class ironclad class ironclads group wooden armored frigates built french_navy mid late 1860s attempted blockade prussian ports baltic_sea franco prussian war participated french conquest tunisia flagship squadron assigned flagship career ships discarded 1890s design description class ironclads designed improved version class ironclads ships central battery ironclads armament concentrated amidships time french ironclad watertight iron bulkheads fitted hull like ironclads era equipped metal reinforced ram ships measured meters overall beam meters maximum draft meters displaced metric tons long tons crew numbered officers men metacentric height ships low feet propulsion class ships horizontal return connecting rod compound steam engine driving single propeller engines powered oval boilers sea trials engines produced indicated horsepower ships reached knots mph carried metric tons long tons coal allowed steam approximately nautical miles speed knots mph class ships barque rigged masts sail area square meters armament ships main armament mounted barbettes upper deck gun corner battery remaining guns battery deck barbettes original armament consisted millimeter guns barbettes battery deck millimeter millimeter guns upgraded millimeter guns barbettes millimeter battery deck commissioned later ships armed millimeter guns barbettes millimeter guns seven millimeter battery deck caliber millimeter gun fired armor piercing pound shell gun weighed long tons gun fired shell muzzle velocity credited ability penetrate nominal inches wrought iron armour muzzle armor piercing shell caliber gun weighed pounds gun weighed long tons muzzle velocity credited ability penetrate nominal inches wrought iron armour muzzle millimeter gun long weighed long tons fired pound explosive shell muzzle velocity guns fire solid shot explosive shells millimeter guns replaced millimeter guns point ships received dozen millimeter hotchkiss barrel revolving guns fired shell weighing muzzle velocity range meters rate fire rounds minute hull enable guns battery deck fire forward aft guns mounted barbettes sides hull ability fire fore aft late ships careers water millimeter torpedo tubes added armor ocean class ships complete millimeter waterline belt wrought iron sides battery armored millimeters wrought iron barbette armor millimeters thick portions sides protected millimeter iron plates says barbette armor later removed improve stability confirmed source ships service franco prussian war assigned attempted blockade prussian ports baltic recalled september ordered return afterward assigned placed reserve recommissioned service lengthy refit assigned completed ship transferred reduced reserve assigned year later training ship naval condemned running sea trials began immediately reserve recommissioned service placed reserve october ship recommissioned assigned transferred french division levant february bombarded port july french conquest tunisia remained mediterranean assigned flagship led squadron port visit reduced reserve following year sold placed reserve completed sea trials commissioned march flagship career ship flagship admiral quarters september ship assigned division participated international naval demonstration later month command vice admiral royal_navy attempt force ottoman_empire comply terms treaty berlin turn town montenegro reduced reserve recommissioned august assigned ship transferred remained paid condemned
Océan-class ironclad