F Class
Experimental Submarine
- F Class
- F1
- F2
- F3
The 'F' Class were built to an Admiralty design for comparison with the experimental classes which had been approved a year earlier. They were double hulled and based largely on the design of the experimental 'V' Class but with an additional stern tube.
After trials F1 was given larger hydroplanes and substantial plane guards
F1 and F3 were fitted with Vickers diesels, whilst F2 was fitted with MAN diesels built under licence by Whites. These boats saw little in the way of war service apart from some local defence work and were quickly disposed of.
Five further boats F4 to F8 were cancelled after the outbreak of war.
3 Built
| Submarine | Builder | Built |
| F1 | H.M. Dockyard, Chatham | 1915 - 1917 |
| F2 | Thornycroft, Woolston. | 1915 - 1917 |
| F3 | White, Cowes, IoW | 1915 - 1917 |
Technical Information
| Displacement (tons): | 363 sf 525 sm |
| Length (Metric): | 46m |
| Breadth (Metric): | 4.9 |
| Draught/Height (Metric): | 3.2 |
| Machinery: | 2 Vickers (F2 MAN) Diesels 900hp 2 Electric Motors 400hp. Two Shafts. |
| Speed (kts): | 14.0 sf 8.75 sm |
| Oil Supply (tons): | |
| Armament: |
3 x 18
inch tubes, 2 (bow), 1 (stern). 1 x 2 pdr gun. Reloads:6. |
| Range: | |
| Complement: | 18 Officers and Ratings. |
| sm = submerged, sf = surfaced, oa = overall, hp = horsepower, na = not available. | |
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| Type: | F Class | |
| Pennant No.: | I.A0 | |
| Laid Down: | 1st December 1913. | H.M. Dockyard, Chatham. |
| Commissioned: | 14th August 1915. | Not known at present. |
| Commander: | Not known at present. | |
| Complement: | 18 | 2 Officers, 16 Ratings. |
| Service Career: | 1915-1917 1917-1918 1918-1919 |
Harwich,
Dover and Yarmouth. Portsmouth Training Duties at Campbeltown. |
| Fate: | Scrapped 1920. | |
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H.M. Submarine F.2
| Type: | F Class | |
| Pennant No.: | I.A1 | |
| Laid Down: | 30th November 1914. | White, Cowes, Isle of Wight. |
| Commissioned: | 22nd August 1917. | Lt. A. G. Cunard. |
| Commander: | 1917 1917 1918 |
Lt. A.
G. Cunard. Lt. D. Attwood. DSC. RNR. Lt.(E). O. W. Phillips |
| Complement: | 18 | 2 Officers, 16 Ratings. |
| Service Career: | 1917 1917 1918 |
8th Flotilla,
HMS Alecto, Gt. Yarmouth. Portsmouth. Campbeltown (Training). |
| Fate: | Sold July 1922. | |
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| Type: | F Class | |
| Pennant No.: | I.A2 | |
| Laid Down: | 12th October 1914. | Thornycroft, Woolston. |
| Commissioned: | July 1916. | Not known at present. |
| Commander: | Not known at present. | |
| Complement: | 18 | 2 Officers, 16 Ratings. |
| Service Career: | 1916-1917 1917-1918 |
Yarmouth. Portsmouth and Campbeltown (Training). |
| Fate: | Scrapped 1920. | |
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