^The (pre-metric) French foot was 6.575% longer than the equivalent English foot.
References
Roche, Jean-Michel (2005). Dictionnaire des bâtiments de la flotte de guerre française de Colbert à nos jours 1 1671 - 1870. p. 223. ISBN978-2-9525917-0-6. OCLC165892922.
Nomenclature des Vaisseaux du Roi-Soleil de 1661 a 1715. Alain Demerliac (Editions Omega, Nice – various dates).
The Sun King's Vessels (2015) – Jean-Claude Lemineur; English translation by François Fougerat. Editions ANCRE. ISBN978-2903179885
Winfield, Rif and Roberts, Stephen (2017) French Warships in the Age of Sail 1626-1786: Design, Construction, Careers and Fates. Seaforth Publishing. ISBN978-1-4738-9351-1