Boadicea-class cruiser

Boadicea at anchor
Class overview
Operators	Royal Navy
Preceded by	Sentinel class
Succeeded by	Blonde class
Built	1907–1910
In commission	1909–1926
Completed	2
Scrapped	2
General characteristics (as built)
Type	Scout cruiser
Displacement	3,350 long tons (3,400 t) (normal)
Length	405 ft (123.4 m) (o/a)
Beam	41 ft 6 in (12.6 m)
Draught	14 ft (4.3 m)
Installed power	18,000 shp (13,000 kW) 12 × Yarrow boilers
Propulsion	4 × shafts 2 × Parsons steam turbine sets
Speed	25 knots (46 km/h; 29 mph)
Range	4,260 nautical miles (7,890 km; 4,900 mi) at 10 knots (19 km/h; 12 mph)
Complement	317
Armament	6 × single BL 4-inch (102 mm) guns 4 × single QF 3-pounder 47 mm (1.9 in) guns 2 × single 21-inch (533 mm) torpedo tubes
Armour	Deck: .5–1 in (13–25 mm) Conning Tower: 4 in (102 mm)

The Boadicea-class cruiser was a pair of scout cruisers built for the Royal Navy in the first decade of the 20th century. They were the first class of this type to be fitted with steam turbine machinery. Upon completion in 1909–10, the sister ships served as flotilla leaders for destroyer flotillas of the First Fleet until 1913 when they were assigned to battleship squadrons. When the First World War began in August 1914, they remained with their squadrons as the First Fleet was incorporated into the Grand Fleet, although they changed squadrons over the course of the war. Both ships were present during the Battle of Jutland in mid-1916, but neither fired a shot. They were converted into minelayers the following year and both ships laid minefields in early 1918 in addition to other missions. The sisters were reduced to reserve in 1919 and sold for scrap in 1921 and 1926.