Parthian-class submarine

The Parthian-class submarine or P class was a class of six submarines built for the Royal Navy in the late 1920s. They were designed as long-range patrol submarines for the Far East. These boats were almost identical to the Odin class, the only difference being a different bow shape.

HMS Phoenix, 1939
Class overview
Name	Parthian class
Operators	Royal Navy
Preceded by	Odin class
Succeeded by	Rainbow class
In commission	1929–1946
Completed	6
Lost	5
General characteristics [1]
Type	Submarine
Displacement	1,760 long tons (1,788 t) surfaced 2,040 long tons (2,073 t) submerged
Length	289 ft (88 m)
Beam	30 ft (9.1 m)
Draught	16 ft (4.9 m)
Propulsion	Diesel-electric 2 × Admiralty diesel engines, 4,640 hp (3,460 kW) 2 × electric motors, 1,635 hp (1,219 kW) 2 shafts
Speed	17.5 knots (20.1 mph; 32.4 km/h) surfaced 8.6 kn (9.9 mph; 15.9 km/h) submerged
Complement	53
Armament	8 × 21 in (533 mm) torpedo tubes (6 bow, 2 stern) with 14 reloads 1 × QF 4 in (102 mm) Mk XII deck gun After 1942 : 2 × 20 mm Oerlikon cannons Equipped to lay mines through torpedo tubes

Boats

Construction data

Name	Builder	Launched	Fate
Pandora (ex-Python)	Vickers, Barrow	22 August 1929	Sunk by Italian aircraft in harbour at Valletta, Malta, 1 April 1942; Raised but not repaired, September 1943; Hulk scrapped, 1955
Parthian	Chatham Dockyard	22 June 1929	Lost in the Adriatic, presumed mined, 6 August – 11 August 1943
Perseus	Vickers, Barrow	22 May 1929	Mined in the Ionian Sea between the islands of Kefallonia and Zakynthos off the west coast of Greece, 6 December 1941
Phoenix	Cammell Laird	3 October 1929	Presumed sunk in depth charge attack by the Italian torpedo boat Albatros off the coast of Sicily, 16 July 1940
Poseidon	Vickers, Barrow	21 June 1929	Sank in accidental collision with a merchant steamer, 9 June 1931; Wreck alleged to have been salvaged by China during 1970s[2]
Proteus	Vickers, Barrow	23 July 1929	Scrapped at Troon, March 1946