German submarine U-1021

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Career
Name: U-1021
Ordered: 13 June 1942
Builder: Blohm & Voss, Hamburg
Yard number: 221
Laid down: 6 May 1943
Launched: 13 April 1944
Commissioned: 25 May 1944
Fate: Sunk, 14 March 1945
General characteristics
Type: Type VIIC/41 submarine
Displacement: 769 long tons (781 t) surfaced
871 long tons (885 t) submerged
Length: 67.23 m (220 ft 7 in) o/a
50.5 m (165 ft 8 in) pressure hull
Beam: 6.2 m (20 ft 4 in) o/a
4.7 m (15 ft 5 in) pressure hull
Draft: 4.74 m (15 ft 7 in)
Propulsion: 2 × supercharged Germaniawerft 6-cylinder 4-stroke F46 diesel engines, totalling 2,800–3,200 bhp (2,100–2,400 kW). Max rpm: 470-490
2 × electric motors, totalling 750 shp (560 kW) and max rpm: 296.
Speed: 17.7 knots (32.8 km/h; 20.4 mph) surfaced
7.6 knots (14.1 km/h; 8.7 mph) submerged
Range: 15,725 km (8,491 nmi) at 10 kn (19 km/h) surfaced
150 km (81 nmi) at 4 kn (7.4 km/h) submerged
Test depth: 250 m (820 ft)
Crush depth: 275–325 m (902–1,066 ft)
Complement: 44–52 officers & ratings
Armament: 5 × 53.3 cm (21 in) torpedo tubes (4 bow, 1 stern)
14 × torpedoes or 26 TMA mines
1 × 8.8 cm (3.46 in) deck gun (220 rounds)
Various AA guns
Service record[1][2]
Part of: 31st U-boat Flotilla
(25 May–30 November 1944)
11th U-boat Flotilla
(1 December 1944–14 March 1945)
Commanders: Oblt.z.S. William Holpert
(25 May 1944–14 March 1945)
Operations: 1st patrol: 20 February–14 March 1945
Victories: None

German submarine U-1021 was a Type VIIC/41 U-boat of Nazi Germany's Kriegsmarine during World War II.

Laid down on 6 May 1943 at the Blohm & Voss yard in Hamburg, the submarine was launched on 13 April 1944, and commissioned on 25 May 1944, under the command of Oberleutnant zur See William Holpert.

Service history[edit]

U-1021 served with 31st U-boat Flotilla, a training unit, and later with 11th U-boat Flotilla from 1 December 1944 until its disappearance in March 1945.

Patrol and loss[edit]

U-1021 sailed from Bergen on 20 February 1945 and headed for the waters around Land's End.[3]

U-1021 was presumed to have been sunk on 30 March 1945 in The Minch in the Hebrides, by depth charges from the British frigates Rupert and Conn.[4]

Discovery[edit]

However, the wreck of U-1021 was identified by nautical archaeologist Innes McCartney and historian Axel Niestle in December 2006, 7 nautical miles (13 km) off Newquay, Cornwall, at position 50°33.3′N 5°11.6′W / 50.5550°N 5.1933°W / 50.5550; -5.1933Coordinates: 50°33.3′N 5°11.6′W / 50.5550°N 5.1933°W / 50.5550; -5.1933, close to two other U-boats, U-325 and U-400. Further research by Innes McCartney led to the conclusion that all three submarines were sunk in the Bristol Channel by a deep-trap minefield.[4] Minefield "HW A3", which was fatal to the U-1021, was laid by HMS Apollo on 3 December 1944.[5]

The attack of 30 March 1945 previously assumed to have sunk U-1021 is now believed to have sunk U-965.[4]

References[edit]

Notes
Bibliography

External links[edit]

See also[edit]