Steam frigates and the smaller steam corvettes, steam sloops, steam gunboats and steam schooners, were steam-powered warships that were not meant to stand in the line of battle. There were some exceptions like for example the French Napoléon class steam ship of the line was meant to stand in the line of battle, making it the world's first steam battleship. The first such ships were paddle steamers. Later on the invention of screw propulsion enabled construction of steam-powered versions of the traditional ships of the line, frigates, corvettes, sloops and gunboats.
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 Geyser was a Driver-class wooden paddle sloop of the Royal Navy constructed in 1841 and broken up in 1866.
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 Esk was a 21-gun Highflyer-class screw corvette launched on 12 June 1854 from J. Scott Russell & Co., Millwall. She saw action in the Crimean War, the Second Opium War and the Tauranga Campaign in New Zealand, and was broken up at Portsmouth in 1870.
HMS Salamander 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 when that categorization was introduced on 31 May 1844. Designed by Joseph Seaton, the Master Shipwright of Sheerness, she was initially slated to be built in Portsmouth, and was changed to Sheerness Dockyard. She was launched and completed in 1832, took part in the Second Anglo-Burmese War and was broken up in 1883.
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 Dee was the first paddle steamer ordered for the Royal Navy, designed to carry a significant armament. She was ordered on 4 April 1827 from Woolwich Dockyard. She was designed by Sir Robert Seppings, Surveyor of the Navy and modified by Oliver Lang. This vessel was considered as new construction as a previous vessel ordered as a flush deck Cherokee-class brig in 1824, had been renamed African in May 1825. She was initially classed as a steam vessel (SV), and in 1837 reclassified as a steam vessel class 2 (SV2). She was converted to a troopship in May 1842 and as a second class sloop in 1846. She was converted into a storeship in 1868. She was broken at Sheerness in 1871.
HMS Hermes was a Hermes-class wooden paddle sloop of the Royal Navy. She was built at Portsmouth Dockyard. Initially she was used as apackey vessel until her guns were upgraded. She was re-engined and lengthened in 1842 to 43. She spent time on various stations in the Empire. She participated in the storming of Rangoon during the Second Burmese War. She was sold for breaking in October 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.
HMS Volcano was a Hermes-class wooden paddle sloop of the Royal Navy. She was built at Portsmouth Dockyard. She was launched in 1836. Her first few commissions were on packet service in the Mediterranean and North American and West Indies Stations and on the anti-slavery patrol on the West Coast of Africa. In 1854 she was converted to a factory ship and served in the Baltic during the Russian War. She was sent to China during the Second Opium War as a factory ship. On her return she was assigned to Portsmouth, on Harbour Service as a stationary factory ship. She remained there until sold for breaking in 1894.
The Alecto-class steam vessels (SV3) later reclassed as Third Class Sloops, were designed by Sir William Symonds, the Surveyor of the Navy. The design was approved on 12 April 1839. Initially four vessels were ordered and completed. A fifth unit was ordered (Rattler), but was reordered as a screw propelled vessel. And a sixth unit had been ordered but was requested to be reordered to a different design. The screw driven Rattler participated in the first of three 'tug o- wars with the Alecto. The vessels all participated during the Russian War. All had gone to the breakers by the mid-1860s.
HMS Alecto was an Alecto-class sloop designed by Sir William Symonds, Surveyor of the Navy. Originally classed as a steam vessel (SV3), her classification would be changed to a Third Class Sloop. She initially served in the Mediterranean, prior to her tug of war with the Rattler. She spent her time in the Americas and mainly on the anti-slavery patrol off the west coast of Africa. She was broken in November 1865
HMS Prometheus was an Alecto-class sloop designed by Sir William Symonds, Surveyor of the Navy. Originally classed as a steam vessel (SV3), her classification would be changed to a Third Class Sloop. She initially served mainly on the west coast of Africa on the anti-slavery patrol except for a brief period on particular service in the Black Sea in late 1855. She was sold on 5 March 1863 for breaking.
HMS Polyphemus was an Alecto-class sloop designed by Sir William Symonds, Surveyor of the Navy. Originally classed as a steam vessel (SV3), her classification would be changed to a Third Class Sloop. She initially served in the Mediterranean, west coast of Africa and the Baltic. She was wrecked on the Baltic side Jutland on 29 January 1856.
HMS Scourge was a Bulldog-class sloop designed by Sir William Symonds, Surveyor of the Navy. Originally she was ordered as a Driver-class sloop, however, under Admiralty Order of 26 December 1843 she was directed to be built to a new specification. She was initially commissioned for service with the Channel Squadron before moving to the North America and West Indies Station. She then served in the Mediterranean then the west coast of Africa. Her final service was in the Mediterranean. She was broken in 1865.
HMS Bulldog was a Bulldog-class sloop designed by Sir William Symonds, Surveyor of the Navy. Originally she was ordered as a Driver-class sloop, however, under Admiralty Order of 26 December 1843 she was directed to be built to a new specification. After commissioning she sailed for the Cape of Good Hope. She then was in the Baltic Sea for the Russian War. She carried out ocean sounding for the Atlantic telegraph. She was lost while in action with the Haitians in 1865.
HMS Fury was a Bulldog-class sloop designed by Sir William Symonds, Surveyor of the Navy. She was ordered on 19 February 1844. After commissioning she sailed for the East Indies and participated in action against pirate junks near Vietnam. She then was in the Black Sea for the Crimean War followed by the Second Opium War with China. She was sold for breaking in July 1864.
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