Four sailors went missing after a fishing boat overturned in waters near South Korea's southern resort island of Jeju, Yonhap news agency reported Tuesday citing the country's coast guard.The 29-ton fishing vessel, carrying two South Korean and two foreign crew members, went out of contact at about 2:40 a.m. local time (1740 GMT Monday).Rescuers arrived at the scene in waters some 6.8 km southwest of Mara Island, just south of Jeju Island, around 5:08 a.m. local time (2008 GMT Monday) and found the fishing boat capsized.No crewman had been found in eight rounds of underwater search due to the bad weather condition that discouraged rescuers from going inside the boat.The coast guard sent a patrol ship and an aircraft to the scene for search operations, joined by navy ships and private fishing boats.Four sailors went missing after a fishing boat overturned in waters near South Korea's southern resort island of Jeju, Yonhap news agency reported Tuesday citing the country's coast guard.The 29-ton fishing vessel, carrying two South Korean and two foreign crew members, went out of contact at about 2:40 a.m. local time (1740 GMT Monday).Rescuers arrived at the scene in waters some 6.8 km southwest of Mara Island, just south of Jeju Island, around 5:08 a.m. local time (2008 GMT Monday) and found the fishing boat capsized.No crewman had been found in eight rounds of underwater search due to the bad weather condition that discouraged rescuers from going inside the boat.The coast guard sent a patrol ship and an aircraft to the scene for search operations, joined by navy ships and private fishing boats.