|Ordered||23 Dec 1939|
|Laid down||17 May 1941||Bremer Vulkan-Vegesacker Werft, Bremen-Vegesack (werk 26)|
|Launched||16 Feb 1942|
|Commissioned||28 Mar 1942||Oblt. Hans Lange|
|Successes||No ships sunk or damaged|
Sunk 15 Sept, 1942 west of the Shetlands, in position 59.50N, 09.28W, by depth charges from a British Whitley aircraft (Sqdn. 58/Q). 43 dead (all hands lost).
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-261 did not suffer any casualties (we know of) until the time of her loss.