LFH's modified sharpie, the arc bottom Meadowlark, was a self build shoal draft design recommended to me ages ago by a senior member. At the time I was planning on building Griffiths Waterwitch.
My only interest in Herreshoffs Meadowlark is the hull. He drew this hull with such clever lines in order that self-builders would not have complex curves and bevels to worry about. But I think he probably went a wee bit too far in his quest for economy and ease of build, when he dispensed with the main shelf, the sheer clamp, the chine log, and the floors... The planking was one and three quarters on the bottom frames, and one inch on the side frames. The frame spacing was two feet.
LFH says in the construction plans, - don't bother to loft it, just draw the frames on a large board. Well I have to say some of his offsets are well out... Which isn't unusual to find in a NA's offsets on a linesplan...
I really think I can build this hull, and I'm having an interesting time modifying it back, by straightening the bottom frames.
Of course this will reduce surface area, and change the displacement and make it lighter. I also intend to build in ply. Which should make her ultra light compared to LFH's heavy planking. His scantlings were well over the top, and the bottom frames were 3 by 2.
I just want to open a dialogue about this and hear what other folks might think. I've been using David Gerr's book to calculate the scantlings. But I'm not sure about the minimum number of frames I should use. She looks ideal and very simple to skin with ply.
The fact is she will be very very light compared to the original. The original sails beautifully and is quite fast, but she has ugly big leeboards that ruin the hull line. I much prefer to give her a drop keel. I imagine she will sail even better. The other issue was that she was not self righting, although LFH said she could weather anything, and if she went over she would float on her side... mmmm...
He designed a traditional two mast new haven rig. But by making her self righting, I also have the opportunity of changing her rig to sloop or cutter, which to my Scottish eyes is so much more pleasing
Obviously there will be issues and considerations that I haven't thought out, so I hope the forum can raise these.
I'm using Delftship to help me work it all out, and at the end of this exercise, I'll get a NA to check my work and calculations, before I saw one frame...