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How do they make ship driveshafts that run from engine to propeller waterproof when they exit the inside of the ship and enter the water?
Wiki User
∙ 10y ago
at least in small scale, the propeller shaft is run through a tube almost the same size as the shaft but filled with a water proof grease and held in the tube by a cap at the end, (much like a hydraulic piston, it can travel through it but doesn't leak fluid) there are also water tight bearings that the shaft can be ran through. i cant imagine large scale would be much different
Wiki User
∙ 10y ago
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