| 120-pounder Whitworth gun | |
|---|---|
| Type | Naval gun |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1865– |
| Used by | Brazil |
| Wars | War of the Triple Alliance |
| Production history | |
| Designer | Joseph Whitworth |
| Manufacturer | Joseph Whitworth |
| Produced | 1865?– |
| Specifications | |
| Weight | 16,660 pounds (7,556.8 kg) |
| Length | 144 inches (3.658 m) |
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| Shell | Solid shot Explosive shell |
| Shell weight | 151 pounds (68.5 kg) |
| Calibre | 7-inch (178 mm) |
| Maximum range | about 5,540 yards (5,070 m) |
| Filling | Black powder |
| Filling weight | 5 pounds (2.3 kg)[1] |
The 120-pounder Whitworth naval gun was designed by Joseph Whitworth during the 1860s. It was a rifled muzzle loader and used his hexagonal rifled bore design.
A number of 120-pounders were bought by the Brazilian Navy and used to arm some of its ironclads during the War of the Triple Alliance in the late 1860s.[2]