 The original plan called for six MEKO 360H2 destroyers, four of them to be built in Argentina, but the plan was later modified to include four MEKO destroyers built in Germany and six corvettes built in Argentina, for anti-surface warfare and patrol operations.The ships were designed by the German shipyard Blohm + Voss as a development of the Portuguese Navy's s, designed by the Portuguese naval engineer Rogério de Oliveira in the late 1960s.All the ships of the class were built in Argentina at the AFNE "Río Santiago" shipyard, close to the city of La Plata in Buenos Aires Province.