Battle of Chilcheollyang
1597 CE.
Shown on the map at 34.818°, 128.566°.
The Battle of Chilcheollyang was a naval engagement fought during the night of 28 August 1597, as part of the Imjin War. In this battle, the Japanese fleet decisively defeated the Joseon navy, destroying nearly the entire Korean fleet.
Text from the Wikipedia article Battle of Chilcheollyang, licensed CC BY-SA 4.0.