Career
Fournier served as a naval military chaplain on a ship of the line, and acquired a strong knowledge of technical and naval matters. In 1642, he published the treaty Hydrographie, where he attempted to provided a scientific foundation to the design of ships. At the time, results like Couronne or HMS Sovereign of the Seas were obtained by empirical trials and errors.
He also authored a Treaty of fortifications or military architecture, drawn from the most estimated places of our times, for fortifications, whose original edition was published in Paris in 1648 by Jean Hénault at the Salle Dauphine of l"ange gardien.
Another edition was published in 1668 in Mayence by Louis Bourgeat. Georges Fournier taught René Descartes.