russian monitor lava lava russian class monitor built imperial_russian_navy design based american class monitor modified suit russian engines guns construction techniques spending entire career ship active frozen little known service struck navy list converted barracks ship storage hulk mines renamed world war converted hospital ship abandoned soviets finland ship probably later scrapped description lava feet long overall beam feet draft feet displaced long tons crew numbered officers enlisted men numbered officers crewmen ship fitted cylinder horizontal direct acting steam engine built drove single propeller steam provided rectangular boilers specific information output ship engine survived ranged indicated horsepower ships class lava sea trials july reached maximum speed knots mph carried maximum long tons coal gave theoretical endurance nmi knots mph lava designed armed pair inch muzzle loading guns purchased krupp germany rifled russia project seriously delayed ship completed inch lacked penetration power necessary deal ironclads replaced license built inch muzzle loading guns guns replaced originally intended inch rifled guns wrought iron armor class monitors inch plates class ships ship entirely covered layers armor plates plates extended inches waterline armor backed wooden beam maximum thickness inches gun turret protected layers armor layers armor curved plates layers thick protected base funnel height feet deck unlike predecessors built deck armor save weight lava deck reinforced addition inch armor plates completion career construction ship began september saint_petersburg lava laid december launched june entered service september cost total double contract cost ship assigned baltic fleet completion sister ships port visit stockholm sweden july august command general admiral grand duke present american warships visited july august lava completed armored ring inches thick inches tall fitted base turret prevent splinters later armored outward curving fitted turret protect crewmen later added probably 1870s upper portion turret gun ports turret mounted light gun probably inch gun defense torpedo boats fourth gun mounted platform aft funnel hurricane deck built funnel turret probably 1870s little known ship career assigned newly formed march laid winter lava reclassified coast defense ironclad february turned port disposal july stricken august ship floating barracks observation post gunnery training lava converted storage hulk renamed april year converted floating hospital received old time abandoned soviets forced withdraw finland april according terms treaty brest later returned ship supposedly broken time existence
Russian monitor Lava