On Sat, 25 Mar 2006 19:30:58 -0500, Wayne.B
wrote:

On Sat, 25 Mar 2006 20:09:06 GMT, (Mic) wrote:

I was interested in the options for water storage on yachts. Some
have intergral to the hull storage, but in many of those discussions
there is no direct reference to lining materials.

High quality boats almost never have integral tanks - for water or
fuel.



Deerfoot 62 - a new all stainless steel keel with integral fuel tanks
and internal lead ballast.??? A Dashew boat??

I cant say whether that is true or not and for what reason, nor am I
really interested in debating that either. My thoughts on it are
based on James Baldwin's Triton refit and the Practical Sailor article
quoted below. I also did a little google research and listed those
refering to intergral.... West systems doesnt advise it.... but I
believe the european union concensus allow them... if you do have them
they certainly have to be baffled, and then comes the debate as to
where they ought to be located, etc. I also question if there is in
fact a concensus on the reasons why "intergral" is actually choosen.
Economic vs practial....

The purpose of this research was based on materials alone and not
really any other consideration per say as it seems that a decision
whether or not to have intergral is individual.


http://www.theyachtmarket.com/boats_for_sale/8187/
"Many individual tanks, integral to hull, some as fuel tank, some as
water tank, some as floatation tank. "
W. De Vries Lentsch - One off design 16.00 metres Hull Material:
Steel

http://www.morganscloud.com/aboutmc.htm
We carry 285 US gallons of fuel in integral tanks in the keel stub.
http://www.deckersailing.com/retrofit.htm
two integral water tanks that hold 110 gallons of fresh water.
Beneteau 375

http://www.yandina.com/Boat4Sale/Specifications.htm
The 5 integral fuel tanks are connected to two fuel transfer consoles,
one for engines

www.oceannavigator.com/article.php?a=993
Sunrider has integral tanks with 300 gallons capacity and can use fuel
bladders ... travel in tandem with a 55-foot sailboat that carried
jugs of Biodiesel.

http://www.practical-sailor.com/tools/features.html

http://www.practical-sailor.com/news...s/874tanks.pdf
"Part II: Integral Tanks by Keith Lawrence
The practice of building tanks integral with the hull
(using the hull shell to form part of the tank) comes
not-so-highly recommended by many authors.
Generally, these are the same experts that would
prefer that all marine tanks be made of monel. But I
would hasten to point out that many, if not most,
large fiberglass commercial fishing vessels are built
on hulls that are comprised almost entirely of
integral FRP tanks, and many of these boats have
been in service for over thirty years now. For
commercial vessels built of aluminum or steel,
integral metal tanks are the rule, rather than the
exception."

"The primary argument against integral tanks
seems to be that flexing of the hull will eventually
cause stress fractures in the corners of the tanks
leading to seepage. "

"The other popular argument against integral
tanks is that if the hull skin is punctured, then the
tank is also ruptured. This, I feel, is one of the strongest
arguments in favor of integral tanks, rather than
against them. It seems to me that sal****er sloshing
around in a fuel tank is a much easier problem to solve
than saltwalter rising over the berthtops."

"While the cost of materials for integral tanks is
relatively low, the labor cost is significant. This is
why they are often found in custom or one-off boats,
and rarely found in production boats. "
_____________________

NOTE: the word "intergral" is took to mean part of the boat rather
than a part in the boat....

http://www.nautilusmarineyachtbroker.../newsnov99.htm

Fuel: Diesel in 2 s/s tanks. Total capacity 450 litres Water: 2
integral tanks

http://www.2hulls.com/usedcatamaran-...iinaMaria.html
Fuel Capacity:, 120 gallons, aluminum tank ... 750 ltrs ( 180 galls)
fresh water in two integral water tanks (one ea. hull).

http://www.pacificseacraft.com/cgi-b....php?0100,news - 21k
On the subject of tanks, there are three fiberglass water tanks, built
integral to the hull, that hold 150 gallons of fresh water.

Deerfoot 62 - a new all stainless steel keel with integral fuel tanks
and internal lead ballast.

www.capedory.org/nqarticle/index.html

An integral 36-gallon fiberglass holding tank is glassed into the hull
molding above the ...

http://www.yachtshare.com/cgi-bin/di...small?bid=3225
2002 64' Blue Dragon by 2 Hulls, Inc. - Home Page
220 gallon integral water tank with deck fill;

www.imci.org/downloads/Dir9425ECen.pdf
may be kept in tanks that are integral with the hull.

[PDF] Technical Documentation
File Format: PDF/Adobe Acrobat - View as HTML
above 55°c may be kept in tanks that. are integral with the hull. ...
Sailboat and single-engine inboard. powered motor boats with remote-
...
http://www.rya.org.uk/NR/rdonlyres/4...umentation.pdf
-

"BoatShow" Passoa 47
Information on Passoa 47, a sailboat profiled at Ovation's online boat
show, ... and includes integral fuel and water tanks, ballast and all
non mechanical ...
www.boatshow.com/Passoa47.html

[DOC] TOPLANTI RAPORU
File Format: Microsoft Word 2000 - View as HTML
Diesel fuel may be kept in tanks that are integral with the hull. ...
Sailboat and single-engined inboard powered motor boats with
remote-controlled rudder ...
http://www.denizcilik.gov.tr/anlasma...iNGHAZ2005.doc
-
Richards 38 Manual
The fuel system consists of two integral fiberglass fuel tanks. ...
These two dissimilar but important optional items should be on every
sailboat. ...
www.cheoyleeassociation.com/Richards38manual.htm - 57k