[mcswell]

It's possible that one or two of the torpedoes hit and was a dud at Midway, but the real problems were the slow speed of the torpedo planes, the need to drop the torpedoes at an even slower speed, the maneuverability of the Japanese carriers, and most of all the lack of fighter cover, which left the torpedo planes sitting ducks. The evidence seems to imply that none of the torpedoes hit at all.