NAVYPEDIA

Ships

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

Technical data

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)
Electronic equipment	SD radar, SC, JK sonars
Complement	33
Diving depth operational, m	60

Standard scale images

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.