The first sea-worthy boats were thought to have been invented around 800,000 years ago by Homo erectus. In human records, the first sign of a boat was found in a rock carving from approximately 10,000 BCE with depictions of a 20-man reed boat.
As of 2014, the oldest boat that has been physically found is called the Pesse canoe, which is thought to have been constructed around 8000 BCE. The Pesse canoe was found in Holland and measures 3 meters long. Boats constructed during ancient times are speculated to have been little more than sea-worthy rafts with wood or bamboo tied together using palm fibers or vines.