Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. During the Bakumatsu period, the Japanese government faced increasing incursions by ships from western nations, intent on ending the country's two centuries of national seclusion. These efforts cumulated in the landing of United States Commodore Commodore Perry in 1854, resulting in the Treaty of Kanagawa and the opening of Japan to foreign trade. The Tokugawa government decided to order modern steam warships and to build a naval training center as part of its modernization efforts to meet the perceived military threat posed by the navies of the western nations. The training center was established near the Dutch settlement of Dejima in Nagasaki, where maximum interaction with Dutch naval technology would be possible.

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