NAVYPEDIA

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
UB1		239	Germaniawerft, Kiel	1914	19.1.1915	1.1915	Austrian flag 1915, to Austria-Hungary 7.1915 (U10), sunk 25.7.1918
UB2		240	Germaniawerft, Kiel	1914	18.2.1915	2.1915	discarded 2.1919
UB3		241	Germaniawerft, Kiel	1914	5.3.1915	3.1915	Austrian flag 1915 (U9), lost 5.1915
UB4		242	Germaniawerft, Kiel	1914	1915	3.1915	sunk 15.8.1915
UB5		243	Germaniawerft, Kiel	1914	1915	3.1915	discarded 2.1919
UB6		244	Germaniawerft, Kiel	1914	1915	4.1915	interned 18.3.1917, to France 1919
UB7		245	Germaniawerft, Kiel	1914	1915	5.1915	Austrian flag 1915 (U7), sunk 10.1916
UB8		246	Germaniawerft, Kiel	1914	1915	4.1915	Austrian flag 1915 (U8), to Bulgaria 5.1916 (UB8), to France 2.1919
UB9		218	Weser, Bremen	1914	6.2.1915	2.1915	discarded 2.1919
UB10		219	Weser, Bremen	1914	20.2.1915	3.1915	scuttled 5.10.1918
UB11		220	Weser, Bremen	1914	2.3.1915	3.1915	discarded 2.1919
UB12		221	Weser, Bremen	1914	2.3.1915	3.1915	sunk 19-31.8.1918
UB13		222	Weser, Bremen	1914	8.3.1915	4.1915	sunk 24.4.1916
UB14		223	Weser, Bremen	1914	23.3.1915	3.1915	Austrian flag 1915 (U26), to United Kingdom 11.1918
UB15		224	Weser, Bremen	1914	1915	4.1915	to Austria-Hungary 6.1915 (U11), BU 1919
UB16		230	Weser, Bremen	1914	26.4.1915	5.1915	sunk 10.5.1918
UB17		231	Weser, Bremen	1914	21.4.1915	5.1915	lost 3.1918

Technical data

Displacement standard, t
Displacement normal, t	UB1 - 8: 127 / 142 UB9 - 17: 127 / 141
Length, m	UB1 - 8: 28.1 UB9 - 17: 27.9
Breadth, m	3.15
Draught, m	3.03
No of shafts	1
Machinery	UB1 - 8: 1 Daimler diesel / 1 SSW electric motor UB9 - 17: 1 Körting diesel / 1 SSW electric motor
Power, h. p.	60 / 120
Max speed, kts	UB1 - 8: 6.5 / 5.5 UB9 - 17: 7.5 / 6.2
Fuel, t	UB1 - 8: diesel oil 3.5 UB9 - 17: diesel oil 3
Endurance, nm(kts)	UB1 - 8: 1650(5) / 45(4) UB9 - 17: 1500(5) / 45(4)
Armament	1 x 1 - 7.9/79, 2 - 450 TT (bow, 2)
Complement	14
Diving depth operational, m	50

Standard scale images

Project history

UB I type coastal submarines with a diving depth of 50m; single-hulled type with a diving time of 33 seconds. UB12 was converted to minelayer in 1917, with the hull lengthened to 32.0m, tonnage 147t/161t, with TT replaced by 4 100cm mine tubes and 8 mines.

Modernizations

1917, UB12: length oa became 32.0m, 147/161t; - 2 - 450 TT; + 8 mines

1917, UB14: - 1 x 1 - 7.9/79; + 1 x 1 - 37/27 RV L/30

Naval service

Many were transported by rail to Pola and Antwerp. UB1 and UB15 were so transferred and sold to the Austro-Hungarian Navy, and commissioned at Pola as U10, U11. Also served under Austrian flag UB3, UB7 and UB14; UB8 was sold to Bulgaria and came to France as a war reparation. UB3 (5/1915 lost in the Mediterranean), UB4 (gunfire of British decoy vessel Inverlyon 15.8.1915 in the North Sea), UB7 (Russian aircraft in October, 1916 in the Black Sea), UB16 (torpedo of British submarine E34 10.5.1918 in the North Sea) and UB17 (unknown cause 3.1918 in the North Sea) were lost in action; UB12 (19-31.8.1918 off Flanders coast) and UB13 (24.4.1916 off Belgian coast, mines and British decoy vessel Telesia) were mined; UB 6 was interned by Netherlands 18.3.1917 being damaged off Dutch coast by nets and became French war reparation but was scrapped. UB 10 was blown up during the German retreat from Flanders.