Australian Army Museum of Western Australia > Records

Pre 1914, Projectile for 6 inch Mk V Coast Defence Gun, 1895

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Overview

Projectile for 6 inch Mk V coast defence gun of the type initially positioned in Princess Royal Fortress Albany.

Historical information

The 6 inch Mk V was an Elswick Ordnance export design, completely different from and longer (30-calibres) than the contemporary 26-calibres British naval service 6-inch Mk III, IV and VI guns designed by the Royal Gun Factory, although it fired the same 100-pound projectiles. The gun was of a complex all-steel built-up construction, of a steel A-tube surrounded by multiple steel hoops, breech-piece and jacket.

Several were acquired by the British government for coast defence in the UK and were given the designation 6-inch gun Mark V. The breech fittings and firing mechanism were modified in British service to standardize them with the British service guns, Mark IV and VI. The breech-screw was locked by turning to the left, unlike standard service guns made by the Royal Gun Factory, which all locked to the right. Rifling consisted of 28 grooves of the polygroove "Elswick section" type, increasing from 0 to 1 turn in 30 calibres (i.e. 1 turn in 180 inches) at the muzzle.

They were also exported for use as coast-defence guns in Hong Kong, New Zealand, Australian colonies and Siam (Thailand).

Details

Registration number

cwa-org-32-54-422

Links to additional resources

Robert Glyde Study

Australian Army Museum of Western Australia

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