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This helps me a lot in understanding junk design. It seems to me that if you want a deeper hull you just decrease the dimension of the flat area on the bottom of the hull, as I've seen in the Amoy Fisher/Trader. Junks decks are very high at stern and bow. This seem to me a way to increase the...

This week end I played with Freeship and Rhino, I wanted to try a smaller boat flat-headed and flat-bottomed. By observing the pictures you suggested me, and the books that I have, I decided to have a bow which is gradually increasing its rake, with la large radius curve. The stern, on the...

True! Thanks, good insight

Yes, I think it would be better to call it double or triple chine. Anyway, I would suggest the one with the lower number of chines. In my opinion any chine under water is a bump that slows down the boat.

Thank you so much!!! As you said, there are just few books on the subject, and most of them are focused on the junk rig - which is also very interesting. But now I want to understand better the hull shape of old Junks, and you gave me more info in two posts than all the book I read in years. I'm...

Thank you for the info, this helps me to clarify some things. The truth is that my main objective was to design a boat to build for me: I wanted it to be: - scow bowed, as I think this shape has more pro than cons; - very easy and cheap to build, as I want to be able to build it for real; I...

The first sharpie looks like a Jim Michalik AF series. The second boat - which I like a lot - is simple and nice, and I like the rig setting. I love very very much Chinese Junks. I collected all the info that I could and some great books on them, thanks to the Junk Rig Association, but...

The plan is to build the boat in plywood and epoxy (stitch & glue). Unfortunately the dimension you are referring is standard in US, but where I live - Italy - there are also different formats. No one of them is large enough for a one sheet bottom, though, so the advantage of a flat bottom is...

I like it. I actually have a flat bottom version on the design. The reason for which I preferred a V bottom is due to the supposed pounding of scow bows in a chop. I could try a flat bottom aft, and some v at bow level. Anyway, I love the design you proposed. Did you build it yourself? Is the...

Current state of the design. Trying to make it simpler and simpler..

Beautiful vessel!

Hello everyone. An update about the design. Many things changed again. At the end I have been able to workout a single chine version that seems fine to me. Moreover, there is no more keel, I switched to an internal ballast with leeboards. I used a bigger cabin top, and this gives me standing...

Dear All, I am designing a small sailing boat using Freeship. When I run the Stability Curves, the software gives me the following warning message: 'Amplitude of heel angle <2.0 !!!' (attached). Can you help me understanding what does it mean? Does it mean the design is too stiff? I was not...

I hope that's where I have the highest righting moment. If it was where I dont have any more positive stability I'm afraid I would capsize the boat just by jumping into her! :) Anyway, it was wrong. Max GZ is at 40°, and AVS 126°. Maximal GZ : 0.686 m...

Update: Lots of work done. Added details, added dimensions and offsets. Almost ready to start building the balsa model, just need to design a Jig to use. Here some details of the internal structure. DVV

This is a Colvin design, quite extreme, but I like it. Based on an old chinese junk (hanshaw bay fisher/trader). The bottom side of the bow seems to be curved (sides lower than center)

This thing you say its interesting and I did not think about it. Does you skiff have a keel?

The idea was to round just the bottom edge as you say, but I was not able to explaining it to the software I am just playing with shapes at this point, I still think I will stick to the 'double chined bow' design. I dont know exactly how to do what you suggest. I can set some wave height and...

Tonight I played with shapes again. I tried a round bow. Just to see it. I still think its too difficult to build. What you guys think?