Ship's propeller has curved grooves on the propeller blade surface, in curves radially outwards from the hub, to interrupt the water flow and prevent cavitations giving reduced fuel consumption and preventing propeller damage

摘要

The ship's propeller has a number of grooves on the propeller blade (2) surface in the direction of travel, running in a curve outwards from the propeller hub at the shaft (1), over the whole propeller blade surface.