Can anyone please shed some light on the nature of bows.
Why do so many boats and especially yachts have a blunt bow? At the extreme 'chin' or waterline (what's the correct name for this part?) there is usually a fairly sharp entry for the water, but as you look higher there often gets progressively more radius, and presumably, more drag. I can understand that a yacht rarely travels perfectly straight forwards which results in a slightly cross ways flow over the bow so a rounded bow will improve flow, but why make it such a big radius higher up?
In fact somewhere there's even a picture of a footy made out of flat plastic panels and taped together, (great idea) and it has a simple flat triangle forming the extreme bow, with the thin end at the waterline. The top edge must be about 3/4" or more across, a flat plate to cut the water. It would have been much easier to make this hull with a sharp bow by just pulling the sides in a little further at the top.
Surely making yacht hulls this way only increases drag, especially when downwind or punching through waves, so it doesn't look like a desirable feature to my untrained eye
There must be a technical reason for it but it's eluding me