She is the first Argentine Navy ship to bear the name of San Blas Bay of in the south of Buenos Aires Province.

[n 2] She has a bulk cargo capacity of 9,856 m3 (348,100 cu ft) or 6,300 tons (e.g.: coal, cereals, live cattle), and can carry up to 140 containers.

[1][2] Bahía San Blas is powered by two 6-cylinder Sulzer 6 ZL 40/48 marine diesel engines of 3,200 horsepower (2,400 kW) each, driving two variable-pitch propellers; with a maximum speed of 16.5 knots (30.6 km/h; 19.0 mph).

In 1992 Bahía San Blas transported back from the Gulf of Fonseca the four Baradero-class patrol boats used under United Nations mandate ONUCA.

Since 2004, an Argentine contingent was deployed to Haiti under MINUSTAH mandate and Bahía San Blas has been used for logistic support making several voyages to the Caribbean island.