18-pounder carronade 19th century naval gun 3D model

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A carronade is a short, smoothbore, cast-iron cannon which was used by the Royal Navy and the US Navy from the 1770s to the 1870s. It was made by the Scottish Carron Company. A carronade weighed a quarter as much and used a quarter to a third of the gunpowder charge as a long gun firing the same cannonball. They fired grapeshot as well as normal cannonballs. A carronade was much shorter and a third to a quarter of the weight of an equivalent long gun. A 32-pounder carronade, for example, weighed less than a ton, but a 32-pounder long gun weighed over 3 tons. Carronades were manufactured in the usual naval gun sizes: 6-, 12-, 18-, 24-, 32-, 42-, and 68-pounder versions. Most were made of cast iron. At the beginning of the 19th century, a transport brig might be armed with eight 18-pounder carronades and two 4-pounder guns.