The absolute best answer doesn't seem to directly reply to the question.
The safest boat in a nasty blow is the one crewed by a prepared skipper
. That doesn't mean possessing incredible amounts of experience, or intangible seafaring skills. It just means someone who understands some fundamentals (how to heave to, how the specific boat handles in windy conditions, how to run away from a storm instead of into it, etc..).
The other important part of the equation is preparedness. Having the proper sails
, spare lines, shackles and blocks, and a serviceable sea anchor/drogue are far more important than the geometry or rigging
of the boat. All
well-made cruising boats can handle rough weather
, if you are well-prepared and know the protocols specific to your boat.
So the simple answer, as hinted at in a previous post, is this: whichever hull
design has the best prepared skipper
is the one that will handle adverse situations best.