WJK 515-516 were built for BP by Tulloch in 1971. WJK 515 returned from South Australia and was issued to traffic in 1985. (I don't know when it went there). WJK 541 was built for Golden Fleece (H C Sleigh) by Tulloch in 1975. It was taken over by Caltex in 1985. WJK 545 was ESSO's only standard gauge tanker in WA. Built in 1975, it was sold to BP in 1986. These four tankers were class ATKY in 2010. There are more images of these wagons here.

WJK Diagram