IOR Yacht Design

IOR Yacht Design was a set of rules developed in the 1970s-1980s to create fair and competitive racing sailboats. It stood for the International Offshore Rule, guiding designers to optimize boat shape, weight, and sail area for better performance. This standardized approach allowed different boats to compete fairly. Over time, IOR influenced yacht design significantly, leading to innovative hulls and rig configurations. Today, while IOR is no longer the main rating system, its emphasis on performance and safety helped advance modern yacht design and racing strategies.