Paddling, in regard to waterborne transport, is the act of propelling a human-powered watercraft using at least one hand-held paddle, or paddling directly with the hands as in traditional paddleboarding. The paddle, which consists of one or two blades joined to a shaft, is also used to steer the vessel via generating a difference in propulsion between the two sides of the watercraft. The paddle is not connected to the boat, unlike in rowing where the oar is attached to the boat.