ARA Rosales (P-42) is the second ship of the MEKO 140A16 Espora class of six corvettes built for the Argentine Navy.

The Argentine Navy struggles to meet maintenance and training requirements because of financial problems and import restrictions.

[8] Rosales participated in several naval exercises and conducted fishery patrol duties in the Argentine exclusive economic zone, capturing two illegal fishing ships in 1992.

[6] In May 2024, Rosales, in conjunction with her sister ship Espora and the destroyers La Argentina and Sarandí, as well as the offshore patrol vessels Bartolomé Cordero, Piedrabuena and Almirante Storni, was tasked to participate in joint exercises with the US Navy's George Washington carrier task group.

[11] In August 2024, Rosales, her sister ship Espora, as well as the destroyers Sarandí and La Argentina, engaged in joint exercises with the Brazilian Navy.