 On 23 April 1911, he set a Japanese record with a Blériot Aéronautique, flying 48 miles in 1 hour 9 minutes 30 seconds.Also in 1911, several more aircraft were imported and an improved version of the Farman III biplane, the Kaishiki No.1, was built and flown by Tokugawa in Japan.Tokugawa, together with fellow aviation pioneer Hino Kumazo promoted the new technology to the army.