Found these on a nice website. I hope you enjoy them as much as I did!
Captured U-805 German sub arrives at Portsmouth, N.H. USA; May 15, 1945
German Uboats communicate
Karl Doenitz
Type IX from the bridge
A U-boat surrenders to the allies in May 1945
Loading a torpedo
U-Boat with a nice skyline
Type II C U-Boat
Hitler inspecting U-Boats in 1938
Type XXI