Deadrise Meaning in Sailing

Deadrise represents the angle of the V-shape formed by the bottom of a boat hull. This measurement describes the slope from the lowest point of the keel up to the sides. A high degree of deadrise indicates a sharp hull that cuts through waves more smoothly. Boats with very little deadrise have a flat bottom and provide more stability in calm water. Designers choose this angle based on how the boat will handle rough weather and high speeds. One example involves a racing boat with a large deadrise angle slicing through a choppy bay. This shape reduces the physical impact of the water on the hull and the crew. A flat hull might bounce more but it requires less power to reach a high speed. Proper deadrise ensures the boat remains comfortable and safe for passengers during a long journey. Understanding this term helps a beginner compare the performance of different hull designs in open water.