>>392
めんどくさいな
検索して適当に貼るから読んで

晴嵐の攻撃目標はガトゥン閘門だよ
locksは閘門で関門ではなく、ましてやダムじゃない

The Seirans, painted to resemble U.S. Army Air Forces planes, would fly northeast over Colombia, turn west over the Caribbean, then attack from the north at dawn, torpedoing the Gatun locks.

A full-scale mockup of the Gatun locks was constructed to practice Seiran torpedo runs, but training conditions proved ex­tremely difficult.
In fact, only one pilot had the requisite torpedo experience, so it was decided the Seirans would carry a single large bomb instead of a torpedo.

http://www.historynet.com/japans-panama-canal-buster.htm