japanese battleship lead ship ship dreadnought battleships built imperial_japanese_navy decade 20th century following japanese ship naming conventions named osaka world war bombarded german fortifications battle saw combat sank explosion ammunition magazine loss officers crewmen background class ordered june warship supplement program russo japanese war japan dreadnoughts construction delayed severe depression design based uniform inch main gun armament cost considerations prevented guns having barrel length design description ship overall length feet beam feet inches normal draft feet displaced long tons normal load crew ranged officers enlisted men fitted pair license built curtis steam turbine sets set driving propeller steam water tube boilers turbines rated total shaft horsepower design speed knots mph carried coal fuel oil range nautical miles speed knots mph main armament consisted caliber inch 41st year type guns twin gun turrets fore aft superstructure caliber inch 41st year type guns mounted twin gun turrets superstructure secondary armament caliber inch 41st year type guns mounted casemates sides hull caliber quick firing inch 41st year type guns ship equipped dozen caliber inch 4th year type guns guns addition battleship fitted submerged inch torpedo tubes broadside stern waterline main belt ship maximum thickness inches amidships tapered thickness inches ends ship inch armor protected casemates barbettes main guns inches thick armor main gun turrets maximum thickness inches deck armor inches thick conning tower protected inches armor construction career laid naval arsenal april launched october ceremony attended completed march cost october ship present battleship fire started sailor forward magazine flooded fire control sent fire fighting teams assist crew case needed world war began august sister ship bombarded german fortifications october november final stage battle ship present january victorious second squadron returned japan assigned squadron refitted year rejoined squadron refit commanded captain entered bay evening july following morning torpedo target practice cancelled rough seas battleship remained anchor rest day afternoon loud explosion heard vicinity starboard forward main gun turret large quantities smoke erupted turret second funnels minutes later began list starboard capsized minutes explosion thousand men aboard time explosion killed survivors imperial_japanese_navy convened commission investigate explosion day incident vice admiral chairman commission suspected arson plausible suspect found reported magazine spontaneously ignited magazines inspected january february problems discovered possibility likely commission recommendations control production handling successfully adopted navy considered ultimately decided expensive delay construction battlecruiser year stricken navy list september wreck later partially dismantled hull abandoned place serve artificial reef
Japanese battleship Kawachi