In 1675, he sailed on the King's vessels and was promoted Commander-in-Chief in 1698 for an expedition in the Southern seas. In 1699, he entered the Magellan Strait where he took possession of Saint-Louis le Grand Island and of the Dauphine Bay in the name of the King of France.
He was the first French man who passed Cape Horn from West to East in 1701and thus opened the commercial relationships with Peru and Chile. He also recognised a part of the Falklands during the said travel.
Later, he became Seneschal of Saint-Malo, Admiralty Lieutenant, Judge of farms and Captain General of the coastguard ships.
He died in Saint-Malo at 78 years old.