Engineering:Type U 127 submarine

SM U-135 at sea
Class overview
Builders:	AG Weser, Bremen Germaniawerft, Kiel Kaiserliche Werft, Danzig Bremer Vulkan, Vegesack
Operators:	Germany Navy
Preceded by:	Type UE II
Succeeded by:	Type U 139
Cost:	6,438,000 Mark
Built:	1913-1918
Building:	8
Completed:	0
General characteristics
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:	6 × 50 cm (19.7 in) torpedo tubes (4 bow, 2 stern) 14 × torpedoes 2 × 15 cm (5.9 in) SK L/45 deck gun

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

Design

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

• SM U-127（1913）
• SM U-128（1913）
• SM U-129（1913）
• SM U-130（1913）
• SM U-131（1914）
• （1914）
• SM U-133（1915）
• SM U-134（1916）

References

Bibliography

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

Further reading

• Rössler, Eberhard (2001). The U-boat: The evolution and technical history of German submarines. London: Cassell & Co. ISBN 0-304-36120-8.