Harleston first appears in Lloyd's Register in 1813 with Ma__on, master, Mestaer, owner, and trade London transport.

[3] In 1820 the executors of the estate of Peter Everitt Mestaer sold Harleston to Thomas Ward (or Wood), London.

[4] Harleston sailed on her first whaling voyage in 1821 under the command of Isaac Brightman, and bound for Timor.

[2] Harleston sailed on her second whaling voyage on 10 May 1823 under the command of Captain Gulliver, bound for Timor and the Japans.

[5] On 26 March 1826 Harleston put into Mauritius in an unseaworthy state while returning to London from Timor.