HMS Rattler was a 9-gun steam screw sloop of the Royal Navy, and one of the first British warships to be completed with screw propulsion. She was originally ordered as a paddle wheel 4-gun steam vessel from Sheerness Dockyard on 12 March 1841. She was reordered on 24 February 1842 as a propeller type 9-gun sloop from HM Royal Dockyard, Sheerness, as a new vessel. William Symonds had redesigned the ship as a screw propeller driven vessel.
HMS Vulture was one of three 6-gun, steam-powered Cyclops-class second-class paddle frigates built for the Royal Navy in the 1840s. She was initially deployed to the East Indies where she participated in actions against China and then played a minor role in the Crimean War of 1854–1855. The ship was sold for scrap in 1863.
HMS Valorous was one of two 16-gun, steam-powered Magicienne-class second-class paddle frigates built for the Royal Navy in the 1850s. Commissioned in 1853 she played a small role in the Crimean War of 1854–1855 and was sold for scrap in 1891.
HMS Ardent was a wooden Alecto-class paddle sloop, and the fourth ship of the Royal Navy to use the name. She was launched on 12 February 1841 at Chatham and spent much of her career on the West Coast of Africa engaged in anti-slavery operations. One of the ship's company, Gunner John Robarts, was awarded the Victoria Cross for the destruction of Russian food stores in the Crimean War. She was scrapped in 1865.
HMS Niger was originally slated to be built as a Sampson designed sloop; however, she was ordered as a First-Class sloop with screw propulsion on 20 February 1845 to be built at Woolwich Dockyard, along the design developed by Oliver Lang and with a hull like the Basilisk designed paddle sloops. Her armament and engine were to be like the Encounter Design building at Pembroke. A second vessel (Florentia) was ordered on 26 March 1846 but after her keel was laid at Pembroke Dockyard, her construction was suspended on 6 October 1846 then cancelled three years later, on 22 May 1849. Niger She conducted important propulsion trials, finally proving the superiority of screw propulsion and served in West Africa, the Crimea, China, the East Indies and Australia. She took part in the New Zealand wars in 1860 and was sold for breaking in 1869.
HMS Phoenix was a 6-gun steam paddle vessel of the Royal Navy, built in a dry dock at Chatham in 1832. She was reclassified as a second-class paddle sloop before being rebuilt as a 10-gun screw sloop in 1844–45. She was fitted as an Arctic storeship in 1851 and sold for breaking in 1864.
HMS Basilisk was a first-class paddle sloop of the Royal Navy, built at the Woolwich Dockyard and launched on 22 August 1848.
HMS Barracouta was the last paddle sloop built for the Royal Navy. She was built at Pembroke Dockyard and launched in 1851. She served in the Pacific theatre of the Crimean War, in the Second Opium War and in the Anglo-Ashanti wars. She paid off for the last time in 1877 and was broken up in 1881.
HMS Lizard was a Jackal-class second-class iron paddle gunvessel of the Royal Navy. She was built by Robert Napier and Sons at Govan to a design by William Symonds, the Surveyor of the Navy. She was launched in 1844, was damaged at the Anglo-French blockade of the Río de la Plata, performed fishery protection duties off Scotland and broken up in 1869.
HMS Jackal was a Jackal-class second-class iron paddle gunvessel of the Royal Navy.
The Hydra class were a class of three paddlewheel steam sloops of the British Royal Navy. They saw active service variously in the Baltic during the Crimean War, against Ottoman forces in Syria and against slavers in West Africa. Latterly, Hydra and Hecate were used for surveys in the Mediterranean, the Pacific, Australia and the Atlantic, and thus their names were re-used for the Hecla-class survey vessels in the late 20th century. Two of the classes were broken up after more than twenty-five years of service, and Hecla was sold for commercial use in 1863.
HMS Magicienne was the lead ship of her class of two 16-gun, steam-powered second-class paddle frigates built for the Royal Navy in the 1850s. Commissioned in 1853 she played a small role in the Crimean War of 1854–1855 and was sold for scrap in 1866.
HMS Encounter was ordered as a First-Class Sloop with screw propulsion on 5 February 1845 to be built at Pembroke, in accordance with the design developed by John Fincham, Master Shipwright at Portsmouth. Her armament was to consist of 8 guns. She was to have a more powerful steam engine rated at 360 nominal horsepower. In 1848 she would be altered abaft and lengthened at Deptford prior to completion. A second vessel (Harrier) was ordered on 26 March 1846 but after her keel was laid at Pembroke Dockyard, her construction was suspended on 9 September 1846 then cancelled five years later, on 4 April 1851. Encounter had her armament radically altered in 1850 and she was broken up at Devonport in 1866.
The Jackal-class gunvessel was a class of two second-class iron paddle gunvessels built for the Royal Navy in the mid 1840s. They served in the Mediterranean and South Atlantic, and latterly on fishery protection duties off Scotland.
This group of vessels were originally slated to be built to the Sampson designed steam vessel; however, the Admiralty on 9 May 1845, ordered the first pair as First-Class screw sloops to be built from a design of Sir William Symonds, Surveyor of the Navy. This design would become known as the Conflict-class sloop. These would be 10-gun vessels with 400 NHP engines. The second pair of vessels were ordered on 26 March 1846 but after their keels were laid at Pembroke Dockyard, their construction was suspended in September 1846 then cancelled five years later, on 4 April 1851. Both completed ships served in the Baltic during the Crimean war, and Desperate briefly served as a store ship to Edward Augustus Inglefield's Arctic expedition. They had both been broken up by 1865.
HMS Reynard was part of the 1847 Program, she was ordered on 25 April as a steam schooner from Deptford Dockyard with the name ‘Plumper’. The vessel was reordered on 12 August as an 8-gun sloop as designed by John Edye. She was launched in 1848, conducted anti-piracy work in Chinese waters and was wrecked near Pratas Island in the South China Sea on 31 May 1851.
The Driver class were a class of paddlewheel steam sloops of the British Royal Navy. Six Driver-class ships were ordered in 1840 and a further ten in March 1841, although only six were built. Five were ordered in 1847, but all were either built as paddle frigates or cancelled. Two wrecked in service, while the rest served until being retired and were either broken up or sold.
HMS Rhadamanthus was one of the initial steam powered vessels built for the Royal Navy. On 10 January 1831 the First Sea Lord gave orders that four paddle vessels be built to competitive designs. The vessels were to be powered by Maudslay, Son & Field steam engines, carry a schooner rig and mount one or two 10-inch shell guns. Initially classed simply as a steam vessel (SV), she was re-classed as a second-class steam sloop in 1846. Designed by Thomas Roberts, the Master Shipwright of Plymouth. She was launched and completed in 1832, She was converted into a transport in 1841 then in 1851 she was a troopship and by the 1860s she was a transport again. Her breaking was completed in February 1864.
HMS Medea was one of the initial steam-powered vessels built for the Royal Navy. On 10 January 1831 the new First Lord Sir James Graham, 2nd Baronet gave orders that four paddle vessels be built to competitive designs. The vessels were to be powered by Maudslay, Son & Field steam engines, carry a schooner rig and mount one or two 10-inch shell guns. Initially classed simply as a steam vessel (SV), she was re-classed as a second-class steam sloop when that categorization was introduced on 31 May 1844. Designed by Oliver Lang, the master shipwright of Woolwich. She was launched and completed in 1834, took part in the Syrian Coast Campaign and was broken up in 1867.
The Bulldog-class steam vessels (SV2) later reclassed as First Class Sloops, were designed by Sir William Symonds, the Surveyor of the Navy. Designed from the Driver class by Admiralty Order of 26 December 1843, the design was approved in 1844. The changes included lengthening the bow by 10 feet to provide 6 feet of extra space in the engine room. Three vessels would have a single funnel whereas Scourge would have two and be completed as a bomb vessel. In July 1844 it was queried if Fury was to be completed as a screw vessel, however, since her construction was well along she would be completed as a paddle steamer. Four vessels were ordered and completed.
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