Re: Another America’s Cup entry destroyed
The reason for the 45's was to reduce cost for the AC series races. Since this format was optional I think they wanted cost to be as little as possible and make everything able to fit in shipping containers.
A 10kt reduction in windspeed from 30kts to 20kts is a ~50% reduction in power since sail force on a wing is proportional to the square of velocity. Seems like boats designed to capture up to 30kts of wind will be underpowered now relative to boats that were not or are still under construction.