Performance prediction of thrusters Conventional thruster performance is based on model scale measurements. ● Scaling of thruster performance is more complex than ducted propeller,due to strut and thruster house o Full scale performance of thruster unit can be based directly on state-of-the-art numerical calculations. ©Vartsila WARTSILA© Wärtsilä 9 Performance prediction of thrusters Conventional thruster performance is based on model scale measurements. Scaling of thruster performance is more complex than ducted propeller, due to strut and thruster house Full scale performance of thruster unit can be based directly on state-of-the-art numerical calculations