Gunnade

A carronade is a short, smoothbore, cast iron cannon which was used by the Royal Navy and first produced by the Carron Company, an ironworks in Falkirk, Scotland, UK. It was used from the 1770s to the 1850s. Its main function was to serve as a powerful, short-range, anti-ship and anti-crew weapon. Carronades were initially found to be very successful, but they eventually disappeared as naval artillery advanced, with the introduction of rifling and consequent change in the shape of the projectile, exploding shells replacing solid shot, and naval engagements being fought at longer ranges.

The carronade was designed as a short-range naval weapon with a low muzzle velocity for merchant ships, but it also found a niche role on warships. It was produced by the Carron ironworks and was at first sold as a system with the gun, mounting, and shot all together. The standard package of shot per gun was 25 roundshot, 15 barshot, 15 double-headed shot, 10 "single" grapeshot, and 10 "single" canister shot. "Single" meant that the shot weighed the same as the roundshot, while some other canister and grapeshot were also included which weighed one and a half times the roundshot.

Its invention is variously ascribed to Lieutenant General Robert Melville in 1759, or to Charles Gascoigne, manager of the Carron Company from 1769 to 1779. In its early years, the weapon was sometimes called a "mellvinade" or a "gasconade". The carronade can be seen as the culmination of a development of naval guns reducing the barrel length and gunpowder charge. The Carron Company was already selling a "new light-constructed" gun, two-thirds of the weight of the standard naval gun and charged with one sixth of the weight of ball in powder before it introduced the carronade, which further halved the gunpowder charge.

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