8 cm/40 3rd Year Type naval gun
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|8cm/40 3rd Year Type naval gun|
An 8cm/40 3rd Year Type gun captured at Guadalcanal
|Place of origin||Empire of Japan|
|Used by||Imperial Japanese Navy|
|Wars||World War I
World War II
|Number built||69 (plus possibly spares)|
|Weight||600 kilograms (1,323 lb)|
|Barrel length||3,048 millimeters (10 ft 0 in) (bore length)|
|Shell weight||5.67–5.99 kilograms (12.5–13.2 lb)|
|Caliber||7.62-centimeter (3.0 in)|
|Breech||sliding breech block|
|Elevation||-5° - +75°|
|Rate of fire||13-20 rounds per minute|
|Muzzle velocity||670–685 meters per second (2,200–2,250 ft/s)|
|Maximum firing range||10,800 meters (11,800 yd)|
|Flight ceiling||5,400 meters (5,900 yd) (eff. ceiling)|
The 8cm/40 3rd Year Type naval gun was a Japanese naval anti-aircraft gun introduced during World War I. Although designated as 8 centimeters (3.15 in), its shells were 76.2 millimeters (3 in) in diameter.
It was installed on the Sendai-class cruiser, Chikuma-class cruiser, Tenryū-class cruisers, Kuma-class cruisers, Nagara-class cruisers, Japanese cruiser Yūbari, Ise-class battleships, Fusō-class battleships, Japanese aircraft carrier Hōshō, Japanese submarine tender Komahashi, Jingei-class submarine tenders.
During Pacific War the gun was thoroughly obsolete, relegated to secondary duties on smaller ships like Ning Hai-class cruisers, Japanese minelayer Itsukushima, Akagi Maru-class Armed merchantmens, and especially gunboats. Some guns were given to civil air defense in the Southern Japan.
- Campbell, John (1985). Naval Weapons of World War II. Annapolis, MD: Naval Institute Press. ISBN 0-87021-459-4.
- This page incorporates material from Japanese Wikipedia page ja:四十口径三年式八糎高角砲, accessed 22 January 2016
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