Our torpedoes in the early part of the war were an abomination on our fighting man. Failure to detonate was a chronic complaint. Someone should have went to jail for that cluster*&^% they foisted upon our sailors.
Problem was the Top Secret Mk 6 Magnetic Exploder on both the Mk14 in subs and the MK15 on destroyers.
So secret that they were worried about espionage and didn't test it sufficiently.
The only one my Dad fired from a PT boat circled around and nearly bagged the boat. Some officers were not too impressed with the ordnance bureau.