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Old 30-09-2014, 10:49   #406
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Re: Lagoon Cat smashed in Thailand

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Good solid boat......

Its nice to know what people are referencing to..... a quick look a the name on the left tells the story.

I like Catalacs...... the 10m is pretty rare these days.

The older Catalacs are definetly stout boats. I'm still trying figure why a scratch on the hull of a cored boat would be disastrous.


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Old 30-09-2014, 10:55   #407
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Re: Lagoon Cat smashed in Thailand

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The older Catalacs are definetly stout boats. I'm still trying figure why a scratch on the hull of a cored boat would be disastrous.
I dont know.
Hopefully he will tell us in due course. There must a be a good reason for the comment.
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Old 30-09-2014, 12:02   #408
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Re: Lagoon Cat smashed in Thailand

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The older Catalacs are definetly stout boats. I'm still trying figure why a scratch on the hull of a cored boat would be disastrous.


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Gotta mean skin puncture
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Old 30-09-2014, 12:10   #409
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Re: Lagoon Cat smashed in Thailand

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I can agree with that but a single skin boat, if worth a damn, has longitudinal stringers.
Pardon me I read it wrong. Longevity no way
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Old 30-09-2014, 14:48   #410
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Re: Lagoon Cat smashed in Thailand

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I posted much earlier that the use of the cat should be determinant in what kind of hull you want, need! That said we shouldn't judge how others want to use their cat. I use mine in an cruising area where a scratch to a cored hull would be disastrous as within 1000 nm no repair yard for yachts even a chandler around. I gunkhole and do ciastal sailing, and sail a lot. I have hit reefs, ricks other hidden obstructions with luckily not much damage, nothing I couldnt fix as my hull is full grp.


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There's nothing difficult about fixing scratches in cored hulls either.
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Old 30-09-2014, 20:37   #411
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Re: Lagoon Cat smashed in Thailand

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Gotta mean skin puncture




Clearly he does. A skin puncture in a balsa cored boat 1000 miles from the nearest lift would likely be catastrophic.
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Old 30-09-2014, 23:19   #412
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Re: Lagoon Cat smashed in Thailand

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Clearly he does. A skin puncture in a balsa cored boat 1000 miles from the nearest lift would likely be catastrophic.
Very wrong. A skin puncture would certainly not be considered catastrophic with a duflex balsa cored vessel.

It is highly likely the majority of catamarans built in Australia today use balsa core and are built using duflex balsa panels and the problems with the use of balsa in the USA is simply not a problem with Duflex constructed vessels in Australia or NZ to my knowledge

Most of the Schonning's built use balsa.

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Naturally proper boat building techniques such a decoring any through holes still need to be followed with Duflex balsa.



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Old 01-10-2014, 04:07   #413
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Re: Lagoon Cat smashed in Thailand

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Clearly he does. A skin puncture in a balsa cored boat 1000 miles from the nearest lift would likely be catastrophic.
Not as long as there is a beach somewhere nearby.
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Old 01-10-2014, 04:41   #414
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Re: Lagoon Cat smashed in Thailand

Why pray tell would a small puncture be catastrophic. Within 6 or 7 days, ?

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Old 01-10-2014, 04:53   #415
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Re: Lagoon Cat smashed in Thailand

I think as always around her we are getting a little too literal.
Surely if you punch a hole in a balsa cored panel and let water in, your in for a lot of work, regardless of it's the hull or the deck or how many hulls the boat has. I guess we have to define catastrophic, me it means losing the boat, to someone else it may mean more money to fix than they have, which come to think about it, is pretty catastrophic.
See we took a scratch and made it a puncture, now we are trying to make it a small puncture.
Regardless, don't you guys think that no matter how smart we are, maybe when it comes to a particular subject, someone that makes their profession out of that subject, may have a point? Even if it may be an un-popular one?
Sorry, I'm grumpy, haven't finished my coffee yet.
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Old 01-10-2014, 06:29   #416
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Re: Lagoon Cat smashed in Thailand

I would say if you punched a hole in a solid glass panel you would be in for a lot of work. But the point being argued is would a scratch on a balsa cored hull be catastrophic?


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Old 01-10-2014, 06:54   #417
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by a64pilot View Post
I think as always around her we are getting a little too literal.
Surely if you punch a hole in a balsa cored panel and let water in, your in for a lot of work, regardless of it's the hull or the deck or how many hulls the boat has. I guess we have to define catastrophic, me it means losing the boat, to someone else it may mean more money to fix than they have, which come to think about it, is pretty catastrophic.
See we took a scratch and made it a puncture, now we are trying to make it a small puncture.
Regardless, don't you guys think that no matter how smart we are, maybe when it comes to a particular subject, someone that makes their profession out of that subject, may have a point? Even if it may be an un-popular one?
Sorry, I'm grumpy, haven't finished my coffee yet.
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I would say if you punched a hole in a solid glass panel you would be in for a lot of work. But the point being argued is would a scratch on a balsa cored hull be catastrophic?


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Old 01-10-2014, 07:11   #418
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Re: Lagoon Cat smashed in Thailand

Cored structures are much lighter for the same strength. They also have other advantages such as good heat and sound insulation.

There are a few extra problems such as delamination and core rot. These are rare, but can be serious and obviously cannot occur in a solid structure.

One problem for a cruising boat is that while the structure is strong and stiff the outer skin is not very thick. A "scratch" is no problem, but it does not take a lot to puncture the outer skin. In fact the outer skin is usually thinner then the inner skin because with an impact it is in compression.

If the thin outer skin is breached the structure is still watertight, but the core is exposed. Problems can occur if this gets wet, or if prompt repair is not done.

There are a lot of advantages for a cruising boat to have as little cored structure as possible especially the hull and under the waterline. Virtually all decks are cored.
A solid hull is quite practical in a monohull, but the added weight is a problem for a cat.
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Old 01-10-2014, 07:16   #419
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Re: Lagoon Cat smashed in Thailand

I agree that balsa can wick moisture, but a well built resin infused vacuum bagged balsa hull should have minimal problems with water spreading through the core if done correctly. When people hear balsa core, I think they think of the older boats and the problems with their balsa cored decks.


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Old 01-10-2014, 07:24   #420
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Re: Lagoon Cat smashed in Thailand

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In fact the outer skin is usually thinner then the inner skin because with an impact it is in compression.
In most core builds, the outer skin is thicker than the inner skin.

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