JD, a couple of years ago you gave me the dimensions to Carrianne's mainsail (did you use Culler's 99sqft spritsail as a model from Skiffs & Schooners on p. 112?)and drew it to scale today. Why? I'm thinking of converting Parker's Small Ohio Sharpie to a spritsail ketch. Anyway, after drawing it up and doing the math to figure out the COE, I found I was looking at a 106sqft spritsail rather than a 100sqft as I expected. I used the following dimensions:
Diag throat to clew: 13'5"
So, I have a couple of questions: Is my geometrical draftsmanship off?; My math?; or is the sail really a little larger than 100sqft?
PS: I drew up Culler's sail from the drawing of his Good Little Skiff in S&S and it came out to 72sqft instead of 70. As my son would say, "What is up with that?" [img]redface.gif[/img]