German Type U 127 submarine

Type U 127 submarine was a class of U-boats built during World War I by the Kaiserliche Marine.

SM U-135 at sea
Class overview
Builders:
Operators:  Imperial German Navy
Preceded by: Type UE II
Succeeded by: Type U 139
Cost: 6,438,000 Mark
Built: 1913-1918
Building: 12
Completed: 3
General characteristics [1]
Displacement:
  • 1,160–1,221 t (1,142–1,202 long tons)(surfaced)
  • 1,527–1,649 t (1,503–1,623 long tons) (submerged)
Length:
  • 82.05–82.50 m (269 ft 2 in–270 ft 8 in) (o/a)
  • 65.15–65.57 m (213 ft 9 in–215 ft 1 in) (pressure hull)
Beam:
  • 7.54 m (24 ft 9 in) (o/a)
  • 4.83–4.85 m (15 ft 10 in–15 ft 11 in) (pressure hull)
Height: 9.46 m (31 ft)
Draught: 4.02 m (13 ft 2 in)
Installed power:
  • 2 × diesel engines, 3,255–3,452 bhp (2,427–2,574 kW) total
  • 2 × diesel generators for surface dash, 888 brake horsepower (662 kW) total
  • 2 × electric motors, 1,667 shp (1,243 kW) total
Propulsion:
  • 2 × propeller shafts
  • 2 × 1.85 m (6 ft 1 in) propellers
Speed:
  • 17 knots (31 km/h; 20 mph) (surfaced)
  • 8.1 knots (15.0 km/h; 9.3 mph) (submerged)
Range: 10,000 nmi (19,000 km; 12,000 mi) at 8 knots (15 km/h; 9.2 mph) (surfaced) 50 nmi (93 km; 58 mi) at 4.5 knots (8.3 km/h; 5.2 mph)(submerged)
Test depth: 75 m (246 ft)
Complement: 44 men
Armament:

The U-boats carried 16 torpedoes and had various arrangements of deck guns. Some had only one; others had two 15 cm (5.9 in) SK L/45 guns.

They carried a crew of 44 and had excellent seagoing abilities with a cruising range of around 10,000 nautical miles (19,000 km; 12,000 mi).

List of Type U 127 submarines

There were twelve Type U 127 submarines built for the Kaiserliche Marine between 1913 and 1918. Only five were launched before the Armistice with Germany in 1918 and were subsequently surrendered to the Allies. The unfinished boats were broken up for scrap after the war.

  • SM U-127（1913）
  • SM U-128（1913）
  • SM U-129（1913）
  • SM U-130（1913）
  • SM U-131（1914）
  • SM U-132（1914）
  • SM U-133（1915）
  • SM U-134（1916）
  • SM U-135（1917）
  • SM U-136（1917）
  • SM U-137（1918）
  • SM U-138（1918）

References

Citations
  1. Gröner 1991, pp. 15-16.

Bibliography
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.


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