Princess 30DS | Electrolysis & Galvanic Action | #00854

Princess 30DS – Electrolysis / Galvanic Action                                                              

We undertook a Pre Purchase Inspection (PPI) on this Princess motor boat and found a most unusual phenomena in so far as the antifoul paint had been stripped clean in the areas immediately surrounding all underwater bronze skin fittings

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The bottom had been antifouled blue on top of a copper undercoat, which undercoating had not been left clear of all underwater appendages such a skin fittings, rudder stocks,                 P brackets etc.

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It is our opinion that an electrolytic current has been set up within the copper based undercoat and the bronze skin fittings, the consequence of which a ‘reaction’ has stripped off the blue antifoul paint within the immediate vicinity of bronze skin fittings.

When the copper undercoat was applied it is necessary to leave a clean (unpainted) radius of approximately 2″-3″ around ALL bronze skin fittings

The owner of this Princess is very fortunate not to have had his props, rudder, P brackets etc attacked and destroyed by electrolysis / galvanic action

For more information on electrolysis & galvanic activity visit (search) our earlier blogs entitled……

* Anodes for Boats – A Clear and Simple Resume          PLUS:

* Searay 290        This blog / post details how a boat sank consequent of electrolysis

For more information contact European Marine Services Ltd.  Marine Surveyors & Consultants 
EMS also undertake Boat Safety Inspections & Engine Inspections
Tel: 01603 327 123  

For more information contact European Marine Services Ltd    (inc European Marine Surveys)
Tel :  01603 327 123

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