GUYOU

FRANCE (see also List of Individuals)

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25.11.1843 Fontainebleau/F - 25.8.1916 Lannion/F

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Emile Guyou graduated from Ecole Navale, Lorient and continued at Ecole Borda in Brest, then the famous French naval school. For the following twenty years, Guyou was normally at sea, first in the Antilles and in Cochinchina, then taking part of a hydrographic campaign in Tunisia. In 1878 he returned to Cherbourg and was one year later appointed professor at Borda naval school. Jean-Charles Borda (1733-1799) was one of the greatest naval engineers of the 18th century and had given his name to various schools in France in the 19th century, such as in Brest from 1864 to 1890. Guyou there intended to stay for a moment and then retire in the countryside. Luckily for naval science, all came different.

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During his sea trips, Guyou had collected an impressive amount of hydrographical data. While staying at Ecole Navale he introduced original lectures in naval architecture, astronomy and navigation. He left Brest in 1885 to head the Hydrographical Service for the next 20 years. Following his 1877 paper on the Theory of the cylindrical wave, he developed the approach of Emile Bertin (1840-1924). Further works related to the stability of ships, and to submerged bodies in general. In 1887, Guyou presented a book on the Theory of naval engineering, one of the best overviews of the 19th century on this subject matter. He also generalized several results earlier published by Charles Dupin (1784-1873) relative to the keel surfaces. In the same year, Guyou published in the Mémoires a large paper on the development of naval geometry. He was awarded Prix Plumey in 1887 for his book and in 1891 Prix de la Marine. In 1894 he was elected Member of Académie des Sciences and in 1896 a Member of Bureau des Longitudes.

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_{Guyou, E. (1877). Théorie mécanique de la houle cylindrique simple et permanente. Revue maritime et coloniale 17: 1-39.}

_{Guyou, E. (1884). Des variations de stabilité des navires. Revue maritime et coloniale 24, 1-16, also Berger-Levrault: Paris.}

_{Guyou, E., Simart, G. (1887). Développements de géométrie du navire, avec applications aux calculs de stabilité des navires. Mémoires présentés par divers savants à l'Académie des Sciences, Paris 30: 1-68.}

_{Guyou, E. (1887). Théorie du navire. Berger-Levrault: Paris.}

_{Guyou, E. (1911). Nouvelles tables de navigation. Berger-Levrault: Paris.}

_{Picard, E. (1916). Le commandant Guyou. Annuaire Bureau des Longitudes: B1-B23. Pouret, C. (2006). Le commandant Emile Guyou. Archives, Institut de France: Paris. P}