ENGINE OVERLOAD:
The inevitable roughening and fouling of the hulls of older vessels can drastically increase the torque load imposed on the main engine by the propeller. The resulting drop in propeller revolutions can result in reduced turbocharger efficiency, high exhaust gas temperatures with the risk of damage to exhaust valves and cylinder liners.
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Propeller Modification:
A suitable propeller modification can restore the correct operating environment for the engine with no appreciable loss in either propeller efficiency or cavitation performance. Modifying the trailing edge shape of a propeller blade section radically alters its hydrodynamic characteristics in the same way as deploying the flaps on an aeroplane wing. The optimum type of modification consists of a reshaping of the blade trailing edges, possibly with a small reduction in propeller diameter if appropriate. The success of the modification is highly dependant upon the trailing edge shape and should only be entrusted to properly trained propeller technicians.
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Afloat Modification:
SMS operates a worldwide network of accredited service facilities all backed up by the Company’s headquarters in Birkenhead U.K.
If the vessel can be sufficiently trimmed, all work can be carried out afloat with minimal delay. |
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Modification Drawing:
Our sister company, STONE MARINE PROPULSION LTD (formerly Stone Managanese Marine Ltd), has extensive knowledge and long experience in the design of suitable modifications for all classes of ships. The company offers a comprehensive service to owners and operators and is always available to discuss the most technically correct solution to your particular problems. SM Shipcare Ltd has many years experience applying these modifications in many challenging environments |
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