German submarine U-102 (1940)

	U-52, a typical Type VIIB boat
History
Nazi Germany
Name	U-102
Ordered	15 December 1937
Builder	Germaniawerft, Kiel
Yard number	596
Laid down	22 May 1939
Launched	21 March 1940
Commissioned	27 April 1940
Fate	Sunk on 1 July 1940
General characteristics
Class & type	Type VIIB submarine
Displacement	753 tonnes (741 long tons) surfaced; 857 t (843 long tons) submerged;
Length	66.50 m (218 ft 2 in) o/a; 48.80 m (160 ft 1 in) pressure hull;
Beam	6.20 m (20 ft 4 in) o/a; 4.70 m (15 ft 5 in) pressure hull;
Height	9.50 m (31 ft 2 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	2 shafts; 2 × diesel engines; 2 × electric motors;
Speed	17.9 knots (33.2 km/h; 20.6 mph) surfaced; 8 knots (15 km/h; 9.2 mph) submerged;
Range	8,700 nmi (16,100 km; 10,000 mi) at 10 knots (19 km/h; 12 mph) surfaced; 90 nmi (170 km; 100 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	220 m (720 ft); Crush depth: 230–250 m (750–820 ft);
Complement	4 officers, 40–56 enlisted
Sensors &; processing systems	Gruppenhorchgerät
Armament	5 × 53.3 cm (21 in) bow torpedo tubes; 14 × torpedoes or 26 TMA mines; 1 × 8.8 cm (3.5 in) deck gun with 220 rounds; 1 × 2 cm (0.79 in) C/30 anti-aircraft gun;
Service record
Part of	7th U-boat Flotilla; 27 April – 1 July 1940;
Identification codes	M 13 990
Commanders	Kptlt. Harro von Klot-Heydenfeldt; 27 April – 1 July 1940;
Operations	1 patrol:; 22 June – 1 July 1940;
Victories	1 merchant ship sunk ; (5,219 GRT)

German submarine U-102 was a Type VIIB submarine of Nazi Germany's Kriegsmarine during World War II.

The U-boat was laid down on 22 May 1939 at the Friedrich Krupp Germaniawerft shipyard at Kiel as yard number 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 one Allied ship, claiming 5,219 gross register tons (GRT).