Toulon. She was again rearmed on 1 September 1870, until she was disarmed at Toulon on 1 April 1871. Foudroyante was ordered to the Baltic in 1856, but the peace intervened, so she remained at Cherbourg. She was armed on 10 June 1859, and disarmed in 1865–1867. Congrève was armed for war in 1855, and it was planned to send Congrève to the Baltic, but she did not go. She was in reserve in 1861–1865, and disarmed in 1866. Congrève was retired in 1867 and the other four in 1871. Ships in class Dévastations armour consisted of 183 plates of thick wrought iron made by Creusot Rive-de-Gier, which weighed in total . In total, the five Dévastation-class ironclad floating batteries cost 6,580,000 Francs (an average of 1,316,000 Francs each). Dévastation cost 1,146,489 Francs. References Bibliography External links Dossiers Marine, la Flotte de Napoléon III, Batteries flottantes, by Alain Clouet. Brett Manuscript History Description of the Devastation floating battery from T. B. Brett - 1855 Ironclad floating batteries Ironclad warships of the French Navy