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PROPULSORS & GEARS• Wärtsilä Fixed Pitch PropellersWärtsilä fixed pitch propellers are manufactured by the Wärtsilä CMEZhenjiang Propeller Co.,Ltd joint venture company. At this facility fixedpitch propellers with diameters from 1 m to 12 meters and up to 120tons weight can be produced. As at the end of 2014, more than 2 000propellers have been produced since the joint venture company wasestablished in 2004. Furthermore, it is able to take advantage of theextensive experience and databases of LIPS and Wärtsilä with regardto propeller design and production technology.The propeller and shaft line design tools are based upon longexperience with calculations, model test results, Computational FluidDynamics (CFD), and full scale results.Propeller efficiency, noise and vibration requirements are the mainconsiderations for propeller designs that can be applied for a widevariety of speeds and power densities, and for any type of ship. Theunique Wärtsilä Cunial ® propeller material provides excellent casting,machining and fatigue properties.132