15.5 cm/60 3rd Year Type naval gun

September 2013 15.5 cm/60 3rd Year Type Aft 155 mm gun turret Yamato 300px.jpg Aft 155-mm triple turret on Yamato under construction, September 1941 Japan Naval gun yes yes 1935–1945 Imperial Japanese Navy World War II 1933 Kure Naval Arsenal 80 12.7 MT lb 9.615 m ft 9.3 m ft 55.87 kg lbDiGiulian 155 mm in 60 caliber 5 rpm 925 m/s ft/s 27400 m ydat 45° -7° to +45°Campbell, Naval Weapons of WWII, p.187-188. The 15.5 cm/60 3rd Year Type 60口径三年式15.5cm3連装砲 60 kōkei sannenshiki 15.5 centi sanrensōhō was a dual-purpose naval gun used by the Imperial Japanese Navy on the Yamato battleship 2s as secondary armament in four triple turrets, the Mogami cruiser 2s in five triple turrets (later converted to five twin 20 cm/50 3rd Year Type naval gun turrets) and on the light cruiser Ōyodo in two triple turrets. The Tone cruiser 2s were also initially planned to carry the 15.5 cm/60 3rd Year Type in five triple turrets, but were redesigned with the 20 cm/50 3rd Year Type in four twin turrets. They were also deployed on 60° single mounts as coastal defense guns in the Tokyo Bay area.Campbell, Naval Weapons of WWII, p.187-188. Construction was of the monobloc type with autofretting and used a Welin breech block mechanism which could be operated either hydraulically or by hand. Their slow rate of fire, limited elevation and slow traverse made them unsuitable for the AA role, but they were an excellent anti-ship weapon.DiGiulian See also Canon de 155 mm Modèle 1920 French counterpart by caliber Notes References Naval Weapons of World War Two Campbell John Naval Institute Press Annapolis, Maryland 1985 0-87021-459-4 Tony DiGiulian, Japanese 15.5 cm/60 (6.1") 3rd Year Type External links Category:World War II naval weapons Category:Naval guns of Japan Category:155 mm artillery Category:Military equipment introduced in the 1930s