引用・参考資料等 https://tile.loc.gov/storage-services/service/ndnp/dlc/batch_dlc_continental_ver02/data/sn84026749/00294557714/1912082301/0471.pdfhttps://www.quora.com/Which-other-USN-battleships-featured-those-majestic-tripod-masts-like-on-Arizona-and-Nevada-Did-any-still-have-one-or-both-of-them-by-the-end-of-WW2-Were-they-better-than-the-original-cage-masts
http://www.nicovideo.jp/watch/sm43662217
