P/R Class
Parthian

Regent

 

P Class

Boats in class  6 Units - Parthian  Perseus  Poseidon  Proteus  Pandora  Phoenix
Normal displacement surfaced  1.775t
Normal displacement submerged  2.040t
Machinery  2 x Vickers Diesel
2 x electric
Maximum power Surfaced/Submerged  4.400hp/1.320hp
Speed Surfaced/Submerged  17,5 knots/9 knots
Armament  1 x 102mm L/40 gun
2 x 303 Lewis MG
Torpedeo Tubes  8 x 533mm/14 torpedoes
Length  88,8m
Beam  9,1m
Height  4,2m
Complement  56
Year of construction  1928-1931
Fate  
Builder  Parthian - Chatham Dockyard 1928-1931
Perseus Proteus Pandora Poseidon - Vickers Armstrong Barrow 1928-1930
Phoenix - Cammell Laird Birkenhead 1928-1931

R Class

Boats in class  4 Units - Rainbow  Regent  Regulus  Rover
Normal displacement surfaced  1.772t
Normal displacement submerged  2.030t
Machinery  2 x Vickers Diesel
2 x electric
Maximum power Surfaced/Submerged  4.400hp/1.320hp
Speed Surfaced/Submerged  17,5 knots/9 knots
Armament  1 x 102mm L/40 gun
2 x 303 Lewis MG
Torpedeo Tubes  8 x 533mm/14 torpedoes
Length  87,5m
Beam  9,1m
Height  4,2m
Complement  56
Year of construction  1929-1932
Fate  
Builder Rainbow - Chatham Dockyard 1929-1932
Regent Regulus Rover - Vickers Armstrong Barrow 1929-1931