NAVYPEDIA

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, m	30

Graphics

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