Chilean Navy defeats Peruvian squadron at the Battle of Angamos

Background. The battle marked the culmination of a five-month naval campaign in which the Chilean Navy sought to eliminate its Peruvian counterpart. Prior to this engagement, the Peruvian fleet had lost the armored frigate Independencia to the wooden schooner Covadonga after the naval battle of Iquique of 21 May. During the night, Peruvian warships were sailing off the Chilean coast toward Arica when they saw the lights of Antofagasta.

Engagement. Two Chilean armored frigates, led by Commodore Galvarino Riveros Cárdenas and Navy Captain Juan José Latorre, engaged the Peruvian monitor Huáscar. The Chilean forces battered the monitor and subsequently captured it. Rear Admiral Miguel Grau Seminario, commanding the Huáscar, died during the struggle. The capture of the vessel and the loss of its commander were decisive factors in the outcome.

Consequences. The death of Admiral Grau and the loss of the Huáscar gave the Chilean navy uncontested control of the Pacific coast, ending the naval campaign. This dominance prevented Peru or Bolivia from initiating land attacks on Chilean forces in Antofagasta due to the inability to supply them by sea. The naval victory contributed significantly to subsequent land campaigns in the Atacama Desert.