 Komatsu was responsible for the chassis and IHI Aerospace, as Nissan's Aerospace Division has since been renamed, for the launcher and its rockets.15 Type 75 wind measurement vehicles were built on the same chassis to provide weather information for the rockets.In 2001 Japan reported to the United Nations Office for Disarmament Affairs that 61 Type 75s were in service as well as 13 wind measurement vehicles.