SM UC-70

History
German Empire
Name:	UC-70
Ordered:	12 January 1916
Builder:	Blohm & Voss, Hamburg
Yard number:	286
Launched:	7 August 1916
Commissioned:	20 November 1916
Fate:	depth charged by HMS Ouse, 28 August 1918
General characteristics
Class and type:	German Type UC II submarine
Displacement:	427 t (420 long tons), surfaced 508 t (500 long tons), submerged
Length:	50.35 m (165 ft 2 in) o/a 40.30 m (132 ft 3 in) pressure hull
Beam:	5.22 m (17 ft 2 in) o/a 3.65 m (12 ft) pressure hull
Draught:	3.64 m (11 ft 11 in)
Propulsion:	2 × propeller shafts 2 × 6-cylinder, 4-stroke diesel engines, 600 PS (440 kW; 590 shp) 2 × electric motors, 620 PS (460 kW; 610 shp)
Speed:	12.0 knots (22.2 km/h; 13.8 mph), surfaced 7.4 knots (13.7 km/h; 8.5 mph), submerged
Range:	10,420 nmi (19,300 km; 11,990 mi) at 7 knots (13 km/h; 8.1 mph) surfaced 52 nmi (96 km; 60 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth:	50 m (160 ft)
Complement:	26
Armament:	6 × 100 cm (39.4 in) mine tubes 18 × UC 200 mines 3 × 50 cm (19.7 in) torpedo tubes (2 bow/external; one stern) 7 × torpedoes 1 × 8.8 cm (3.5 in) Uk L/30 deck gun
Notes:	35-second diving time
Service record
Part of:	Flandern Flotilla 22 February 1917 – 28 August 1918
Commanders:	Oblt.z.S. Werner Fürbinger 22 November 1916 – 22 June 1917 Oblt.z.S. Kurt Loch 15 April – 8 June 1918 Oblt.z.S. Karl Dobberstein 8 June – 28 August 1918
Operations:	10 patrols
Victories:	33 merchant ship sunk (27,078 GRT) 7 merchant ships damaged (27,513 GRT)

SM UC-70 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 12 January 1916 and was launched on 7 August 1916. She was commissioned into the German Imperial Navy on 20 November 1916 as SM UC-70. In ten patrols UC-70 was credited with sinking 33 ships, either by torpedo or by mines laid. On 28 August 1918, UC-70 was spotted lying submerged on the sea bottom and attacked by a Blackburn Kangaroo patrol aircraft of No. 246 Squadron RAF and then was then sunk by depth charges from the British destroyer HMS Ouse.

A German Type UC II submarine, UC-70 had a displacement of 427 tonnes (420 long tons) when at the surface and 508 tonnes (500 long tons) while submerged. She had a length overall of 50.35 m (165 ft 2 in), a beam of 5.22 m (17 ft 2 in), and a draught of 3.64 m (11 ft 11 in). The submarine was powered by two six-cylinder four-stroke diesel engines each producing 300 metric horsepower (220 kW; 300 shp) (a total of 600 metric horsepower (440 kW; 590 shp)), two electric motors producing 620 metric horsepower (460 kW; 610 shp), and two propeller shafts. She had a dive time of 48 seconds and was capable of operating at a depth of 50 metres (160 ft).

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