How is the resistance when pulling a boat in water depending on the speed of the boat?

The force of drag on any object in a fluid is given by D = 1/2 CpAV2 where C is the drag coefficient, p (which is actually the greek letter rho) is the density of the fluid, A is the effective cross sectional area(A fancy way to say the face of the object) and V is the velocity of the object. D is in Newtons. Hope this helps whoever asked. --An AP Physics Student Bored in Study Hall