C4 1907
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| CC1 | Seattle Co, USA | 1912 | 3.6.1913 | 8.1914 | sold 1925 | ||
| CC2 | Seattle Co, USA | 1912 | 31.12.1913 | 8.1914 | sold 1925 |
|
Displacement standard, t |
|
|
Displacement normal, t |
313 / 373 |
|
Length, m |
CC1: 44.0 CC2: 48.0 |
|
Breadth, m |
CC1: 4.57 CC2: 4.26 |
|
Draught, m |
3.35 |
|
No of shafts |
1 |
|
Machinery |
1 16-cyl Vickers petrol engine / 1 electric motor |
|
Power, h. p. |
CC1: 600 / 240 CC2: 600 / 260 |
|
Max speed, kts |
CC1, 2: 13 / 10.2 |
|
Fuel, t |
petrol 16 |
| Endurance, nm(kts) | 740(12) / 10(7.5) |
|
Armament |
CC1: 5 - 450 TT (4 bow, 1 stern, 5) CC2: 3 - 450 TT (2 bow, 1 stern, 3) |
|
Complement |
CC1, 2: 18 |
| Diving depth operational, m | 30 |
Project history: Having built three classes of submarines the Admiralty felt confident in embarking on a large production-run from 1906. In retrospect the decision to build 38 submarines to what was essentially a small coastal design was a mistake, for it delayed the introduction of proper overseas patrol submarines. The blame rests largely with Fisher, who saw submarines as useful for harbour defence, as a substitute for minefields. However, in spite of their petrol engines and the lack of space and endurance they saw continuous war service. Six were built by Chatham DYd to ensure the Royal Dockyards' ability to keep up with progress in submarine design. Appearance was similar to the 'B' class, but without the diving planes amidships. Some were camouflaged late in the war.
Modernizations: None.
Naval service: No significant events.
© Ivan Gogin, 2015