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German submarine U-928 facts for kids

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U 570.jpg
U-570 Type VIIC submarine that was captured by the British in 1941. This U-boat is almost identical to U-928.
Quick facts for kids
History
Nazi Germany
Name U-928
Ordered 25 August 1941
Builder Neptun Werft AG, Rostock
Yard number 515
Laid down 5 January 1943
Launched 15 April 1944
Commissioned 11 July 1944
Fate Surrendered on 9 May 1945; sunk as part of Operation Deadlight on 16 December 1945
General characteristics
Class and type Type VIIC submarine
Displacement
  • 769 tonnes (757 long tons) surfaced
  • 871 t (857 long tons) submerged
Length
  • 67.10 m (220 ft 2 in) o/a
  • 50.50 m (165 ft 8 in) pressure hull
Beam
  • 6.20 m (20 ft 4 in) o/a
  • 4.70 m (15 ft 5 in) pressure hull
Height 9.60 m (31 ft 6 in)
Draught 4.74 m (15 ft 7 in)
Installed power
  • 2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels)
  • 750 PS (550 kW; 740 shp) (electric)
Propulsion
Speed
  • 17.7 knots (32.8 km/h; 20.4 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range
  • 8,500 nmi (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth
  • 220 m (720 ft)
  • Crush depth: 250–295 m (820–968 ft)
Complement 4 officers, 44–52 enlisted
Armament
  • 5 × 53.3 cm (21 in) torpedo tubes (four bow, one stern)
  • 14 × torpedoes or
  • 26 TMA mines
  • 1 × 8.8 cm (3.46 in) deck gun (220 rounds)
  • 1 × 3.7 cm (1.5 in) Flak M42 AA gun
  • 2 × twin 2 cm (0.79 in) C/30 anti-aircraft guns
Service record
Part of:
  • 4th U-boat Flotilla
  • 11 July 1944 – 8 May 1945
Commanders:
  • Oblt.z.S. / Kptlt. Hellmut Stähler
  • 11 July 1944 – 9 May 1945
Operations: None
Victories: None

German submarine U-928 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

She was ordered on 25 August 1941, and was laid down on 5 January 1943 at Neptun Werft AG, Rostock, as yard number 515. She was launched on 15 April 1944 and commissioned under the command of Oberleutnant zur See Hellmut Stähler on 11 July 1944.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-928 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two SSW GU 343/38-8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph). When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-928 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes or 26 TMA mines, one 8.8 cm (3.46 in) SK C/35 naval gun, (220 rounds), one 3.7 cm (1.5 in) Flak M42 and two twin 2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of between 44 — 52 men.

Service history

On 9 May 1945, U-928 surrendered at Bergen, Norway. She was later transferred to Lisahally, Northern Ireland on 30 May 1945. Of the 156 U-boats that eventually surrendered to the Allied forces at the end of the war, U-928 was one of 116 selected to take part in Operation Deadlight. U-928 was towed out on 16 December 1945, and sunk.

The wreck is located at 56°06′N 10°05′W / 56.100°N 10.083°W / 56.100; -10.083.

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