One-Design's a racing method where all vehicles or boats have identical or very similar designs or models. It's also known as Spec series. It's heavily used in sailboat racing. All competitors in a race are then judged based on a single start time. One-Design can be compared with the Development Class, the classic example being the Americas Cup 12-meter class, or to the Box Rule(External Link) used for example in the TP52 class(External Link). However over the last 15 years a third setup has qui… (More on One-design)