Ramsay Marine can install any Bow thruster and bow thruster tube wether it is electric or hydraulic. This installation shown is for a 108' Burger Yacht. The tube was rolled from Aluminum plate and welded. In this instance an electric thuster was removed and a hydraulic one replaced it. The new thruster required a different size tube to match the prop. A bow thruster is a luxury that no boat should be without, call and price yours now.