An ironclad is a steam-propelled warship protected by iron or steel armor plates, constructed from 1859 to the early 1890s. The ironclad was developed as a result of the vulnerability of wooden warships to explosive or incendiary shells. The first ironclad battleship, Gloire, was launched by the French Navy in November 1859 – narrowly pre-empting the British Royal Navy.
HMS Warrior is a 40-gun steam-powered armoured frigate built for the Royal Navy in 1859–1861. She was the name ship of the Warrior-class ironclads. Warrior and her sister ship HMS Black Prince were the first armour-plated, iron-hulled warships, and were built in response to France's launching in 1859 of the first ocean-going ironclad warship, the wooden-hulled Gloire. Warrior conducted a publicity tour of Great Britain in 1863 and spent her active career with the Channel Squadron. Obsolescent following the 1873 commissioning of the mastless and more capable HMS Devastation, she was placed in reserve in 1875, and was "paid off" – decommissioned – in 1883.
The Warrior-class ironclads were a class of two warships built for the Royal Navy between 1859 and 1862, the first ocean-going ironclads with iron hulls ever constructed. The ships were designed as armoured frigates in response to an invasion scare sparked by the launch of the French ironclad Gloire and her three sisters in 1858. They were initially armed with a mix of rifled breech-loading and muzzle-loading smoothbore guns, but the Armstrong breech-loading guns proved unreliable and were ultimately withdrawn from service.
Kōtetsu, later renamed Azuma, was the first ironclad warship of the Imperial Japanese Navy. She was designed as an armored ram for service in shallow waters, but also carried three guns. The ship was built in Bordeaux, France, for the Confederate States Navy under the cover name Sphinx, but was sold to Denmark after sales of warships by French builders to the Confederacy was forbidden in 1863. The Danes refused to accept the ship and sold her to the Confederates which commissioned her as CSS Stonewall in 1865. The ship did not reach Confederate waters before the end of the American Civil War in April and was turned over to the United States.
HMS Valiant was the second ship of the Hector-class armoured frigates ordered by the Royal Navy in 1861. Her builders went bankrupt shortly after she was laid down, which significantly delayed her completion. After being launched in 1863, she waited a further five years to receive her guns due to supply issues. Upon being commissioned in 1868 the ship was assigned as the First Reserve guard ship for Southern Ireland, where she remained until she was decommissioned in 1885. Valiant was hulked in 1897 as part of the stoker training school HMS Indus before becoming a storeship for kite balloons during the First World War. The ship was converted to a floating oil tank in 1926 and served in that role until sold for scrap in 1956.
HMS Minotaur was the lead ship of the Minotaur-class armoured frigates built for the Royal Navy during the 1860s. They were the longest single-screw warships ever built. Minotaur took nearly four years between her launching and commissioning because she was used for evaluations of her armament and different sailing rigs.
USS New Ironsides was a wooden-hulled broadside ironclad built for the United States Navy during the American Civil War. The ship spent most of her career blockading the Confederate ports of Charleston, South Carolina, and Wilmington, North Carolina, in 1863–65. New Ironsides bombarded the fortifications defending Charleston in 1863 during the First and Second Battles of Charleston Harbor. At the end of 1864 and the beginning of 1865 she bombarded the defenses of Wilmington in the First and Second Battles of Fort Fisher.
HMS Defence was the lead ship of the Defence-class armoured frigates ordered by the Royal Navy in 1859. Upon completion in 1862 she was assigned to the Channel Fleet. The ship was paid off in 1866 to be refitted and rearmed and was briefly reassigned to the Channel Fleet when she recommissioned in 1868. Defence had short tours on the North Atlantic and Mediterranean Stations, relieving other ironclads, from 1869 to 1872 before she was refitted again from 1872 to 1874. She became guard ship on the River Shannon when she recommissioned. The ship was transferred to the Channel Fleet again in 1876 and then became guard ship on the River Mersey until 1885. Defence was placed in reserve until 1890, when she was assigned to the mechanical training school in Devonport in 1890. She was renamed Indus when the school adopted that name and served there until sold for scrap in 1935.
The Defence-class ironclads were a class of two warships built for the Royal Navy between 1859 and 1862. The ships were designed as armoured frigates in response to an invasion scare sparked by the launch of the French ironclad Gloire and her three sisters in 1858. They were initially armed with a mix of rifled breech-loading and muzzle-loading smoothbore guns, but the Armstrong breech-loading guns proved unreliable and were withdrawn from service after a few years.
HMS Hector was the lead ship of the Hector-class armoured frigates ordered by the Royal Navy in 1861. Upon completion in 1864, she was assigned to the Channel Fleet. The ship was paid off in 1867 to refit and be re-armed. Upon recommissioning in 1868, she was assigned as the guard ship of the Fleet Reserve in the southern district until 1886. She usually served as Queen Victoria's guard ship when the sovereign was resident at her vacation home on the Isle of Wight. Hector was paid off in 1886 and hulked in 1900 as a storage ship before being sold for scrap in 1905.
HMS Achilles was an armoured frigate built for the Royal Navy in the 1860s. Upon her completion in 1864 she was assigned to the Channel Fleet. The ship was paid off in 1868 to refit and be re-armed. When she recommissioned in 1869, she was assigned as the guard ship of the Fleet Reserve in the Portland District until 1874. Achilles was refitted and re-armed again in 1874 and became the guard ship of the Liverpool District in 1875. Two years later, she was rejoined the Channel Fleet before going to the Mediterranean in 1878. The ship returned to the Channel Fleet in 1880 and served until she was paid off in 1885.
The two Scorpion-class ironclads, HMS Scorpion and HMS Wivern, were ironclad warships ordered by the Confederate States Navy in 1862 and seized in 1863 by the British to prevent their delivery. This would have violated the Foreign Enlistment Act, which forbade British subjects to build or arm any ships for governments at war with governments friendly to Great Britain. The Scorpion class were masted turret ships, each with two gun turrets that were designed to mount a pair of heavy muzzle-loading guns. They were purchased for service in the Royal Navy in 1864 and served briefly with the Channel Fleet before they became guard ships at Bermuda and Hong Kong. Scorpion was sold in 1903 and sank under tow to be scrapped, while Wivern was sold for scrap in 1922.
The French ironclad Couronne ("Crown") was the first iron-hulled ironclad warship built for the French Navy in 1859–1862. She was the first such ship to be laid down, although the British armoured frigate HMS Warrior was completed first. The ship participated in the Franco-Prussian War of 1870–1871, but saw no combat. She was served as a gunnery training ship from 1885 to 1908 before she was hulked the following year and became a barracks ship in Toulon. Couronne was scrapped in 1934, over 70 years after she was completed.
Magenta was the lead ship of her class of two broadside ironclads built for the French Navy in the early 1860s. She served as flagship of the Mediterranean Squadron.
The French ironclad Invincible was the second of the three wooden-hulled Gloire-class ironclads built for the French Navy in 1858–1862. The ships of the Gloire class were classified as armoured frigates because they only had a single gun deck and their traditional disposition of guns arrayed along the length of the hull also meant that they were broadside ironclads. Invincible had an uneventful career and was deployed in North American waters during the Franco-Prussian War of 1870–71. The unseasoned timber of her hull rotted quickly and she was condemned in 1872 and scrapped in 1876.
The French ironclad Normandie was the third and last of the three wooden-hulled Gloire-class ironclads built for the French Navy in 1858–62. The ships of the Gloire class were classified as armoured frigates because they only had a single gun deck and their traditional disposition of guns arrayed along the length of the hull also meant that they were broadside ironclads. Normandie was the first ironclad to cross the Atlantic in support of the French intervention in Mexico in 1862. Although the ship was active during the Franco-Prussian War of 1870–71, she saw no action. The unseasoned timber of her hull rotted quickly; she was condemned in 1871 and subsequently scrapped.
The Danish ironclad Dannebrog was an armored frigate of the Royal Danish Navy that was originally built as an 80-gun ship-of-the-line by Andreas Schifter was launched in 1850 but was reconstructed into a steam-powered ironclad in the early 1860s. She had an uneventful career before the ship was stricken from the navy list in 1875. The ship was converted into an accommodation ship that same year and served until she became a target ship in 1896. Dannebrog was broken up in 1897.
HMS Bristol was the name ship of her class of wooden screw frigates built for the Royal Navy during the 1860s.
The Gloire-class ironclads were a group of three wooden-hulled armored frigates built for the French Navy in the late 1850s and early 1860s. Gloire, the lead ship of the class, was the first ocean-going ironclad warship to be built by any country. The ships of the Gloire class were classified as armoured frigates because they only had a single gun deck and their traditional disposition of guns arrayed along the length of the hull also meant that they were broadside ironclads.
The Erzherzog Ferdinand Max class consisted of a pair of ironclad warships—Erzherzog Ferdinand Max and Habsburg—built for the Austrian Navy in the 1860s. They were the last broadside armored frigates to be built for the Austrian Empire, and the last vessels completed to see action against the Italians at the Battle of Lissa in 1866. Intended to have been armed with new breech-loading Krupp guns, the outbreak of the Seven Weeks' War prevented the delivery of the guns, forcing the Austrian Navy to arm the ships with a battery of sixteen older 48-pounder muzzle-loading guns.
Denmark