On 29 August 1806 Pretty Lass sailed from Simon's Bay. She was one of several transports, under escort by , that were carrying troops for the British invasion of the River Plate. The last mention is that Pretty Lass (transport), Cummings, master, was sunk in the River Plate on 17 July 1807.Lloyd's List, no. 4191, - accessed 25 February 2014.
