Fuel and Gear lbs.

Pontoon boat hull speed calculator. Hull speed in knots equals 134 times the square root of the waterline length in feet HS 134 x LWL. It happened back in 1978 when a speedboat used a jet engine instead of a propellor to power the boat. The Square Root of Total Shaft Horsepower.

Calculate the hull speed if the boats waterline length is 12 feet. Enter the high end of the operating range established by the engine manufacturer or the maximum RPMs. Two hulls allow the boat to be more stable and sit on top of the waves while a mono-hull vessel sits in the waves.

Enter 165 to 225. When you are sailing this can make all the difference as the displacement is different for a pontoon than more traditional vessels. 4551 The recommended maximum power in kilowatts marked on a capacity label for an outboard powered pontoon vessel is determined in relation to the length of the pontoons squared and the diameter of the pontoons as follows.

Empty Hull Weight Engine lbs. Theoretical displacement hull speed is calculated by the formula. MaximumPower kW 3 X Lh X Lh X Dp.

Waterline WidthBeam in Ft. Number of Passengers 170 lbs each. C 150 190 210 Enter Desired maximum speed.

The boat is now supported by small planing forces and larger buoyancy forces. With a 115 you should be hitting the optimal speed even if your boat is pretty well loaded down with people. H 134 12 134 346 h 464 Hence the hull speed is 464 knots.