U75 1917
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| U71 | 55 | Vulcan, Hamburg | 1915 | 31.10.1915 | 12.1915 | to France 2.1919 | |
| U72 | 56 | Vulcan, Hamburg | 1915 | 31.10.1915 | 1.1916 | Austrian flag 1916 (U72), scuttled 1.11.1918 | |
| U73 | 29 | KW Danzig | 1915 | 16.6.1915 | 10.1915 | Austrian flag 1916 (U73), scuttled 30.10.1918 | |
| U74 | 30 | KW Danzig | 1915 | 10.8.1915 | 11.1915 | sunk 27.5.1916 | |
| U75 | 57 | Vulcan, Hamburg | 1915 | 30.1.1916 | 3.1916 | sunk 13.12.1917 | |
| U76 | 58 | Vulcan, Hamburg | 1915 | 12.3.1916 | 5.1916 | sunk 27.1.1917 | |
| U77 | 59 | Vulcan, Hamburg | 1915 | 9.1.1916 | 3.1916 | sunk 7.7.1916 | |
| U78 | 60 | Vulcan, Hamburg | 1915 | 27.2.1916 | 4.1916 | sunk 28.10.1918 | |
| U79 | 61 | Vulcan, Hamburg | 1915 | 9.4.1916 | 5.1916 | to France 11.1918 (Victor Réveille) | |
| U80 | 62 | Vulcan, Hamburg | 1915 | 22.4.1916 | 6.1916 | to United Kingdom 1.1919 |
|
Displacement standard, t |
|
|
Displacement normal, t |
U71, 72, 75 - 80: 755 / 832 U73, 74: 745 / 829 |
|
Length, m |
56.8 |
|
Breadth, m |
5.90 |
|
Draught, m |
U71, 72, 75 - 80: 4.86 U73, 74: 4.84 |
|
No of shafts |
2 |
|
Machinery |
U71, 72, 75, 76: 2 Benz diesels / 2 SSW electric motors U73, 74, 77 - 80: 2 Körting diesels / 2 SSW electric motors |
|
Power, h. p. |
U71, 72, 75, 76: 900 / 900 U73, 74: 800 / 800 U77 - 80 : 900 / 800 |
|
Max speed, kts |
U71, 72: 10.6 / 7.9 U73, 74: 9.6 / 7.9 U75, 76: 9.9 / 7.9 U77 - 80: 9.9 / 7.8 |
|
Fuel, t |
U71, 72, 75 - 80: diesel oil 90 U73, 74: diesel oil 82 |
|
Endurance, nm(kts) |
U71, 72, 75 - 80: 7880(7) / 83(4) U73, 74: 5480(7) / 83(4) |
|
Armament |
1 x 1 - 88/27 TK L/30 C/08, 2 - 500 TT (1 bow, 1 stern, 4), 38 mines |
|
Complement |
32 |
|
Diving depth operational, m |
50 |
Project history: UE and UE I type ocean-going minelayers. Saddle-tank type.
Modernizations: 1916-1917, U73, 79, 1918, U71, 78, 80: - 1 x 1 - 88/27; + 1 x 1 - 105/43 TK L/45 C/16
1917, U72: + 1 x 1 - 105/43 TK L/45 C/16
Naval service: U74 was sunk 27.5.1916 in the North Sea by British trawlers Searanger, Oku, Rodino and Kimberley. U75 was mined 13.12.1917 in the North Sea. U76 was rammed by Russian trawler 27.1.1917 in the Arctic. U77 was sunk by British trawlers 7.7.1916 in the North Sea. U78 was torpedoed by British submarine G2 28.10.1918 in the North Sea.
© Ivan Gogin, 2014