I decide to carry out a second depth-charge attack and the ship is just turning when a roar goes up, ‘There she is.’ It was a successful attack, and the U-boat has come to the surface, but the job is not yet finished. Perhaps she will crash-dive and try to escape. We can take no chances. So, ‘Full ahead both engines; prepare to ram.’ The guns need no orders. They have already opened fire and the U-boat is getting seven bells knocked out of her.