WWI U-boat Types


Type U 31

Mittel-U class


11 boats commissioned

Construction history of type U 31

 
U-boats# ShipyardWerk #Built during
U 31 - U 4111Germaniawerft, Kiel191 - 2011912 - 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.