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Compass Marine How To | all galleries >> Welcome To MarineHowTo.com >> External Strainers - OMG > Cause = Barnacle Colony
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Cause = Barnacle Colony
15-MAR-2010

Cause = Barnacle Colony



Here we don't have an external strainer and it shows what a barnacle blockage looks like behind and intake strainer. If you don't protect the thru-hull with bottom paint the barnacles with grow. With external strainers this requires removal, if they can be, and a proper application of bottom paint.


So what's the problem with this vessel? This was a 1/2" intake with an ID of less than 3/8". Owner stated he did not have a paint brush small enough to "get up in there"... What the boat builder was thinking using a less than 3/8" ID intake is beyond me....


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