Heavy Caliber Ordnance Imperial Japanese Navy
18.1″/45 Caliber Battery
The main battery of the Battleships Yamato and Musashi consisted of nine 46 cm (18.1 in) 45 Caliber Type 94 naval guns. They largest caliber of naval artillery ever fitted to a warship. However, the shells were not as heavy as those fired by the British 18-inch naval guns of World War I. Each gun was 21.13 metres (69.3 ft) long, weighed 147.3 metric tons (162.4 short tons), and was capable of firing high-explosive or armor-piercing shells 42 kilometres distance.
Technical specifications of the Yamato Main Guns:
1:700 scale detail of the IJN 46cm L/45 18.1 Inch Type 94 Barrel 9pc Yamato and Musashi:
16.1″/45 Caliber Battery
This caliber was also know as 41 cm/45 (16.1″) 3rd Year Type, 40 cm/45 (16.1″) 3rd Year Type and with the official designation: 45 caliber 3rd Year Type 40 cm Gun.These were the first large-caliber guns that were completely designed and constructed in Japan. They were mounted afloat only on the Nagato class (Nagato and Mutsu), but had been planned for use on the Kaga, Amagi and Kii classes of the early 1920s, all of which were canceled as a result of the Washington Naval Limitation Treaty.
|Ship Class Used On||Nagato, Kaga, Amagi and Kii Classes|
|Date Of Design||1914|
|Date In Service||1921|
|Gun Weight||100 tons (101.6 mt)|
|Gun Length oa||741.7 in (18.840 m)|
Nagato class armament as built:
Nagato clas armament (1944):
14″/45 caliber battery
The rest of Japanese battleships had dual turrets, including Fuso-class (2), Ise-class (2) and Kong-class (4)
The primary armament of the Kongo-class consisted of eight 45-calibre 14-inch guns, mounted in four superfiring twin-gun turrets.The turrets had an elevation capability of −5/+20 degrees except in Kongō whose turrets had a maximum elevation capability of +25 degrees. The shells could be loaded at any angle and the guns had a firing cycle of 30–40 seconds.
IJN 45cal.Type41 36cm