Quote:
Originally Posted by Larry M
Maybe I'm missing something here but if the thru-hulls were opened and they sandblasted them, what prevents the media from going up the thru-hull, up into the hose and out the sink? It is not that uncommon for sink drains to have thru-hulls located at or below the water line.
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I had the same thought - both galley and head sink drains are below the waterline on our sailboat.