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06-07-2009, 19:07
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#1
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Registered User
Join Date: Apr 2008
Location: Silver Creek, WA, US
Boat: searching
Posts: 215
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Jeanneau Lagoon Hull Core Material
Can someone verify the core material for Lagoon cats. I understood it to be foam, but am now told balsa, if this is correct, was there a switch over at some point or did I have a complete misunderstanding. Paticular to the hull s.
__________________
"When the world was flat as a pancake, Mona Lisa was happy as a clam" J. Prine
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06-07-2009, 19:23
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#2
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Registered User
Join Date: Oct 2006
Location: Sidney, B.C, Canada
Posts: 99
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I am almost certain that they are balsa core hulls, decks and superstructure.
Even the ones made by Tilletson and Pearson in the US for a few years where constructed that way.
Cheers
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06-07-2009, 19:31
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#3
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Registered User
Join Date: Dec 2007
Location: Great South Bay, Long Island, NY, USA
Boat: TPI Lagoon 35ccc Catamaran designed by Morrelli & Melvin
Posts: 219
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Lagoon Hull Core
I always understood them to be balsa. The Jeanneau-Lagoon 35ccc was built by TPI in Rhode Island using the SCRIMP infusion process, and it used balsa core.
__________________
"People sail for fun and no one has yet convinced me that it's more fun to go slow than it is to go fast." -Dick Newick
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07-07-2009, 09:34
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#4
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Registered User
Join Date: Dec 2007
Posts: 128
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According to the spec sheet for the new Lagoon 400 from the Lagoon website:
CONSTRUCTION
•Polyester and vinylester resin construction (osmotic barrier)
• Infused Balsa cored hull construction - white gelcoat
• Below the waterline: infused Hull bottom in solid GRP
• Infused Balsa cored deck and bridgedeck construction
• Solid glass or core-mat sandwich one-piece countermold
• Laminated wooden bulkheads either tabbed or glued
The Lagoon 440 is similar:
CONSTRUCTION
• Polyester and vinylester resins (anti osmotic
barrier)
• Balsa core hull, solid laminate under water
line
• Balsa core bridge deck and deck white
gelcoat
• Solid laminate inner liners
• Laminated marine plywood bulkheads
Presumably the other current models use the same methods.
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02-08-2009, 21:35
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#5
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Registered User
Join Date: Aug 2008
Location: Pacific Northwest, USA
Boat: 31' Corsair/Farrier(RIP) trimaran. Lauwersmeer Cruiser in Europe canals. 19' Lightning
Posts: 416
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Can anyone confirm that the Lagoon 410 is the same; solid glass below the waterline, balsa cored above?
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03-08-2009, 00:12
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#6
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CF Adviser
Join Date: Apr 2006
Location: Pac NW
Boat: Boatless, for now, Cat enthusiast
Posts: 1,318
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Yes, the 410 is the same -- solid below, balsa above.
ID
__________________
Intentional Drifter
Observations are gold; hypotheses, silver; and conclusions, bronze.
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote.--Ben Franklin
Everyone is entitled to their own opinion, but not their own facts.--Daniel Patrick Moynihan
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03-08-2009, 04:29
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#7
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Registered User
Join Date: Jan 2008
Location: Jupiter, FL
Posts: 169
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The core material on the Lagoon models that I've surveyed (I've surveyed most of them) is Balsa, and it doesn't stop at the waterline exactly. It (the core) usually carries down a foot or so below the waterline, so you have a foot or so of solid fiberglass before the bottom and the keel attachment.
Brian
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11-08-2009, 14:17
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#8
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Registered User
Join Date: Jul 2009
Boat: Lagoon 380
Posts: 18
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amarinesurveyor: since we are right now looking after a used Lagoon 410 and you surveyed them – is it a right cat to choose for live aboard?
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11-08-2009, 15:15
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#9
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Registered User
Join Date: Jan 2008
Location: Jupiter, FL
Posts: 169
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Only you can make the decision of wheter it is right for you. They are pretty comfortable boats and offer nice space for a couple and occasional guests. My job is to tell you the condition of the boat after I inspect it. I can't tell you whether to buy the boat or not, or if it is right for you.
Brian
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11-08-2009, 16:19
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#10
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Registered User
Join Date: Sep 2007
Location: St. Augustine, Florida
Boat: C&C 40
Posts: 193
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20-08-2009, 07:32
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#11
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Registered User
Join Date: Mar 2003
Location: Fredericton, NB, Canada in the summer and fall; Caribbean in winter and spring aboard Cat Tales.
Boat: FP Tobago 35 (and a H-21 SE)
Posts: 620
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Wow. Verification that large cats are made in the "half-hull". My Tobago was obviously made that way. I found epoxy (or something other than a glass laminate) under the gelcoat along the joint at bow and keel, suggesting the structural glass for the joint was all on the inside. when the epoxy cracked, so did I. I ground it out and replaced it with 4 layers of glass and new gelcoat. It may not have been necessary, but I couldn't stand the thought of the crack through the epoxy on the outside
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20-08-2009, 07:49
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#12
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Registered User
Join Date: Sep 2007
Location: St. Augustine, Florida
Boat: C&C 40
Posts: 193
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Quote:
Originally Posted by Sonosailor
Wow. Verification that large cats are made in the "half-hull". My Tobago was obviously made that way. I found epoxy (or something other than a glass laminate) under the gelcoat along the joint at bow and keel, suggesting the structural glass for the joint was all on the inside. when the epoxy cracked, so did I. I ground it out and replaced it with 4 layers of glass and new gelcoat. It may not have been necessary, but I couldn't stand the thought of the crack through the epoxy on the outside
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I hope you used epoxy resin in the repair.
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07-09-2009, 15:38
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#13
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Registered User
Join Date: Mar 2003
Location: Fredericton, NB, Canada in the summer and fall; Caribbean in winter and spring aboard Cat Tales.
Boat: FP Tobago 35 (and a H-21 SE)
Posts: 620
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Actually, I didn't use epoxy resin in the repair. After grinding out the epoxy, I used good quality isophthalic resin, matting and roving, and isophthalic gelcoat, same as Fountaine Pajot used on the rest of the hull. I laid the layers up on plastic sheet with a minimum of resin(about 20" at a time), applied acetone to the sanded-down area, and with the help of my wife, stretched and duct-taped the new material up a bit at a time. I'm happy with it now.
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08-09-2009, 02:30
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#14
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Registered User
Join Date: May 2009
Location: Isle of Anglesey
Boat: A few!
Posts: 50
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If you do mean Jeanneau then remember these are the boats with slanted windows: 35,37,42,47,55,57,67 and 82 all produced before Beneteau took over in 1995. To my best knowledge these were balsa underwater and sectioned divinicell above. Some of the 55s had some pretty wild material combinations making them very stiff and light... well stiff until the plywood bulkheads started exploding with alarming frequency.
Bene took over in 95 and started the vertical windowed boats at the land-locked factory in Vendée (having to be trucked to and launched at the privilege factory) The 570 stayed in Bordeaux at CNB with the 57, 67 along with some rumored plans for some real whoppers.
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08-09-2009, 06:33
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#15
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Registered User
Join Date: Sep 2007
Location: St. Augustine, Florida
Boat: C&C 40
Posts: 193
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This is directly off their web site for the 1995 47 lagoon construction,which I believe was still used in the later vertical window lagoon. They did use different resins and glass in early models. A number were built with epoxy, vinyl ester, and kevlar and carbon fiber.
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