12.7 cm/40 Type 89 naval gun
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| 12.7 cm/40 Type 89 naval gun | |
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Type 89 gun mounted on Chitose
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| Type | Naval gun anti-aircraft gun |
| Place of origin | Empire of Japan |
| Service history | |
| In service | 1932–45 |
| Used by |  Imperial Japanese Navy |
| Wars | World War II |
| Production history | |
| Designed | 1928–32 |
| Produced | 1932–45 |
| Number built | ~1500 |
| Variants | Type 88 |
| Specifications | |
| Weight | 3,100 kilograms (6,834 lb) |
| Barrel length | 5,080 millimeters (16 ft 8 in) (bore length) |
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| Shell | Fixed |
| Shell weight | 20.9–23.45 kilograms (46.1–51.7 lb) |
| Caliber | Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). |
| Breech | horizontal breech block |
| Rate of fire | 8-14 rounds per minute |
| Muzzle velocity | 720–725 meters per second (2,360–2,380 ft/s) |
| Maximum firing range | 9,440 meters (10,320 yd) (AA ceiling) |
The 12.7 cm/40 Type 89 naval gun was a Japanese anti-aircraft (AA) gun introduced before World War II. It was the Imperial Japanese Navy's standard heavy AA gun during the war.
The Type 89 was adopted by the IJN on February 6, 1932, and was the primary anti-aircraft gun on new aircraft carriers, battleships and cruisers, most commonly installed in twin gun mounts. As IJN ships were upgraded in the 1930s and 1940s, their older AA guns were often replaced with Type 89 guns.
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References
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