引用・参考資料等 https://www.quora.com/Can-an-aircraft-carrier-pass-through-the-Panama-Canalhttps://centerformaritimestrategy.org/publications/part-2-can-the-greatest-maritime-infrastructure-project-ever-provide-even-more-benefits-to-the-united-states/
http://www.nicovideo.jp/watch/sm45383404
