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Old 07-08-2016, 12:50   #1
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2003 Jeanneau 43 hull

Just replaced a bad ball valve and found the hull to be one inch thick. This up at least halfway from the bottom that is reported to be two inches minimum thickness. Not what I would call lightly built. The thru hull was in great condition but the ball was frozen.
Posted because I keep hearing these boats are lightly built but the more I dig into her the more I like my Jeanneau.


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Old 07-08-2016, 13:00   #2
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Re: 2003 Jeanneau 43 hull

Following.
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Old 07-08-2016, 20:51   #3
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Re: 2003 Jeanneau 43 hull

This is gonna be interesting.
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Old 09-08-2016, 05:43   #4
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Re: 2003 Jeanneau 43 hull

Quote:
Originally Posted by Lennie View Post
Just replaced a bad ball valve and found the hull to be one inch thick. This up at least halfway from the bottom that is reported to be two inches minimum thickness. Not what I would call lightly built. The thru hull was in great condition but the ball was frozen.
Posted because I keep hearing these boats are lightly built but the more I dig into her the more I like my Jeanneau.


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A Jeanneau is on my favourite list right now and I would buy one in a heartbeat....but aren't the hulls built up in thickness where the thru hulls are planned and installed? I thought a backer was put inside the hull layer then glassed in to provide support for the fitting.
No judgement, just a question....

Dan
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Old 09-08-2016, 05:45   #5
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Re: 2003 Jeanneau 43 hull

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Originally Posted by danstanford View Post
A Jeanneau is on my favourite list right now and I would buy one in a heartbeat....but aren't the hulls built up in thickness where the thru hulls are planned and installed? I thought a backer was put inside the hull layer then glassed in to provide support for the fitting.
No judgement, just a question....

Dan
Agree, my 2 cents a backing plate glassed inside.....
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Old 09-08-2016, 08:19   #6
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Re: 2003 Jeanneau 43 hull

Doesn't the fact they used ball valves instead of seacocks concern you?
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Old 09-08-2016, 10:17   #7
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Re: 2003 Jeanneau 43 hull

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Doesn't the fact they used ball valves instead of seacocks concern you?
I would be more concerned about bronze vs brass vs plastic material used.
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Old 09-08-2016, 10:43   #8
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Re: 2003 Jeanneau 43 hull

There is no balsa no foam there?

Why two inches of grp then? Boat with no frames?

Very odd.

Last time I noticed lamination that thick was a 70ft Oyster of the old style.

Pretty odd to see the same thickness on a modern 43'er.

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Old 09-08-2016, 10:46   #9
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Re: 2003 Jeanneau 43 hull

Then again, at only 30% ballast all the extra weight must come from something. Maybe it is indeed 2 inch grp.

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Old 09-08-2016, 10:49   #10
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Re: 2003 Jeanneau 43 hull

"...Built of hand-laid fiberglass without a core, the 43 hull, like other Jeanneau sailboats, is stiffened with laminated-wood longitudinal stringers and ring frames and without structural liners. For years, this was a point of difference between Jeanneau and its archrivals at Beneteau, whose boats are engineered with liners...."

Doh!

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Old 13-08-2016, 21:35   #11
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Re: 2003 Jeanneau 43 hull

Just checked the thru hull location and there is no backer in that location. The y-valve has a backer but it's up higher on the hull. And 2 inches on the bottom would not be out of line as this is where the keel is bolted on and the extra stiffness would be needed.

As far as the ballast ratio is concerned the STIX value is more pertinent to newer designs. The Jeanneau 43 is rated 44 STIX value. A (Unlimited Ocean) STIX Value >32 - adequate to withstand up to a force 10 gale, with average waves of 7 m height and eventual wave heights of 14 m.

And yes I would prefer a proper seacock over the ball valve. But I will change them out over time. That said none are in locations where the could be damaged easily by stowed gear moving around. Just another maintenance issue to keep tabs on.

And before anyone brings up the iron keel, yes it needs more maintenance but properly cared for it will last a lifetime.

I'm not saying this is the best boat out there but you get a lot bang for your buck.

Sorry for the delayed response but we have been out sailing and not varnishing teak.


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Old 14-08-2016, 07:57   #12
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Re: 2003 Jeanneau 43 hull

Quote:
Originally Posted by Lennie View Post

(...)

As far as the ballast ratio is concerned the STIX value is more pertinent to newer designs.

(...)
Does the STIX formula consider ballast at all?

http://www.boatdesign.net/forums/att...ratios-rm0.jpg

http://www.estudiasonavegas.com/imag...ice-Stix-8.png

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Old 14-08-2016, 09:17   #13
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Re: 2003 Jeanneau 43 hull

I've sailed and worked on a friend's '06 Jeanneau 36i quite a lot and it strikes me as a very solid hull and really a very well built boat.
We were even hit once by a freakin' powerboat at the aft bulkhead and it bounced off without damage.
I've got a friend who enjoys "lapping and greasing" his seacocks regularly while I go sailing risking my life on Marelon ball valves, embrace the new, reject the cult of "They really knew how to build back then". We didn't, believe me, I was there.
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Old 21-12-2016, 10:37   #14
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Re: 2003 Jeanneau 43 hull

I know it's been awhile but I found this article on boat statistics that I found to be very illuminating.

Barnakiel, one component of the STIX calculation is the AVS(angle of vanishing stability). Ballast and it's location(center of gravity) are used in calculating the AVS. So location of the ballast is as important as how much. At least that's my understanding of it.

Understand your boat and her statistics
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Old 22-12-2016, 01:46   #15
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Re: 2003 Jeanneau 43 hull

Lennie - we have Jeanneau DS40 built 2000 launched and had to replace on a few years ago and may have to change another one soon. find out when it warms up a bit -
but saying that we did reinforce the outlet a bit -

Do you have the Kevlar weaved strand in your boat? We do
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