After looking closer, I agree it's a US sub. BUT U-505 was captured by US forces during WWII. It's quite a story. Check it out.
Captured by the USS Guadalcanal task force under the command of Daniel V. Gallery. He wrote a book, titled
Clear The Decks!, which is a historical account of his experiences during WWII, including the capture of U-505, which is where I read about it first. More recently, he wrote a book, titled
Twenty Million Tons Under the Sea, specifically covering the capture of U-505.
He also wrote a series of naval humor novels --
Stand By-y-y-y to Start Engines,
Now, Hear This!,
Cap'n Fatso, and
LCU 1124; I recommend them highly. The first one is naval aviation humor, and would probably tickle more people here -- in one scene, the Blue Angels flying in formation near the top of a space between two solid cloud layers, and they see a flying boat down near the lower layer, so they roll inverted. The pilot of the seaplane goes back to the can, and his passenger, an Admiral, sees the formation, sees that he can see their canopies, loses his local vertical, and tries to flip the seaplane over on its back. In another scene, the Angels get back at an overly-snotty flight test officer who's been putting their flight crew on report for chickenshit violations by replacing a trio of greenies on their way to their formation flying test -- but I'll let you read that one for yourself.
