On this day in 1946, the last of 116 captured German U-boats to be scuttled by the Allies is sunk 100 miles off the northwest coast of Ireland.
Operation Deadlight
Operation Deadlight was the code name for the Royal Navy operation of November 1945 – February 1946 to scuttle German U-boats surrendered to the Allies after the defeat of Germany near the end of World War II.
U-boats excluded from Operation Deadlight
Several U-boats escaped Operation Deadlight. Some were claimed as prizes by Britain, France, Norway, and the Soviet Union. Four were in East Asia when Germany surrendered and were commandeered by Japan. U-181 was renamed I-501, U-195 – I-506, U-219 – I-505, U-862 – I-502, and two other boats, U-511 and U-1224, had been sold to Japan in 1943 and renamed RO-500 and RO-501
https://www.youtube.com/watch?v=IP_BB5XgY6k
Please Read : December 11, 1941 – German declaration of war against the United States (THIS DAY IN HISTORY)