Dangerous Dave

The first one that comes to my mind is a Hustler

amx1972

I was not to sure . I have a 91 40 Fiore with a single step so I thought it might be close. Was the 40 the first production boat with a stepped hull? Or did Hustler make all their boats around that year stepped? Its funny how many people cant belive a boat that big 13,000 lbs with trip bone stock 502s will run 75 to 78 mph. GPS. 78 on 3 to 4s lake Erie with over 400 hours on the motors and 6 people on board. I love this boat

BradH

Theoretical maximum speed is commonly referred to as "hull speed," computed as 1.38*(Lwl)^.5, where Lwl is waterline length, not length overall.

Some slight variations exist, I believe one includes wetted surface.