| 30-pounder long gun | |
|---|---|
 30-pounder without rigging. | |
| Type | naval gun |
| Place of origin | France |
| Service history | |
| In service | 19th century |
| Used by | French Navy |
| Wars | Invasion of Algiers, Battle of the Tagus, Battle of Veracruz |
| Production history | |
| Manufacturer | Factories of Saint-Gervais, Nevers and Ruelle |
| Unit cost | 1517.5 Francs |
| Specifications | |
| Mass | 3,035 kilograms (6,691 lb) |
| Length | 315.8 centimetres (124.3 in) |
| Barrel length | 282.9 centimetres (111.4 in) |
| Calibre | 164.7 mm[1] |
The 30-pounder long gun was a large piece of artillery mounted on French warships of the Age of Sail. They were the heaviest component of the unified system standardised on the 30-pounder calibre, replacing both the 36-pounder long guns in their usages, and even some 24-pounders.
- ^ Aide-mémoire de l'artillerie navale, p. 14