- Thewaterwasthrashingandchurningaboutunderthepropellers.Someresembledwindmills,animalcagesorshippropellers.Theship'spropellerschurnedthewavestofoam.TomeettheneedsofMarineenergysavingsupportwrappingsareaddedtotailshaftswhichareintheshipswithdoubleprop...
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