Mezue ahịrịokwu na-esonụ: N'ọnwa Febụwarị 1772, e buliri Trémigon n'ọkwa onye isi, ma nye ya iwu nke egbe 64 "Alexandre", na ndị agha n'okpuru Orvilliers. N'abalị nke 23 ruo 24, "Alexandre" kewapụrụ onwe ya site na ụgbọ mmiri, ma si otú a ghara isonye na Agha Ushant na 27 July 1778. A dọrọ Trémigon aka na ntị mgbe emechara nnyocha. N'afọ sochirinụ, o sonyere na
Ụgbọ mmiri nke afọ 1779.