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German submarine U-102 (1940)
Career War Ensign of Germany 1938-1945
Name: U-102
Ordered: 15 December 1937
Builder:

Germaniawerft, Kiel

Ship yard number=596
Laid down: 22 May 1939
Launched: 21 March 1940
Commissioned: 27 April 1940
Fate: Sunk south-west of Ireland on 1 July 1940, by a British warship
General characteristics
Class & type: Type VIIB U-boat
Displacement: Surfaced 753 tons tons
submerged 857 tons
Length: Overall 66.6 m
pressure hull 48.8 m
Beam: Overall 6.2 m
pressure hull 4.7 m
Draught: 4.74 m
Propulsion: Surfaced: two supercharged MAN, 6 cylinder, 4-stroke M6V 40/46 diesels totalling 2,800 - 3,200bhp(2,400 kW). Max rpm: 470-490.
Speed: Surfaced 17.9 knot (33 km/h)
submerged 8 knot (15 km/h)
Range: Surfaced: 16,095 km
submerged: 175 km
Test depth: 230 m (754 ft). Calculated crush depth: 250-295 m (820-967 ft)
Complement: 44 to 48 officers and ratings
Armament: • 5 × 53.3 cm (21 in) torpedo tubes: four bow, one stern
• 14 × torpedoes or 26 TMA mines
• 1 × 8.8 cm (3.5 in) deck gun with 220 rounds
• 1 × C30 20 mm AA
Service record
Part of: Kriegsmarine: 7th U-boat Flotilla
Commanders: Kplt. Harro von Klot-Heydenfeldt
Operations: One
22 June–1 July 1940
Victories: Two ships sunk; 5,430 GRT.

German submarine U-102 was a Type VIIB submarine of the German Kriegsmarine during World War II.

The U-boat was laid down on 22 May 1939 at the Friedrich Krupp Germaniawerft shipyard at Kiel as 'werk' 596, launched on 21 March 1940 and commissioned on 27 April under the command of Kapitänleutnant Harro von Klot-Heydenfeldt to serve with the 7th U-boat Flotilla from 27 April 1940 to 1 June for crew training and operationally until she was sunk on 1 July. She sank two Allied ships, claiming 5,430 gross register tons (GRT).

Service history[]

U-70's first and only patrol began on 22 June 1940. Having sunk the Castleton near the Orkney Islands on the 28th and the Clearton about 180 mi (290 km) west of Ushant (often known as Ouessant, an island in northwest France)[1] on 1 July, she was herself sunk on the same day as the latter ship by depth charges from a British destroyer, HMS Vansittart. 43 men died with the submarine; there were no survivors.

After the U-boat's sinking, Vansittart rescued the 26 survivors from Clearton.

Previously recorded fate[]

U-102 was originally believed to have been sunk in the Bay of Biscay due to unknown causes on or after 30 June 1940.

References[]

  1. The Times Atlas of the World - Third edition, revised 1995, ISBN 0 7230 0809 4, p. 14

See also[]

Coordinates: 48°33′N 10°26′W / 48.55°N 10.433°W / 48.55; -10.433

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