Contact the folks here:
http://www.tallshipformidable.com/
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I knew the fellow that built these two boats. He has passed away now. The designer (into steel) was Tom Colvin.
http://www.thomasecolvin.com/
A year or so ago, I had an email exchange with Mr. Colvin about these boats and I think he said that he had adapted a James Rosborough wooden boat design to steel construction.
The boats were built to be private yachts and my friend oversaw the construction of both hulls. His story is a sad one of hard work and planning being overcome by tragic events. The second hull (I think) was never completed (rigged out) and just sat until these Boston folks got them both and put them to work.
Talk to the Boston folks and if the design is for you then get a set of plans from Colvin and have a yard build you one. Even if the Boston boat type is not the best hull/
rig for you Mr. Colvin would be one of the best designers to discuss this project with.
Best,
George
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ps. Suggest you contact some historic tall ship folks. One example would be the captain of the Delware Tall Ship Kalmar Nyckel. I have met him and found him nice and helpful. He has extensive experience/knowledge of traditional large craft and would certainly point you in the direction(s). Can't think of his name and can't find his card in my messy filing system but through the web site you could certainly get a message to him.
http://www.kalmarnyckel.org/
..... here it is:
Capt. David W. Hiott, IV
Email:
captain@kalnyc.org
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If you wanted to built in Steel (makes a lot of sense) then the Metal Boat Society would be a good organization join.
http://www.metalboatsociety.com/
and 'oh bye the way' Tom Colvin is one of the founding members.