German submarine U-458

German submarine U-458 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 16 October 1940 by Deutsche Werke AG, Kiel as yard number 289, launched on 4 October 1941 and commissioned on 12 December 1941 under Oberleutnant zur See Kurt Diggins.

History
Nazi Germany
Name	U-458
Ordered	16 January 1940
Builder	Deutsche Werke AG, Kiel
Yard number	289
Laid down	16 October 1940
Launched	4 October 1941
Commissioned	12 December 1941
Fate	Sunk on 22 August 1943
General characteristics
Class & 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
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	2 shafts 2 × diesel engines 2 × electric motors
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	230 m (750 ft) Crush depth: 250–295 m (820–968 ft)
Complement	4 officers, 40–56 enlisted
Armament	5 × 53.3 cm (21 in) torpedo tubes (four bow, one stern) 14 × torpedoes 1 × 8.8 cm (3.46 in) deck gun (220 rounds) 1 x 2 cm (0.79 in) C/30 AA gun
Service record[1]
Part of	8th U-boat Flotilla 12 December 1941 – 30 June 1942 3rd U-boat Flotilla 1 July – 31 October 1942 29th U-boat Flotilla 1 November 1942 – 22 August 1943
Identification codes	M 42 437
Commanders	Oblt.z.S. / Kptlt. Kurt Diggins 12 December 1941 – 22 August 1943
Operations	7 patrols: 1st patrol: 21 June – 27 August 1942 2nd patrol: 1 – 15 October 1942 3rd patrol: 26 October – 15 November 1942 4th patrol: a. 6 February – 11 March 1943 b. 19 May 1943 5th patrol: 25 – 31 May 1943 6th patrol: 21 June - 6 July 1943 7th patrol: 14 – 22 August 1943
Victories	2 merchant ships sunk (7,584 GRT)

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-458 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.^[2] 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 Siemens-Schuckert 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).^[2]

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).^[2] 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-458 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.^[2]

Service history

The boat's career began with training at 8th U-boat Flotilla on 12 December 1941, followed by active service on 1 July 1942 as part of the 3rd Flotilla where she stayed for only four months, before transferring to Mediterranean operations with 29th Flotilla on 1 November 1942.

In 7 patrols she sank two merchant ships, for a total of 7,584 gross register tons (GRT).

Wolfpacks

U-458 took part in one wolfpack, namely:

• Tümmler (1 – 11 October 1942)

Fate

U-458 was sunk on 22 August 1943 in the Mediterranean Sea in position 36°25′N 12°39′E, by depth charges from HMS Easton and the Greek destroyer Pindos. There were 8 dead and 39 survivors.

Summary of raiding history

Date	Ship Name	Nationality	Tonnage (GRT)	Fate[3]
30 June 1942	Mosfruit	Norway	2,714	Sunk
5 August 1942	Arletta	United Kingdom	4,870	Sunk

See also

• Mediterranean U-boat Campaign (World War II)