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Balangay, also spelled barangay, is a type of lashed-lug boat built by joining planks edge-to-edge using pins, dowels, and fiber lashings. They are found throughout the Philippines and were used largely as trading ships up until the colonial era. The oldest known balangay are the Butuan boats, which have been carbon-dated to 320 AD and were recovered from several sites in Butuan, Agusan del Norte.