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.