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Delivering Innovation to the Marine Industry

Shaft Alignment

The propulsion shaft of a ship transfers engine power to the propeller. Several bearings support the shaft and connect it to the hull structure. The loads applied on the shaft beam are:

  • Hydrodynamic forces and moments produced by the propeller
  • Weigh of the propeller and shaft

Using our advanced structural analytical tools, we can calculate the shaft's linear and angular deformations in order to avoid its misalignment, by taking into account bearing positions and stiffness. In addition, it is possible to calculate: the deformation of the stern (hull deformation) and, consequently, the displacement of the bearing position, which strongly affects the shaft's alignment. Furthermore, we will be able to evaluate if the shaft design comply with the various classification society rules.