Hi Peggy,

I have shopped around here in Ottawa Canada and the prices for a custom tank
don't seem all that reasonable to me. I am thinking custom because of price
but also so I don't have to modify the sole height to accomadate a standard
size tank. A tank height of 15" doesn't seem too standard. Headroom is
around 6' which isn't a problem for me but if I cut the ceiling height down
any, some might find it a little claustrophobic.

I'm curious why the location is not good for waste tank. Hope the answer
isn't too obvious.

You may recall that I am redoing a houseboat. 40 footer. I ended up
replacing stringers so the boat is pretty bare right now. The head is not in
yet so I am flexible where it goes but right now my plans put it off centre
towards aft. The 45 gallons comes from discussions at the marina. If you
don't want to be docking/pumping more than once a week, that is the size to
use.
Also, even though I may not end up living on the hook as much as I think, I
am trying to redo the boat to make it appealing to a buyer should I end up
selling it. Is 45 gal still too big with this as a consideration? From you
experience, what size of tank are you thinking?

I am considering of starting off with a manual toilet such as "ITT Par
Manual Marine Toilet":
http://www.valleymarine.ca/Main.asp?...PageNumber= 1




"Peggie Hall" wrote in message
. net...
Steve Lortie wrote:
I am considering making my own black water tank. Blackwater being
toilet waste.

Strongly consider Wayne's suggestion. Ronco Plastics (no relation to the
VegoMatic Ronco btw) makes TOP quality poly tanks for a very reasonable
price.

I would like to place the tank under the sole between the centre
stringers.

That's a good location for a water tank, but not for waste holding tank.

What size is your boat? Sail or power? Where's the head--forward or aft?
Also, unless you're restoring a houseboat, 45 gals is a LOT of waste
to store aboard...a lot of weight--close to 400 lbs including the weight
of the tank. Why do you think you need a waste tank that big?

I should be able to place a
toilet right over the tank to eliminate pumping it from toilet to
tank. Good idea?

Maybe...maybe not. What kind of toilet do you have in mind?

--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"

http://shop.sailboatowners.com/books...ku=90&cat=1304