She made one voyage to England for the British East India Company (EIC) in 1801.

EIC voyage (1801): Captain John Power sailed from Madras on 17 March 1801.

Thetis reached the Cape on 17 July and St Helena on 19 August.

[6] Thetis did not appear on a list of ships built in India that transferred their registry to Great Britain prior to 1814.

Thereafter, British ships were then free to sail to India or the Indian Ocean under a licence from the EIC.