Ships:[2] 3 corvettes 5 brigs 2 brigantines 2 schooners 2 gunboats Ships:[2] 1 corvette 4 brigs 2 schooners 12 gunboats The naval Battle of Punta Colares, also known as the Battle of Corales, was the first major naval engagement of the Cisplatine War.

[5] After war broke out between the Empire of Brazil and the United Provinces of the Río de la Plata on 10 December 1825,[6] the Brazilian government responded by imposing a naval blockade on the port of Buenos Aires on 31 December 1825, aiming to cripple Argentine finances.

[7] In the early morning of 9 February 1826 the Argentine squadron left the port of Buenos Aires and made its first attempt to break the blockade.

Admiral Rodrigo Lobo gave orders to the Brazilians to lift the anchors and set sail.

Admiral William Brown then planned a combined attack against the city of Colonia del Sacramento, which was controlled by the Brazilians and was under siege by troops on land, on 25 February 1826.