I was in the Med and I got surrounded by a group of destroyers and Elcos. I had one acoustic torpedo left in the stern tube. I decided to fire it blind, then I followed it with the external camera. It sailed around for a couple minutes trying to make up its mind what it wanted to hit. Then it locked onto an Elco and sailed underneath it and the magnetic detonator went off.
The explosion pulled the Elco underwater. It spun around about six or seven times and then popped back up to the surface and sat there for five minutes and then sunk!