U27 1917
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| U27 | 82 | CNT, Monfalcone | 5/1916 | 19.10.1916 | 2/1917 | to Italy 1920 | |
| U28 | 83 | CNT, Monfalcone | 6/1916 | 8.1.1917 | 5/1917 | to Italy 1920 | |
| U29 | 69 | Danubius, Fiume-Bergudi | 3/1916 | 21.10.1916 | 1/1917 | to Italy 1920 | |
| U30 | 70 | Danubius, Fiume-Bergudi | 3/1916 | 27.12.1916 | 2/1917 | lost 1-2.4.1917 | |
| U31 | 71 | Danubius, Fiume-Bergudi | 7/1916 | 20.3.1917 | 4/1917 | to France 1920 | |
| U32 | 72 | Danubius, Fiume-Bergudi | 7/1916 | 11.5.1917 | 6/1917 | to Italy 1920 | |
| U40 | 84 | CNT, Monfalcone | 8/1916 | 21.4.1917 | 8/1917 | to Italy 1920 |
|
Displacement standard, t |
|
|
Displacement normal, t |
278 / 312 |
|
Length, m |
37.7 wl 36.9 pp |
|
Breadth, m |
4.37 |
|
Draught, m |
3.67 |
|
No of shafts |
2 |
|
Machinery |
2 Körting diesels / 2 SSW electric motors |
|
Power, h. p. |
300 / 280 |
|
Max speed, kts |
9 / 5.7 |
|
Fuel, t |
diesel oil 27 |
|
Endurance, nm(kts) |
4000(5) / 45(4) |
|
Armament |
1 x 1 - 75/27 G. L/30 K.16 BAG, 2 - 450 TT (bow, 4) |
|
Complement |
19 |
|
Diving depth operational, m |
50 |
Project history: Modified Austrian license-built variant of the German UB II type. Ordered on 12 October 1915, they were built at the Pola N Yd, except U29-32 which were built by Danubius, Fiume.
Modernizations: None.
Naval service: All saw active service in the latter part of the war; U30 was lost by unknown cause in the Otranto Straits 1-2.4.1917; U31 was allocated to France in 1920 and scrapped, while all the others were allocated to Italy; U27 was scrapped at Fiume, and all the others at Venice.
U27 1918
Many thanks to Wolfgang Stöhr for additional information on this page.
© Ivan Gogin, 2014