A whipstaff, sometimes called a whip or kolder-stok, is a device used in 16th- and 17th-century Europe to control the movement of a large sailing ship. Its development preceded the invention of the more-complex ship`s wheel and followed the simple use of a tiller to control the steering of a ship underway. Before the 16th century most sailing ves.... Found on http://en.wikipedia.org/wiki/Whipstaff