a later edition of Hoste's treaty Paul Hoste, a Jesuit priest and a mathematician, aged 45, publishes two masterworks : L’Art des Armées Navales ou Traité des Évolutions Navales and Traité de la Construction des Vaisseaux. The first one is especially original and even foundational. Hoste's career looks like Georges Fournier’s one, sixty years ago. They both are Jesuit priests and mathematicians. They both became chaplains for the Atlantic fleet, so they were scholars scrut