Baetgi is a banner raised on a boat to pray for a big catch and safety on the boat.
The banner generally comprises stripes of three or five colors and is called different names by region. Some banners serve simply as ornaments but most are religious, referred to as seonanggi, or guardian deity banner. They are also called gosagi, or ritual banner, because they serve as sacred entities that embody deities in village rituals.
When setting out for a catch, the boat owner raises the boat banner by the gate of his house then goes up to the village shrine for a ritual, after which he heads to his boat, accompanied by a percussion troupe, and erects the banner to hold the boat ritual baegosa.
During the village ritual of the first lunar month, boat owners carry their baetgi up to the village shrine and hold a ritual, then carry the banners to their boats for a fishing ritual (gaetje), a big catch ritual (pungeoje) or straw boat (ttibae) ritual. They also hold impuritycleansing rituals with the banner when poor catch continues or an unfortunate incident occurs on the boat. When returning with a full load of fish from a big catch, the boat sails back with the banner raised and percussion music is played on gongs and drums.