Duchaffault was promoted to Ensign in 1733. He was appointed to positions ashore in Brest, before returning to Astrée in 1737, fighting the Salé Rovers.[1] In 1739, he served on the 16-gun Méduse in the Baltic, then on the 46-gun ship of the line Parfaite in the Caribbean in 1740, and on the 64-gunSaint Michel between 1742 and 1744.[1]
He was promoted to Lieutenant in 1746.[2] In February 1747, he was given command of the 40-gun frigate Atalante, and cruised off Saint-Domingue with Sirène, under Guichen.[3] Later that year, on 25 October 1747, he distinguished himself at the Second Battle of Cape Finisterre.[2] In 1751, he captained the 24-gun frigate Friponne[4] for missions off Saint-Domingue.[1]
He was promoted to Captain in 1754,[2] and given command of the 80-gun Formidable.[1] He returned to Atalante,[5] part of a squadron under Aubigny,[2] taking part in the capture of HMS Warwick on 11 March 1756.[6] He also part in the Siege of Louisbourg,[2] commanding Dragon.[7] In 1758, he was in command of a division, and he captured the East IndiamanCarnarvon.[8]
In 1779, he commanded a division in the Armada of 1779, with his flag on Ville de Paris.[1] He then served as commander of the naval forces in Rochefort. He was promoted to Vice-amiral on 1 January 1792.[12]
During the Reign of Terror, Duchaffault was arrested and imprisoned. He died in captivity in Nantes on 29 June 1794.[2]
Legacy
In 1931, naval historian André Vovard authored the biography L'Amiral du Chaffault.[13][14] That same year, Paul Chack published L'homme d'Ouessant, Du Chaffault.[15]
Rue du Chaffault in Paris and Rue Amiral-du-Chaffault in Nantes are named in his honour.