Holding tank vent through hull fitting

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Channel Islander's picture
Channel Islander
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Joined: 10/8/11
Posts: 378
Holding tank vent through hull fitting

Hi friends,

As you know Peggie Hall and the conventional wisdom hold that the holding tank should be vented with a (preferably two) one-inch hose connected to a standard open through-hull fitting installed just below the rub rail and covered with a clamshell.

Has anyone done this on a C36?

It makes sense to me that it's the right thing to do, but I'm nervous about the vent coming under water on a hard heel.

Thanks

Nick

Nick Tonkin
*Former* Website Administrator, C36/375IA
*Former* owner, C36 tr/fk #255, Santa Barbara, CA

Nimue's picture
Nimue
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Joined: 6/23/09
Posts: 429

I have done this but with a slightly smaller dia hose, I think it's 3/4", and I have no clamshell over the thru-hull fitting. I have had no problems even during some extremely rough crossings of Georgie Strait.

Jason V
Vancouver, BC, Canada

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GaryB
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Joined: 10/26/08
Posts: 584

Catalina Direct has a stancion which has a vent built into it's base. This is the type of vent I had on my 30' as well as GWTW. Would prevent your concern of a vent on the side of the hull. Con is that overflow may run down your deck.

Gary Bain
S/V "Gone With The Wind"
Catalina 36', Hull #: 1056, Year: 1990, Engine: M-35
Standard Rig
Moored: Boothbay Harbor, Maine
Home: Auburn, Maine

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