(a bangka) made from a single log. The keel is also known as a baroto which is the origin of one of the alternative names for balangay in the Visayas. The Butuan balangay boats differ from later balangay designs in that they do not have a true keel. Instead, they have a central plank fitted with three parallel lines of thin lugs which serve as additional attachment points for lashings.

The outer shell of the hull is built first by fitting strakes on each side of