The next two generations have both consolidated the Muir name in the marine industry and gone on to add lustre to the family's sailing record. In Jock's family, his daughter and son-in-law, Lynette and Wayne Denehey have owned and sailed boats on the Derwent. Ross Muir runs a successful marine business in Queensland, and his son, Jason, as mentioned, is competing in international yachting events. Greg Muir has also gone into the marine business in Hobart with a great deal of success. The eldest son John Muir, established a marine engineering business that has become one of the State's success stories, winning in 1989 both the Tasmanian and Australian Small Business Awards. This capped 18 years of steady achievement by his company, Muir Engineering Pty Ltd., manufacturers of winches and windlasses which are exported worldwide. John first went to sea with his father in 1959 aged 14. He also contested his first Sydney-Hobart race in that year on board Lass O'Luss, skippered by John Colquhoun.
John Muir at Muir Engineering, Kingston. Winner of the Telecom Australian Small Business of the Year award in 1989. The plant at Kingston was built in 1977, five years after Muir's had, commenced the manufacturing of its first marine winches.