Canoa Indígena, Casco or Ubá in the Amazon region is the dugout canoe (Ubá is the indigenous name for “canoe”). Besides being used for fishing and means of transportation for children and how people reach the nearest school from rivers and streams. The Canoa Indígena is moved by oars, however may have a small tail outboard engine nowadays. It is typically made from trees as Jatobá, Andiroba, Itaúba or Tatajuba. The building is made by using the native techniques of a tree log cutting, carving, cleaning and controlled burn, to create the inside curves. The stern and the bow of the hull are worked with an ax at the beginning and later with an adze (“enxo” in Portuguese).
See this video Yanomani Indigenous Dugout Canoe