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FIGHTING SHIPS OF THE WORLD
UNITED KINGDOM
SUBMARINES
"F" submarines (F1) (3, 1915 - 1917)


Photo



  F2 1917

Ships


Name No Yard No Builder Laid down Launched Comp Fate
F1 IA0   Chatham DYd 12.1913 31.3.1915 8.1915 BU 1920
F2 IA1   White, Cowes 11.1914 7.7.1917 8/1917 sold 7.1922
F3 IA2   Thornycroft, Woolston 10.1914 19.2.1916 7.1916 BU 1920


Technical data


Displacement standard, t 
Displacement normal, t

363 / 525

Length, m

46.0

Breadth, m

4.91

Draught, m

3.23

No of shafts

2

Machinery

F1, 3: 2 Vickers diesels / 2 electric motors

F2: 2 6-cyl Nuremberg (MAN)-White diesels / 2 electric motors

Power, h. p.

900 / 400

Max speed, kts

14 / 8.75

Fuel, t

diesel oil

Endurance, nm(kts)3000(9.5) /
Armament

3 - 450 TT (2 bow, 1 stern, 6),

Complement

19

Diving depth operational, m30


Graphics


  <i>F2</i> 1917
  F2 1917


Project history

Standard Admiralty coastal design built for comparison with the 'S', 'V and 'W' types. Like them had double-hull features, and was based largely on the 'V' design, with improvements such as a stern TT. The Admiralty was most anxious to encourage the building of diesel engines, and so while F1 had the standard Vickers type, F 2 had 6-cyl Nuremberg (MAN) type built under licence by J Samuel White, but F3 reverted to the Vickers type. The battery had 12S Exide cells. F1 was ordered under the 1913-14 Programme and laid down in January 1913. F2 and F3 came under the 1914-15 Programme. Another three, F4-6 were projected in 1914 but cancelled after war broke out. Being very small these submarines saw relatively little service, apart from local defence.

Modernizations

None.

Naval service

No significant events.

F2 1917