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fighting ships of the world

ROYAL NAVY - UNITED KINGDOM

SUBMARINES

PARTHIAN submarines (1930 - 1931)

Perseus 1939

Name 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

 

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

Max speed, kn

17.5 / 8.6

Fuel, t

diesel oil 159

Endurance, nm(kts)

7050(9.2) / 62(4)

Armament

8 - 533 TT (6 bow, 2 stern, 14), 1 x 1 - 102/40 QF Mk IV, 2 x 1 - 12.7/62

Perseus: 8 - 533 TT (6 bow, 2 stern, 14), 1 x 1 - 120/40 QF Mk X, 2 x 1 - 12.7/62

Sensors sonar

Complement

53

Diving depth operational, m 95

Ship project history: The further development of "O" class boats. 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 program.

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.

1/1946, Proteus: 1 x 1 - 102/40 S Mk I, 1 x 1 - 20/70 Mk II S/M, 8 - 533 TT

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 on Malta, she was salvaged in 1943 and handed over for broken up.

Perseus 1930

Ivan Gogin, 2008-15