引用・参考文献 https://www.quora.com/Between-1962-1991-why-did-the-US-Navy-keep-USS-Lexington-CV-16-as-a-training-carrier-for-so-longhttps://www.quora.com/Why-was-the-F-4-and-A-6-considered-too-heavy-for-the-essex-class-carriers-when-the-Essex-class-could-carry-the-much-heavier-A-3
http://www.nicovideo.jp/watch/sm46096900
