HMS Captain (1869)

HMS Captain was a major warship built for the Royal Navy as a semi-private venture, following a dispute between the designer and the Admiralty. With wrought-iron armour, steam propulsion, and the main battery mounted in rotating armoured turrets, the ship was, at first appearance, quite innovative and formidable. However, poor design and design changes resulted in a vessel that was overweight and ultimately unstable. In terms of seaworthiness she was reported as closely comparable to the higher freeboard turret-ship HMS Monarch, but her reduced freeboard added a sense of "sluggishness". The Captain capsized in heavy seas, only five months after being commissioned, with the loss of nearly 500 lives.

History
United Kingdom
OrderedNovember 1866
BuilderLaird Brothers, Birkenhead
Laid down30 January 1867
Launched27 March 1869
CommissionedApril 1870
FateSunk; 7 September 1870
General characteristics
Displacement
  • As designed: 6,960 long tons (7,070 t)
  • As built: 7,767 long tons (7,892 t)
Length320 ft (97.54 m) pp
Beam53 ft 3 in (16.23 m)
Draught24 ft 10 in (7.57 m)
Propulsion
  • 2-shaft, reciprocating 4 cylinder horizontal trunk engine
  • 8 rectangular boilers
  • 5,400 ihp (4,000 kW)
Sail planShip rig: 37,990 sq ft (3,529 m2) of sail (max)
Speed15.25 kn (28.24 km/h; 17.55 mph) (steam power)
Complement500 crewmen and officers
Armament
  • 4 × 12-inch 25 ton muzzle loading rifles (2 × 2)
  • 2 × 7-inch 6.5 ton muzzle loading rifles (2 × 1)
Armour
  • Belt: 4–8 in (100–200 mm)
  • Turrets: 9–10 in (230–250 mm)
  • 7 in (180 mm)
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