WebFORMULA TO CALCULATE THEORETICAL BOAT SPEED If you have the following information you can calculate the efficiency of your propeller and boat: The engines RPM at WOT. (e.g. 6000 RPM) ... High speed planing boats - 30 to 45 knots - 20% Planing race boats, vee-bottom - 45 to 90 knots - 10% Stepped hydroplanes, racing catamarans - over 90 … WebThese calculations apply to planing vessels that operate at a speed length ratios, V / LWL1/2, of 3 and greater. Vessel's must have a aft quarter butt exit angle of 2 degrees or less for …
Boat Speed Calculator pofishing.com
WebUse this Boat Horsepower Calculator to estimate the power required to efficiently move your skiff. See the article “Do You Really Need That Much Power?“ Use English Units (pounds, … WebNov 27, 2013 · A quick 'seat of the pants' formula I have used for absolute minimum planing speed is V (knots) = 4 x LCG/ square root of B LCG is for'd of the transom. (usually about … dyson fan and heater review
Boat Speed Calculator
WebOct 6, 2008 · A useful formula for estimating theoretical top speed for a planing hull is: mph= [square root of (HP/weight)] X bottom factor. The bottom factor is an estimate of water drag on plane, where a flat bottom is 250, a deep vee about 150 and other hulls somewhere between. My 17' Boston Whaler bottom factor calculated to 195. Frank … WebHull Speed Formula. Theoretical displacement hull speed is calculated by the formula: velocity in knots = 1.35 x the square root of the waterline length in feet. Example: The Odyssey 18 rowboat has an overall length of 18' and a waterline length of 17'-7". On the chart 17'-7" is about half way between 17 and 18 feet, so hull speed is 6.5 mph. csc wildcats football