design battleship design known super class plan class battleships begun design complete demand types warships met work design halted laid authors argued design powerful battleships history massive size main battery guns numerous smaller caliber weapons design background initial plans battleships called guns quadruple triple turrets successful construction gun japanese confident built addition speed knots mph desired class faster mph north_carolina class battleships grand specifications curtailed tests culminated ship displacement tons felt ships size large expensive specifications initial design studies undertaken completion plans class focused ship displacement nearer japanese expected americans able obtain true characteristics class principal armament use guns vital japan policy individual ships superiority american counterparts meant counter reply plans essentially completed similar fate documents relating class papers plans relating class destroyed end war meaning specifications ships known known ships greater firepower class main battery inch guns twin turrets secondary armament caliber guns displacement similar class tonnes armor belt probably going large steel mills japan incapable manufacturing instead double armor plates going effective single plate armament details smaller armament planned ships given sources main battery caliber guns dual turrets definitely planned largest fitted capital ship guns mounted class possibly guns constructed naval arsenal detailed designs turrets hold guns drawn turrets weighed tonnes long tons trained second range port starboard guns fired maximum rate rounds minute elevated elevation rate second weighed long tons long bore length armor piercing ammunition weighed high explosive rounds secondary battery caliber guns considered final design best anti aircraft gun produced japan second world war overall weapons compared contemporary weapons key advantages successful high muzzle velocity fast rate fire resulted short round service life anti aircraft defense ceiling effective range able fire rounds minute battleships axis world war authors argued design powerful battleships history main armament use dual purpose secondary battery construction war horizon early design work diverted battleships design virtually complete demand aircraft carriers cruisers smaller ships met work ships designated warships number projected building program built dock built dock fourth ship class warship number launched ships supposed laid late early launched finished war turn japanese meant need ships battleships
Design A-150 battleship