Shimose powder

Shimose powder(下瀬火薬,Shimose kayaku) was a type of explosive shell filling developed by the Japanese naval engineer Shimose Masachika (1860–1911).

Shimose was born in Hiroshima Prefecture and was a graduate of Tokyo Imperial University as one of Japan’s earliest holders of a doctorate in engineering. In 1887 he was hired by the Imperial Japanese Navy as a chemical engineer, and in 1899 was appointed head of a research unit to develop a more powerful type of gunpowder for use by naval artillery.