After a month at Clyde, Empire Cheetah set out a third time for North America in convoy ON 7 which, although dispersed mid-ocean, lost no ships to submarines. Empire Cheetah successfully reached her destination of Boston on 3 September. From there she made her way to Philadelphia on 3 October, and on to Sydney on 23 October. There she joined convoy SC 51 sailing for Holyhead and Manchester the same day with a cargo of grain, steel, and cotton. She arrived at Holyhead on 8 November, but departed for Liverpool three days later. After returning to Holyhead later in the month, Empire Cheetah sailed in convoy BB 106 to Barry, where she arrived on 1 December.
