German submarine U-848 was a Type IXD2 U-boat built for Nazi Germany's Kriegsmarine during World War II. Laid down in Bremen and commissioned on 20 February 1943, the boat was a long-range Type IX, with four bow and two stern torpedo tubes.

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U-848 under attack from a very low flying aircraft.
History
Nazi Germany
Name	U-848
Ordered	20 January 1941
Builder	AG Weser, Bremen
Yard number	1054
Laid down	6 January 1942
Launched	6 October 1942
Commissioned	20 February 1943
Motto	et quo volverunt! (and the wish!)
Fate	Sunk on 5 November 1943 (10°09′S 18°00′W)
General characteristics
Class and type	Type IXD2 submarine
Displacement	1,610 t (1,580 long tons) surfaced 1,799 t (1,771 long tons) submerged
Length	87.58 m (287 ft 4 in) o/a 68.50 m (224 ft 9 in) pressure hull
Beam	7.50 m (24 ft 7 in) o/a 4.40 m (14 ft 5 in) pressure hull
Height	10.20 m (33 ft 6 in)
Draught	5.35 m (17 ft 7 in)
Installed power	9,000 PS (6,620 kW; 8,880 bhp) (diesels) 1,000 PS (740 kW; 990 shp) (electric)
Propulsion	2 shafts 2 × diesel engines 2 × electric motors
Speed	20.8 knots (38.5 km/h; 23.9 mph) surfaced 6.9 knots (12.8 km/h; 7.9 mph) submerged
Range	12,750 nmi (23,610 km; 14,670 mi) at 10 knots (19 km/h; 12 mph) surfaced 57 nmi (106 km; 66 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	230 m (750 ft)
Complement	55 to 64
Armament	6 × torpedo tubes (four bow, two stern) 24 × 53.3 cm (21 in) torpedoes 1 × 10.5 cm (4.1 in) SK C/32 deck gun (150 rounds) 1 × 3.7 cm (1.5 in) SK C/30 2 × 2 cm (0.79 in) C/30 anti-aircraft guns
Service record[1][2]
Part of:	4th U-boat Flotilla 20 February – 31 July 1943 12th U-boat Flotilla 1 August – 5 November 1943
Identification codes:	M 50 593
Commanders:	K.Kapt. / F.Kapt. Wilhelm Rollmann 20 February – 5 November 1943
Operations:	1 patrol: 18 September – 5 November 1943
Victories:	1 merchant ship sunk (4,573 GRT)

Close

She was commanded throughout her brief service life by Korvettenkapitän Wilhelm Rollmann, who led her through her sea trials and onto her first war patrol on 18 September 1943.

German Type IXD2 submarines were considerably larger than the original Type IXs. U-848 had a displacement of 1,610 tonnes (1,580 long tons) when at the surface and 1,799 tonnes (1,771 long tons) while submerged.^[3] The U-boat had a total length of 87.58 m (287 ft 4 in), a pressure hull length of 68.50 m (224 ft 9 in), a beam of 7.50 m (24 ft 7 in), a height of 10.20 m (33 ft 6 in), and a draught of 5.35 m (17 ft 7 in). The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of 9,000 metric horsepower (6,620 kW; 8,880 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 shaft horsepower (1,010 PS; 750 kW) for use while submerged. She had two shafts and two 1.85 m (6 ft) propellers. The boat was capable of operating at depths of up to 200 metres (660 ft).^[3]

The submarine had a maximum surface speed of 20.8 knots (38.5 km/h; 23.9 mph) and a maximum submerged speed of 6.9 knots (12.8 km/h; 7.9 mph).^[3] When submerged, the boat could operate for 121 nautical miles (224 km; 139 mi) at 2 knots (3.7 km/h; 2.3 mph); when surfaced, she could travel 12,750 nautical miles (23,610 km; 14,670 mi) at 10 knots (19 km/h; 12 mph). U-848 was fitted with six 53.3 cm (21 in) torpedo tubes (four fitted at the bow and two at the stern), 24 torpedoes, one 10.5 cm (4.13 in) SK C/32 naval gun, 150 rounds, and a 3.7 cm (1.5 in) SK C/30 with 2575 rounds as well as two 2 cm (0.79 in) C/30 anti-aircraft guns with 8100 rounds. The boat had a complement of fifty-five.^[3]

U-848's first patrol was to join the Monsun Gruppe, based in the Indian Ocean. On 2 November 1943, she torpedoed and sank the unescorted 4,573 GRT British steamship Baron Semple NW of Ascension Island. All hands were lost.