Colossus-class ironclad

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HMS Colossus, lead ship of the class, painted in 1891, Malta
Class overview
Builders	Portsmouth Dockyard, Pembroke Dockyard
Operators	Royal Navy
Preceded by	Ajax class
Succeeded by	Admiral class
In commission	1882–1910
Completed	2
Retired	2
General characteristics
Displacement	9,420 tons
Length	325 ft (99 m) pp
Beam	68 ft (21 m)
Draught	25 ft 9 in (7.85 m)
Propulsion	2-shaft Maudslay engine, 7,488 ihp (5,584 kW)
Speed	16.5 knots (30.6 km/h)
Armament	4 × BL 12 in (305 mm) guns 5 × BL 6 in (152 mm) guns 20 smaller guns 2 × 14-inch torpedo tubes
Armour	Citadel: 14–18 inches Bulkheads: 13–16 inches Deck: 2.5–3 inches Conning Tower: 14 inches (356 mm) Turrets: 16-inch faces, 14-inch sides and rear

The Colossus-class battleships were British ironclad warships, carrying their main armament in turrets, which served in the Victorian Royal Navy from 1882. They were the first British warships to carry large rifled breech-loading main guns.