1st EIC voyage (1800–1801): Captain William Taylor Money acquired a letter of marque on 9 February 1800.

Walthamstow reached Madras on 7 July, Penang on 23 August, and Malacca on 22 September, and arrived at Whampoa Anchorage on 5 November.

Homeward bound, she crossed the Second Bar on 15 January 1801, reached St Helena on 15 April, and arrived at the Downs on 11 June.

[1] 2nd EIC voyage (1802–1803): Captain William Agnew sailed from the Downs on 6 March 1802, bound for Madras and Bengal.

[1] 3rd EIC voyage (1804–1805): Captain Donald Mcleod acquired a letter of marque on 2 March 1804.

She was at Point de Galle on 15 March reached St Helena on 27 June, and arrived back at the Downs on 10 September.

She reached Point de Galle on 15 March and St Helena on 15 June, and arrived back at the Downs on 6 September.

[1] 5th EIC voyage (1808–1810): Captain Thomas Jones acquired a letter of marque on 30 July 1808.

[4] Although she was not listed among the vessels participating in the initial phase of the British invasion of Java (1811), her movements suggest that she was part of the logistical support.