The boat is usually made of Rakum (wintergreen), Thong Lang (prickly) or banana trunks, decorated with 12 dozen of wooden doll-oarsmen. "Krathongs" containing dolls, hair, bits of finger nails, areca and betel nuts, dry provisions, and utensils etc. are placed on the boat.  Boat Launching Ceremony is celebrated to bid gods' and holy spirits' protection from evil.