C.D. Inman, an associate member of the (British) Institution of Civil Engineers, was employed at the harbour works in Cape Town from 1903 or earlier to 1906. In 1903 he became a foundation member of the Cape Society of Civil Engineers. In May 1906 he delivered a paper on "The reclamation wall, Table Bay harbour works" before the society. He was still listed as a member later that year, but was then living in Parkstone (now in Bournemouth), Dorset, England.