On March 13, 1770, the Royal Navy sloop-of-war HMS Swift ran aground and sank in the waters of Puerto Deseado, Santa Cruz, during an emergency maneuver in a storm. The vessel had been in Patagonian waters for only a few days after departing the Falkland Islands. Most of her crew survived, but the ship settled beneath meters of water and sediment — where it would remain undisturbed for more than two centuries.
The rediscovery came in the 1980s, when a group of local amateur divers spotted the hull remains. The find marked the beginning of underwater archaeology as a formal scientific discipline in Argentina. The city’s museum today bears the name of one of those pioneering divers.
The Underwater Archaeology Program of the National Institute of Anthropology and Latin American Thought (INAPL) has conducted systematic excavations at the site since the late twentieth century. Studies revealed that the vessel’s structure retains an exceptional proportion of its original hull for a wreck of that age.
Among the artifacts recovered are artillery pieces, navigation instruments, everyday shipboard objects, and an extensive collection of metallic items that enabled unique archaeometallurgical analyses. These studies shed light on 18th-century British naval construction technology and were compiled into an academic book published by Archaeopress in 2014 by researcher Nicolás Carlos Ciarlo.
The Museo Histórico Regional Mario Brozoski in Puerto Deseado displays a portion of the recovered objects in permanent exhibitions that explain the excavation and conservation process. In 2019, the museum was renovated and reopened with a landmark display titled “200 Years Under the Sea,” making the full story of the wreck accessible to the public.
The site also stands as a reference point for technical diving tourism. Puerto Deseado’s visibility — enhanced by southern Patagonian currents — draws experienced divers seeking one of Patagonia’s most historically significant underwater sites. Access to the archaeological sector, however, is regulated to protect the integrity of the deposit.
Today, the HMS Swift is far more than a shipwreck: it is a submerged historical archive that continues to generate knowledge about the 18th-century South Atlantic, and that has placed Argentina among the leading countries in nautical archaeology in the region.
Sources
- CONICET Institutional Repository: Archaeometallurgy of an 18th-century shipwreck site
- Repositorios Digitales MINCYT: Shipwreck archaeology - HMS Swift
- Academia.edu - Nicolás Ciarlo: The wreck of HMS Swift (1770): Maritime archaeology in Patagonia