|24-pounder long gun|
Spanish 24-pounder long gun mounted on the coastal defences of Ibiza Town.
|Used by||France, Spain, Great Britain, Netherlands, Sweden, USA|
|Unit cost||1252 Francs|
|Weight||2.500 metric tons |
470 kg (mount)
|Barrel length||2.572 metres|
|Crew||12 gunners and one powder-boy|
The 24-pounder long gun was a heavy calibre piece of artillery mounted on French warships of the Age of sail, second only to the 36-pounder long gun. They were comparable to the Canon de 24 Gribeauval used by the Army as its largest piece of siege artillery. 24-pounders were used as main guns on the heaviest frigates of the early 19th century and on fourth-rate ships of the line, on the second deck of first-rate ships of the line, and on the second deck of a few large third-rates.
Usage[edit | edit source]
As the 24-pounder calibre was consistent with both the French and the British calibre systems, it was a widespread gun amongst nations between the 17th and the 19th century. From the late 19th Century, the French Navy used the 24-pounder in two capacities: as main gun on frigates and 64-guns, or as secondary artillery on three-deckers and even enlarged versions two-deckers.
Under Louis XV, a typical heavy frigate would carry 12-pounder long guns until 1772, when the two vessels of the Pourvoyeuse class were built to carry 24-pounders; these proved too heavy in practical use, however, and the vessels were reequiped with 18-pounders, heralding the coming of the 18-pounder frigate that would become the standard in many navies of the late 18th century. The experiment was tried again in 1785 with Pomone, a successful design that opened the way to a standardisation on the 24-pounder figrate exemplified by the Romaine class. Overall, 14 of these heavy frigates were build between Pomone in 1785, and Poursuivante in 1798, each carrying between 24 and 30 24-pounders. After the Bourbon restauration, frigates were built using a different artillery system, carrying 30-pounders.
Two-deckers used the 24-pounder in two capacities: on the smallest two-deckers of 64 guns, the 24-pounder constituted the main artillery, with 26 pieces. Typical 74-gun vessels carried a 36-pounder main battery and an 18-pounder secondary battery, until the enlarged variant of the Téméraire class appeared in 1803, comprising Vétéran and Cassard. More significantly, the 24-pounder armed the secondary battery of all 80-gun ships of the line from 1749, when the Soleil-Royal introduced the practice, resulting in a two-decked with enough firepower to challenge a three-decker of the time.
During the reign of Louis XIV, three-deckers were standardised on a 36-pounder main artillery and an 18-pounder secondary battery. From the mid-18th century, under Louis XV, the secondary battery was strengthened to 24-pounders, beginning with the Sans-Pareil design that yielded Royal Louis. The other capital ships of the era, Ville de Paris, flagship of François Joseph Paul de Grasse during the American War of Independence, and Bretagne, flagship at the Battle of Ushant, similarly carried 24-pounders as secondary batteries. The practices was continued with the Océan class and the Commerce de Paris class.
In the Royal Navy, the 24-pounder was similarly used on some heavy frigates, which carried 26 guns. Fourth-rate ships carried 22 on their secondary batteries, and third-rates carried 32. First-rates carried thirty-four 24-pounders on their middle deck.
Sources and references[edit | edit source]
- French naval regulation, 1786
- (French) Jean Boudriot et Hubert Berti, L'Artillerie de mer : marine française 1650-1850, Paris, éditions Ancre, 1992 (ISBN 2-903179-12-3) (notice BNF no FRBNF355550752).
- (French) Jean Peter, L'artillerie et les fonderies de la marine sous Louis XIV, Paris, Economica, 1995, 213 p. (ISBN 2-7178-2885-0).
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