C Class

Coastal Submarine
Group Two

  • C Class Submarine
  • C Class Submarine
  • C Class Boats
  • C29
  • C34
  • C36
  • C37_Valetta_1916
  • C38
  • C28 and C29
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This Class represented the final development of the original Holland Class.There was an increase in size but little else changed, still no interior bulkheads and still inferior living conditions.This Class was also the last to be equipped with petrol engines, also the first British submarines to be designed with forward hydroplanes (this only applied to the boats in Group Two of the Class).

With the introduction of the 'C' class the monopoly of submarine building by Vickers was broken with six of the class being being built by the Naval Dockyard at Chatham.

With the exception of C26, C27 and C38, which had been sent to Hong Kong in 1910, this class served in Home waters until the outbreak of the Great War (1914-1918).   They were used extensively throughout the war operating from the East coast ports or Dover.

Four of this class saw service in the Baltic, having been transported by sea to Murmansk and by barge and train to Lapvik where they were reassembled.   All these boats suffered the same fate of being scuttled, 3 to save falling into the hands of the Revolutionary Russians and 1 having run aground.

20 Built

C21 - C32
Vickers, Barrow-in-Furness
1908 - 1910
C35 - C38
Vickers, Barrow-in-Furness
1908 - 1910

C19 - C20
HM Dockyard, Chatham
1907 - 1909
C33 - C34
HM Dockyard, Chatham
1907 - 1909


Technical Information

290 sf
321 sm

Length (ft):
143 oa

Breadth (ft):
13.5 oa

Draught/Height (ft):

600 hp petrol engine.
200 hp electric motor.

Speed (kts):
12 sf
6.5 sm

Fuel Supply (tons):
15.5 (Petrol)

2 x 18 inch tubes (bow)
Reloads: na

740 nm at 12 knts sf
1000 nm at 8.7 knts sm

2 officers and 14 ratings.