Chuck (and Joe),
Several reasons. Added capacity, no vent (and thus no air) and easy to check
level. Let me elaborate.
Touche's original factory tank was a 21 gallon baffled fiberglass "tub" with a
flange and riveted top made to fit under the dinette seating. The top was
sealed with butyl rubber. Touche' had been idle for many years when I bought
it. I removed the top on the tank by drilling out all the rivets. The inside
was covered with mold. I scrubbed it clean and re-assembled it. The top
always leaked after that. When I filled it, it would leak at the top flange.
Also when the boat heeled, I lost a percentage of the contents so the tank
never was 21 gallons, more like 18-19 gallons.
Even though the rigid tank appeared to be designed to fit the compartment,
there was a lot of room around it. The bladder tank expands to almost
completely fill the compartment. Going from "21" to 26 gallons was 25% minimum
increase in capacity.
The bladder tank is essentially a sealed system. With no vent, air can't get
in, chlorine disinfectant can't evaporate out. The opportunity for algal or
fungal growth is minimized.
To determine how much water we have, we simply lift the compartment access and
look at the tank or push on it.
I think bladder tanks are perfectly acceptable for liquid storage on boats.
Touche' also has a flexible tank for wastewater (I resisted the term bladder
waste storage tank thinking it would either be redundant or confusing :) ). It
hangs between the head liner and the hull right behind the head itself.
Bladder tanks are used in the aviation industry for fuel. I have 2 friends
here that have bladder tanks for diesel storage. One of them is custom made.
I know because I went inside the compartment to measure for it. It's a large
tank.
The BIG caution when installing a bladder tank is to thoroughly examine the
selected compartment for abrasion and puncture points. I found a few rough
spots on the inside of the hull that I ground flat.
Dennis C.
Touche' 35-1 #83
Mandeville, LA
>________________________________
> From: Chuck S <[email protected]>
>To: [email protected]
>Sent: Thursday, August 16, 2012 7:02 AM
>Subject: Re: Stus-List Where the heck is a 100 gallon water tank in this
>boat???
>
>
>Dennis,
>Why do you like the bladders better than the rigid plastic tanks?
>
>
>Chuck
>Resolute
>1990 C&C 34R
>Atlantic City, NJ
>
>
>
>From:[email protected] [mailto:[email protected]] On
>Behalf Of Dennis C.
>Sent: Wednesday, August 15, 2012 6:29 PM
>To: [email protected]
>Subject: Re: Stus-List Where the heck is a 100 gallon water tank in this
>boat???
>
>Well, let's see. 26 gallon bladder under the aft dinette seat, 40 gallon
>bladder in the aft V-berth storage, 31 gallon triangular in the forward
>V-berth storage, a 13 gallon in each of the v-berth side storages, a 39 gallon
>behind the hanging locker between the liner and hull (probably would only be
>50% filled), a decent sized one in the port quarter behind the quarter berth,
>a 13 gallon in the middle settee storage,.....how much is that? :)
>
>Touche' has the first one, a 26 under the dinette. Big improvement over the
>factory hard tank.
>
>Dennis C.
>Touche' 35-1 #83
>Mandeville, LA
>
>
>
>
>________________________________
>
>From:"Della Barba, Joe" <[email protected]>
>To: "[email protected]" <[email protected]>
>Sent: Wednesday, August 15, 2012 4:01 PM
>Subject: Stus-List Where the heck is a 100 gallon water tank in this boat???
>
>http://www.yachtworld.com/core/listing/boatMergedDetails.jsp?boat_id=2300406&ybw=&units=Feet¤cy=USD&access=Public&listing_id=77715&url=
>
>
>
>Joe Della Barba
>
>_______________________________________________
>This List is provided by the C&C Photo Album
>http://www.cncphotoalbum.com/
>[email protected]
>
>
>_______________________________________________
>This List is provided by the C&C Photo Album
>http://www.cncphotoalbum.com
>[email protected]
>
>_______________________________________________
>This List is provided by the C&C Photo Album
>http://www.cncphotoalbum.com
>[email protected]
>
>
>
_______________________________________________
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