Military Wiki
Ordnance QF 14 pounder Mk I & II
Type Naval gun
Place of origin  United Kingdom
Service history
In service 1904-19??
Used by Naval Ensign of the United Kingdom.svg Royal Navy
Wars World War I
Production history
Designed 190?
Manufacturer Elswick Ordnance Company (Mk I)
Vickers, Sons and Maxim (Mk II)
Weight 1,904–2,016 pounds (864–914 kg)
Barrel length 150 inches (3.8 m) (bore) (50 calibres)

Shell QF 12.5 pounds (5.67 kg)
Calibre 3-inch (76.2 mm)
Muzzle velocity 2,548 feet per second (777 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.


The gun equipped the Swiftsure-class pre-dreadnought battleship built in Britain for Chile and purchased by the UK in 1903 before completion.

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

See also



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

External links

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