BL 7.5 inch Mk I naval gun
| Ordnance BL 7.5 inch gun Mk I | |
|---|---|
Starboard wing gun on HMS Antrim
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| Type | Naval gun |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1905–20 |
| Used by | Royal Navy |
| Production history | |
| Designer | Vickers |
| Designed | circa. 1901 |
| Specifications | |
| Barrel length | 337.5 inches (8,572 mm) bore (45 calibres) |
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| Shell | 200 pounds (90.7 kg) |
| Calibre | 7.5 inches (191 mm) |
| Muzzle velocity | 2,700 feet per second (820 m/s) |
The BL 7.5-inch gun Mk I was a British 45-calibre, medium-velocity, naval gun which entered service with the Royal Navy in 1905.
This gun was only mounted on Devonshire class cruisers commissioned in 1905, and was quickly superseded by the 50-calibre 7.5 inch Mk II gun.
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