Traditional Thai dancers and Royal Navy officers in ancient warrior costumes took part in a colorful worship ceremony at the National Museum of Royal Barges in Bangkok on Thursday.

The ceremony comes ahead of royal barge procession along the Chao Phraya River on Oct. 24, which will conclude King Maha Vajiralongkorn’s accession to the throne.

The procession is reserved for the most significant of events.

Photos and video footage by Narong Sangnak.