German submarine U-84 (1941)

U-52, a typical Type VIIB boat
History
Nazi Germany
Name	U-84
Ordered	9 June 1938
Builder	Flender Werke AG, Lübeck
Yard number	280
Laid down	9 November 1939
Launched	26 February 1941
Commissioned	29 April 1941
Fate	Sunk by US aircraft, 7 August 1943
General characteristics
Class and 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 and processing systems	Gruppenhorchgerät
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 × 2 cm (0.79 in) C/30 anti-aircraft gun
Service record
Part of:	1st U-boat Flotilla 29 April 1941 – 7 August 1943
Identification codes:	M 40 057
Commanders:	Oblt.z.S. / Kptlt. Horst Uphoff 29 April 1941 – 7 August 1943
Operations:	8 patrols: 1st patrol: 9 August – 22 September 1941 2nd patrol: 16 October – 18 November 1941 3rd patrol: 21 December 1941 – 7 February 1942 4th patrol: 16 March – 16 May 1942 5th patrol: 10 June – 13 August 1942 6th patrol: 29 September – 7 December 1942 7th patrol: 17 February – 4 May 1943 8th patrol: 10 June – 7 August 1943
Victories:	6 merchant ships sunk (29,905 GRT) 1 merchant ship damaged (7,176 GRT)

German submarine U-84 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II.

She was launched on 26 February 1941 and commissioned on 29 April 1941. She operated during the Battle of the Atlantic during the Second World War.