Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Yuzuru Hiraga was a career naval officer in the Imperial Japanese Navy, Doctor of Engineering and head of the engineering school of Tokyo Imperial University and a leading Japanese naval architect in the 1910s and 1920s, responsible for designing a number of famous warships, many of which would later see action during World War II.He participated in establishing the Chiba Institute of Technology from 1941. Hiraga was born in Tokyo and grew up in Yokosuka, Kanagawa although his family was from Hiroshima, where his official family registration was located. He graduated from what is now Hibiya High School, and entered the engineering department of Tokyo Imperial University in 1898, specializing in marine engineering. He was drafted into the Imperial Japanese Navy in 1899, but allowed to continue his studies, and graduated in 1901. He immediately went to work for the Yokosuka Naval Arsenal as a design engineer for new warships. He was transferred to the Kure Naval Arsenal in 1905.

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