G Class

Overseas Submarine
G Class Submarine

 

This class were designed in an attempt to improve the living conditions and hopefully with a capability of increased speed and extension of operational capabilities in all weather and also to operate with the Fleet.

This class was also the first to enter service with the 21 inch torpedo tube, though the Swordfish had been designed with them she did not enter service before the 'G' class. The G's were also fitted with Fessenden Underwater Sound Telegraphy.

14 Built

G1 - G5
HM Dockyard, Chatham
1914 - 1915

G6 - G7
Armstrong Whitworth
Newcastle-on-Tyne
1914 - 1916


G8 - G13
Vickers , Barrow-in-Furness
1914 - 1916

G14
Scott's, Greenock
1914 - 1917

G15
White's, Cowes, IoW
Cancelled - 1915

 

Technical Information

Displacement:
693 sf
964 sm

Length (ft):
187 oa

Breadth (ft):
22.75 oa

Draught/Height (ft):
13.25 oa

Machinery:
Vickers-Admiralty Diesel Engines 1600 hp
840 hp electric motors

Speed (kts):
14.5 sf
10.0 sm

Oil Supply (tons):
44 max

Armament:
1 x 21 inch tube (stern). 4 x 18 inch tubes
(2 bow), 2 beam. 1 x 3 inch gun.
Reloads: 2 x 21 inch , 8 x 18 inch

Range:
2,400 nm at 12 kt sf
95 nm at 3 kts sm.

Complement:
3 Officers and 28 Ratings