The South Korean ferry Seohae (Korean: 서해 페리호; Hanja: 西海페리號) sank on October 10, 1993 in the Yellow Sea near Wido, Buan County, North Jeolla Province.

[3][4] Seohae was a ferry of 110 gross tons, with a maximum capacity of 221 passengers.

At the time of the incident, "Seohae" was carrying 362 people (355 passengers and seven crew), an excess of 141, and the weather condition was harsh with winds of 10 to 14 metres per second (22 to 31 mph) and wave height of 2 to 3 metres (6.6 to 9.8 ft).

The rope, left behind by fishing operations, may have made the ferry heel over onto her starboard side.

[5] Divers were employed to help recover the bodies of deceased victims after the vessel sank.