1. As an introduction the cavitation is defined and explained physically.n2. Erosion on ship propellers is described and some photographs are given.n3. The mechanics of cavitation is treated, reference to different experiments in hydraulic research and to mathematical theory being made.n4&5. Cavity shapes are defined hydrodynamically, and the appearance on the model screws are outlined and illustrated by photographs from cavitation tunnels.n6. Views are given on which type of cavitation in the water will give erosion on propeller blades, and an assumption is made on the effect of combined sheet and burbling cavitation.n7. Principles are developed for design and for precautions to be made in order to avoid serious cavitation erosion.
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