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The 30 mm Type 5 cannon was a Japanese Navy autocannon used near the end of World War II. It was an indigenous 30 mm design with better performance than the Navy's earlier Oerlikon-derived Type 2 or the Imperial Army's Browning-derived Ho-155, although it was considerably heavier. The Type 5 was to have become the standard fighter cannon of the Japanese Navy – four would have been mounted on the J7W Shinden – but by the end of the war had seen use on only a few aircraft, including variants of the Mitsubishi J2M and Yokosuka P1Y.
| Type 5 cannon | |
|---|---|
| Type | Aircraft cannon |
| Place of origin | Imperial Japanese Navy |
| Service history | |
| Wars | World War II |
| Specifications | |
| Mass | 70 kg (154 lb 5 oz) |
| Length | 2,070 mm (81 in) |
| Barrel length | 1,350 mm (53 in) |
| Cartridge | 30 x 122 mm (345 g) |
| Calibre | 30 mm (1.2 in) |
| Action | Short recoil-operated |
| Rate of fire | 500 rounds/min |
| Muzzle velocity | 770 m/s (2,500 ft/s) |
| Feed system | Belt |
- Caliber: 30 mm (1.2 in)
- Ammunition: 30 × 122 (345 g)
- Weight: 70 kg (155 lb)
- Rate of fire: 500 rounds/min
Cannon was constructed by engineer Masaya Kawamura, in Nihon Tokushu-Ko KK, and produced in Navy factories in Toyokawa and also in small numbers KK Nihon Seikojo and Nihon Tokushu-Ko KK.[1]
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