italian battleship class dreadnoughts built italian royal_navy early 1910s completed beginning world war ship saw action sunk magazine explosion loss officers enlisted men italians blamed austro hungarian loss accidental refloated plans repair budgetary constraints permit hulk sold scrap description meters long waterline meters overall ship beam meters draft meters displaced long tons normal load long tons deep load class dreadnoughts complete double hull subdivided longitudinal transverse bulkheads crew officers enlisted men ship machinery consisted parsons steam turbines driving propeller shaft steam turbines provided water tube boilers burned oil burned fuel oil coal designed reach maximum speed knots mph shaft horsepower failed reach goal sea trials despite generally exceeding rated power turbines ship maximum speed knots mph shp ship store maximum long tons coal long tons oil gave range nautical miles mph nmi knots mph armament main armament consisted thirteen caliber millimeter guns gun turrets turrets arranged centerline twin gun turret superfiring triple gun turret fore aft pairs triple turret amidships designated bow stern turrets elevation capability degrees ship carry rounds gun normal load sources disagree guns performance naval historian claims fired kilogram armor piercing projectiles rate round minute muzzle velocity metres second gave maximum range meters secondary armament consisted eighteen caliber millimeter guns mounted casemates sides hull guns degrees maximum elevation degrees rate fire shots minute fire kilogram high explosive muzzle velocity meters second maximum distance yards ship carried total rounds defense torpedo boats carried fourteen caliber guns thirteen mounted turret tops mounted different positions including forecastle upper decks guns range elevation secondary guns rate fire higher rounds minute fired kilogram muzzle velocity meters second maximum distance yards ships fitted submerged centimeter torpedo tubes broadside stern armor class ships complete waterline armor belt meters high meters waterline meters maximum thickness millimeters amidships reducing millimeters stern millimeters bow lower edge belt uniform millimeters thickness main belt armor millimeters thick extended meters lower edge main deck thinner millimeters thick extended meters bow turret upper armor protected casemates millimeters thick ships armored decks main deck thick layers flat increased millimeters slopes connected main belt second deck millimeters thick layers fore aft transverse bulkheads connected armored belt decks frontal armor gun turrets millimeters thickness millimeter sides millimeter roof rear barbettes millimeter armor forecastle deck reduced millimeters forecastle upper decks millimeters upper deck forward conning tower walls millimeters thick aft conning tower millimeters thick construction service named artist inventor built genoa shipyard laid july launched october completed ship saw combat war spent anchor capsized taranto harbor metres water internal magazine explosion night august loading ammunition casualties included officers enlisted men subsequent investigation blamed austro hungarian unstable responsible wanted raise ship rejected initial plans demolish wreck explosives ultimately settled plan ship hull raise compressed air required ship coal ammunition gun turrets removed cut loose respectively divers reduce weight largest drydock taranto maximum depth metres upside drew metres meant funnels cut preparation required years ship refloated september deep channel location drydock moved special wooden framework built support inverted water drydock drained decks designed handle stresses involved unique situation reinforced withstand weight hull preliminary repairs preparation deep spot harbor task long tons ballast added spots calculated assist effort primary work long tons water pumped ship starboard successfully january regia marina planned replacing center turret millimeter guns ultimately lacked funds sold scrap march
Italian battleship Leonardo da Vinci