I was in Chicago a while back visiting my son. We went down to the museum that houses the U-505. The new display is very impressive. We were standing aft of the submarine, looking forward, when I noticed that the starboard screw was lower than the port screw by about a foot or so. I asked the curator whether this was by a result of battle damage bending the propellor shaft or a design feature. He did not know. My guess is battle damage. Does anyone know for sure?