HMS Mercury (1878)

From Wikipedia, the free encyclopedia

NameMercury
Laid down16 March 1876
Launched17 April 1878
Mercury
History
United Kingdom
NameMercury
BuilderPembroke Dockyard
Laid down16 March 1876
Launched17 April 1878
CompletedSeptember 1879
Reclassified
FateSold for scrap, 9 July 1919
General characteristics
Class & typeIris-class despatch vessel, later second-class cruiser
Displacement3,730 long tons (3,790 t)
Length315 ft (96 m)
Beam46 ft (14 m)
Draught20 ft 6 in (6.2 m)
Installed power12 boilers; 6,000 ihp (4,500 kW)
Propulsion2 × shafts; 2 × compound-expansion steam engines
Sail planBarque-rigged
Speed17 knots (31 km/h; 20 mph)
Range4,950 nmi (9,170 km; 5,700 mi) at 10 knots (19 km/h; 12 mph)
Complement275
Armament10 × 64 pdr rifled muzzle-loading (RML) guns

HMS Mercury was one of two Iris-class despatch vessels, later redesignated as second class cruiser built for the Royal Navy during the 1870s. The two ships were the first all-steel warships in the Royal Navy.

The Iris-class ships were designed as dispatch vessels and were later redesignated as second-class protected cruisers. Mercury had an overall length of 315 feet (96 m), a beam of 46 feet (14 m), and a draught of 20 feet 6 inches (6.2 m). The ships displaced 3,730 long tons (3,790 t) at normal load[1] and were the first British warships with an all-steel hull.[2] Their crew consisted of 275 officers and ratings.[1]

The Iris class was powered by a pair of horizontal four-cylinder Maudslay, Sons and Field compound-expansion steam engines, each driving one propeller shaft using steam from eight oval and four cylindrical boilers.[1] The engines were designed to produce a total of 6,000 indicated horsepower (4,500 kW) for a speed of 17 knots (31 km/h; 20 mph). Mercury reached a maximum speed of 18.57 knots (34.39 km/h; 21.37 mph) from 7,735 ihp (5,768 kW), making her the fastest warship in the world.[3] The ship carried enough coal to steam 4,950 nautical miles (9,170 km; 5,700 mi) at 10 knots (19 km/h; 12 mph).[1] Originally equipped with a light barque rig, her spars were soon removed and the class became the first "mastless cruisers".[4]

The Iris-class ships were originally armed with ten 64-pounder (6.3-inch (160 mm)) rifled muzzle-loading (RML) guns, eight on the main deck and the remaining pair on the upper deck on pivot mounts to serve as chase guns fore and aft.[1]

Construction and career

Notes

Bibliography

Related Articles

Wikiwand AI