Atlas entered Lloyd's Register in 1812 with W. Parker, master, changing to Fairclough, T. Barrick, owner, and trade London transport.

She had on 17 August repelled an attack by the American privateer York, of 14 guns and 150 men.

[5] Convict voyage (1816): Under the command of Walter Meriton, she sailed from Portsmouth, England on 23 January 1816, and arrived at Port Jackson on 22 July.

[8] On 29 July 1817, Atlas dropped the pilot at Sandheads, at the mouth of the River Ganges, as she sailed from Calcutta to London.

[c] Lloyd's Register continued to carry Atlas, with Meriton, master, and trade London—Botany Bay, to the 1821 volume.