P41 1941
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| P41, 1/1943- Uredd | P41 | Vickers-Armstrong, Barrow, UK | 1940 | 24/8/1941 | 12/1941 | sunk 10/2/1943 |
| Ula (ex-Varne) | P81, 1950- S300 | Vickers-Armstrong, Barrow, UK | 11/1942 | 22/1/1943 | 4/1943 | stricken 7/1964 |
|
Displacement standard, t |
540 |
|
Displacement normal, t |
630 / 732 |
|
Length, m |
60.0 |
|
Breadth, m |
4.90 |
|
Draught, m |
4.52 - 4.65 |
|
No of shafts |
2 |
|
Machinery |
2 Paxman-Ricardo or Paxman diesel-generators/ 2 electric motors |
|
Power, h. p. |
615 / 825 |
|
Max speed, kn |
11.25 / 10 |
|
Fuel, t |
diesel oil 38, later 55 |
|
Armament |
P41: 4 - 533 TT (bow, 8), 1 x 1 - 76/40 QF Mk I HA Ula: 4 - 533 TT (bow, 8 torpedoes or 6 M2 mines), 1 ?1 - 76/45 QF Mk I HA |
|
Sensors |
P41: type 286PW radar, sonars Ula: type 291W radar, sonars |
|
Complement |
33 |
| Diving depth operational, m | 60 |
Ship project history: British submarines of U class, are transferred to Norway before completing.
These submarines were originally reflected as unarmed targets for training of crews of escort ships. Already after design approval it was decided to arm them with TT. Construction of a fore end was changed for placing 4 TT in pressure hull and two more out of it, in a special fin. Single-hulled. Feature of this class that there on shafts only electric motors were and diesels used only in a role of generators. There were first British pure diesel-electric submarines.
Modernizations: 1955-1956, Ula: external streamlining, shorkel and new radar were installed.
Naval service: Uredd was lost being mined at Bodö (coast of Norway) 10/2/1943.
RN sister-ship Varangian 1946
? Ivan Gogin, 2010