[PA Engineer]

This was the first submarine to be sunk by another submarine (British). There was a special on this and I believe it was the History Channel.

[ErnstStavroBlofeld]

The ship(U-234) was surrendered to the Americans and the crew put in POW camps for several years. There are rumors that the Uranium Oxide was used in the atomic bombs that were dropped on Hiroshima and Nagasaki.

[Trinity5]

"This was the first submarine to be sunk by another submarine (British)."

I believe that happened in WWI not WWII. And it was a Brit submarine that was sunk by a German.

In this case it was two submerged subs that engaged each other that resulted in one sinking.