U-821
| Country | Germany |
| Ship Class | Type VII-class Submarine |
| Builder | Oderwerke AG |
| Slip/Drydock Number | II |
| Ordered | 20 Jan 1941 |
| Laid Down | 2 Oct 1941 |
| Launched | 26 Jun 1943 |
| Commissioned | 11 Oct 1943 |
| Sunk | 10 Jun 1944 |
| Displacement | 769 tons standard; 871 tons submerged |
| Length | 220 feet |
| Beam | 20 feet |
| Draft | 18 feet |
| Machinery | 2 Germaniawerft supercharged F46 diesel engines (2,800-3,200bhp); 2 Brown, Boveri & Cie GG UB 720/8 elector motors (740shp); 2 shafts |
| Speed | 18 knots |
| Range | 8,500nm at 10 knots surfaced, 80nm at 4 knots submerged |
| Crew | 60 |
| Armament | 4x53.3cm bow torpedo tubes, 1x53.3cm stern torpedo tube, 14 torpedoes or 26 TMA mines, 1x8.8cm deck gun, 1x3.7cm Flak M42 anti-aircraft gun, 2x2x2cm C/30 anti-aircraft guns |
| Submerged Speed | 7.6 knots |
Contributor: C. Peter Chen
ww2dbaseGerman submarine U-821 was commissioned into service in Oct 1943. She was a member of the 4th and 24th Submarine Flotillas before being assigned to the 1st Submarine Flotilla in Mar 1944 for her first war patrol out of Bergen, Norway, during which she encountered no targets. Her second war patrol, out of Brest, France, was ended merely four days after it began. She was discovered on the surface by British Royal Air Force aircraft off Ushant island, France. Commanding officer Oberleutnant zur See Ulrich Knackfuss decided against diving, instead ordering her crew to fire on the British aircraft. Attacking aircraft eventually grew to three Mosquito aircraft (of No. 248 Squadron RAF) and one Liberator bomber (No. 206 Squadron RAF), overpowering and sinking the submarine. U-821 was able to shoot down one Mosquito aircraft. 50 were killed; one survivor was picked up by a German rescue vessel a few hours after the sinking.
ww2dbaseSource: Wikipedia
Last Major Revision: Aug 2021
Submarine U-821 Interactive Map
Photographs
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U-821 Operational Timeline
| 20 Jan 1941 | The order for U-821 was issued. |
| 2 Oct 1941 | The keel of U-821 was laid down by Oderwerke in Stettin, Germany.Pommern, |
| 26 Jun 1943 | U-821 was launched by Oderwerke in Stettin, Germany. |
| 11 Oct 1943 | U-821 was commissioned into service with Ludwig Fabricius in command; she was assigned to the 4th Submarine Flotilla. |
| 1 Nov 1943 | U-821 was assigned to the 24th Submarine Flotilla. |
| 2 Dec 1943 | Ernst Fischer was named the commanding officer of U-821, relieving Ludwig Fabricius. |
| 1 Jan 1944 | U-821 was assigned to the 4th Submarine Flotilla; Ulrich Knackfuss was named her commanding officer, relieving Ernst Fischer. |
| 1 Mar 1944 | U-821 was assigned to the 1st Submarine Flotilla. |
| 19 Mar 1944 | U-821 departed Bergen, Norway for her first war patrol. |
| 12 Apr 1944 | U-821 completed her first war patrol. |
| 6 Jun 1944 | U-821 departed Brest, France for her second war patrol. |
| 10 Jun 1944 | U-821 was sunk by aircraft off Ushant, France. |
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Captain Henry P. Jim Crowe, Guadalcanal, 13 Jan 1943
