The balangay (or balanghai) is a plank boat joined by carved-out planks edged through pins and dowels. Excavated extensively in Butuan, Agusan del Norte, these vessels date from 320 CE to 1250 CE. They prove early Filipinos possessed advanced pre-colonial seafaring, migration, an d trading capabilities reaching as far as China, Southeast Asia, and the Middle East. 

ARCHAEOLOGICAL DISCOVERIES

• First Excavation: The initial balangay was unearthed in 1976 in Barangay Libertad, Butuan City, carbon-dated to around 320 CE.  

• The Butuan Boats: At least 11 ancient boat sites have been identified, representing the largest concentration of lashed-lug boat remains from the Austronesian tradition.

• The "Mother Boat": A much larger, massive balangay hull estimated to be twice the size of earlier finds (around 25 meters long) was discovered later in Libertad, pointing to deep-sea capability and large-scale migration. 

CULTURAL AND HISTORICAL SIGNIFICANCE

• Origin of "Barangay": The word barangay—the smallest administrative political unit in the Philippines—originates from balangay, reflecting how early kin-groups traveled and settled together in communities aboard a single boat. 

• National Recognition: Declared a National Cultural Treasure and the country's National Boat, the balangay symbolizes early Filipino ingenuity, solidarity, and maritime heritage. 

• Modern Commemoration: Butuan City honors this legacy annually through the Balangay Festival held every May.