The Voith Turbo Fin is a rotating cylinder at the end of the skeg. It ensures stable flow and increases lift by means of the larger angle of attack. As a result, significantly higher transverse forces can be achieved - a useful advantage on escort duties in particular. The steering force of a Voith Water Tractor with Voith Turbo Fin is 18% greater than that of a conventional tractor. See also Escort tug VELOX.