NAVYPEDIA

Photo

R1 1927

Ships

Name	No	Yard 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

Technical data

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	2 Nelseco diesels / 2 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

Standard scale images

Graphics

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.