R1 1926
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| R1, 1957- Islay | 1 | Electric Boat, Groton, USA | 12/7/1926 | 12/1926 | stricken 10/1958 | |
| R2, 1957- Casma | 2 | Electric Boat, Groton, USA | 29/3/1926 | 12/1926 | stricken 10/1958 | |
| R3, 1957- Pacocha | 3 | Electric Boat, Groton, USA | 21/4/1928 | 11/1928 | stricken 10/1958 | |
| R4, 1957- Arica | 4 | Electric Boat, Groton, USA | 10/5/1928 | 11/1928 | stricken 10/1958 |
|
Displacement standard, t |
|
|
Displacement normal, t |
576 / 755 |
|
Length, m |
54.4 pp 56.8 oa |
|
Breadth, m |
5.33 |
|
Draught, m |
4.57 |
|
No of shafts |
2 |
|
Machinery |
Nelseco diesels / electric motors |
|
Power, h. p. |
800 / 1000 |
|
Max speed, kts |
14.5 / 9.5 |
|
Fuel, t |
diesel oil |
| Endurance, nm(kts) | 8000(10) / |
|
Armament |
1 x 1 - 76/50 Mk 10, 4 - 533 TT (bow, 8) |
|
Complement |
30 |
| Diving depth operational, m | 60 |
Ship project history: First two submarines were ordered 11/4/1924, following pair 11/10/1926. Each pair cost was 3.100.000$. It was planned to build six submarines, but means for building of R5 and R6 were not assigned. As commission dates dates of arrival to Callao were signed. Medium saddle-tank-hull submarines of Holland design, close on construction to USN R class.
Modernizations: None.
Naval service: No significant events.
R1 1927
R3 1951
© Ivan Gogin, 2011