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Old 01-10-2014, 14:58   #451
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by minaret View Post
Not that I've seen.
Well that's an honest answer.... considering you almost certainly haven't seen a Duflex panel in the flesh....

There are no voids in Duflex. Because the sheets are squeezed in a hydraulic press, any voids are completely filled with resin.
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Old 01-10-2014, 15:35   #452
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by minaret View Post
Not that I've seen.
you must not have seen the use of Duflex core which can be done in either end grain balsa and foam.

The Australian boat designers/builders of mono and catamarans are clearly ahead of some USA techniques using duflex balsa which overcomes this issue. Duflex is also ideal for kit construction.

"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.

Schionning Designs - Leaders in Multihull Design and Kit Development

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



Boat Construction | Lightweight Building Panels | Architectural Panels

Composite Panel | End Grain Balsa"

some useful infomation for those not farimilar with Duflex.
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Old 01-10-2014, 15:38   #453
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by 44'cruisingcat View Post
It wouldn't. A Duflex boat called "Just Add Water" got a tear in it's hull near the bow from hitting what was suspected to be a shipping container just afloat.

That boat was repaired weeks later without even removing it from the water. The owner told me water had migrated less than a centimetre from the puncture.
Was that not an American or Canadian vessel built with a kit in North America and repaired when it arrived in Australia.

Cheers
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Old 01-10-2014, 15:46   #454
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by downunder View Post
Was that not an American or Canadian vessel built with a kit in North America and repaired when it arrived in Australia.

Cheers
.
No, it was built here in Aus.
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Old 01-10-2014, 15:50   #455
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by category4jay View Post
I'm getting in on this late so sorry if this has been covered but.... ?how? in the world could that cat have basically disintegrated the way it did? I've seen lots of boats (cats and monos) washed up on shore after major hurricanes that are battered but essentially still intact but I haven't seen a complete and total structural failure like this one. Thanks.
You haven't been looking then. There were boats destroyed in some of the Queensland cyclones that could hardly be recognised as boats afterwards. They were basically piles of rubble, just some deck hardware identifying them as having been boats.
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Old 01-10-2014, 16:24   #456
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Re: Lagoon Cat smashed in Thailand

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No, it was built here in Aus.
Must have been another vessel. Had a hole in the side from being hit at an anchorage.

Was a story about it in one of the magazines most likely Aus Multihull world.
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Old 01-10-2014, 16:54   #457
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by minaret View Post
Fairly common. Balsa has highest strength/weight ratio of core materials. Commonly used below waterline in boats which are very concerned about weight.
Balsa core below the waterline is not, however, used by Lagoon (or at least not on our Lagoon) such that it is neither 'common' in the sense of a large proportion of vessels now in use -- Lagoon being the largest builder in number of vessels -- nor related to the OP.

Speaking of the OP, this is surely one of the largest examples of thread drift yet...fascinating discussion(s) for many, but seemingly now a long, long way from the focus on one unhappy Lagoon in Thailand. Just sayin...
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Old 01-10-2014, 17:27   #458
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Re: Lagoon Cat smashed in Thailand

Vast majority of threads get answered pretty quick, then they either die or "mature" into discussion of possibilities that may be loosely related to the initial subject, but usually something is brought up that is either interesting, controversial and starts it's own discussion.
Maybe I'm wrong but this thread very quickly lost any relevance to numbers of hulls and became about composite construction techniques etc. very quickly
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Old 01-10-2014, 17:31   #459
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by a64pilot View Post
Vast majority of threads get answered pretty quick, then they either die or "mature" into discussion of possibilities that may be loosely related to the initial subject, but usually something is brought up that is either interesting, controversial and starts it's own discussion.
Maybe I'm wrong but this thread very quickly lost any relevance to numbers of hulls and became about composite construction techniques etc. very quickly
Don't they all?
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Old 02-10-2014, 05:44   #460
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by D&D View Post
Balsa core below the waterline is not, however, used by Lagoon (or at least not on our Lagoon) such that it is neither 'common' in the sense of a large proportion of vessels now in use -- Lagoon being the largest builder in number of vessels -- nor related:
Lagoon had quite a few boats out there cored below waterline, also Privilige Cats, Leopards, Voyage,
Etc, I dont think I have seen any that had a major core issue. Unless we are talking deck hardware and that was mainly on the priviliges and older lagoons we have seen

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Old 02-10-2014, 06:03   #461
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Re: Lagoon Cat smashed in Thailand

All the Privileges and Voyage catamarans I have seen have been foam core in their hull construction.


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Old 02-10-2014, 06:22   #462
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Re: Lagoon Cat smashed in Thailand

Only the TPI built Lagoons are balsa cored below the water-line.... They are mostly solid down the back.
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Old 02-10-2014, 06:23   #463
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Re: Lagoon Cat smashed in Thailand

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Robert Redford can fix these problems offshore just hanging over the side. He even managed not to get any epoxy on his clothes.
Ahh mannn.... This is where I LOST it as the movie completely diverged from reality...
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Old 02-10-2014, 21:46   #464
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Re: Lagoon Cat smashed in Thailand

Cat fight?....little one went under big one
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Old 03-10-2014, 04:19   #465
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Re: Lagoon Cat smashed in Thailand

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Originally Posted by smj View Post
All the Privileges and Voyage catamarans I have seen have been foam core in their hull construction.


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I stand corrected, though, Though I have read about more than one privilige with delam issues, and it was in the foam. We had one fall out of survey,,even had a newer very well known brand of cat fall out of survey, most delamination problems I have seen over the years were on the deck or even bridgedeck,improper bedding of hardware I think foam coring does not make it any better or worse for coring, and no less chance of a delamination issue.

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