Energy-saving arrangement for twin-screw ships

Watercraft, comprising an arrangement for reducing the propulsion-power requirement of the watercraft, comprising a first propeller and a second propeller and comprising a first guiding device and a second guiding device, wherein, in the forward direction of the watercraft, the first guiding device is arranged in front of the first propeller, and the second guiding device is arranged in front of the second propeller, wherein the first propeller and the second propeller are attached to a first propeller shaft and to a second propeller shaft, wherein the first propeller shaft defines a first propeller axis and the second propeller shaft defines a second propeller axis, wherein the first guiding device and the second guiding device each comprise at least one fin, which extends from the propeller axes, wherein the fin of the first guiding device and of the second guiding device extends outwardly towards the sides of the watercraft respectively, wherein the first guiding device and the second guiding device each comprise exactly two fins, wherein the two fins of the first and second guiding devices are each connected to each other by a connecting bar, wherein the connecting bar is arranged along a length of the fins considered between 30% and 70% of the length of the fins, and wherein the connecting bar extends exclusively between the two fins.