Emma was a merchant vessel launched at Calcutta in 1809 that in 1810 served as a government armed ship in the British invasion of Île de France.

Initially, Emma was under the command of Captain Frazer Sinclair, trading between Calcutta, Bombay, and Madras.

[1][a] In 1810 Emma participated in the British invasion of Île de France as a "government armed ship" under the command of Lieutenant Street.

[1] Because she had served as a hired armed vessel and not just as a transport, Emma was entitled to share in the prize money for the campaign.

[b] The British government chartered Emma and eight other vessels as cartels to carry back to France the French troops that they had captured in these campaigns.

[12] Emma took on board General Decaen (the former governor of Mauritius), his family, and suite, sailing on 24 December 1810.

[1] In August 1811, presumably after her return from England, she was sold to Fairlie, Ferguson, & Co., of Calcutta, who appointed A.G.Noyes as her master.

[6] Whaling voyage #1 (1815-1816): Emma, Porter, master, sailed from England on 14 March 1815, bound for the Brazil Banks.

[5] Whaling voyage #2 (1816-1818): Emma, Captain Jarwood (or Garwood), sailed from England on 5 September, bound for the Pacific Ocean.

She had left Emma "on the Coast" with Syren, Coffin, master, Sir Charles Price, Grand Sachem, and Emerald.

[5] Whaling voyage #5 (1823-1825): Captain Riddell (or Riddle) sailed from England on 27 June, bound for Delagoa Bay.

Emma was reported on 13 July 1824 to have come to the Cape of Good Hope from Delagoa Bay with Riddell, his Chief Mate, and a number of seamen dead, and the crew ill. She was carrying 140 tons oil.

[5] At some point she embarked the crew of Udny, which had wrecked on 2 July at Inhambane Bay, Mozambique, on her passage from Calcutta and Madras for London.

[17] Lloyd's Register carried a notation that Emma's teak sheathing was badly wormed.

[5] Whaling voyage #7 (1827-1831): Captain Reynolds sailed from England on 29 August, bound for the Sandwich Islands.

Twelve crew sailed for Mahé, Seychelles on 18 September in the ship's long boat and were never again seen.

Whaling voyage #12 (1851-1853): Emma's owner was Wilson & Co. Captain J. Davies sailed from England on 7 January 1851.

[5] Merchant vessel: Emma reappeared in Lloyd's Register in 1854 with W. Mills, master, Wilson & Co., owner, and trade London–Australia.

Lloyd's Register for 1857 reported that Emma's owner was again T. Ward, and that she had undergone damage repairs in 1856.

[27] Emma, Captain Gravill, left the docks on 10 March and Dundee two days later to engage in sealing.