It's a competition for racing with transfer boats (Weidlingen) in an obstacle course.
The pontoon sport is a traditional water sport in Switzerland. He is supported by the Eidg. Departement für Verteidigung, Bevölkerungsschutz und Sport (VBS). This sport mainly involves rowing and spiking on rivers and lakes with transfer boats and weidlings. In addition to strength, this sport also requires extensive knowledge of the element of water. In contrast to driving on the water, not only short times are expected of the competitors in pontooning, but also - as training for bridge building - enormous precision when driving.
The term comes from the pontoons, those hollow ship bodies used to build mostly makeshift bridges. There is a connection between the pontooning driving clubs (also pontooning sports clubs) and the pontooning in the military sector.