No, but if you look at post #22 here:
http://www.subsim.com/radioroom/show...t=88004&page=2
I have screenshots of the aftermath of an attack. I was just pulling into Wilhelmshaven after a patrol (post #21) when I saw flashes of light in the distance. At first I thought it might be a computer problem, but when I got closer I came upon a couple of sunken ships, and I realized that it had to be an air raid.