Louis-Emile Bertin was a French Navy engineer, one of the foremost of his time, and a proponent of the "Nouvelle Ecole" of light, powerful warships. He was born in Nancy, France in 1840. This article is about the city in France named Nancy. ...
From 1886, Emile Bertin was dispatched to Japan for 3 years, where he help build up the Imperial Japanese Navy, making a decisive contribution to the Japanese success in the 1894 Sino-Japanese war. He also directed the construction of the arsenals of Kure and Sasebo. 1886 is a common year starting on Friday (click on link to calendar) // Events January 9 - The United States of America is 40,000 days old. ... Ensign of the Imperial Japanese Navy. ... 1894 was a common year starting on Monday (see link for calendar). ... Japan and Qing China fought the First Sino-Japanese War (or the Qing-Japanese War or Sino-Japanese War (1894-1895)), primarily over control of Korea. ... Kure can refer to: Kure, Hiroshima (呉), a city in Hiroshima prefecture, Japan Kure Atoll Kure Beach Kure, Turkey This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Sasebo (佐世保市; -shi) is a city located in Nagasaki, Japan. ...
Upon his return to France, he was promoted to Director of the School of Naval Engineering (Ecole du Génie Maritime). In 1895 he became the Director of Naval Construction (Directeur des Construction Navales).
Emile Bertin invented the twin-oscillographer (to study roll and pitch).
He also wrote several books:
"Données Expérimentales sur les vagues et le roulis" (1874)
"La Marine à Vapeur de Guerre et de Commerce" (1875)
"Les Grandes Guerres Civiles du Japon" (1894)
"Chaudières Marines, Cours de Machine à Vapeur" (1896)
Bertin, then aged 45, was a promising but still mid-level naval constructor; this was an extraordinary opportunity, as his wife later noted, to have an entire fleet signed with his name.
The Bertin household becomes a centerpiece for the expatriate community, and is often the scene of `europeanization' for Tokyo's nobles.
Bertin's fleet was conceived around the tactic of the line-ahead formation, at the time untested for modern warships; this went against the then-popular line-abreast formation, which was initially preferred in Japan as the 'samurai way' of charging straight into battle (Bertin was eventually vindicated at the Yalu).
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