Hull Speed Calculator
What is Hull Speed?
Hull speed refers to the theoretical maximum speed a displacement-hull vessel can travel efficiently through water. It is determined by the relationship between the boat's waterline length and the wavelength of its bow wave. When a boat reaches its hull speed, its bow wave and stern wave synchronize, creating constructive interference that allows for efficient movement. Beyond this point, moving faster requires significantly more energy due to increased drag and wave resistance.
How to Use the Hull Speed Calculator
- Step 1: Measure or determine the waterline length of your boat in feet. This is the length of your vessel at the height where it meets the water's surface.
- Step 2: Input this value into the "Waterline Length" field in the calculator provided.
- Step 3: Click on the "Calculate Hull Speed" button to compute your boat's hull speed.
- Step 4: Review the displayed result, which will show your boat's theoretical hull speed in knots. The explanation below will also provide insight into how this value was derived using the formula \( V_h = 1.34 \times \sqrt{L_{\text{waterline}}} \).
- Step 5: Use this information to better understand your boat's performance limits and optimize its operation accordingly.
This tool is ideal for sailors, engineers, or anyone interested in understanding their vessel's performance capabilities.