I received my latest civil engineering magazine and it had a story about the U-505 being moved from outside to a display building due to the effects of weather and pollution on the hull.
I was reading the article when I noticed something on the sub. It is located at the bottom of the hull and looks like some kind of sonar dome.
You can see it just to the right of the road sign. I looked at other photos of the sub and they all show this item.
Anybody have any idea what it is?