SM U-135 at sea
Class overview
Builders	AG Weser, Bremen Germaniawerft, Kiel Kaiserliche Werft, Danzig Bremer Vulkan, Vegesack
Operators	Imperial German 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 [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	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.

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.^{[citation needed]}

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).^{[citation needed]}

There were eight Type U 127 submarines built for the Kaiserliche Marine between 1913 and 1918. Only one was launched before the Armistice with Germany in 1918 and was subsequently surrendered to the Allies. The unfinished boats were broken up for scrap after the war.^{[citation needed]}

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

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