SM U-40 (Germany)

History
German Empire
Name	U-40
Ordered	12 June 1912
Builder	Germaniawerft, Kiel
Yard number	200
Laid down	3 April 1913
Launched	22 October 1914
Commissioned	14 February 1915
Fate	Sunk 23 June 1915 off the Scottish coast. 29 dead.
General characteristics
Class and type	Type U 31 submarine
Displacement	685 t (674 long tons) (surfaced) 878 t (864 long tons) (submerged)
Length	64.70 m (212 ft 3 in) (o/a) 52.36 m (171 ft 9 in) (pressure hull)
Beam	6.32 m (20 ft 9 in) (o/a) 4.05 m (13 ft 3 in) (pressure hull)
Draught	3.56 m (11 ft 8 in)
Installed power	2 × 1,850 PS (1,361 kW; 1,825 shp) diesel engines 2 × 1,200 PS (883 kW; 1,184 shp) Doppelmodyn
Propulsion	2 × shafts 2 × 1.60 m (5 ft 3 in) propellers
Speed	16.4 knots (30.4 km/h; 18.9 mph) (surfaced) 9.7 knots (18.0 km/h; 11.2 mph) (submerged)
Range	8,790 nmi (16,280 km; 10,120 mi) at 8 knots (15 km/h; 9.2 mph) (surfaced) 80 nmi (150 km; 92 mi) at 5 knots (9.3 km/h; 5.8 mph) (submerged)
Test depth	50 m (164 ft 1 in)
Boats & landing craft carried	1 dinghy
Complement	4 officers, 31 enlisted
Armament	four 50 cm (20 in) torpedo tubes (2 each bow and stern) 6 torpedoes one 8.8 cm (3.5 in) SK L/30 deck gun
Service record
Part of:	II Flotilla Unknown start – 23 June 1915
Commanders:	Kptlt. Gerhardt Fürbringer[1] 14 February – 23 June 1915
Operations:	1 patrol
Victories:	None

SM U-40^{[Note 1]} was a German Type U 31 U-boat of the German Imperial Navy (German: Kaiserliche Marine) during World War I.

Her construction was ordered on 12 June 1912 and her keel was laid down on 3 April 1913 by Germaniawerft of Kiel. She was launched on 22 October 1914 and commissioned on 14 February 1915 under the command of Gerhardt Fürbringer. Second officer was lieutenant Rudolf Jauch (of the Jauch family).

U-40 conducted one patrol, without sinking a ship.

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