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BATTLE // March 2, 1811

Battle of San Nicolás

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Overview

The Battle of San Nicolás was a naval engagement on 2 March 1811 on the Paraná River between the Spanish royalists from Montevideo, and the first flotilla created by the revolutionary government of Buenos Aires. It was the first engagement between the two fleets in the Río de la Plata region since the revolution, and a royalist victory.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

The Battle of San Nicolás was the first naval engagement on the Paraná River between royalist forces from Montevideo and the newly established revolutionary flotilla of Buenos Aires. As the first fleet action in the Río de la Plata region since the outbreak of the Argentine War of Independence, it tested the capacity of the revolutionary government to contest control of the river system. The royalist victory under Romarate over Azopardo's flotilla demonstrated early limits of Buenos Aires's naval capability and left Montevideo's forces in a stronger position to project power along the Paraná, a waterway of strategic importance to both sides in the broader struggle for the Río de la Plata.

Commanders (2)

Provinces of the Río de la Plata

Viceroyalty of the Río de la Plata

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Last verified June 2026
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