Arethusa-class cruiser (1913)

Arethusa at speed
Class overview
Name	Arethusa class
Operators	Royal Navy  Royal Canadian Navy
Preceded by	Active class
Succeeded by	C class
Built	1912–1915
In commission	1914–1924
Completed	8
Lost	1
Scrapped	7
General characteristics (as built)
Type	Light cruiser
Displacement	3,512 long tons (3,568 t)
Length	436 ft (132.9 m) o/a
Beam	39 ft (11.9 m)
Draught	15 ft 7 in (4.75 m) (mean, deep load)
Installed power	8 × Yarrow boilers 40,000 shp (30,000 kW)
Propulsion	4 × shafts; 4 × steam turbines
Speed	28.5 kn (52.8 km/h; 32.8 mph)
Complement	270
Armament	2 × single 6 in (152 mm) guns 6 × single 4 in (102 mm) guns 1 × single 3-pdr (47 mm (1.9 in)) AA gun 2 × twin 21 in (533 mm) torpedo tubes
Armour	Waterline belt: 1–3 in (25–76 mm) Deck: 1 in (25 mm)

The Arethusa-class cruisers were a class of eight oil-fired light cruisers of the Royal Navy all ordered in September 1912, primarily for service in the North Sea. They had three funnels with the middle one somewhat larger in diameter than the others. All served in the First World War. They were found to be very cramped internally.