Havfruen 1914
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| Havmanden | H2, 1913- 3 | Whitehead, Fiume, Austria-Hungary | 23/12/1911 | 8/1912 | stricken 4/1928 | |
| Havfruen | H1, 1913- 2 | Orlogsværftet, Copenhagen | 31/8/1912 | 3/1913 | stricken 5/1932 | |
| Thetis | T1, 1913- 4 | Whitehead, Fiume, Austria-Hungary | 19/6/1912 | 11/1912 | stricken 4/1928 | |
| 2den April (ex-Triton) | 5 | Whitehead, Fiume, Austria-Hungary | 31/3/1913 | 9/1913 | stricken 1/1929 | |
| Najaden | 6 | Orlogsværftet, Copenhagen | 9/7/1913 | 12/1913 | stricken 9/1931 | |
| Nymfen | 7 | Orlogsværftet, Copenhagen | 10/2/1914 | 7/1914 | stricken 3/1932 |
|
Displacement standard, t |
|
|
Displacement normal, t |
164 / 204 |
|
Length, m |
38.8 |
|
Breadth, m |
3.60 |
|
Draught, m |
2.30 |
|
No of shafts |
1 |
|
Machinery |
6-cyl 2-stroke Fiat or MAN diesel / 2 electric motors |
|
Power, h. p. |
Havmanden, Thetis, 2den April: 430 / 270 Havfruen, Najaden, Nymfen: 450 / 275 |
|
Max speed, kts |
13 / 10 |
|
Fuel, t |
diesel oil |
| Endurance, nm(kts) | 1400 (10) / 23 (8) |
|
Armament |
2 - 450 TT (bow, 2) |
|
Complement |
10 |
| Diving depth operational, m |
Ship project history: Project was developed by Whitehead. Submarines have appeared successful, and later under their drawings similar boats for Austrian Navy were built.
Modernizations: 1917, all: + 1 x 1 - 8/80
Naval service: No significant events.
Havfruen and Najaden 1914
© Ivan Gogin, 2010