HMS Staunch was a Royal Navy 12-gun Archer-class gun-brig, built by Benjamin Tanner and launched in 1804 at Dartmouth, Devon.

[1] On 30 August 1806, Staunch sailed for the Cape of Good Hope, with orders to assist in the invasions of Buenos Aires and Montevideo.

[3] On 1 June, the Spanish privateer schooner Mosca de Buenos Aires, of four guns and 60 men, under the command of Juan Bautista Azopardo, outran Staunch and the brig Protector as they chased her upriver.

In 1810, Staunch was attached to Commodore Josias Rowley's squadron on Île Bourbon and from there was part of the blockading force under Samuel Pym that was almost totally destroyed at the Battle of Grand Port (20–27 August 1810) over possession of the harbour of Grand Port on Isle de France (now Mauritius).

[1][b] On 5 January 1811 Sir Francis Drake, Nisus, Iphigenia, and Hesper, participated in the capture of the French schooner Mouche.