Battle of Daecheong
2009 CE.
Shown on the map at 37.825°, 124.700°.
The Daecheong incident, also known as the Battle of Daecheong, was a skirmish between the South Korean and North Korean navies near the Northern Limit Line (NLL) on 10 November 2009 off Daecheong Island.
Text from the Wikipedia article Daecheong incident, licensed CC BY-SA 4.0.