Another boat Jock successfully sailed was the l6-foot skiff Wee Davie, in 1934 owned by D. Meredith. In the early fifties, Jock also sailed the comparatively new 8-metre yachts Sandra, Erica J and Norske (after the death of Charles Davies) on the Derwent in RYCT races. He has also competed in other offshore events during his racing career- the Brisbane-Gladstone, the Montague Island and more recenily the Sydney Southport on board John Muir's yacht Shonandra in 1987 and again in 1989. He says however, that nowadays he is a passenger merely along for the enjoyment of the cruise. Jock Muir has also participated in the "veterans" races which are held by the RYCT in several classes, but it is his record in the Sydney to Hobart yacht race that stands as testimony to his ability as a yachtsman. In 19 Sydney to Hobart races (from 1946 to 1971), he was forced to retire only once as sailing master. He finished first across the line on four occasions: 1949, 1953 (disqualified), 1955 and 1960. He won the race on elapsed time on two occasions: 1947 and 1948, becoming the only Tasmanian skipper to have achieved this goal. He was placed in the first three on corrected time on five occasions and finished in the first three across the line on eight occasions (including the disqualification).