David, another guideline is that the lower shrouds are some of the heaviest loaded in the rig, and so the headstay should be at least the diameter...
Hunterr, Interestingly, no one that I know of in the modern world of boat design has ever written or discussed any guidelines as to how to make a...
Hi Chris, What you propose is indeed, "anal." I do not know the history of Copenhagen ships curves, but I do know that they were never marked and...
Digitalis, Welcome to the forum. I am retiring at the end of this year, and I have a set of 20 ships curves that I bought when I was a student...
Those are called "line tender" winches. Andersen Winches in Denmark makes about the only one I know of:...
I am not sure you will find a standard series of propellers for such a craft. Human powered propellers turn relatively slowly, so in order to get...
No, there is no simple formula. It is an engineering problem with inputs that include the righting moment of the boat, the sail area and the...
About Time 1: Welcome to the forum. Tempered glass is about 10 times stronger (literally) than laminated glass. Unfortunately, when tempered...
Isvflorin, if your only reason to include aramid (Kevlar) in a laminate is to bulk up the outside skin, you are approaching the laminate...
That should likely be enough. A bury depth of 10% of mast height is a good rule of thumb to go by. Eric
Yes, I designed such a rig. Actually, it started out as a completely unstayed rig for a conventional ketch design (jib. main, mizzen), a 49'er...
I did a study for a client once back in the early to mid 1980s for a "boat-in-the-box." I studied the available containers at the time, and the...
Hi Vronsky, The Scandinavian Cruiser 40, a daysailer that I did for Scandinavian Cruiser Yachts was intended to be shipped in a container. This...
You might try consulting a series of books (7 volumes) called "The Real Runabouts" by Bob Speltz. This series was a labor of love for Speltz who...
Hi Dennis, I have absolutely no experience with free hull design software as I don't use it. I have been using Pro-Surf from New Wave Systems in...
Hi John, I don't have a copy of Coles' book in my library, so I am writing from memory. As Richard reminded me, the boat Coles was on was too...
Richard, I think you are right. But it was possible to do, and on Wobegone Daze we did change buoyancy forward to get the boat to change trim...
Hi Dennis, I am glad my efforts on Wobegone Daze gave you some guidance. What you propose, as quoted, is exactly how it is done. It will likely...
Thanks, RHP. At the moment we are concentrating on shape and volume in the hull form, which necessarily is being developed with a round bottom...
All of the above. Ocean rowing boats go really S-L-O-W, so wetted area is really of secondary concern. Whether you are long or short on wetted...
