History
Nazi Germany
Name	U-148
Ordered	25 September 1939
Builder	Deutsche Werke, Kiel
Yard number	277
Laid down	10 April 1940
Launched	16 November 1940
Commissioned	28 December 1940
Fate	Scuttled on 5 May 1945 at Wilhelmshaven
General characteristics
Class and type	Type IID coastal submarine
Displacement	314 t (309 long tons) surfaced 364 t (358 long tons) submerged
Length	43.97 m (144 ft 3 in) o/a 29.80 m (97 ft 9 in) pressure hull
Beam	4.92 m (16 ft 2 in) o/a 4.00 m (13 ft 1 in) pressure hull
Height	8.40 m (27 ft 7 in)
Draught	3.93 m (12 ft 11 in)
Installed power	700 PS (510 kW; 690 bhp) (diesels) 410 PS (300 kW; 400 shp) (electric)
Propulsion	2 shafts 2 × diesel engines 2 × electric motors
Speed	12.7 knots (23.5 km/h; 14.6 mph) surfaced 7.4 knots (13.7 km/h; 8.5 mph) submerged
Range	3,450 nmi (6,390 km; 3,970 mi) at 12 knots (22 km/h; 14 mph) surfaced 56 nmi (104 km; 64 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	80 m (260 ft)
Complement	3 officers, 22 men
Armament	3 × 53.3 cm (21 in) torpedo tubes 5 × torpedoes or up to 12 TMA or 18 TMB mines 1 × 2 cm (0.79 in) C/30 anti-aircraft gun
Service record[1]
Part of:	24th U-boat Flotilla 28 December 1940 – 30 September 1941 21st U-boat Flotilla 1 October 1941 – 1 March 1945 31st U-boat Flotilla 1 March – 5 May 1945
Identification codes:	M 02 030
Commanders:	Oblt.z.S. Hans-Jürgen Radke 28 December 1940 – 14 September 1941 Oblt.z.S. Eberhard Mohr 15 September 1941 – 15 January 1942 Oblt.z.S. Rudolf Heinz Franke 16 January − 19 October 1942 Oblt.z.S. Herbert Brüninghaus 20 October 1942 – 18 January 1943 Oblt.z.S. Goske von Möllendorf 19 January − 15 December 1943 Oblt.z.S. Heinz Schaeffer 30 November 1943 – 15 December 1944 Oblt.z.S. Renko Tammen 16 December 1944 - 5 May 1945
Operations:	None
Victories:	None

German submarine U-148 was a Type IID U-boat of Nazi Germany's Kriegsmarine during World War II. Her keel was laid down on 10 April 1940 by Deutsche Werke in Kiel as yard number 277. She was launched on 16 November 1940 and commissioned on 28 December with Oberleutnant zur See Hans-Jürgen Radke in command.

U-148 began her service life with the 24th U-boat Flotilla. She was then assigned to the 21st flotilla and subsequently to the 31st flotilla. She spent the war as a training vessel.

She was scuttled on 5 May 1945.

Design

German Type IID submarines were enlarged versions of the original Type IIs. U-148 had a displacement of 314 tonnes (309 long tons) when at the surface and 364 tonnes (358 long tons) while submerged. Officially, the standard tonnage was 250 long tons (254 t), however.^[2] The U-boat had a total length of 43.97 m (144 ft 3 in), a pressure hull length of 29.80 m (97 ft 9 in), a beam of 4.92 m (16 ft 2 in), a height of 8.40 m (27 ft 7 in), and a draught of 3.93 m (12 ft 11 in). The submarine was powered by two MWM RS 127 S four-stroke, six-cylinder diesel engines of 700 metric horsepower (510 kW; 690 shp) for cruising, two Siemens-Schuckert PG VV 322/36 double-acting electric motors producing a total of 410 metric horsepower (300 kW; 400 shp) for use while submerged. She had two shafts and two 0.85 m (3 ft) propellers. The boat was capable of operating at depths of up to 80–150 metres (260–490 ft).^[2]

The submarine had a maximum surface speed of 12.7 knots (23.5 km/h; 14.6 mph) and a maximum submerged speed of 7.4 knots (13.7 km/h; 8.5 mph).^[2] When submerged, the boat could operate for 35–42 nautical miles (65–78 km; 40–48 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 3,800 nautical miles (7,000 km; 4,400 mi) at 8 knots (15 km/h; 9.2 mph). U-148 was fitted with three 53.3 cm (21 in) torpedo tubes at the bow, five torpedoes or up to twelve Type A torpedo mines, and a 2 cm (0.79 in) anti-aircraft gun. The boat had a complement of 25.^[2]

Fate

The boat was scuttled in the Raederschleuse (lock) at Wilhelmshaven on 5 May 1945. The wreck was broken up on an unknown date.