class ironclad class ironclads pair armoured frigates built royal_navy 1860s completed assigned channel_fleet began refit builder went bankrupt delayed launching year ship wait years receive guns commissioned ships assigned paid mobilized russo turkish war saw action late 1890s assigned shore establishments scrapped converted floating oil tank sold scrap design description class ironclads like immediate predecessors defence class designed smaller cheaper versions warrior class armoured frigates modified versions defence class additional armour powerful engines ships feet inches long perpendiculars beam feet inches draft feet inches long tons overweight displaced long tons hull subdivided watertight transverse bulkheads compartments double underneath engine boiler rooms ships designed low centre gravity metacentric height feet inches rolled badly ships crew officers enlisted men propulsion class ships cylinder horizontal return connecting rod steam engine driving single foot propeller boilers provided steam engine working pressure psi kpa cm2 engine produced total indicated horsepower sea trials february maximum speed knots mph knots mph september ships carried long tons coal overweight steam nautical miles speed armoured frigates barque rigged sail area square feet funnel semi retractable reduce wind resistance sail designed allow propeller hoisted stern ship reduce drag sail gear fitted ship armament armament class ships intended muzzle loading pounder guns main deck fore aft chase guns upper deck modified construction rifled pounder breech loading guns mounted upper deck pounders broadside delays construction shortage guns received guns breech loading guns new design armstrong hoped partially alleviate overweight condition ships fully armed received pounders upper deck pounders main deck armour firing tests carried september armoured target proved pounder inferior pounder gun armour penetration repeated incidents breech explosions battles caused navy withdraw gun service shortly inch solid shot pounder gun weighed approximately pounds gun weighed pounds gun muzzle velocity range yards elevation inch shell pounder armstrong breech weighed pounds muzzle velocity elevation maximum range yards pounder gun weighed pounds guns fire solid shot explosive shells rearmed refit sixteen inch inch rifled muzzle loading guns received guns initial armament inch guns mounted quarterdeck fought inch guns fitted upper deck remaining inch guns carried main deck shell calibre inch gun weighed pounds gun weighed long tons muzzle velocity credited ability penetrate inches wrought iron armour muzzle calibre inch gun weighed long tons fired pounds shell credited nominal ability penetrate inch armour armour class ships wrought iron waterline armour belt inches thick covered feet amidships left bow stern unprotected protect fire belt closed inch transverse bulkheads end lower deck level armour extended feet inches waterline main deck protected armour ran length ship amidships inch thick length feet tapered thickness inches ends ship armour backed inches teak lack armour stern meant steering gear vulnerable ships construction service whilst construction went bankrupt november shipyard taken delayed launching year shortage muzzle loading guns delayed completion nearly years contrast served channel_fleet commissioning paid armed refit formed like service reserve guard ship commissioning remained ships little significance assigned commanded admiral june august russian war scare russo turkish war assigned queen_victoria guard ship nearly summer period queen family residence paid portsmouth remained briefly hms torpedo school store hulk british warship wireless installed conducted trials new equipment royal_navy paid assigned hms training establishment briefly losing renamed ship converted balloon world war changed offered sale ship converted floating oil tank towed
Hector-class ironclad