At the end of 2009, the Department of Defence released a request for tender for modification of "Success" into a double hull vessel, allowing her to meet International Maritime Organization standards for oil tankers. The tender was awarded to Singapore-based ST Marine (a subsidiary of ST Engineering), with the conversion to be made during 2011. The ship sailed to Singapore in November for a naval exercise, after which she was to enter dock for the 14-week conversion, but problems in the contract delayed the dockyard start date, and "Success" was ordered back to Sydney, via in Western Australia, so the ship's company could take leave with family while the contract was finalised. Work on the ship started in late December 2010, with the main conversion work completed by the end of April 2011. In May 2011, a civilian contractor working on the ship died after falling overboard. "Success" left Singapore in late May, and returned to Sydney.