 During the Naval operations in the American Revolutionary War, he commanded the 20-gun "Guyane", escorting convoys.On 17 August 1778, she fought against two ships of the line, two frigates and one cutter, yet managed to escaped.After war ended, he sailed again as a merchant, and joined the Navy again in 1787 after a reform of the status of officers from the ranks and files, as a "sous-lieutenant de vaisseau".