Flexable versus Ridged holding tanks - SailNet Community
 
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post #1 of 6 Old 02-28-2007 Thread Starter
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Flexable versus Ridged holding tanks

When I bought Privateer she originally had a flexible holding tank
(Jabsco Par 15) which still had crap (pun intended) in it after the previous owner had her up on the hard for almost 2 years. Needless to say I deep 6'd it. The new marina requires holding tank for liveaboards, and I was thinking about replacing the old with a new flexible, but I have no experience with them. Input would be appreciated.

S/V Privateer
42' Morgan Custom
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post #2 of 6 Old 02-28-2007
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I would avoid ridged holding tanks, as they are much more difficult to clean out than smooth tanks are. If you're asking about flexible vs. rigid tanks, I would probably say that rigid tanks are the better choice for most boats.

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post #3 of 6 Old 03-05-2007
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Take a look at:

http://www.severnriveryachtclub.org/...sanitation.htm

You want a holding tank that lets the poop degrade _aerobically_. So there has to be air on top of the waste.

Use a rigid tank. Usually, _somebody_ makes something that fits in the available space.

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post #4 of 6 Old 03-05-2007
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Sorry - that document is at:

http://www.severnriveryachtclub.org/...sanitation.htm

Marine Sanitation: Fact vs. Folklore
by Peggie Hall (used to be the head of Peal Products, bought by Raritan in 1999)
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post #5 of 6 Old 03-05-2007
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Great link CP!
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post #6 of 6 Old 03-05-2007
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I would point out that Peggy Hall is probably one of the foremost experts on marine sanitation systems there is currently.

I would also point you to this link, which I believe is also by Peggy, and does mention the negative aspects to using a flexible bladder as a holding tank, especially on a sailboat.

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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
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—Cpt. Mal Reynolds, Serenity (edited)

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Last edited by sailingdog; 03-05-2007 at 12:13 PM.
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