 The locomotives were used mostly between Regatta Point-Dubbil Barril and Rinadeena-Queenstown, and had their cowcatchers removed to facilitate transfer over the rack section of the line.DS 1 was first to be withdrawn in 1953, and was used as spare parts for Regatta Point-based DS 4, which was withdrawn later that year.These locomotives were fired on a mix of 60% Tasmanian soft coal and 40% NSW hard coal, which delivered a better result in steaming.