How Fast Does a Topper Xenon go?

Now that I am in my second season of racing the Topper Xenon, I am starting to get interested in just how fast we might be going!

There is a formula for calculating the maximum hull speed of a boat which is....

HSPD = maximum hull speed in knots
LWL = hull length in feet at waterline

I will need to make a few minor assuptions - the length of the Topper Xenon is 4.5m and this will be assumed to be the LWL which in feet = 14.764ft


HSPD therefore = 4.37 knots (8.1kph or 5.02 mph)


Now here's the real key thing to understand about how you are going to win races. You have got to learn to plane because when you do the formula goes out of the window.