16-inch/50-caliber Mark 7 gun
< 16-inch
| 16"/50 caliber Mark 7 gun | |
|---|---|
| Type | Naval gun |
| Place of origin | United States |
| Service history | |
| In service | 1943–1992 |
| Used by | U.S. Navy |
| Wars | World War II Korean War Vietnam War Lebanese Civil War Gulf War |
| Production history | |
| Designed | 1939 |
| Specifications | |
| Mass | 267,904 lb (121,519 kg; 121.519 t) (including breech) |
| Length | 816 in (68.0 ft; 20.7 m) |
| Barrel length | 800 in (67 ft; 20 m) (50 calibers) |
| Shell | AP Mark 8: 2,700 lb (1,225 kg) HC Mark 13: 1,900 lb (862 kg) Nuclear Mark 23 (W23): 1,900 lb (862 kg) |
| Caliber | 16 in (406 mm) |
| Muzzle velocity | AP: 2,500 ft/s (762 m/s) HC & Nuclear: 2,690 ft/s (820 m/s) |
| Maximum firing range | (24.047 mi (38.700 km) (on Battleship mount) |
The 16"/50 caliber Mark 7 – United States Naval Gun is the main armament of the Iowa-class battleships and was the planned main armament of the canceled Montana-class battleship.