Toi invasion
The Toi invasion was the invasion of northern Kyūshū by Jurchen pirates in 1019. Wikipedia
Location: Hakata Bay
Start date: March 27, 1019
8 ships captured by Goryeo: 850+ (killed and abducted) 350 dead, 1,300 enslaved. Only 259 or 270 were returned by Koreans from the 8 ships.