Sunday, April 30, 2017
Ecoshield

The decision to apply Subsea Industries’ award-winning Ecoshield hard coating to rudders and thrusters is paying dividends, with a number of shipowners noticing zero cavitation damage and failure compared to equipment coated with other protective systems.

Ecoshield safeguards propulsion systems and steering gear against cavitation and corrosion damage throughout the vessel’s service life. According to Miltos Synefias, Technical Director, Pleiades Shipping Agents, who first applied the coating in 2013 to the rudder of the crude oil tanker Evrotas, “The results made the choice to extend the coating to other vessels obvious”.

Since then, Subsea Industries has completed Ecoshield applications to the rudders and thruster nozzles of a further nine Pleiades vessels. Some of these vessels have already drydocked, but their rudders and nozzles experienced zero cavitation damage and did not need to be recoated. Similarly, five years after Ecoshield was applied to the rudders of three containerships operated by a major liner company, the coating was still intact needing only touch-ups. The performance resulted in the shipowner going on to apply the coating to rudders of 40 more vessels.

When Maersk Deva drydocked at the Santirul Naval Constanta shipyard, in Constanta, Romania, Georgios Zolatos, Fleet Technical Coordinator, Danaos Shipping, said: “Highly qualified professionals with FROSIO red level certificates evaluated the coating and gave the green light for application. After five years of operation at various speeds, there were minor detachments and those were easily repaired.”

“Hydrodynamic cavitation causes damage to rudders and thrusters often resulting in serious erosion, pitting and sometimes complete failure of equipment. However, just one Ecoshield application to equipment affected by the phenomenon prevents cavitation and corrosion damage throughout the vessel’s operational life,” said Subsea Industries’ Production Executive and NACE Coating Inspector Manuel Hof.

“The confidence we have in our hard coating technologies is backed up with a ten-year performance guarantee.”

More on this and other news in Sea Breezes Magazine - February 2017 Issue
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