Originally Posted by BelSkorpio
Sails are not flat but all sails require a certain amount of material to build them; I`ll guarantee manufacturers know exactly to (high degree of accuracy) how much material goes into the sails ! ie when they pay for materials) Anyhow its still not an argument for not measuring sail area correctly;its not difficult !!
Oh yes, I agree, but what I was hinting at is that "we users" cannot really measure the surface of a sail by simply considering its luff/boom dimensions.