QF 14-pounder naval gun Mk I & II

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Naval gun

Ordnance QF 14-pounder Mk I & II
Type	Naval gun
Place of origin	United Kingdom
Service history
In service	1904-19??
Used by	Royal Navy Regia Marina
Wars	World War I
Production history
Designer	Vickers
Designed	1909
Manufacturer	Elswick Ordnance Company (Mk I) Vickers, Sons and Maxim (Mk II)
Specifications
Mass	1,904–2,016 lb (864–914 kg)
Barrel length	150 in (3.8 m) (bore) (50 calibres)

Shell	QF British: 12.5 lb (5.67 kg) QF Italian: 14.1 lb (6.40 kg)
Calibre	3 in (76.2 mm)
Rate of fire	10 rpm
Muzzle velocity	British: 2,548 ft/s (777 m/s) Italian: 3,051 ft/s (930 m/s)

The QF 14-pounder Mk I & II was a 3-inch high-velocity naval gun used to equip battleships for defence against torpedo boats. It was produced for export by Elswick Ordnance Company (Mk I) and Vickers, Sons and Maxim (Mk II). In Royal Navy service they were modified to use the standard 12-pounder shell, while the Italian Regia Marina used the original 14-pounder shells.

Service

The gun equipped the two Swiftsure-class pre-dreadnought battleships built in Britain for Chile and purchased by the UK in 1903 before completion.
The gun also equipped the three Conte di Cavour-class dreadnought battleships of the Regia Marina.
The gun also equipped the two Andrea Doria-class dreadnought battleships of the Regia Marina.
The gun also equipped the two Pisa-class armored cruisers of the Regia Marina.

British ammunition

In British service the guns fired the same 3-inch, 12.5 lb shell as QF 12-pounder guns.

Cordite Cartridges circa. 1905
Mk II Common pointed shell
Mk II & Mk III Common Lyddite shell
Mk IV Common Lyddite shell with internal night tracer, 1914

References

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

External links

http://www.navweaps.com/Weapons/WNIT_3-50_m1909.php

v t e 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 BL 14-inch Mk II (US built) BL 15-inch Mk I 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 I – IV BL 13.5-inch Mk V BL 13.5-inch Mk VI 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-pounder 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 Mk I – III 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-pounder 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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