A fishing boat capsized off the coast of Jeju Island on Wednesday. (Yonhap)
A fishing boat capsized off the coast of Jeju Island on Wednesday. (Yonhap)

A fishing boat capsized off the coast of Jeju Island on Wednesday, prompting a large-scale rescue operation by the coast guard, according to officials.

According to authorities, a distress signal was received at 7:56 p.m. from the 32-ton fishing vessel from approximately 12 kilometers southwest of Pyoseon-myeon, Seogwipo.

Based on the ship's departure records, 10 crew members, including one Indonesian and three Vietnamese nationals, were aboard.

Of those, five -- the captain and the four foreign crew members -- have been rescued, authorities said.

The rescued individuals were reportedly not in life-threatening conditions. The coast guard is continuing with the search and rescue operation. (Yonhap)