It is like this: one of the destroyers is sinking and another is heading towards it to render assistance. The other two are converging on where U-691 was about thirty seconds ago, but they are hindered by having to make their way through the middle of the convoy. Almost immediately, they begin to fire their guns. Bischoff looses a spread of torpedoes towards the assisting destroyer. Water is spouting up all around them now as they are straddled by shells from the other two. He does another three-sixty, fixing the image of the convoy in his mind’s eye.