A jiffy bag http://opendataricostruzione.gssi.it/blog/index.php/uabmedicine-baptistcom-9558.pdf#enjoyment uabmedicine-baptist.com  While 20-plus knot winds are not unusual on the bay and are acceptable, though brisk, for pleasure cruising, they can supercharge the high-performance AC72s capable of sailing at more than twice the speed of the wind.