Battle of Hansan Island
1592 CE.
Shown on the map at 34.762°, 128.502°.
The Battle of Hansan Island (Korean: 한산도 대첩) and the following engagement at Angolpo took place on 15 August 1592. In two naval encounters, Korean Admiral Yi Sun-sin's fleet managed to destroy roughly 100 Japanese ships and halted Japanese naval operations along the southern coast.
Text from the Wikipedia article Battle of Hansan Island, licensed CC BY-SA 4.0.