WebSail area in sq. ft. Displacement in lbs. SA/D =. Bruce no. =. Caution & Warning.... Oh the ways we can deceive. As with the D/L ratio, the displacement figure used must reflect the real-world weight of the boat in the water. Where you're most likely to be led astray is … WebSail area to displacement calculator metric Ironically, it is, in terms of the mathematics involved, by far the easiest of all performance ratios to calculate: just divide a boat's sail Get Solution. Our users love us. This app has really help me with ...
Advanced Sailboat Parameter Calculations and Checks, Product ...
WebThe formula for this ratio is: ballast displacement ratio = ballast / displacement. In other words, it tells you what percentage of the sailboat's weight is in the ballast. The average value is between 0.35 and 0.45 for cruising boats. This means that on average, 35-45% of the weight of a cruising boat will be carried in the keel ballast. WebForces on a moving sailboat. (a) Sail and keel produce horizontal “lift” forces due to pressure differences from different wind and water speeds, respectively, on opposite surfaces. (b) The vector sum of lift forces from sail and keel forces determines the boat’s direction of motion (assuming there’s no rudder). classicware
Hands-On Sailor: How Sailboats Measure Up Cruising World
Web17 okt. 2016 · Sideforce in kg = 0.61 * Sail area * CL / 9.81 * AWS^2 a. CL is lift coefficient and varies with shape and angle and trim. Roughly, use CL=1.2 b. AWS is Apparent Wind Speed in metres per second c. rearrange above to get AWS = sqrt ( SF in kg * 9.81 / .61/Sail Area / 1.2) AWS in knots = AWS m/s * 1.852 7. Compare with boat performance Web25 aug. 2000 · This formula indicates how much sail area is available to push each pound of displacement through the water. It is non-dimensional in that sail area, which is in square feet, divided by the displacement divided by 64 to get the volume of displacement raised to the 2/3 power. http://www.cncphotoalbum.com/technical/sailsize.htm classic wardrobe design