UB2 1916
| 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 |
|
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 |
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.
© Ivan Gogin, 2014