NAVYPEDIA

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
U19		13	KW Danzig	1910	10.10.1912	7.1913	to United Kingdom 11.1918
U20		14	KW Danzig	1910	18.12.1912	8.1913	wrecked 5.11.1916
U21		15	KW Danzig	1910	8.2.1913	10.1913	Austrian flag 1915 - 1917 (U36), lost 22.2.1919
U22		16	KW Danzig	1910	6.3.1913	11.1913	to United Kingdom 12.1918

Technical data

Displacement standard, t
Displacement normal, t	650 / 837
Length, m	64.2
Breadth, m	6.10
Draught, m	3.58
No of shafts	2
Machinery	2 MAN diesels / 2 AEG electric motors
Power, h. p.	1700 / 1200
Max speed, kts	15.4 / 9.5
Fuel, t	diesel oil 76
Endurance, nm(kts)	7600(8) / 80(5)
Armament	1 x 1 - 7.9/79, 4 - 500 TT (2 bow, 2 stern, 6)
Complement	35
Diving depth operational, m	50

Project history

Medium coastal submarines. Double-hulled. First diesel-powered German submarines and first armed with 50cm torpedoes.

Modernizations

late 1914, U21, 22, 1915, U19, 20: - 1 x 1 - 7.9/79; + 1 x 1 - 88/27 TK L/30 C/08

1916, all: + 1 x 1 - 88/27 TK L/30 C/08

1917, U19: - 2 x 1 - 88/27; + 1 x 1 - 105/43 TK L/45 C/16

1917, U22: - 1 x 1 - 88/27

Naval service

U20 wrecked 5.11.1916 at Jutland coast. U21 temporary was transferred to Austro-Hungarian Navy as U36 and based at Pola. She was lost by unknown cause on transfer route in the North Sea 22.2.1919.