In 1806 she sailed under the flag of the United Kingdom on a voyage as a slave ship in the triangular trade in enslaved people.

Transporting enslaved people: Captain John Mitchell acquired a letter of marque on 7 July 1806.

[3] Between 1 January 1806 and 1 May 1807, 185 vessels cleared Liverpool outward bound in the slave trade.

Although Tartar had been sailing from England since 1806, she did not appear in Lloyd's Register (LR) until 1808.

[6] On 23 November 1805 Tartar, Mitchell, master, arrived at Liverpool from Bahia.

Lloyd's List reported on 20 December that Tartar, Mitchell, master, had grounded at Seacombe in the Mersey while on her way to the Braziles.

[1] As Tartar, Wilson, master, was sailing from Liverpool to Africa, on 31 January 1814 she fell prey to the French frigate Jahde.

Jahde had already captured William & Margaret, of and from Londonderry, bound to Grenada, and a Portuguese schooner, both of which she burnt.