NAVYPEDIA

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
U43		21	KW Danzig	1913	26.9.1914	4.1915	to United Kingdom 11.1918
U44		22	KW Danzig	1913	15.10.1914	5.1915	sunk 12.8.1917
U45		23	KW Danzig	1914	15.4.1915	10.1915	sunk 12.9.1917
U46		24	KW Danzig	1914	18.5.1915	12.1915	to Japan 11.1918 (○2潜水艦 [O2])
U47		25	KW Danzig	1914	16.8.1915	2.1916	Austrian flag 1917 (U36), scuttled 28.10.1918
U48		26	KW Danzig	1914	3.10.1915	4.1916	wrecked 24.11.1917
U49		27	KW Danzig	1914	26.11.1915	5.1916	sunk 11.9.1917
U50		28	KW Danzig	1914	31.12.1915	7.1916	sunk 31.8.1917

Technical data

Displacement standard, t
Displacement normal, t	725 / 940
Length, m	65.0
Breadth, m	6.20
Draught, m	3.74
No of shafts	2
Machinery	2 MAN diesels / 2 SSW electric motors
Power, h. p.	2000 / 1200
Max speed, kts	15.2 / 9.7
Fuel, t	diesel oil 132
Endurance, nm(kts)	11400(8) / 51(5)
Armament	U43 - 46: 1 x 1 - 88/27 TK L/30 C/08, 4 - 500 TT (2 bow, 2 stern, 6) U47 - 50: 2 x 1 - 88/27 TK L/30 C/08, 4 - 500 TT (2 bow, 2 stern, 6)
Complement	36
Diving depth operational, m	50

Project history

Medium coastal submarines of Mobilization type Project 25. Double-hulled.

Modernizations

1916, U43-46: + 1 x 1 - 88/27 TK L/30 C/08

1916-1917, all: - 2 x 1 - 88/27; + 1 x 1 - 105/43 TK L/45 C/16

Naval service

U44 was rammed by British destroyer Oracle 12.8.1917 in the North Sea. U45 was torpedoed by British submarine D7 in the English Channel 12.9.1917. Austrian U36 (ex-U47)  was scuttled by own crew at Pola 28.10.1918. U48 wrecked 24.11.1917 in the mouth of Thames. U49 was rammed by British s/s British Transport 11.9.1917 S of Ireland. U50 was mined 31.8.1917 in the North Sea.