The boats are on a glide the entire time of the graph, if that was what you were asking. Your curve is resistance vs speed like the one I've...
Actually, that was the conclusion: "No diff with flotation under hull, big diff on edge." But to state it a little more analytically, using two...
Uhh... that would be me. Welcome to my laboratory. No diff with flotation under hull, big diff on edge.
Thanks; I wish I could have done that. Would it be too general a statement to say the following? As long as as the angle of heel does not...
Right, but I'm picturing it more like this at small angles. I don't see the CoB movement being influenced at all by the increased volume under...
So as I currently understand, initial instantaneous stability is dependent on the waterplane inertia, which is mostly a function of width (or its...
Thanks for all the suggestions on refining the glide test, and on alternative tests. Now I'm tempted to carve some different models out of foam...
It would be nice to have a towing rig, but this is a simple one-person test with no investment in equipment. I set up the camera and tripod on...
I’ve been playing around with an easy, on-water means of comparing the efficiency of human-powered craft (canoes, kayaks, and paddleboards) which...
Thanks, Leo. And I will note that the quest for more knowledge and answers never stops. I, for one, never give up.
Not at all. I've always had great faith in, and dependence on, math and science, and especially math, for which I have a degree with highest...
I guess I'm trying to get the admission, or lack of dispute, that with the current state of hydrodynamics and boat design: a simple and...
I think that there is only one best answer given theoretical (call it magical) constant propulsion, because only one paddleboard will reach the...
Speaking of the state of hydrodynamics and naval architecture (of which I barely know anything), I bet I could propose a simple design problem...
OK, I'll accept those limitations. But why is it that in the 500 years since Da Vinci drew this study of water flowing past objects, we've...
That event was unrelated to the Molokai, which has such varying sea conditions that it's hard to draw conclusions from the times or speeds. But...
Oh, you're pointing out that the "mirrored hull" analysis can't hold up, at least here, because if you pretend that the fat short stern and its...
Here's some interesting data on kayaks FWIW. Greg Barton's Epic 18' (fast tour style) has Cp .58 (very high for kayaks) and LCB at .51,...
I'm picking up on a two-year old thread at...
Now days, more paddlers are interested in racing and "performance paddling." They often paddle within a few tenths of an MPH of where the craft...
