home

fighting ships of the world

ROYAL NAVY - UNITED KINGDOM

SUBMARINES

RAINBOW submarines (1930 - 1932)

Rainbow 1932

Name No Builder Laid down Launched Comp Fate
Rainbow R16 - N16 Chatham DYd 7/1929 14/5/1930 1/1932 sunk 15/10/1940
Regent R41 - N41 Vickers-Armstrong, Barrow 6/1929 11/6/1930 11/1930 sunk 18/4/1943
Regulus R88 - N88 Vickers-Armstrong, Barrow 7/1929 11/6/1930 12/1930 sunk 6/12/1940
Rover R62 - N62 Vickers-Armstrong, Barrow 7/1929 11/6/1930 1/1931 BU 7/1946
Royalist   Beardmore, Dalmuir 1929 --- --- cancelled
Rupert   Cammell Laird, Birkenhead 1929 --- --- cancelled

 

Displacement standard, t

1475

Displacement normal, t

1763 / 2030

Length, m

87.5

Breadth, m

9.12

Draught, m

4.90

No of shafts

2

Machinery

2 Admiralty diesels / 2 electric motors

Power, h. p.

4640 / 1670

Max speed, kn

17.5 / 8.8

Fuel, t

diesel oil 158

Endurance, nm(kts)

7050(9.2) / 62(4)

Armament

8 - 533 TT (6 bow, 2 stern, 14), 1 x 1 - 120/45 QF Mk IX

Rainbow: 8 - 533 TT (6 bow, 2 stern, 14), 1 x 1 - 102/40 QF Mk XII

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 4100hp ("R" class) and 4340hp ("" class). "R" class boats had to had 120mm/45 gun instead of 102mm, therefore for it have placed more low, than on "" class, to preserve stability. CT height was decreased with the same purpose. Experience of usage of gun with separate loading on submarine has appeared unsuccessful, and in 1931, even before completion, 120mm guns have changed by 102mm with unitary cartridge. The important innovation introduced on "R" class became welded construction of fuel tanks placed out of a pressure hull.

Submarines were built under 1927 ("" class) and 1928 ("R" class) programs. Only 4 from 6 "R" were completed, order for 2 was cancelled by economic reasons.

Modernizations: early 1930s, all survived: engine power was reduced to 4100/1670hp; maximal surface speed was 17kts

1931, Regent, Regulus, Rover: - 1 x 1 - 120/40; + 1 x 1 - 102/40 QF Mk XII

1943 - 1944, Rover: + 1 x 1 - 20/70 Oerlikon Mk II/IV, she also received ability to carry 18 M2 mines instead of torpedoes.

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

Naval service: Rainbow was sunk 15/10/1940 by Italian submarine Enrico Toti in Mediterranean. Regulus was missing (most likely, was lost on a mine 6/12/1940) in Mediterranean sea. Regent was lost in Mediterranean 18/4/1943 on a mine.

Rover 1931

Ivan Gogin, 2008-15