Dr Elias Boletis is currently Director Propellers and Transmission at Wartsila Propulsion. He has a Doctorate from the University of Brussels and M.Sc. degrees from the Technical University of Athens, Greece and the von Karman Institute of Fluid Dynamics. He is thirty-five years in the Industry at various positions, especially on product development and introduction of new technologies. In the last years, he gives emphasis on systems integration and implementation of energy saving technologies in marine applications. He is member of Imarest, ASME, SNAME and he participates in several CIMAC activities.