[C38] Holding Tank

[Tom T.]

Hi Larry,

My tank failed during a rough passage back in 2002 and I replaced it with
the identical Ronco tank which is still in production.

Instead of glassing in the new tank like the old one was, I made a frame of
aluminum angle that allows the tank to be removed easily if I ever need to
access the forward keel bolts, etc.  I wrapped the new tank in thin plastic
sheeting and after the tank was in place, I used a long piece of plastic
ice maker line attached to a can of Great Stuff to spray under the middle
of the tank to give support against the hull.  The plastic keeps the Great
Stuff foam from sticking to the tank.  The holding tanks are flat on the
bottom but our hulls are compound round so without the foam, they are not
supported except on the corners.

Another thing we did was replace the original rubber hoses with the new
white odor proof plastic hoses. They are hard to work with but last forever
and won't permeate odors like the original rubber type hoses.  I used a
heat gun to soften the ends which helps greatly to get the hoses over the
barbs of the toilet and holding tank.  My deck pump out fitting was Zymac
and corroded through so I replaced it with a quality stainless fitting when
I replaced the vent hose to the new holding tank.

Our boat has a macerator pump and we installed a "tee" between the
macerator pump and thru-hull.  The "tee" is connected to a piece of hose
with an end cap.  With this hose, we can remove the sanitary end cap and
operate the macerator pump to fill portable plastic cans to empty our
holding tank.  We can then dinghy the portable tank to a shore toilet from
any anchorage without having to move the 38 to a pump out station or
pollute the water by using the thru-hull.  It's an easy, inexpensive
addition if you already have the macerator pump.

Tom Troncalli
Renata #95  


> [Original Message]
> From: Larry Malmberg <larrypi at linkline.com>
> To: Catalina 38 Listserve <listserve at catalina38.org>
> Date: 7/29/2008 1:25:31 PM
> Subject: [C38] Holding Tank
>
> Hi all, we have a Ronco B110 holding tank on Hassle and it's apparently
gone
> bad, the nipple from the tank and where it screws in leading to the
> macerator is all deteriorated and we had a sewage leak into the bilge. 
Any
> one out there experienced in tank replacements?  Anything we need to be
> keenly aware of in changing out the tank?  I found them on line for around
> $150.00 bucks but is there a better tank out there?
>
> Also, it appears that the lining in the tank is coming apart.  This all
> started last weekend when the tank would not drain during a race, it was
> plugged up and we found the crack where the nipple goes in.  Some epoxy is
> holding it now but it will have to be done soon.
>
> BTW we took a second in the Newport Beach to San Diego CA race last
weekend!
> Doing Santa Barbara to King Harbor (Redondo Beach) CA this coming Friday
and
> Saturday, wish us luck.
>
>
>
>
> Best regards,
>
> Larry Malmberg
> Hassle
>
>
>
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