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fighting ships of the world

ROYAL NAVY - UNITED KINGDOM

SUBMARINES

THAMES submarines (1932 - 1935)

Clyde 1939

Name No Builder Laid down Launched Comp Fate
Thames F71 - N71 Vickers-Armstrong, Barrow 1/1931 26/1/1932 9/1932 sunk 23/7/1940
Severn F57 - N57 Vickers-Armstrong, Barrow 3/1933 16/1/1934 1/1935 BU 7?/1946
Clyde F12 - N12 Vickers-Armstrong, Barrow 5/1933 15/3/1934 4/1935 BU 7/1946

 

Displacement standard, t

Thames: 1830

others: 1850

Displacement normal, t

Thames: 2165 / 2680

others: 2206 / 2723

Length, m

105.2

Breadth, m

8.62

Draught, m

Thames: 4.76

others: 4.85

No of shafts

2

Machinery

2 Admiralty supercharged diesels / 2 electric motors

Power, h. p.

10000 / 2500

Max speed, kn

Thames: 22.5 / 10

others: 22 / 10

Fuel, t

Thames: diesel oil 216 - 224

others: diesel oil 202

Endurance, nm(kts)

6260(12.4) / 115(4)

Armament

Thames: 6 - 533 TT (bow; 12), 1 x 1 - 120/45 QF Mk IX, 2 x 1 - 12.7/62

others: 6 - 533 TT (bow; 12), 1 x 1 - 102/40 QF Mk XII, 2 x 1 - 12.7/62

Sensors sonar

Complement

61

Diving depth operational, m 60

Ship project history: Fleet submarines, were designed for replacement of out-of-date "K" class boats. For achievement of the high speed defined by the task at level 22kts (speed of battleships), special 5000hp diesels were designed. Big size of latter have compelled to refuse from stern TTs originally provided by the specification. In addition to main diesels 2 more 400hp diesels for battery charging were installed. Double-hulled submarines, operational diving depth was 60m, maximal 95m. Fuel tanks, arranged out of a pressure hull, were welded.

Lead Thames was built under the 1929 program of 1929. It was originally supposed to built large series of similar ships, however Admiralty had soon refused the concept of fleet submarine and instead of 20 planed has put it was limited only to three. Two serial boats, Clyde (1931 program) and Severn (1932), differed from lead ship a little: so, ballast tanks have been taken out in a hull superstructure to improve stability, and instead of 120mm there was 102mm gun.

Modernizations: 1935, Thames: - 1 x 1 - 120/45; + 1 x 1 - 102/40 QF Mk XII

1942 - 1943, Severn, Clyde: + 1 x 1 - 20/70 Oerlikon Mk II/IV, they also received ability to carry 12 M2 mines instead of torpedoes.

1/1946, Severn, Clyde: 1 x 1 - 102/40 S Mk I, 1 x 1 - 20/70 Mk IIA S/M, 6 - 533 TT

Naval service: Thames was lost on a mine at coast of Norway 3/8/1940.

Severn 1939

Ivan Gogin, 2008-15