EOC 10-inch /45 naval gun
|EOC 10 inch 45-calibre naval gun|
Forward 10-inch turret of HMS Swiftsure
|Wars||World War I|
|Designer||Elswick Ordnance Company|
|Barrel length||37 ft 6 in (11.430 m) (45 cal)|
|Shell||500 pounds (227 kg)|
|Calibre||10 inches (254 mm)|
UK : 2,625 ft/s (800 m/s)|
Italy: 850 m/s (2,800 ft/s)
|Maximum firing range||
UK : 18,850 yd (17,240 m)|
Italy : 25,000 m (27,000 yd) @ 25°
The EOC 10-inch 45 calibre gun were various similar 10-inch naval guns designed and manufactured by Elswick Ordnance Company to equip ships they built and/or armed for several countries before World War I.
Elswick supplied 5 of their 10-inch 45-calibre guns for use on the battleship Constitución that they were building for Chile. Britain took the ship over in 1903 as HMS Swiftsure, and the guns were designated BL 10 inch Mk VI in UK service. These guns fired a 500-pound (227 kg) projectile using 146 pounds 12 ounces (66.6 kg) of cordite MD propellant.
Elswick supplied later, more powerful "Pattern W" models of its 10-inch 45-calibre guns for the San Giorgio-class armoured cruisers. In Italian service these were known as the Cannone da 254/45 A Modello 1906.
- UK mountings limited to 13.5°
- Treatise on Ammunition 10th edition 1915
- Friedman, p. 238
- Friedman, Norman (2011). Naval Weapons of World War One. Barnsley, South Yorkshire, UK: Seaforth. ISBN 978-1-84832-100-7.
- Tony DiGiulian, British 10"/45 (25.4 cm) Marks VI and VII
- Tony DiGiulian, Italy 10"/45 (25.4 cm) Model 1908