That is really a tough question since, depending on the boat and builder preferences, rudders and turn fins can be anywhere from 2" to 6" long. To make it even harder, there are boats that have tall verticals and some that don't have any verticals at all. Cowls come in several heights as well, considering you have the very low cowl on the Lauterbach Special to the much higher turbine intakes used on the modern boats. I'm sure many, me included, are wondering why you ask. Knowing the basis behind the question may let us help you more than trying to throw out approximate numbers and hoping they help.
Wayne, the MHR gives hull length, depth, width, afterplane, tunnel and picklefork dimensions. There isn't any listing on height from deepest to to highest points. There isn't even a depth given for the sponsons so, in this case, I don't think the MHR will be of much help