She made two voyages as a London-based slave ship in the triangular trade in enslaved people.

A privateer captured her as she was returning from her third whale-hunting voyage but the British Royal Navy recaptured her.

[6] 2nd voyage transporting enslaved people (1798–1799): Captain Clark sailed from London on 21 October 1798.

1st whaling voyage (1799–1801): Captain L. Chase (or Chace) sailed Harriet in 1799 and returned on 12 February 1801.

[8] 2nd whaling voyage (1801–1803): Captain L. (or Samuel Chase) sailed from London in 1801, bound for Walvis Bay.

Harriet, Coffin, master, was at Chile in March 1804 and then sailed from Peru to New Zealand, where she was by October 1804.

[9] As Harriot was returning from Port Jackson to London a Spanish privateer captured her, but HMS Dryad recaptured her and sent her into Waterford.

Lloyd's List reported in April 1810 that Harriet, Porter, master, had been taken and brought into Lima, where she was condemned.

[12] On 12 August 1809, the brig Rey Fernando VII found the British ship Harriet in the anchorage at Lengua de Vaca.