The Battle of Iquique was a naval engagement on 21 May 1879, during the War of the Pacific, where a Chilean corvette commanded by Arturo Prat Chacón faced a Peruvian ironclad under Miguel Grau. The battle occurred off the port of Iquique, Peru, and ended with the sinking of the Chilean wooden corvette Esmeralda by the Peruvian ironclad Huáscar after four hours of combat, marking a victory for Peru.