Here is the ingenious engine cooling water system. The prop blows water into the funnel that feeds the engine cooling system. The feed pipe keeps the prop out of the mud (sort of). Grit in the intake water doesn't matter because there is no impeller blade.

Here is the ingenious engine cooling water system. The prop blows water into the funnel that feeds the engine cooling system. The feed pipe keeps the prop out of the mud (sort of). Grit in the intake water doesn't matter because there is no impeller blade.