Oberon 1937
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| Oberon (ex-O1) | P21 - N21 | Chatham DYd | 3/1924 | 24.9.1926 | 8/1927 | BU 8.1945 |
|
Displacement standard, t |
1311 |
|
Displacement normal, t |
1598 / 1831 |
|
Length, m |
82.2 |
|
Breadth, m |
8.53 |
|
Draught, m |
4.72 |
|
No of shafts |
2 |
|
Machinery |
2 Admiralty diesels / 2 electric motors |
|
Power, h. p. |
2950 / 1350 |
|
Max speed, kn |
13.75 / 7.5 |
|
Fuel, t |
diesel oil 160 |
|
Endurance, nm(kts) |
5000(9.5) / 60(4) |
|
Armament |
1 x 1 - 102/40 QF Mk IV, 8 - 533 TT (6 bow, 2 stern, 16) |
| Sensors | type 116 sonar |
|
Complement |
54 |
| Diving depth operational, m | 60 |
Project history: Design of "O" class submarines was developed on the basis of "L" class. New ships intended for service on the Far East and so they required increased endurance and improved seaworthiness in comparison with prototype. Lead Oberon had saddle-tank construction and was built under the 1923 Programme, operational diving depth was 60 m, maximal was 155 m. Oil fuel tanks were outside of a pressure hull and were leaked at big depth. It was possible to be saved of this lack during repair, when riveted tanks were been replaced by welded (also fuel stowage has increased to 186t). Designed speed was 15/9kts, but it has not been even reached. Oberon became the first British submarine with sonar provided even at designing.
Modernizations: 1930s: - 1 x 1 - 102/40 QF Mk IV; + 1 x 1 - 102/40 QF Mk XII
1930s: riveted fuel tanks were replaced by welded ones, fuel stowage rose up to 186 t.
1942 - 1943: + 1 x 1 - 20/70 Oerlikon Mk II/IV, type 286W or type 291W radar
Naval service: Submarine was laid up in 1944.
© Ivan Gogin, 2008-10