Dunderberg, which is a Swedish word meaning "thunder(ing) mountain", was an ocean-going casemate ironclad of 14 guns built for the Union Navy. She resembled an enlarged, two-masted version of the Confederate casemate ironclad CSS Virginia. She was originally designed to have both gun turrets and a casemate but the turrets were deleted while the ship was still being built. Construction began in 1862, but progress was slow and she was not launched until after the end of the American Civil War in 1865.
The French ironclad Richelieu was a wooden-hulled central battery ironclad built for the French Navy in the early 1870s. She was named after the 17th century statesman Cardinal de Richelieu. The ship was the flagship of the Mediterranean Squadron for most of her career. Richelieu caught on fire in Toulon in 1880 and was scuttled to prevent her magazines from exploding. She was salvaged and, after being repaired, resumed her role as flagship. In 1886, however, the ship was placed in reserve and was eventually condemned in 1901. While being towed to the ship breakers in Amsterdam in 1911, Richelieu was caught in a storm in the Bay of Biscay and had to be cast loose from her tugboat. Nevertheless, the ship survived the storm and was recovered near the Scilly Isles from where she was towed to her final destination.
Océan was a wooden-hulled, armored frigate built for the French Navy in the mid to late 1860s and the lead ship of her class. She was commissioned in 1870 to participate in the Franco-Prussian War and was assigned to the Baltic Squadron that unsuccessfully attempted to blockade Prussian ports in the Baltic Sea. The ship later served in both the Northern and Mediterranean Squadrons before being discarded in 1894.
The French ironclad Belliqueuse was a wooden-hulled, armored corvette, built for the French Navy in the 1860s and designed as a cheap ironclad. She was the first French ironclad to sail around the world, which she did between December 1867 and May 1869. She spent the bulk of her career in the Pacific before returning to Toulon, where she was used as a target in 1886.
The French ironclad Friedland was originally intended to be an iron-hulled version of Océan-class armoured frigate built for the French Navy during the 1870s, but she was much altered during her prolonged construction. Named after the French victory at the Battle of Friedland in 1807, the ship spent the bulk of her career assigned to the Mediterranean Squadron and supported the French occupation of Tunisia in 1881. She was condemned in 1902.
The Brazilian ironclad Tamandaré was an armored gunboat built for the Imperial Brazilian Navy during the Paraguayan War in the mid-1860s. She bombarded the Paraguayan fortifications blocking access up the Paraná and Paraguay Rivers as well as bombarding Paraguayan positions in support of the Imperial Brazilian Army. The ship participated in the Passage of Humaitá in February 1868 and was badly damaged. After Tamandaré was repaired she provided fire support for the army for the rest of the war, aside from bombarding Paraguyan capital of Asunción once. The ship was assigned to the Mato Grosso Flotilla after the war. Tamandaré was decommissioned in 1879 and scrapped afterwards.
The Brazilian ironclad Brasil was an armored corvette built in France for the Brazilian Navy in the mid-1860s. Configured as a central-battery ironclad, she served during the 1864–70 War of the Triple Alliance between Brazil, Argentina and Uruguay against Paraguay.
The Pará-class monitors were a group of six wooden-hulled ironclad monitors named after Brazilian provinces and built in Brazil for the Imperial Brazilian Navy during the Paraguayan War in the late 1860s. The first three ships finished, Pará, Alagoas and Rio Grande, participated in the Passage of Humaitá in February 1868. Afterwards the remaining ships joined the first three and they all provided fire support for the army for the rest of the war. The ships were split between the newly formed Upper Uruguay and Mato Grosso Flotillas after the war. Alagoas was transferred to Rio de Janeiro in the 1890s and participated in the Fleet Revolt of 1893–94.
The Brazilian monitor Pará was the lead ship of the Pará-class river monitors built for the Brazilian Navy during the Paraguayan War in the late 1860s. Pará participated in the Passagem de Humaitá in February 1868 and provided fire support for the army for the rest of the war. The ship was assigned to the Mato Grosso Flotilla after the war. Pará was disarmed and discarded in 1884.
The Brazilian monitor Rio Grande was the second ship of the Pará-class river monitors built for the Imperial Brazilian Navy during the Paraguayan War in the late 1860s. Rio Grande participated in the Passage of Humaitá on 19 February 1868 and provided fire support for the army for the rest of the war. The ship was assigned to the Upper Uruguay flotilla after the war. Rio Grande was scrapped in 1907.
The Brazilian monitor Alagoas was the third ship of the Pará-class river monitors built for the Imperial Brazilian Navy during the Paraguayan War in the late 1860s. Alagoas participated in the Passage of Humaitá on 19 February 1868 and provided fire support for the army for the rest of the war. The ship was assigned to the Upper Uruguay flotilla after the war. Alagoas was transferred to Rio de Janeiro in the 1890s and participated in the Navy Revolt of 1893–94. The ship was scrapped in 1900.
The Brazilian monitor Piauí was the fourth ship of the Pará-class river monitors built for the Brazilian Navy during the Paraguayan War in the late 1860s. Piauí passed the fortifications at Humaitá in July 1868 and provided fire support for the army for the rest of the war. The ship was assigned to the Mato Grosso Flotilla after the war. Piauí was scrapped in 1893.
The Brazilian monitor Ceará was the fifth ship of the Pará-class river monitors built for the Brazilian Navy during the Paraguayan War in the late 1860s. Ceará arrived in Paraguay in mid-1868 and provided fire support for the army for the rest of the war. The ship was assigned to the Mato Grosso Flotilla after the war. Ceará was scrapped in 1884.
The Brazilian monitor Santa Catharina was the sixth, and last, ship of the Pará-class river monitors built for the Brazilian Navy during the Paraguayan War in the late 1860s. By the time she was completed the war was winding down and she only had one significant engagement against Paraguayan forces in 1869. The ship was assigned to the Mato Grosso Flotilla after the war. Santa Catharina sank at her moorings while under repair in 1882.
The Océan-class ironclads were a class of three wooden-hulled armored frigates built for the French Navy in the mid to late 1860s. Océan attempted to blockade Prussian ports in the Baltic Sea in 1870 during the Franco-Prussian War and Marengo participated in the French conquest of Tunisia in 1881. Suffren was often used as the flagship for the Cherbourg Division, the Channel Division, Mediterranean Squadron and the Northern Squadron during her career. The ships were discarded during the 1890s.
Marengo was a wooden-hulled, armored frigate of the Océan class, built for the French Navy in the mid to late 1860s. The ship was running her sea trials in July 1870 when the Franco-Prussian War began and was immediately placed in reserve until after the war was over. Marengo participated in the French occupation of Tunisia in 1881 and was flagship of the Northern Squadron in 1891 when it made port visits in Britain and Russia. She was sold for scrap in 1896.
Suffren was a wooden-hulled, armored frigate of the Océan class, built for the French Navy in the mid to late 1860s. Although she was laid down in 1866, the ship was not launched until 1870 and commissioned in 1876. Suffren was one of the French ships assigned to the international squadron gathered to force the Ottoman Empire to carry out its obligations under the Treaty of Berlin in 1880. The ship was paid off in 1895 and discarded two years later.
The Brazilian monitor Bahia was originally ordered by Paraguay in 1864 with the name Minerva, but was sold to Brazil when Paraguay defaulted on the payments. She participated in the 1864–70 War of the Triple Alliance between Brazil, Argentina and Uruguay against Paraguay, and took part in the Passage of Humaitá.
The Brazilian ironclad Rio de Janeiro was an armored gunboat built for the Brazilian Navy during the Paraguayan War in the mid-1860s. Like the other two gunboats she was built in Brazil and was designed as a casemate ironclad. Commissioned in April 1866, the ship did not enter combat until September, when she bombarded Paraguayan fortifications at Curuzu. Rio de Janeiro hit two mines on 2 September and rapidly sank, taking 53 of her crew with her.
The Brazilian ironclad Barroso was an armoured gunboat built for the Brazilian Navy during the Paraguayan War in the mid-1860s. Barroso bombarded Paraguayan fortifications in 1866 and 1867 a number of times before she participated in the Passagem de Humaitá in February 1868. Afterwards the ship provided fire support for the army for the rest of the war. She was assigned to the Mato Grosso Flotilla after the war. Barroso was decommissioned in 1882, but was not scrapped until 1937.
Imperial Brazilian Navy 
Empire of Brazil