Mr. mb. I suspect Mr. Tad was describing her length (100') and her beam (18'6" to 19') NOT her draft in post #1973.
I've noticed from several of your other posts that you seem to have a fixation on bottoms...Hmmmm...
Looks like a Menorquin. Strange features with that Viking-like bow/keel and a very substantial hull extension/swim platform. Beautifully finished vessels but with twins, I bet they are hard to work on.
Malibu made the news, particularly in the local boating magazines, when she was run hard onto a rock in Wasp Passage in the San Juans. Very experienced skipper at the helm and I believe the rock is well marked on the charts although I don't think it has/had any marker physically on it.
The consensus in the boat magazines and letters to the same seemed to be that the skipper simply did a dumb thing. Just about everyone who goes through Wasp Passage is well aware of where all the rocks are and even if they aren't if one relates where one is on the chart (or plotter) to where the rocks are it's pretty easy to miss them by a lot.
Bottom line as I recall it there was no sympathy for the captain/skipper in this incident.
You can see the stern wave under the stern of the boat in #1977 to some degree pushing the boat along. More or less surfing. The shape of the stern helping as it's shaped much like the wave. Most other sterns increase drag. But the SD sterns help the boat run level providing support aft minimizing squat. Great picture showing the wavelength at about hull speed.
It looks like this one has the flat plate at the water line aft performing much like the anti-squat plate attached to the cavitation plate of OBs. She's not squatting in the stern at all. Maybe running a bit high actually.