SM U-4 (Germany)

For other ships of the same name, see German submarine U-4.
Career (German Empire)
Name: U-4[1]
Ordered: 13 August 1907[2]
Builder: Kaiserliche Werft Danzig[2]
Cost: 1,629,000 Goldmark[1]
Yard number: DU 3[1]
Launched: 18 May 1909[2]
Commissioned: 1 July 1909[2]
Decommissioned: 27 January 1919[3]
Fate: Broken up in 1919[3]
General characteristics
Type:German Type U 3 submarine
Displacement:421 tonnes (414 long tons) surfaced
510 tonnes (500 long tons) submerged[1]
Length:51.28 m (168 ft 3 in) (o/a)
45 m (147 ft 8 in) (pressure hull)[1]
Beam:5.6 m (18 ft 4 in)[1]
Draught:3.05 m (10 ft 0 in)[1]
Propulsion:2 shafts
2 × Körting 8-cylinder two stroke paraffin motors[3] with 600 PS (590 hp)[1]
2 × Siemens-Schuckert electric motors[3] with 1,030 PS (1,020 hp)
550 rpm surfaced
600 rpm submerged[1]
Speed:11.8 knots (21.9 km/h; 13.6 mph) surfaced
9.4 knots (17.4 km/h; 10.8 mph) submerged[1]
Range:1,800 nautical miles (3,300 km; 2,100 mi) at 12 knots (22 km/h; 14 mph) surfaced
50 nautical miles (93 km; 58 mi) at 4.5 knots (8.3 km/h; 5.2 mph) submerged[1]
Test depth:30 m (98 ft 5 in)[3]
Boats and landing
craft carried:		1 dingi[3]
Armament:4 × 45 cm (18 in) torpedo tubes (2 bow, 2 stern) with 6 torpedos
1 × 5 cm (2.0 in) SK L/40 gun (from 1915)[3]
Service record
Commanders: Friedrich Lützow

SM U-4 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-4 engaged in the naval warfare and took part in the First Battle of the Atlantic.[4]

References

General
Specific
  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 Gröner, p. 27.
  2. ↑ 2.0 2.1 2.2 2.3 Rössler, p. 15.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Gröner, p. 28.
  4. ↑ "U-4". Retrieved 21 January 2010.