NAVYPEDIA

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Perseus 1930

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Pandora (ex-Python)	P42 - N42		Vickers-Armstrong, Barrow	7/1928	22.8.1929	6.1930	sunk 1.4.1942
Parthian	P75 - N75		Chatham DYd	6.1928	22.6.1929	1.1931	sunk 10.8.1943
Perseus	P36 - N36		Vickers-Armstrong, Barrow	7.1928	22.5.1929	4.1930	sunk 6.12.1941
Phoenix	P96 - N96		Cammell Laird, Birkenhead	7/1928	3.10.1929	2.1931	sunk 16.7.1940
Poseidon			Vickers-Armstrong, Barrow	9/1928	21.6.1929	5.1930	collision 9.6.1931
Proteus	P29 - N29		Vickers-Armstrong, Barrow	7/1928	23.7.1929	6.1930	BU 3.1946

Technical data

Max speed, kts, kn	17.5 / 8.6
Displacement standard, t	1475
Displacement normal, t	1760 / 2040
Length, m	88.1
Breadth, m	9.12
Draught, m	4.85
No of shafts	2
Machinery	2 Admiralty diesels / 2 electric motors
Power, h. p.	4640 / 1635
Fuel, t	diesel oil 159
Endurance, nm(kts)	7050(9.2) / 62(4)
Armament	1 x 1 - 102/40 QF Mk IV, 2 x 1 - 12.7/62, 8 - 533 TT (6 bow, 2 stern, 14) Perseus: 1 x 1 - 120/40 QF Mk X, 2 x 1 - 12.7/62, 8 - 533 TT (6 bow, 2 stern, 14)
Electronic equipment	type 118 sonar
Complement	53
Diving depth operational, m	95

Standard scale images

Graphics

Project history

The further development of "O" class. The new form of a fore end called to improve seaworthiness became appreciable difference from predecessors. Also machinery power raised to 4640hp, however soon diesels were throttled down to 4340hp.

Submarines were built under 1927 Programme.

Modernizations

early 1930s, all survived: engine power was reduced to 4340 / 1635 h. p.; maximal surface speed was 17 kts

1930s, Pandora, Parthian, Phoenix, Proteus: - 1 x 1 - 102/40 QF Mk IV; + 1 x 1 - 102/40 QF Mk XII

1933, Perseus: - 1 x 1 - 120/40; + 1 x 1 - 102/40 QF Mk XII

1941 - 1942, Pandora, Parthian: were converted to cargo carriers. Spare torpedoes and part of batteries were removed, part of ballast tanks was converted to hold aviation petrol.

1943 - 1944, all survived: + 1 x 1 - 20/70 Oerlikon Mk II/IV, submarines also received ability to carry 18 M2 mines instead of torpedoes, + type 286W or type 291W radar

1/1946, Proteus: 1 x 1 - 102/40 S Mk I, 1 x 1 - 20/70 Mk II S/M, 8 - 533 TT, type 286W or type 291W radar, type 118 sonar

Naval service

Poseidon was lost in the Far East as a result of collision with Japanese merchant vessel 9.6.1931. Phoenix was sunk by DCs from Italian escort destroyer Albatros E of Sicily 16.7.1940. Perseus was sunk on a mine in Mediterranean 6.12.1941. Parthian was lost in Mediterranean 11.8.1943 (probably on a mine). Pandora was sunk 1.4.1942 by Italian aircraft in dock at Malta, she was salvaged in 1943 and handed over for broken up.