German World War II submarine
German submarine "U-581" was a Type VIIC U-boat of Nazi Germany's "Kriegsmarine" during World War II.
She carried out two patrols and sank one auxiliary warship of 364 GRT.
She was scuttled by her own crew after being pursued and attacked by a British warship near the Azores on 2 February 1942. After 20 years of search, in 2016, in a depth of approx. 900 m, the boat was discovered and filmed.
Design.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. "U-581" had a displacement of when at the surface and while submerged. She had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of for use while surfaced, two Brown, Boveri &amp; Cie GG UB 720/8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .
The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . "U-581" was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one SK C/35 naval gun, 220 rounds, and a C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.
Service history.
The submarine was laid down on 25 September 1940 at Blohm &amp; Voss, Hamburg as yard number 557, launched on 12 June 1941 and commissioned on 31 July under the command of "Kapitänleutnant" Werner Pfeifer.
She served with the 5th U-boat Flotilla from 31 July 1941 for training and moved to the 7th flotilla for operations until her loss, from 1 December 1941 until 2 February 1942.
First patrol.
The boat departed Kiel on 13 December 1941, moved through the North Sea, negotiated the gap between the Faroe and Shetland Islands and entered the Atlantic Ocean. She docked at St. Nazaire on the French Atlantic coast on the 24 December 1941.
Second patrol and loss.
For her second foray, "U-581" left St. Nazaire on 11 January 1942. On 19 January, she likely sank the British armed trawler northeast of the Azores. There is an element of doubt because the small warship was not reported missing until this date.
"U-581" was sunk by depth charges from the British destroyer near the Azores on 2 February 1942. Four men died; there were 41 survivors.
One of "U-581"'s officers, Walter Sitek, swam six kilometres to land. He was repatriated to Germany through neutral Spain. Sitek survived the war.
References.
Notes.
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