Pitted and eroded rudders were much need of repair through a Unique solution.

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The surface was abrasive blast cleaned to Sa2 1/2, 75 microns surface profile (or near as possible) 

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In many areas the pitting measured up to 10 mm deep. All pitted areas were rebuilt using UPS 105 EG Metal Repair Paste and once cured to a machinable state, where smooth to a suitable finish.

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Next the rudders were resurfaced using UPS 210 Efficiency Ceramic, at 2 coats. 

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The repair was carried out in 2011, and the ships docked in 2013, with absolutely no remedial work required. 

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This method of repair eradicated the need for expensive and time consuming welding or bonding of steel plates