Akasaka Diesels Ltd. engages in the manufacture and sale of ship diesel engines, and various industrial machinery and equipment. Its products include primary and on-board support engines for ordinary cargo and passenger ships and fishing boats; and diesel engines for power and electricity generation; shipping equipment and ocean observation equipment; transportation, civil engineering and building machinery; pollution prevention equipment; measurement devices and astronomical observation equipment for use in satellites; forged goods and steel products. It also engages in the leasing and management of goods and real estate businesses. The company was founded by Otoshichi Akasaka in May 1910 and is headquartered in Tokyo, Japan.