South Korean teams searched for nine people after a Chinese fishing boat capsized about 150 km (93 miles) southwest of Gunsan. Two crew were rescued by a nearby commercial vessel.
Authorities deployed patrol ships, helicopters and a plane; a fuel slick was sighted but no other debris. The Chinese consulate in Gwangju said 11 people were on board.
The accident followed another capsizing near Gageo Island a day earlier that killed at least two people and left three missing.
