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. The first such ships were paddle steamers. Later on the invention of screw propulsion enabled construction of screw-powered versions of the traditional frigates, corvettes, sloops and gunboats.
HMS St Lawrence was a 102-gun first-rate ship of the line of the Royal Navy that served on Lake Ontario during the War of 1812. Built on the lake at the Royal Navy dockyard in Kingston, Ontario, she was the only Royal Navy ship of the line ever to be launched and operated entirely in fresh water. Constructed in 1814, the ship's arrival on the lake ended all naval action and St Lawrence finished the war having never gone into battle. Following the war, the vessel was laid up, eventually being sold in 1832 to private interests. The ship later sank and is now a recreational dive spot.
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.
The third HMS Dauntless was a wooden-hulled steam screw frigate, launched at Portsmouth in 1847.
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 Basilisk was a first-class paddle sloop of the Royal Navy, built at the Woolwich Dockyard and launched on 22 August 1848.
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 Merlin was the name ship of her class of three 2-gun paddle packet boats built for the Royal Navy during the 1830s. She was converted into a survey ship in 1854 and then into a gunvessel two years later. The ship was decommissioned in 1858 and was sold into commercial service in 1863.
HMS Medina was a 2-gun Merlin-class paddle packet boat built for the Royal Navy during the 1830s. The ship remained in ordinary until she was commissioned in 1848. She was converted into a survey ship in 1856 and was broken up in March 1864.
Chesma was an 84-gun ship of the line built for the Black Sea Fleet of the Imperial Russian Navy in the 1840s. Chesma carried a battery primarily consisting of tradition shot-firing guns, but she also carried four new shell-firing guns. The ship saw combat during the Crimean War at the Battle of Sinop against an Ottoman squadron in 1853, where the Russian shell guns proved to be decisive. The battle prompted Britain and France to intervene to support the Ottomans, leading the Russian fleet to withdraw to Sevastopol to avoid a battle with an Anglo-French fleet. Chesma helped to defend Sevastopol, supporting Russian ground forces during a battle in February 1855 before being disarmed to strengthen the city's defenses and then scuttled to block the harbor entrance to the Anglo-French fleet in August.
Khrabryi was the lead ship of the Khrabryi class of ships of the line built for the Black Sea Fleet of the Imperial Russian Navy in the 1840s. She saw limited service during the Crimean War in 1853–1854; storm damage prevented her from participating in the Battle of Sinop, and the Russian fleet thereafter avoided battle with the British and French fleets that intervened on behalf of the Ottoman Empire. Disarmed during the Siege of Sevastopol, she was later scuttled there to block the harbor entrance in 1855.
Sviatoslav was a Sultan Makhmud-class ship of the line built for the Imperial Russian Navy's Black Sea Fleet in the 1840s. The ship participated in the Crimean War in 1853–1855, beginning with an operation to carry reinforcements for the Imperial Russian Army stationed in the Caucasus in October 1853. Storm damage prevented her from taking part in the Battle of Sinop the next month, but the British and French intervention in the war after that battle led ultimately to Sviatoslav's loss. The Russian fleet withdrew to Sevastopol to avoid battle with the Anglo-French fleet, and during the ensuing Siege of Sevastopol, she was converted into a hospital ship and eventually scuttled in February 1855.
Iagudiil was a Sultan Makhmud-class ship of the line built for the Imperial Russian Navy's Black Sea Fleet in the 1840s. Iagudiil had an uneventful career in the 1840s, alternating between periods in commission and in reserve. She participated in the early operations of the Black Sea Fleet during the Crimean War in October 1853, but her poor condition kept her from seeing action at the Battle of Sinop. The French and British intervention after Sinop led to the Russian retreat to Sevastopol, which was then besieged from 1854 to 1855. During the siege, Iagudiil battled French and British field artillery. After the Russian defenders were defeated in August 1855, they burned the ship to prevent it from being captured by the British and French, and the wreck was later demolished in 1857.
Varna was a Sultan Makhmud-class ship of the line built for the Imperial Russian Navy's Black Sea Fleet in the late 1830s and early 1840s. The ship had an uneventful career, apart from routine peacetime operations in the 1840s, interrupted by periods in reserve. In October 1853, she helped carry soldiers to the Caucasus to strengthen the Russian position there at the start of the Crimean War. In need of repairs, she was unable to take part in the Battle of Sinop in November, and thereafter remained in Sevastopol during the siege of the city. Her crew was sent ashore to reinforce the defenses and Varna was scuttled as a blockship in 1854 to bar the harbor entrance to French and British warships.
Uriil was a Sultan Makhmud-class ship of the line built for the Imperial Russian Navy's Black Sea Fleet in the late 1830s and early 1840s. The ship had a relatively uneventful career, operating with the Black Sea Fleet in the early 1840s before being laid up in 1845; apart from brief periods of activity in 1847 and 1849, she remained out of service until 1852. After the outbreak of the Crimean War in October 1853, she joined a squadron commanded by Pavel Nakhimov, but was unable to participate in the Battle of Sinop after a storm opened leaks in her hull. In poor condition, she was removed from service and her crew was sent to help man shore batteries during the Siege of Sevastopol. Uriil was then scuttled to block the harbor entrance in 1854.
Selafail was a Sultan Makhmud-class ship of the line built for the Imperial Russian Navy's Black Sea Fleet in the late 1830s and early 1840s. The ship had a relatively uneventful career, operating with the Black Sea Fleet in the early 1840s before being laid up in 1845; apart from brief periods of activity in 1847 and 1849, she remained out of service until 1852. After the outbreak of the Crimean War in October 1853, she was slated to join a squadron commanded by Pavel Nakhimov, but storm damage prevented her from taking part in the Battle of Sinop. The ship was eventually scuttled as a blockship in 1854 during the Siege of Sevastopol.
Arkhangel Gavriil was a Sultan Makhmud-class ship of the line built for the Imperial Russian Navy's Black Sea Fleet in the late 1830s and early 1840s. The ship had a relatively uneventful career, frequently being used as a troop transport including during campaigns in the Caucasus in the early 1840s to suppress unrest in the recently-conquered territory. She saw little activity after being laid up in 1845 and was repaired in late 1853, though she did not see action during the Crimean War and was instead scuttled in September 1854.
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