In NZ over the weekend a well found yacht was wrecked on the West coast after being caught in a 70 knt blow and despite starting out with more than 60nm sea room, she was driven onto the lee shore.
This thread is not to pass any judgement on the above event. It is never pleasant when a vessel is lost.
After reading some other comments one in particular stood out - That it's hard to imagine any 32 footer clawing to windward in 70 knt.
After thinking about that I wondered what people would consider realistic for the maximum wind speed (and correlated sea state) at which different hull types could sail to windward.
ie, fin keeler vs deep longkeel cutter of same waterline length.
I imagine that it is some ratio between the sail area that can be carried in a given windspeed, and the effective total windage, against some multiplying cofactor of the the lateral plane.
At some point I imagine that the sail area that can be carried to produce effective thrust is overwhelmed by the windage, therefore giving a theoretical advantage to the low wooded heavier displacement.