Joe Sundstrom Posted December 17, 2005 Report Share Posted December 17, 2005 I am looking for an inexpensive or free computer-assisted design software application that will convert a traditional. lofted hull plan to a two-dimensional layout for plywood stitch and glue construction. I have plan with a single, hard chine that was almost certainly designed for plywood construction. It includes keel, chine and sheer dimensions at regular stations as well as the half-breadths at those stations. I would like to be able to enter those dimensions into the program and then have it produce the two-dimensional layout for transferring to plywood sheets. Quote Link to comment Share on other sites More sharing options...
capt jake Posted December 17, 2005 Report Share Posted December 17, 2005 Graham has a program to do that. He may do it for a nominal fee. Quote Link to comment Share on other sites More sharing options...
JEM Posted December 19, 2005 Report Share Posted December 19, 2005 http://www.plyboats.com/ Quote Link to comment Share on other sites More sharing options...
Joe Sundstrom Posted January 1, 2006 Author Report Share Posted January 1, 2006 It is Gregg Carlson's free Hulls program. It does just what i required (see first message in this thread). Go to website: http://home.clara.net/gmatkin/softwr.htm Select "Hulls software." Select "Hull Design." Download both Hull Designer software and Gavin Atkins' tutorial. Grab your lofted plan with offsets (or create your own offsets from the drawing) and go to work. Joe Quote Link to comment Share on other sites More sharing options...
normoose Posted March 29, 2007 Report Share Posted March 29, 2007 I have Careen 4 and 5 on a CD or DVD somewhere. I wi;l look for it and notify the group when it is available. Norm Quote Link to comment Share on other sites More sharing options...
PAR Posted April 4, 2007 Report Share Posted April 4, 2007 The software listed will develop panels, but developing panels is the last thing you need to do for this type of conversion. FreeShip will permit you to import a lines drawing, place them under a new drawing and then you can develop the panels after you reconcile the new drawing with the old. The basic problem with all these low cost and freeware programs is they make fancy drawings and generate lots of numbers, which most have difficulty understanding, but they don't tell you if the structure will tolerate what you may ask of it, nor if it is a good shape for your application (not an issue with a known design). This requires an understanding of hull design, engineering plus the concepts and principles behind the stitch and glue methods we employ in many boats. In typical plywood over frame construction the majority of longitudinal strength is provided by the plywood and the athwartship strength, the frames. Furniture and other accommodations are generally along for the ride, though they do impart some elements of strength. Stitch and glue also gets it's strength fore and aft from the planking, but it's athwart requirement is handled by the furniture and bulkheads. Placement of these, particularly if you're interested in some level of performance, can be critical. Building heavy, just in case, is the easiest way to kill the abilities of a small craft (30' or less), power or sail. Which design are you "splashing" (which brings up some other issues)? Quote Link to comment Share on other sites More sharing options...
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