German submarine U-128 (1941)

Last updated
U-128 17-5-43.jpg
Air attack on U-128
History
War ensign of Germany (1938-1945).svg Nazi Germany
NameU-128
Ordered7 August 1939
Builder DeSchiMAG AG Weser in Bremen
Yard number991
Laid down10 July 1940
Launched20 February 1941
Commissioned12 May 1941 by Ulrich Heyse
FateSunk, 17 May 1943
General characteristics
Class and type Type IXC submarine
Displacement
  • 1,120  t (1,100 long tons) surfaced
  • 1,232 t (1,213 long tons) submerged
Length
Beam
  • 6.76 m (22 ft 2 in) o/a
  • 4.40 m (14 ft 5 in) pressure hull
Height9.60 m (31 ft 6 in)
Draught4.70 m (15 ft 5 in)
Installed power
  • 4,400 PS (3,200 kW; 4,300 bhp) (diesels)
  • 1,000 PS (740 kW; 990 shp) (electric)
Propulsion
Speed
  • 18.3 knots (33.9 km/h; 21.1 mph) surfaced
  • 7.3 knots (13.5 km/h; 8.4 mph) submerged
Range
  • 13,450  nmi (24,910 km; 15,480 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • 64 nmi (119 km; 74 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth230 m (750 ft)
Complement4 officers, 44 enlisted
Armament
Service record [1]
Part of:
Identification codes: M 41 096
Commanders:
Operations:
  • 6 patrols:
  • 1st patrol
  • 11 – 24 December 1941
  • 2nd patrol
  • 8 January – 23 March 1942
  • 3rd patrol
  • 25 April – 22 July 1942
  • 4th patrol
  • 2 – 10 September 1942
  • 5th patrol
  • 14 September 1942 – 15 January 1943
  • 6th patrol
  • 6 April – 17 May 1943
Victories: 12 merchant ships sunk
(83,639  GRT)

German submarine U-128 was a Type IXC U-boat of Nazi Germany's Kriegsmarine during World War II. She was sunk 17 May 1943, by American action.

Contents

Design

German Type IXC submarines were slightly larger than the original Type IXBs. U-128 had a displacement of 1,120 tonnes (1,100 long tons) when at the surface and 1,232 tonnes (1,213 long tons) while submerged. [2] The U-boat had a total length of 76.76 m (251 ft 10 in), a pressure hull length of 58.75 m (192 ft 9 in), a beam of 6.76 m (22 ft 2 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.70 m (15 ft 5 in). The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of 4,400 metric horsepower (3,240 kW; 4,340 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 metric horsepower (740 kW; 990 shp) for use while submerged. She had two shafts and two 1.92 m (6 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft). [2]

The submarine had a maximum surface speed of 18.3 knots (33.9 km/h; 21.1 mph) and a maximum submerged speed of 7.3 knots (13.5 km/h; 8.4 mph). [2] When submerged, the boat could operate for 63 nautical miles (117 km; 72 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 13,450 nautical miles (24,910 km; 15,480 mi) at 10 knots (19 km/h; 12 mph). U-128 was fitted with six 53.3 cm (21 in) torpedo tubes (four fitted at the bow and two at the stern), 22 torpedoes, one 10.5 cm (4.13 in) SK C/32 naval gun, 180 rounds, and a 3.7 cm (1.5 in) SK C/30 as well as a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of forty-eight. [2]

Service history

Ordered on 7 August 1939 from DeSchiMAG AG Weser in Bremen, U-128 was laid down on 10 July 1940, launched on 20 February 1941 and commissioned by Kapitänleutnant Ulrich Heyse on 12 May 1941.

The boat was a training vessel in the second flotilla until 30 November 1941 based in Wilhelmshaven. She was then based in Lorient.

During her six completed war patrols, U-128 sank 12 ships, for a total of 83,639 tons. On 1 March 1943 command was transferred to Kptlt. Hermann Steinert, who commanded her until her loss a few months later.

Fate

On 17 May 1943, while operating in the South Atlantic near Pernambuco, two Mariner flying boats, PBM 74-P5 and PBM-74-P6 of the US Navy Patrol Squadron VP-74, made U-128 surface with depth charges. Two US Navy destroyers (USS Jouett and Moffett) also hit her with 5-inch gunfire. The crew opened the submarine's seacocks as they abandoned ship, scuttling the submarine. The final toll was seven dead but there were 47 survivors.

Summary of raiding history

DateShip NameNationalityTonnage (GRT)Fate [3] PositionDeaths
19 February 1942 Pan Massachusetts Flag of the United States (1912-1959).svg  United States 8,202Sunk 28°27′N80°08′W / 28.450°N 80.133°W / 28.450; -80.133 20
22 February 1942 Cities Service Empire Flag of the United States (1912-1959).svg  United States 8,103Sunk 28°25′N80°02′W / 28.417°N 80.033°W / 28.417; -80.033 14
5 March 1942 O.A. Knudsen Flag of Norway.svg  Norway 11,007Sunk 26°17′N75°50′W / 26.283°N 75.833°W / 26.283; -75.833 2
13 May 1942 Denpark Civil Ensign of the United Kingdom.svg  United Kingdom 3,491Sunk 22°28′N28°10′W / 22.467°N 28.167°W / 22.467; -28.167 21
8 June 1942 South Africa Flag of Norway.svg  Norway 9,234Sunk 12°47′N49°44′W / 12.783°N 49.733°W / 12.783; -49.733 6
21 June 1942 West Ira Flag of the United States (1912-1959).svg  United States 5,681Sunk 12°28′N57°05′W / 12.467°N 57.083°W / 12.467; -57.083 1
23 June 1942 Andrea Brøvig Flag of Norway.svg  Norway 10,173Sunk 12°10′N59°10′W / 12.167°N 59.167°W / 12.167; -59.167 0
27 June 1942 Polybius Flag of the United States (1912-1959).svg  United States 7,041Sunk 10°55′N57°40′W / 10.917°N 57.667°W / 10.917; -57.667 10
8 November 1942 Maloja Flag of Norway.svg  Norway 6,400Sunk 11°58′N27°08′W / 11.967°N 27.133°W / 11.967; -27.133 2
10 November 1942 Cerinthus Civil Ensign of the United Kingdom.svg  United Kingdom 3,878Sunk 12°27′N27°45′W / 12.450°N 27.750°W / 12.450; -27.750 20
10 November 1942 Start Point Civil Ensign of the United Kingdom.svg  United Kingdom 5,293Sunk 13°12′N27°27′W / 13.200°N 27.450°W / 13.200; -27.450 2
5 December 1942 Teesbank Civil Ensign of the United Kingdom.svg  United Kingdom 5,136Sunk 03°33′N29°35′W / 3.550°N 29.583°W / 3.550; -29.583 1

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References

  1. ↑ Helgason, Guðmundur. "The Type IXC boat U-128". German U-boats of WWII - uboat.net. Retrieved 16 October 2014.
  2. 1 2 3 4 Gröner 1991, p. 68.
  3. ↑ Helgason, Guðmundur. "Ships hit by U-128". German U-boats of WWII - uboat.net. Retrieved 30 November 2009.

Bibliography

10°00′00″N35°34′59″W / 10.000°N 35.583°W / 10.000; -35.583

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