Is it possible that she may have carried some weapons, or something top secret? Since Michail said that the British Admiralty still considers some thing Top Secret? And perhaps the Germans knew that she was carrying something, therefore maybe she got struc buy a Torpedoe. I know that some hospital ships have been used in both wars to carry weapons and ammunition. This was a great idea. But Germans knew about some of them, so just maybe, she really was full of ammo?