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J Class (1915) SS Specification 

Crew :

44. To J Class (1915) SS Ships :
Displacement : 1,204 tons (1,223 tonnes) surfaced;
1,820 tons (1,849 tonnes) dived.

Dimensions :

274ft 9in x 23ft 6in x 14ft;
(83.75m x 7.1m x 4.25m).
Range : 5,000nm @12.5kts surfaced;
55nm @ 3kts submerged. (J7 - 60nm.)

Diving Depth :

?
Armament : 4 x 18in bow torpedo tubes;
2 x 18in beam torpedo tubes;
12 torpedoes carried;
1 x 3in (76mm) gun, (Later replaced by 4in (101mm) gun in some boats); 
1 x 2pdr gun.
Power plant : 3 x 1,200 bhp diesel engines;
3 x 450 ehp electric motors.

Max Speed :

19kts surfaced;
9.6kts submerged.
This page last edited - 12 December, 2012.

Copyright © Ian M King, except where otherwise indicated.