In Principles of Yacht Design, Larsson suggests following trailing edge shapes, and their relative vibration levels are shown here. [ATTACH]
Savitsky, Morabito et al have been researching this, and their formulas are as attached. They used those to study stepped hull performance.
It is possible, that your antivirus is blocking it. Add it to the exceptions list there.
TMARK, Yes the renderings are made by me. I use Rhinocecros 5, that rendering mode is one of the standard ones, "pen". There is a lot you can...
The frames and the stem were erected on the jig last week. She's starting to show her shape. Fitting the stringers is the next job.
Here are some pics of stem and knees under fitting. There is also a more traditional version under design process. It will be of carvel or...
Hi SukiSolo, The limber holes issue was solved by making the frames 10 mm off the planking, they are not attached to it. It also excludes the...
The building of the prototype has begun. I'll add some photos here every now and then. Here are the frames, knees and stem, and some templates for...
Some papers I've spent some time in the wonderful world of the internet, searching for the online information about designing of boats and marine...
These are the safe download links for freeship: https://sourceforge.net/directory/os:windows/?q=freeship
The structural design is just about finished, here's how it should go together:
Or you can have laser-cut your own, these are nested on a 600 mm x 1250 mm sheet either acrylic or poly-carbonate (won't brake). Pdf shows the...
Hi, Messabout And thanks for the compliments. The weight considerations are there, but not first on the list. The main goal is to design a boat...
Some progress...
This little rowing boat will be made of 6 mm Vendia Marine Plank and Finnish pine, frames and knees of birch plywood. It is still under design...
Hi Paul, Iges export is usually like that, and the edges of the bunch of surfaces don't match very well. I would suggest that you export it as...
Hi Sigurd, Here's a paper that mentiones the issue, asymmetric cats though. There is a "sweet spot" in the wave energy at given speed, where some...
FreeShip outputs still work fine, at least in my win7-machine. The "bad nx" -output can be a result of a missing parameter or line somewhere...
One good calculator, with lots of interesting things to read at homepage, http://www.biorow.org.uk/RigChart.aspx
You could start with this: