ARA Santiago Del Estero (S-12)
On 21 July 1960 she was transferred on loan to the Government of Argentina and was commissioned in the Argentine Navy as ARA Santiago del Estero (S-12). Along with ARA Santa Fe (former USS Macabi), she was used mainly for training. The conning towers of both submarines were later locally upgraded to improve hydrodynamics. Some years ago, Argentinian officials disclosed that a group of tactical divers had carried out an incursion on the Falkland Islands on board the Santiago del Estero in October 1966.
The submarine was returned to US Navy custody, 1 September 1971, to be struck from the Naval Vessel Register, sold outright to Argentina, and then broken up for use as spare parts.
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