Thank you all. Sorry, if I was unclear. What I'm asking for is some sort of quantifiable amount to help me consider the issues. The speeds...
By small boats I a sort of full displacement, human powered motorsailer, a 50/50 row sail boat, like a Solway Dory sailing canoe or one of Atkins...
I've been struggling to get any real numbers on it. The calculators I can find for arrow range are made more much lighter arrow weight, around 77...
'they could tow their maximum load of 22 tons at 10 mph even with a single horse' I was actually reading about that last night, trying to find...
I have this theory that all the important concepts an enthusiastic amateur could come up with probably wrapped up by the 1950's, that the future...
Fantastic, thank you. Now I just have figure out how to put this information to use when there is no bank to walk on.
So, it's not an unreasonable rough estimate that in these human scale numbers: small boats, low total speeds, etc., due to the effect of both...
It would seem to me that a paddle, oar of propeller is just a very low head pump, and that by moving the boat by pumping water, you have to do the...
So, what you're saying is that it is entirely propulsive efficiency. The goal is to generate, say 30 lbs of force. It takes X amount of energy...
Does tow path towing take significantly less energy than on-boat propulsion (oars, propeller, etc.) for the same speed? If so, why? In my...
So I am barking up the right tree then, as it were. :) I'm frustrated with myself for reading these articles, and those kind of books (though...
Short version: A sail is a single part of a highly integrated system. Is it even possible to realistically compare different sails if they are...
That makes sense and was my concern, thank you! It also highlights somethings that confuse me about scaling. If I make a half scale model, half...
I have a very specific idea of safety and that particular kind of safety is the most important thing to me. (1.) The safest trip is the one you...
For many years I've wanted to design a blue water sailboat for soloing in dangerous waters. That's a stupid idea for numerous reasons, not the...
Why 30>40'? I understand the benefits to a smaller boat and a bigger boat, but why is 30 - 40 feet the Goldilocks zone?
I want to thank all of you for your fantastic answers so far, this was exactly what I was hopping for, and I'm also intrigued to see what other...
A lot of people have this dream of sailing around the world or the like, and come to the forums (this one and others) with the idea of "saving a...
The hope I had for the pivoted arm was two-fold: (1.)Not shown in the picture, I was thinking about putting a buoyant counter weight on the...
To me, it seems like it would, because the lift forces on jib and mainsail would work on the pivot of the mainmast, something like the way...