It is a multi-role patrol craft with twin funnels and a helicopter deck. These ships have main armament (40 mm L70 DP gun) at B position[further explanation needed]. Ships of the Mantilla class were the first vessels of the Argentine Coast Guard able to operate on board helicopters (AS.365 Dauphin or AS.350 Écureuil).[citation needed]
Starting 2014 the ships of the class undergone a modernization program at Tandanor which will extend its operating life for 30 years[1][2]