P512 1942
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| P511 (ex-R3) | P511 | 284 | Fore River, Quincy, USA | 12.1917 | 18.1.1919 | 4.1919 // 1.1941 | to USA 12.1944 (R3) |
| P512 (ex-R17) | P512 | 175 | Union Iron Wks, San Francisco, USA | 5.1917 | 24.12.1917 | 8.1918 // 3.1942 | to USA 9.1944 (R17) |
| P514 (ex-R19) | P514 | 177 | Union Iron Wks, San Francisco, USA | 6.1917 | 28.1.1918 | 10.1918 // 3.1942 | collision 21.6.1942 |
|
Displacement standard, t |
480 |
|
Displacement normal, t |
569 / 680 |
|
Length, m |
56.8 |
|
Breadth, m |
5.20 |
|
Draught, m |
4.00 |
|
No of shafts |
2 |
|
Machinery |
2 diesels / 2 electric motors |
|
Power, h. p. |
1200 / 940 |
|
Max speed, kts |
13.5 / 10.5 |
|
Fuel, t |
diesel oil 75 |
|
Endurance, nm(kts) |
3700(10) / |
|
Armament |
1 x 1 - 76/50 Mk 6 or 1 x 1 - 12.7/90, 4 - 533 TT (bow, 8) |
| Sensors | SD radar, SC, JK sonars |
|
Complement |
33 |
|
Diving depth operational, m |
60 |
Project history: Ex-US submarines, taken by lend-lease. Development of "O" class submarines with larger torpedo calibre (533mm), 20 boats of the first group (R1-R20) built under Holland design. Saddle-tank.
Modernizations: None.
Naval service: P514 was lost 21.6.1942 in Atlantic. Two remaining were formally returned the USA in 1944, but handed over on demolition in Britain.
Many thanks to Wolfgang Stöhr for additional information on this page.
© Ivan Gogin, 2008-10