Battle of Abtao

7 February 1866, Abtao island, Gulf of Ancud, Chiloé

Inconclusive

The allied Peruvian–Chilean squadron sheltered in shallow channels behind Abtao island, where the two Spanish frigates could not follow. The two sides exchanged fire at long range; the Spanish gunnery was more accurate and damaged the allied ships, but neither side could close, and the Spanish withdrew.