Question

One more please, I cant figure out the equations.

Boats generally have a hard time traveling faster than their hull speed, which is thespeed of a water wave that has the same wavelength as the boat length? (a) What is the hull speed for a 5 meter canoe in deep water? (b) What about for a 100 meter long ship? (c) What about for a 10 cm long duck? (d) Whaat about for a 5 meter canoe in 10 cm deep water?

So I know that the wavelength= 5 meters and I need to find the velocity of the hull so I need to use v= f x wavelength but how do I find the frequency of the deep water?

Answer 1

As a very general rule the maximum speed of any displacement hull--commonly called its hull speed--is governed by a simple formula: hull speed in knots equals 1.34 times the square root of the waterline length in feet (HS = 1.34 x √LWL).