She made one voyage as an "extra ship", i.e., under charter, to the British East India Company (EIC).

Brunswick enters Lloyd's Register in 1795 with G. Ryland, master, Hurry & Co., owners, and trade London–India.

[a] On 1 May 1804 Lloyd's List reported that Brunswick, Drysdale, master, had had to put back to Portsmouth having lost her mainmast and having suffered other damage.

[8] The Register of Shipping for 1810 shows Brunswick with Simpson, master, Penton & Co., owners, and trade London transport.

[2] Brunswick, Simpson, master, foundered in the Grand Banks of Newfoundland on either 21[9] or 27 July 1809 (sources disagree) while sailing from London to Quebec.