引用・参考資料等 http://www.navweaps.com/Weapons/index_weapons.phphttps://www.quora.com/Why-did-the-U-S-Navy-decide-to-scrap-the-Alaska-class-ships-instead-of-repurposing-them-for-other-uses
http://www.nicovideo.jp/watch/sm45807796
