The Océan class ironclads were a group 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. Marengo participated in the French occupation of Tunisia in 1881. Suffren was often used as the flagship for the squadron she was assigned to. She was flagship of the Cherbourg Division, the Channel Division, Mediterranean Squadron and the Northern Squadron during her career. The ships were discarded during the 1890s.