The Boat Design & Boatbuilding Site
Yes. I know. I'm just puttering along. As I'm not a professional boat designer, this endeavor is also a dive into the CAD program and it's abilities and getting to know them. I do have some preliminary sail arrangement, but it's not worth showing yet.
This is the bounding box. Numbers in mm:
BlueBell
. . . _ _ _ . . . _ _ _
- Joined
- May 7, 2017
- Posts
- 3,445
- Reaction score
- 1,323
- Location
- Victoria BC Canada
If you want meaningful feedback it is worth showing.
Yes, but I might also get some questions... I mostly show what I've got as soon as I have something new.
Last edited:
Something like this, maybe? It's a first draft and some calculations would have to be made.
Last edited:
3.5 kg bulb keel in steel.
And a video here (boat takes a 360): https://rumble.com/v7g8mge-sailboat-design-in-freecad-with-sails-and-bulb-ballast.html
And a video here (boat takes a 360): https://rumble.com/v7g8mge-sailboat-design-in-freecad-with-sails-and-bulb-ballast.html
Last edited:
What's the intended use? It looks like a beamier, slightly shorter version of a Marblehead given a very short rig and fin (keel on a full size boat). THE AMYA - American Model Yachting Association https://www.theamya.org/BoatClassDetail.asp?BCID=36 In some ways, it is more like a vintage Marblehead than the more recent ones. That stern overhang shortens the waterline length. The overhangs on full scale yachts were sometimes meant to shorten the waterline to give a more favorable rating. This could lead to some bizarre hull distortions. An extreme example would be Nathanael Herreshoff's Wanda.HMCo #490s Wanda https://herreshoff.info/Docs/S00490_Wanda.htm Check out the hull model on that page. Or look at the lines drawing by clicking on the thumbnail on the right. When heeled, the waterline would get longer. I wonder if Wanda wasn't faster "tacking" downwind rather than keeping a straight course.
Hi,
The intended use is on the pond, or even in sea if the quality of the finished boat encourages me. I guess the Marblehead is pretty quick and light. I'm not aiming particularly for a quick boat. My boat would need to be about 7.5kg to float approximately like on the pictures. The length of the fin keel and size of the sails will probably change when I find the will to do some calculations on them. And maybe an electric motor for low wind propulsion and interchangeable fin keel. It's all in the air. Hmm, that Wanda boat...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making any potentially dangerous or financial decision, always employ and consult appropriate professionals. Your circumstances or experience may be different.
When making any potentially dangerous or financial decision, always employ and consult appropriate professionals. Your circumstances or experience may be different.
Advertisement:
