QF 14 pounder Mk I & II gun
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.
QF 14 pounder Mk I & II gun

photographer not identified · Originally published in Melbourne "Weekly Times", July 14 1900. This version scanned by John Rogers for the http: website, courtesy of Newspaper Collection, State Library of Victo · Public domain
- Name
- Ordnance QF 14-pounder Mk I & II
- Field
- naval artillery · rifled breech loader · quick-firing gun
- Region
- United Kingdom of Great Britain and Ireland
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Documentary summary
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.
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wikidata · Q7265438
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Key facts
Key facts
• Name — Ordnance QF 14-pounder Mk I & II • Origin — United Kingdom • Type — Naval gun • Is Ranged — yes • Is Artillery — yes • Is Uk — yes • Service — 1904-19?? • Used By — Kingdom of Italy • Wars — World War I • Designer — Vickers • Design Date — 1909 • Manufacturer — Elswick Ordnance Company (Mk I) Vickers, Sons and Maxim (Mk II) • Weight — 1904 - • Part Length — 150 in (bore) (50 calibres) • Cartridge — QF British: 12.5 lb QF Italian: 14.1 lb • Caliber — 3 in • Rate — 10 rpm • Velocity — British: 2548 ft/s Italian: 3051 ft/s
Service
Service
• The gun equipped the two 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
British ammunition
In British service the guns fired the same 3-inch, 12.5 lb shell as QF 12-pounder guns. • Illustration — Cordite Cartridges circa. 1905 • Illustration — Mk II Common pointed shell • Illustration — Mk II & Mk III Common Lyddite shell • Illustration — Mk IV Common Lyddite shell with internal night tracer, 1914
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1- naval artilleryTerminology
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 17 August 2026.
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