Battle of Islay
1838 CE.
Shown on the map at -17.020°, -72.016°.
The Battle of Islay (Spanish: Batalla de Islay or Combate Naval de Islay) occurred on January 12 and 13, 1838, during the War of the Confederation between Chile and the Peru–Bolivian Confederation.
Text from the Wikipedia article Battle of Islay, licensed CC BY-SA 4.0.