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L Class (1917) SS Specification 

To Group 1 - Group 2 - Group 3
Group 1

Crew :

35 To L Class (1917) SS Ships :
Displacement : 891 tons surfaced;
1,074 tons dived.

Dimensions :

231ft length x 23ft 10in beam.
Range : 2,800nm @10kts surfaced;
? dived.

Diving Depth :

150ft ( L2 reached 300ft in uncontrolled dive.)
Armament : 4 x 18in torpedo tubes, bow;
2 x 18in torpedo tubes, beam;
1 x 3in AA gun (later replaced by 1 x 4in gun).
Power plant : 2 x 12 cylinder solid injection 2,400hp diesels;
2 x 1,600hp electric;
1 x 20hp auxiliary motor for slow running;
Twin shafts.

Max Speed :

17.3kts surfaced;
10.5kts dived.
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Group 2

Crew :

38 To L Class (1917) SS Ships :
Displacement : 895 tons surfaced;
1.089 tons dived.

Dimensions :

238ft 6in length x 23ft 6in beam.
Range : 2,800nm @10kts surfaced;
? dived.

Diving Depth :

150ft.
Armament : 4 x 21in torpedo tubes, bow;
2 x 18in torpedo tubes, beam;
16 mines, minelayers;
1 x 4in gun.
Power plant : 2 x 12 cylinder solid injection 2,400hp diesels;
2 x 1,600hp electric;
1 x 20hp auxiliary motor for slow running;
Twin shafts.

Max Speed :

17kts surfaced;
10.5kts dived.
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Group 3

Crew :

44 To L Class (1917) SS Ships :
Displacement : 960 tons surfaced;
1,150 tons dived.

Dimensions :

235 ft length x 23ft 6in beam.
Range : 2,800nm @10kts surfaced;
? dived.

Diving Depth :

150ft.
Armament : 6 x 21in torpedo tubes, bow;
6 reloads;
2 x 4in gun.
Power plant : 2 x 1,920hp diesels;
2 x 1,150hp electric;
Twin shafts.

Max Speed :

17.5kts surfaced;
10.5kts dived.
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This page last edited - 05 March, 2013.

Copyright © Ian M King, except where otherwise indicated.