The Queens of regatta

It measures 390 centimeters long, 63 width, 25 depth…It is round bottom, volume is ranging between 300 liters and 350 liters, the centreboard can be straight, semi or fully retractable. It is very performing upwind, quite fast but technical on the reach, a nightmare downwind in windy and in choppy water conditions. It can be routinely sailed between 5 and 25 knots of wind…What it is?