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  #1  
Old 01-29-2003, 02:51 PM
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Designing a wood epoxy classical boat.

Hi everybody

I'm new on this! I pretend to design and build a boat with classical lines and reasonable performances to be built in wood epoxy construction. I would like a medium displacement boat, 40 feet, round bilge, fin keel and with the rudder under the hull, away from the keel. At the same time I would like it strong and safe enough to be suitable at open sea as a cruising boat.
It's very unusual to find designs with a modern underwater body and a classical upper body design. What I mean with "a classical upper body design" is that kind racers of America's cup of the beginning of 20th century. Of course it would be adapted for a fullness and heavier body, but keeping that concept (and with that stern). I realize that I will not have too much inside space and a good waterline length, but I don't mind very much with interior space and waterline length. I pretend a pretty good-looking boat that cruises in comfort for two couples and I don’t mind if a 40 feet boat has 32 feet waterline and becomes a little slower.

The problem is that I don't know if this kind of boat will sail in safe conditions in rough open seas, comparing it with heavier classical designs for the same length.

Could anyone give me an opinion about this? Is this viable? Is it possible to join together all this characteristics?

Thank you
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  #2  
Old 01-29-2003, 06:14 PM
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gonzo gonzo is offline
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Modern racers have shallow body lines and a lot of beam in proportion to length. Older designs, like the ones you refer to, have narrow beams with long overhangs. They are at the extreme opposites of design. It is possible to build an old design with modern methods. The rigging is one of the areas to modify. New materials for sail cloth makes them more stable and efficient. At the beggining of the 20th centurythe construction methods limited the loads acceptable for the hull and deck. You can increase the percentage of displacement the ballast would be. This can give more stability, bu the boat will be less seakindly. I think your best solution is to build a boat very similar to the traditional ones, but modify the design slightly to account for better construction techniques. Heavy designs only put more stress in a structure. It is a fallacy that an overbuilt boat is safer. I am a shipwright and marine surveyor. If you are in the Great Lakes area I could work with you in this projects. Also America's Cup racers of the early 20th century were about 100 feet in length. Maybe something along the lines of a 6 or 8 meter boat would suit you better. They are not extreme and do well in rough weather, while being of the style you are looking for. Let me know if you need trade references.
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  #3  
Old 01-31-2003, 08:23 AM
poul poul is offline
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check out Danish Marine Design

Is is something like this, you're looking for ????
http://www.cde-dmd.com/eng/designs/k...ke/clas45.html
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Old 02-04-2003, 01:06 PM
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Thank you Poul!
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  #5  
Old 02-18-2003, 12:58 PM
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maybe this will help you
http://www.martin-yachts.com/yacht-b...phases/cad.htm


and: http://www.martin-yachts.com/yacht-b...ositioning.htm
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  #6  
Old 02-18-2003, 01:30 PM
Uli Uli is offline
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This is the 36'' daysailer
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  #7  
Old 02-18-2003, 07:18 PM
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Stephen Ditmore Stephen Ditmore is offline
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The W-46 is another example:
www.w-class.com

There was also a nice boat just under 40' built in northern England a few years back, the first for a Scandinavian client. They're probably being built still.
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  #8  
Old 02-19-2003, 08:58 AM
Uli Uli is offline
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If you are looking for something like a modern J class then you should take a look on the links I`ve posted

This is a 72 ft. carbon version of the Endeavour called
"Haven can wait" for sure it can if you have this boat!!!!!

http://www.nissen-yachtdesign.de/index2.html
you just cilck Einzelbauten and then 72 ft. Classic Seekreuzer you will also find some plans of it.

but they are also building a 50 ft. one in wood

http://www.bootswerft-wagner.de/Neuh...neuheiten.html
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  #9  
Old 02-21-2003, 12:24 PM
poul poul is offline
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a one-design by Danish Marine Design



looks like a fair deal to me

more pics at http://www.sletten-boats.dk/
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  #10  
Old 02-21-2003, 07:49 PM
Polarity Polarity is offline
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Hmmm

Needs more varnish...
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  #11  
Old 02-21-2003, 11:30 PM
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Jeff Jeff is offline
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Wow! Beautiful.
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  #12  
Old 02-22-2003, 11:19 AM
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Hi,

I'm having here my GRP-boat of 35ft at Mallorca, Spain for charter, my neighbour in the harbour showed me a few weeks ago some plans of such a boat like you described. He is thinking about an order - he does not want to sail hos jeanneau anymore. God give ME some more money to do so!
Some German guys designed it...if necessary I can ask him for more details and the address of the designer and the shipyard. He told be about a quite low price...

regards

Emilio
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  #13  
Old 02-26-2003, 06:45 PM
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Stephen Ditmore Stephen Ditmore is offline
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Check out www.sheevra.com
- a very beautiful recent van de Stadt design. I'm very taken with this boat, which I just now stumbled across.
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  #14  
Old 03-21-2003, 06:42 AM
User_U User_U is offline
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Hello,

I think it is possible to buildt such a boat because we will do itwithin the next weeks - maybe it is not 100% the same you ask for, but for 90% it fitts

A 40ft modern retro cruiser withwestsys. epoxy and mahagoni, standard equipment in a high quality with a modern rigg.

Depends on the customer when we will start to biuldt - hoepfully within the next weeks.

Greets from germany
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