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If you only need it for one boat, you could use the time limited trial version of Rhinomarine, download at www.rhinomarine3d.com

I am not a professional, but a amateur builder, although not for the first time ;-) and most of the boats I saw being built were built by first time amateurs. That means: without heavy tooling, and usually welded by non-professional welders. plate thickness: that depends on the shape and...

xarax, I would not know about rocker chairs, but on the half a dozen steel boats that I built myself and the dozens of steel boats I have seen built over the years around me, all by amateurs, there's never been any hammering of plates whatsoever. As for the "hills and valleys of this strange...

I would of course not pretend to be able to calculate that in advance ;) it is simply that fair radius chine hulls, origame and even round chine hulls have benn built, for real, by amateurs, and that this is possible. For me, there does not seem to be the need to start a hunt for the...

Actually not... what happens is that steel plating (or sections of tube) , when cut or welded very rarely end up developable. If you take a flat sheet and cut a piece out of it, this piece will not remain flat but have a double curvature in it. This is caused by the heat-shrinking of the...

Great Job, Wynand, and I am sure that will grow over time into a nice place where people meet. It takes time and work, but it's well worth it. Good luck and fair winds! ;) Just 2 small technical hints: - it might be nicer to open the new page in the same window - now, if it opens in a...

Well, in this case I would correct my estimate to 10 to 12 years at least ;) You will need to decide: do you want to HAVE or to BUILD? If you want to have a boat, better buy something second hand and go saling now. If you want to build, you should be very clear about the fact that the...

Tzuriel, if want to know the number of hours to see if you can do in a given time, forget it. An amateurs build is counted in YEARS anyway, and whatever the number of hours you will put in, project time depends on many other things that do not enter into the calculation of the hours. To...

I think it would help to separate the issues here 1- protecting the plans against changes, mostly by accident. If you send some CAD format like dxf and the guy gets a CAD program, plays around with it and because he does not know how to use it he will make some nonsense and find himself with...

(yet) another problem with round kitchens is that they waste space. Round things can't fill corners. If it's integrated into furniture, like the round turning trays for pots and pans in kitchens, you don't see it so much, but you still have less stowage space than if you would fully use the...

thanks for plugging my link, ... but there was no permission necessary (and it was not asked for or given either anyway ;) )

that reminds me of somethng I found elsewhere "...Aoccdrnig to a rscheearch at an Elingsh uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht frist and lsat ltteer is at the rghit pclae. The rset can be a toatl mses and you can sitll raed it...

hmmm... after 3 times it's no longer considered a typo.... it's "Heinlein"... ;-)

Thanks Milan, I was not aware that that one was aluminium as well... I think the real reason racing projects go for composites is that they allow you to sculpture your strength in a very detailed manner, sort of following your FE stress graph and build everywhere just the amount of strength...

there was Van den Heede's 3615MET in the '89 Vendee Globe Challenge, returned for almost every globe, among others with Isabelle Autissier

a nice calculator at http://www.allersoft.com/allercalc.htm

Yes, you can do more divisions and thus spread the hard transiton between the chined and the forward and aft conical sections over several darts. Basically the transtion is harder and shows more "knuckle" the bigger the inside angle of the dart - in your example the darts are very long and...

So it's a real existing boat you are going to cut? Meaning you will add a serious structural problem to the already mentioned design issues? ;-) I have seen boats cut across the beam to lengthen them (usually also not a very good idea) but cutting a piece lengthwise out of the center beats it...

just remembered: there is a very short intro at http://www.tedbrewer.com/yachtdesign.html After that there's lot's of good books.

Nothing... ;-) the problem is that if you want to design a boat, you would need to understand these numbers to begin with, at least the most important ones, and you would then not need to ask here. There is no right or wrong, they simply desribe and analyse a boat in such a way that you...