The Rubber Design SMART-LINK flexible coupling (Stable Movement, Axial, Radial, Torsional ) is a newly developed coupling using rubber torque-links with interior cord inlays. The high degree of allowable displacements and associated low stiffnesses makes the SMART-LINK flexible coupling particularly suitable for the application with soft mounted flexible systems. The SMART-LINK flexible coupling is specifically designed for usage between the propeller shaft with a separate thrust bearing and the gearbox. However it's also well suited for waterjets, thrusters, alternators, electric motors and ( h ydraulic ) pumps. The single and dubble row torque-link design has an optimal torque capacity versus the smallest possible outside diameter. The SMART design of the coupling results in the smallest possible built-in length with maximum flexibility.