HMS Algiers was a 91-gun second rate steam and sail-powered ship of the line built for the Royal Navy during the 1850s. Completed in 1854, she served as a troopship during the Crimean War of 1854âÂÂ1855. The ship was sold for scrap in 1870.
Algiers had an overall length of and measured on the gundeck and on the keel. She had a beam of , a depth of hold of , and a deep draught of The ship displaced and had a tonnage of 3,347 tons burthen. The ship was fitted with a four-cylinder single-expansion steam engine built by William Fairbain and Sons that had been taken from the frigate . The engine was rated at 450 nominal horsepower and drove a single propeller shaft. Her boilers provided enough steam to give the engine that was good for a speed of . Her crew numbered 850 officers and ratings.
The ship's muzzle-loading, smoothbore armament consisted of thirty-two shell guns on her lower gundeck and thirty-two 32-pounder (56 cwt) guns on her upper gundeck. Between her forecastle and quarterdeck, Algiers carried twenty-six 32-pounder (42 cwt) guns and a single 68-pounder gun.
She was initially ordered from Pembroke Dockyard on 3 October 1833 as a 110-gun first rate to a design by Sir William Symonds. On 10 December 1834, the order for Algiers was changed to a 74-gun two decker, but this was changed once more to a 110-gun ship on 5 February 1839. The order was amended once more, to complete her as a 90-gun Albion-class ship of the line on 26 December 1840, and she was laid down at Plymouth Dockyard on 10 July 1843. Her designs were amended once more, and she was re-ordered on 25 April 1847. The Admiralty ordered that she be lengthened and fitted with screw propulsion while under construction on 3 August 1852. The conversion began on 27 September and Algiers was launched on 26 January 1854. The ship was commissioned on 27 May 1853 under Captain Charles Talbot and completed on 30 June 1854. Algiers served as a troopship during the Crimean War, making voyages first to the Baltic Sea and then the Black Sea.
Algiers was sold for scrap on 26 February 1870.