EOC 10-inch /45 naval gun

EOC 10 inch 45-calibre naval gun
Forward 10-inch turret of HMS Swiftsure
Type	Naval gun
Service history
In service	1904–41
Used by	Italy United Kingdom
Wars	World War I
Production history
Designer	Elswick Ordnance Company
Specifications
Barrel length	37 ft 6 in (11.430 m) (45 cal)

Shell	500 pounds (227 kg)
Calibre	10 inches (254 mm)
Muzzle velocity	UK : 2,625 ft/s (800 m/s)^[1] Italy: 850 m/s (2,800 ft/s)^[2]
Maximum firing range	UK : 18,850 yd (17,240 m)^[3] Italy : 25,000 m (27,000 yd)^[4] @ 25°^[5]

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.

History

UK service

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.^[6]

Italian service

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.^[7]

Notes

↑ http://dreadnoughtproject.org/docs/notes/Range_Tables_for_HM_Fleet_1910.php
↑ http://navalhistory.flixco.info/H/201650x53535/8330/a0.htm
↑ UK mountings limited to 13.5°
↑ http://navalhistory.flixco.info/H/201650x53535/8330/a0.htm
↑ DiGiulian
↑ Treatise on Ammunition 10th edition 1915
↑ Friedman, p. 238

References

Friedman, Norman (2011). Naval Weapons of World War One. Barnsley, South Yorkshire, UK: Seaforth. ISBN 978-1-84832-100-7.

External links

Tony DiGiulian, British 10"/45 (25.4 cm) Marks VI and VII
Tony DiGiulian, Italy 10"/45 (25.4 cm) Model 1908

British Empire naval weapons of the First World War

Monitor guns	BL 9.2 inch Mk VI BL 9.2 inch Mk VIII BL 9.2 inch Mk X BL 9.2 inch Mk XII BL 12 inch Mk VIII US 14 inch 45 cal BL 18 inch Mk I

Capital ship main armament	Vickers 10 inch 45 cal EOC 10 inch 45 cal BL 12 inch Mk VIII BL 12 inch Mk IX BL 12 inch Mk X BL 12 inch Mk XI & XII EOC 12 inch 45 cal Mk XIII BL 13.5 inch Mk V EOC 14 inch 45 cal Mk I BL 15 inch Mk I

Armoured cruiser main armament	BL 7.5 inch Mk I BL 9.2 inch Mk X BL 9.2 inch Mk XI

Secondary armament and light cruiser main armament	QF 12 pdr 18 cwt QF 14 pounder Maxim-Nordenfelt QF 14 pounder Mk I & II QF 4 inch Mk III BL 4 inch Mk VII QF 4 inch Mk V BL 4 inch Mk IX BL 5.5 inch Mk I QF 6 inch BL 6 inch Mk VII BL 6 inch Mk XI BL 6 inch Mk XII BL 6 inch Mk XIII-XVIII BL 7.5 inch Mk II - Mk V

Destroyer and small cruiser armament	QF 12 pdr 12 cwt Mk II QF 4 inch Mk III BL 4 inch Mk VIII QF 4 inch Mk IV BL 4.7 inch Mk I

Merchant ship armament	QF 4.7 inch Mk I - IV QF 4.7 inch Mk V*

Submarine guns	BL 4 inch Mk XI QF 4 inch Mk XII

Anti-aircraft guns	QF 2 pounder "pom-pom" Mk II QF 3 inch 20 cwt QF 4 inch Mk V

Light weapons	.303 Vickers machine gun QF 3 pounder Hotchkiss QF 3 pounder Vickers QF 6 pounder Hotchkiss

Torpedoes	18 inch Mk V - VIII 21 inch Mk II 21 inch Mk IV

Mines	Spherical Mk I, II and III Vickers Elia mine Type H mine

Anti-submarine weapons	Type A Depth charge Type B Depth charge Type C Depth charge Type D Depth charge Type E Depth charge Type F Depth charge Type G Depth charge Cruiser Mine 7.5 inch howitzer

Landing guns	QF 12 pounder 8 cwt

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