The North Sea is the final resting place for many warships, on Sept. 14, 1966, twenty-one years after World
War 2 ended it again became a graveyard for a World War 2 era German submarine, the second time this
boat had found herself on the bottom.

The U-2365 was built in Hamburg in 1945, the Type XXIII was a new design and only 61 were commissioned
into the Kriegsmarine before the war ended, only six of these boats ever made it to operational status.
One, the U-2336 was the last U-boat to sink a ship during the war. The U-2365 however had no such success,
she was commissioned on Mar. 2, 1945 and scuttled in the Kattegat on May 8, 1945 having never been on
patrol.

The U-2365 laid on the bottom of the Kattegat until Sept. of 1956 when the newly formed Bundesmarine
decided to raise her and return her to service. Her WW2 engines were removed and she was fitted with new
Mercedes-Benz diesels, these were used only to charge the batteries as the Type XXIII was an electro boat,
driven only by her electric motors. A much smaller version of the Type XXI which revolutionized submarine
design for years to come. The Type XXIII was designed as a coastal boat and was only 275 tons submerged.

She was commissioned into the Bundesmarine as U-Hai S-170, the first submarine in the new German Federal
Navy and used as a training boat. It was being used in this capacity on Sept. 14, 1966 when a weld failed
and she sank in the North Sea, ten of the twenty men on board got off the boat but thirteen hours later a
British trawler found only Peter Silbernagel still alive, the others had died of exposure. The boat was raised
on Sept. 19, 1966 and this time scrapped.