The Shackleton–Rowett Expedition (1921–22) was Sir Ernest Shackleton's last Antarctic project, and the final episode in the Heroic Age of Antarctic Exploration. The venture, financed by businessman John Quiller Rowett, is sometimes referred to as the Quest Expedition after its ship Quest, a converted Norwegian sealer. Shackleton's original plan had been to explore the Beaufort Sea sector of the Arctic Ocean, but this was abandoned after the Canadian government withheld financial support. Quest, smaller than any recent Antarctic exploration vessel, soon proved inadequate for its task, and progress south was delayed by its poor sailing performance and by frequent engine problems.