By at least 2000 BC, according to comparative reconstructions, their technology must have included the making of pottery, bark cloth, dug-out canoes, mat sails, ropes, fishing gear and anchors. What little evidence we have, based upon the widespread construction methods of Neolithic boats, suggests that they already had a boatbuilding technology based upon lashings, protruding pierced lugs, and a hollowed base for the hull with added planksd with maritime cultures