusō-class battleship Owari (Unfinished), Kii-class battleship , Nagato-class battleship Battlecruiser , Ibuki-class armoured cruiser , Kongō-class battlecruiser (Unfinished), Amagi-class battlecruiser Fleet Aircraft Carriers Fleet carrier Hiryū , Shōkaku-class fleet carrier , Unryū-class fleet carrier Shinano, Yamato-class battleship, later converted to a support aircraft carrier (July 1942) Support Aircraft Carriers Shinano, converted from Yamato-class battleship Smaller ships Cruisers , Myōkō-class Heavy cruiser , Takao-class Heavy cruiser , Mogami-class Heavy cruiser Hashidate, Matsushima-class Protected cruiser , Tenryū-class Light cruiser , Agano-class Light cruiser Light Carriers , Zuihō-class Light carrier Converted carrier Destroyers Classes Harusame-class: 4 ships Kamikaze-class(1905): 8 ships Matsu/Tachibana-class: 26 ships Submarine Classes Type B (Type B, B Kai-1,Kai-2): 9 ships Type D (Type D and D Kai): 6 ships Kaidai (Kaidai IIIa, IIIb, VII): 6 ships Kaichū (Kaichu III, IV): 5 ships Notes References Further reading Imperial Japanese Navy Shipbuilding companies of Japan Defunct companies of Japan Arsenals Yokosuka