Illern 1940
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| Bävern | B, Bä | Kockums, Malmö | 1918 | 5/3/1921 | 6/1921 | stricken 10/1944 |
| Illern | I, In | Örlogsvarvet Karlskrona | 1918 | 30/6/1921 | 1921 | collision 12/8/1943 |
| Uttern | U, Ut | Örlogsvarvet Karlskrona | 1918 | 25/7/1921 | 1921 | stricken 10/1944 |
|
Displacement standard, t |
429 |
|
Displacement normal, t |
472 / 650 |
|
Length, m |
57.0 |
|
Breadth, m |
5.80 |
|
Draught, m |
3.00 |
|
No of shafts |
2 |
|
Machinery |
6cyl diesels / electric motors |
|
Power, h. p. |
2100 / 520 |
|
Max speed, kn |
15.2 / 8.2 |
|
Fuel, t |
diesel oil |
|
Armament |
1 x 1 - 57/55 M89B, 4 - 450 TT (bow, 8) |
|
Complement |
28 |
| Diving depth operational, m | 30? |
Ship project history: Advanced Hajen class in which for the account of slightly increased dimensions fuel stowage and surface endurance were increased. They become outdated to the beginning of WW II.
Modernizations: none.
Naval service: Illern was lost 12/8/1943 as a result of collision with m/s Birkaland in Kalmar straight, salvaged 1/9/1943 but never repaired and sold for BU in 1944.
Uttern 1921
© Ivan Gogin, 2010