The QF 6 pounder Hotchkiss
was a light 57 mm naval gun and coast defence gun of the late 19th century used by many countries, and was adapted for use in the early British tanks
in World War I
These guns were used as examination guns at coastal forts in World War II, including Barrett Point
battery near Prince Rupert, British Columbia
The UK adopted a 40-calibres (i.e. 90 inch barrel) version as Ordnance QF Hotchkiss 6 pounder gun
Mk I and Mk II or QF 6 pounder 8 cwt
. It was manufactured under licence by the Elswick Ordnance Company
United Kingdom Naval service
They were originally mounted for use against the new (steam-driven) torpedo boats
which started to enter service in the late 1870s.
The original 1885 Mk I lacked a recoil system. The Mk II of 1890 introduced a recoil system, with a pair of recoil/recuperator cylinders.
During World War I
the navy required many more guns and a version with a single-tube barrel was developed to simplify manufacture, identified as "6 pdr Single Tube". Initially these guns were only allowed to be fired with a special lower charge but in 1917 they were relined with A tubes as Mk I+++ which enabled them to use the standard 6 pounder ammunition.
After World War I the gun was considered obsolete for combat use, but... Read More