A SigmaDrive can radically reduce, even eliminate entirely, noise and vibration created by an imperfect alignment between a propeller shaft and an engine. SigmaDrives are designed to fit virtually all boats from yachts to workboats, canal narrow boats to military vessels; in fact pretty much any powered vessel with engines up to 1300hp. They are extremely easy to fit, requiring no modifications to the craft, which can usually be equipped with the drive unit whilst still in the water. Together with its anti-noise and vibration abilities having a SigmaDrive on your vessel will also ensure that seals and bearings are always perfectly aligned, reducing wear, and guaranteeing a longer trouble-free life for all associated components. For more information go here:- https://www.bruntonspropellers.com/sigmadrive