On Feb. 12, 1946, U-3514 was sunk off the coast of Northern Ireland in Operation Deadlight, meant to ensure elimination of the German submarine fleet after the war.
The sub was sunk at 10:04 a.m. by ship guns and depth charges, the last of 116 scuttled by the Royal Navy.
In anticipation of the end of the war in early May 1945, German U-boat captains began scuttling their own boats, preventing an estimated 200 from falling into the hands of the Allies. On May 4, the German Navy ordered all U-boats to go to ports in Norway. On May 8, there were 156 still afloat.
Their fate was sealed by an agreement among the Allies that sinking the vessels was more economic than scrapping them. The boats were gathered at Lisahall, Northern Ireland, and Loch Ryan in Scotland, but a great number (som...