Moriès-Castellet joined the Navy as a Garde-Marine on 6 July 1735.[2] He was promoted to Lieutenant on 23 May 1754.[2]
In 1758,[1] he was given command of the 26-gun frigate Oiseau.[5] In September 1759,[6] he captured the British merchantman Prince of Wales,[7] and brought her back to Toulon.[6] In 1760,[1] he transferred to 32-gun Chimère,[8] before returning to Oiseau from 1761 to 1762.[1] He cruised off the coast of Spain and to Malta.[9]
On 15 January 1762, he was promoted to Captain,[2] and he took command of the 50-gun Fier.[9]
Roche, Jean-Michel (2005). Dictionnaire des bâtiments de la flotte de guerre française de Colbert à nos jours. Vol. 1. Group Retozel-Maury Millau. pp. 372–373. ISBN978-2-9525917-0-6. OCLC165892922.