class armored cruiser class called class ship class large armoured cruisers built imperial_japanese_navy russo japanese war ships reflected japanese experiences war designed fight battleships given armament equal superior existing japanese battleships development battlecruiser year completed sister ship obsolete completed foreign battlecruisers heavily armed faster ships played small role world war unsuccessfully hunted commerce sms protected troop convoys pacific_ocean shortly war began ships sold scrap accordance terms design description class ships originally ordered russo japanese war january class armored cruisers construction began redesigned incorporate inch guns twin turrets dozen inch guns single mounts earlier ships required larger hull fit turrets power additional boilers speed class ships ships given battleship grade armament existing armored cruisers intended fight battleships class armored cruisers battles russo japanese war powerful existing armored cruisers appearance british invincible class armament inch guns speed knots mph rendered ships obsolete commissioned reclassified battlecruisers ships overall length feet length perpendiculars feet beam feet inches normal draught feet inch displaced long tons normal load long tons load roughly long tons earlier ships crew numbered officers enlisted men metacentric height feet inches propulsion ships intended powered vertical triple expansion steam engines long construction delays suffered possible serve test bed steam turbine sets curtis turbines ordered battleship month later japanese paid manufacturing license turbines equipped turbine sets driving shaft developed total shaft horsepower intended maximum speed knots mph steam provided mixed firing equipped water tube boilers working pressure cm2 kpa psi sprayed fuel oil coal increase burn rate performance initial sea trials august unsatisfactory reached knots mph despite turbines exceeding power rating shp turbines subsequently modified propellers changed attempt problem limited success ship ran power trials june reached speed knots mph shp traditional pair cylinder steam engines power rating indicated horsepower indicated horsepower older ships type boiler derived additional power addition boilers total required additional funnel ships carried maximum long tons coal additional long tons fuel oil range unknown armament class armored cruisers armed caliber inch 41st year type guns mounted twin gun powered turrets guns elevation range normally loaded rounds angle loading angle theoretically possible fired pound projectiles muzzle velocity provided maximum range armour piercing shells intermediate armament heavier older ships twin gun turrets equipped calibre inch 41st year type guns mounted guns elevated gave maximum range yards pound projectiles fired muzzle velocity defense torpedo boats mainly provided fourteen caliber inch 41st year type quick firing guns mounted casemates sides hull gun fired pound shell muzzle velocity ships equipped caliber pounder cwt guns caliber pounder guns high angle mounts guns fired pound shells muzzle feet second respectively addition cruisers fitted submerged inch torpedo tubes broadside stern tube provided training torpedo normal torpedoes armor armor class improved compared earlier ships waterline armor belt krupp cemented armour inches thick inch gun turrets inches thick fore aft turrets inch armor extended inch gun turrets protected central inch casemates turrets armor inches thick ends main armor belt connected main gun barbettes inch transverse bulkheads primary gun turrets protected armor plates inches thick inch roof armour inch turrets inches thick main barbettes protected seven inches armour secondary barbettes inches armor inches upper armor belt thickness armored decks inches ship sides forward conning tower inches thick communications tube main deck seven inches thickness ships construction service construction ships delayed lack facilities shipyards shortage appropriately trained workers low priority building lengthy building time naval arsenal priority given building battleships repair reconstruction russian ships captured wait keel laid battleship available launched took advantage delay material components set record keel laying launching months figure built battleship dreadnought months decision switch engines turbines days launching received priority battleship completed years later ship imperial_japanese_navy use steam turbines fact construction completely halted months favor turbines late cruiser better suited serve new technology sailed thailand represent japan coronation ceremony king world war began august commanded ship ordered singapore british hunt light cruiser indian_ocean ordered new_zealand escort large troop convoy troops middle_east late september ordered guard convoy protests presence discovered november australian light cruiser detached convoy sink instead ending threat convoy transferred second south seas squadron refitted disarmed stricken navy list following year scrapped accordance attended june august assigned 1st south seas squadron search departed september reached october troops carried squadron occupied squadron based fiji november case decided double flagship 2nd squadron transferred 5th squadron following year like sister disarmed stricken subsequently scrapped
Ibuki-class armored cruiser