Built by B.H.P. Shipbuilding and Engineering Works, Whyalla, South Australia, Launched Nov. 1976. Originally with gas turbine-electric propulsion. In 1986 turbines and electric motors removed and converted to single Wartsila diesel. I do recall in 1999 reading that Rotoiti lost engine power in Tasman Sea during bad weather due to fuel starvation resulting from contaminated fuel supply continually blocking the engine fuel filters. Great work by Chief Engineer saved the day I recall. Cheers.