HMS Swallow was a brig-sloop of the Royal Navy, built by Richard Symons, Little Falmouth as the packet ship Marquis of Salisbury for Captain Sutton, launched in 1819 and acquired by the Royal Navy in July 1824.

Chartered to carry free colonists and cargo to South Australia, she sailed from Portsmouth under the command of Captain Alexander Allen, arriving in South Australia on 22 April 1837.

South Australian was wrecked in Rosetta Harbor, Encounter Bay on 8 December 1837, after she broke her anchor during a storm.

[3][4] The wreck site was located in April 2018 by a team including personnel from the following organizations – the Department for Environment and Water, the Silentworld Foundation, the South Australian Maritime Museum, the Australian National Maritime Museum, Flinders University Maritime Archaeology Program and the MaP Fund.

[5] On 5 July 2018, a protected zone was declared under the state's Historic Shipwrecks Act 1981 over the wreck site at 35°34.641′S 138°36.213′E / 35.577350°S 138.603550°E / -35.577350; 138.603550.