U27 1915
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| U27 | 17 | KW Danzig | 1911 | 14.7.1913 | 5.1914 | sunk 19.8.1915 | |
| U28 | 18 | KW Danzig | 1911 | 30.8.1913 | 6.1914 | sunk 2.9.1917 | |
| U29 | 19 | KW Danzig | 1911 | 11.10.1913 | 8.1914 | sunk 18.3.1915 | |
| U30 | 20 | KW Danzig | 1911 | 15.11.1913 | 8.1914 | to United Kingdom 11.1918 |
|
Displacement standard, t |
|
|
Displacement normal, t |
675 / 867 |
|
Length, m |
64.7 |
|
Breadth, m |
6.32 |
|
Draught, m |
3.48 |
|
No of shafts |
2 |
|
Machinery |
2 MAN diesels / 2 AEG electric motors |
|
Power, h. p. |
2000 / 1200 |
|
Max speed, kts |
16.7 / 9.8 |
|
Fuel, t |
diesel oil 101 |
| Endurance, nm(kts) | 9770(8) / 85(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.
Modernizations: 1915, U27, U28: - 1 x 1 - 7.9/79; + 2 x 1 - 88/27 TK L/30 C/08
1915, U30: - 1 x 1 - 7.9/79; + 1 x 1 - 88/27 TK L/30 C/08
1917, U30: + 1 x 1 - 88/27 TK L/30 C/08
1918, U30: - 2 x 1 - 88/27; + 1 x 1 - 105/43 TK L/45 C/16
Naval service: U27 was sunk by British decoy vessel Baralong 19.8.1915 in the English Channel. U28 was sunk after explosion of torpedoed by her munition ship Olive Branch 2.9.1917 in the Arctic. U29 was rammed by British battleship Dreadnought 18.3.1915 in the North Sea. U30 accidentally sunk 22.6.1915 in the mouth of Ems, salvaged 27.8.1915 and commissioned again.
© Ivan Gogin, 2014