The 30mm Type 2 cannon was a

Japanese Navy , abbreviated , also simply known as the Japanese Navy, is the maritime warfare branch of the Japan Self-Defense Forces, tasked with the naval defense of Japan. The JMSDF was formed following the dissolution of the Imperial Japanese Navy (IJN ...

autocannon An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles (bulle ...

used during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...

. It was a scaled-up version of the 20mm

Oerlikon FF The FF were a series of 20mm autocannon introduced by Oerlikon in the late 1920s. The name comes from the German term ''Flügel Fest'', meaning ''wing mounted, fixed'', being one of the first 20mm guns to be small and light enough to fit into a f ...

cannon.

Specifications

*Caliber: 30 mm (1.2 in) *Ammunition: 30 x 92RB30 MM CALIBRE CARTRIDGES
(264 g) *Weight: 51 kg (112 lb) *Rate of fire: 380 rounds/min *Muzzle velocity: 710 m/s (2,330 ft/s)

References

* Gustin Emmanuel

(1999) 30 mm artillery Autocannon Aircraft guns World War II weapons of Japan {{Artillery-stub