italian battleship regina lead ship class built italian regia marina royal_navy ship built shipyard armed main battery guns guns fast period speed nearly knots mph active ottoman_empire participated italian conquest world war saw action threat submarines narrow confines adriatic_sea retained years war ultimately stricken february broken scrap design meters long overall beam maximum draft displaced long tons combat load propulsion system consisted vertical triple expansion engines steam engines provided coal fired belleville boilers ship propulsion system provided speed knots mph range approximately nautical miles knots mph crew officers enlisted men built ship armed caliber guns placed single gun turrets forward aft ship equipped guns twin turrets amidships close range defense torpedo boats provided battery sixteen guns equipped torpedo tubes placed hull waterline protected krupp steel manufactured main belt thick deck thick conning tower protected armor plating main battery guns thick plating inch gun turrets thick sides service history laid shipyard march launched june fitting work completed commissioned italian fleet september served ready annual maneuvers late september early october command vice admiral april participated naval demonstration protest ottoman decision prohibit italian post offices ottoman territory ship time commanded duke ship went aftermath earthquake remained active duty squadron time sisters completed bringing total number line battleships including regina class battleships italo turkish war september italy declared war ottoman_empire order seize libya duration conflict assigned 1st division 1st squadron sisters command vice admiral joined squadron late october october sisters cruisers destroyers torpedo boats escorted convoy carried half 2nd ottomans refused surrender city amphibious assault italian fleet opened fire turkish defenders landing parties ships army infantry went ashore italians quickly forced ottomans withdraw city evening short siege ottoman forces withdrew october leaving city italians december ships 1st squadron dispersed ports regina armored cruiser stationed recently arriving supported occupied city surrounding area contributing landing parties providing fire support ground troops gunfire support supplied contributed defeat major attack city ottoman army december early fleet withdrawn italy repairs refit leaving small force cruisers light craft patrol north african coast march regina involved experiments wireless syracuse sicily tests conducted supervised duke world war italy declared neutrality outbreak world war august july triple convinced italians enter war primary naval opponent duration war austro hungarian navy admiral believed threat submarines confined waters adriatic permit active fleet policy planned distant blockade battle fleet smaller vessels boats conducted raids heavy ships italian fleet preserved potential major battle event austro hungarian fleet emerge bases result ship career war limited war sisters assigned 2nd division spent war rotating bases taranto combat light cruisers austro hungarian navy raided barrage ensuring regina sisters raised steam assist allied warships italian commander refused permit join battle fear loss submarine infested adriatic terms italy permitted retain sisters kept ships service indefinitely replaced new battleships normal practice treaty system stricken naval register february subsequently broken scrap
Italian battleship Regina Elena