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Old 01-10-2010, 08:33 AM   #4
Jim Spence
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City: Full time cruiser
Vessel Name: Sea Eagle
Vessel Model: Californian 50' Cockpit M/V
Join Date: Oct 2007
Posts: 180
RE: Installing Thru hulls

Phil I don't agree with you about installing shut offs to thru hulls above the water line. But I would like to understand your reasoning. To add a shut off valve to every thru hull would add another 3-6 inches sticking out from the inside of the hull, creating an obstruction if you can even get them in some places.
In my case I have 6 fuel tanks with vent lines, 2 waste tanks with vents, 2 water tanks with vents, 4 bilge pumps, 3 A/C thru hulls, 2 generator exhaust thru hulls, 2 main engine water bypass thru hulls and a cockpit drain, that are all at or above the water line. Most of these are 3 or 4 foot above the water line, what would a shutoff do for me?
Steve is installing a waste tank vent that should be very high on the hull and a bilge pump thru hull that I can't imagine shutting off.
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