The ATCruiseSpeed RotorSwing stabilizer provides roll damping while cruising starting at 3 knots. This stabilizer is a cost effective solution for displacement vessels that require powerful roll damping while cruising at lower cruising speeds. The patented RAKE function, which brings the Rotors to a predefined smaller angle towards the aft, can be enabled at higher cruising speeds. This RAKE function significantly lowers drag without any significant loss of roll damping.

This video was shot on a Fairline Squadron 55‘ (17m) with a natural roll period of 3 seconds. The RAKE mode was enabled during this test. As you can see, the roll damping results were very impressive while fighting a beam sea of 1 meters.

The velocity of the vessel was 10 knots. RotorSwing Marine offers sea trials for those that can only believe while feeling it for themselves!

Roll Damping Through Magnus Effect

As opposed to fin stabilizers, this roll damping system generates high lift forces while cruising at lower cruising speeds. Since the Rotors are placed horizontally, all of its liftforces are being used to stabilize your yacht. This is another great benefit compared to other roll damping systems.

High Lift Forces For Low Cruising Speeds

The effectiveness of this invention is build around the Magnus effect. Most people are familiar with top-, and bottom spin effect driven balls in sports such as tennis and soccer. Dr. Gustav Magnus, through which we received the name of this effect, postulates that a rotating forward moving cylindrical object generates an upward or downward force. The denser the medium, the higher the lift force. Water is 784 times denser than air which is one of the pleasant side effects for making it the most powerful roll damping system on the market.