WWI U-boat Types

Type U 31

Ocean-going diesel-powered torpedo attack boats class

Construction history of type U 31

U-boats	#	Shipyard	Werk #	Built during
U 31 - U 41	11	Germaniawerft, Kiel	191- 201	1912 - 1915

All U-boats of type U 31

Below are the 11 commissioned U-boats of this type.

U 31, U 32, U 33, U 34, U 35, U 36, U 37,
U 38, U 39, U 40 and U 41

Technical information for type U 31

Displacement: (tons)	685 (sf) 878 (sm) 971 (total)
Length: (m)	64,70 oa 52,36 ph
Beam: (m)	6,32 oa 4,05 ph
Draught: (draft)	3,56 m
Height:	7,68 m
Power: (hp)	1850 (sf) 1200 (sm)

Speed: (knots)	16,4 (sf) 9,7 (sm)
Range: (miles / knots)	8790/8 (sf) 80/5 (sm)
Torpedoes:	6 2/2 (bow / stern tubes)
Mines:	No mines carried
Deck gun:	105mm 300 rounds
Crew:	35 men
Max depth:	ca. 50 m (164 feet)

sm = submerged, sf = surfaced, ph = pressure hull,
oa = overall, hp = horsepower.