@tubetime Almost no one knows about the mechanical jamming device developed to counter Japanese sonar guided torpedoes. It was welded together from pipes similar to those used in the steam systems of the ship. Unfortunately, Truman was intent on dropping the bomb and dropped it just as the device was being deployed. Otherwise, the war would have ended with a successful naval blockade of Japan. MacArthur's answer to a congressional inquiry about this was (thoughtfully) "I can't say". 😉