HSwMS Thordön (1865)
HSwMS Thordön was the second ship of the monitors, built for the Royal Swedish Navy in the mid-1860s. She was designed under the supervision of the Swedish-born inventor, John Ericsson, and built in Sweden. Thordön made one foreign visit to Russia in 1867, but remained in Swedish or Norwegian waters (at the time, Sweden and Norway were united in personal union) for the rest of her career. The ship was reconstructed between 1903 and 1905, but generally remained in reserve. She was mobilized during World War I, and sold in 1922 for conversion to a barge. Design and description The John Ericsson-class ironclads were designed to meet the need of the Swedish and Norwegian navies for small, shallow-draft armored ships capable of defending their coastal waters. The standoff between and the much larger during the Battle of Hampton Roads in early 1862 roused much interest in Sweden in this new type of warship, as it seemed ideal for coastal defense duties. John Ericsson, designer and builder of the Monitor, had been born in Sweden, although he had become an American citizen in 1848, and offered to share his design with the Swedes. In response they sent Lieutenant John Christian d'Ailly