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S (Swordfish) Class (1932) SS Specification 

To Group 1(Swordfish Class)  - Group 2(Shark Class) - Group 3(Seraph Class)
Group 1 - Swordfish Class (1932)

Crew :

38 To S Class (1932) SS Ships :
Displacement : 730 tons surfaced;
927 tons dived.

Dimensions :

202ft 5in length x 23ft 10in beam.
Range : 3,700nm @ 10kts surfaced;
range dived unknown.

Diving Depth :

300ft.
Armament : 6 x 21in bow torpedo tubes;
6 reloads or 12 M2 mines;
1 x 3in deck gun;
1 x 20mm Oerlikon gun added to some hulls during refit in 1944.
Power plant : 2 x diesel 1,550hp;
2 x electric 1,300hp;
Twin screws.

Max Speed :

13.5kts surfaced;
10kts dived.
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Group 2 - Shark Class (1933)

Crew :

40 To S Class (1932) SS Ships :
Displacement : 768 tons surfaced;
960 tons dived.

Dimensions :

208ft length x 23ft 10in beam.
Range : 3,800nm @ 10kts surfaced;
range dived unknown.

Diving Depth :

300ft.
Armament : 6 x 21in bow torpedo tubes;
6 reloads or 12 M2 mines;
1 x 3in deck gun;
1 x 20mm Oerlikon gun added to some hulls during refit in 1944.
Power plant : 2 x diesel 1,550hp;
2 x electric 1,300hp;
Twin screws.

Max Speed :

13.5kts surfaced;
10kts dived.
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Group 3 - Seraph Class (1942)

Crew :

49 To S Class (1932) SS Ships :
Displacement : 865 tons surfaced;
990 tons dived.

Dimensions :

216ft 10in length x 23ft 7in beam.
Range : 6,000nm @ 10kts surfaced;
range dived unknown.

Diving Depth :

300ft.
Armament : 7 x 21in torpedo tubes;
(6 bow, 1 stern);
1 x 4in deck gun;
20mm Oerlikon AA gun in some hulls.
Power plant : 2 x diesel 1,900hp;
2 x electric 1,440hp;
Twin Screws.

Max Speed :

14.5kts surfaced;
9kts dived.
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Note: For Group 3 boats the specs varied over the build period, but the figures above cover the majority.
This page last edited - 28 January, 2013.

Copyright Ian M King, except where otherwise indicated.