False bottom v on a flat bottom

Hello par, The information is there for those to see who are not afraid to learn something

Google "What floats your boat" www.teachengineering.org

 

Post a link with the section that specifically states your assertions, as I have my engineering degrees and don't need, nor want to look at a high school physics primer.

 

That'd be a cicada I can hear ?

 

False bottom v on flat bottom

I already have read post #24.
It pays to keep in touch and revise knowledge base, so many things can be taken for granted.

 

Far out ! (haven't said that for a few decades)

 

At first I was going to reply this is impossible, thinking about draft at rest. The density of water doesn't vary much with depth (a tiny fraction of a percent feet from the surface) because water doesn't compress.

Referring to planing, a boat doesn't need a huge area to plane on.

Are you talking about reducing or enlarging the planing running surface and what that does to pressure on that planing area?

Are you talking about a surface aeration or disturbance?

 

It's Tom against the world, imo, a contest in which one is always advised to back "the world" !

 

I want to hear what Tom is thinking or how he has tested his theory.
Don't worry, I have no plan to change my understanding of physics or buy anything based on two sentences.

 

He has already referred the sceptic back to post #24, which then must be the thesis. There is nothing there that advances the idea that a veed bottom draws less water, either at rest, or underway. It really supports the accepted principle, that a flat bottom can negotiate shallower water, all else being equal.

 

"..An easy to build upgrade.." for a flattie can be this:

In his book "Boats with an Open Mind"(page 69) Phil Bolger (+) discusses the merits as for instance "the shoe keeps her from skidding her turns".
If you like you can make the shoe bigger and have a box keel with interesting hydrodynamic results as with Bolger "Hawkeye" or "Microtrawler". http://duckworksmagazine.com/00/DM1999/articles/microtrawler/index.htm
If you like it hot: http://www.ace.net.au/schooner/fms.htm


Bolger wrote in "Boats with an Open Mind": "It's my belief that there has never before existed such a combination of sailing performance, power performance, usable space, lightness and compactness, and low cost..."

http://carlsondesign.com/projects/b...on-pictorial-of-my-box-keel-bolger-sneakeasy/

 

New thread. Boat design.

 

I guess threads must be flat bottomed because they can skid too.

Though I don't really see that as a digression because to some degree it can an intermediate response, keeping the flat bottom but gaining some benefits similar to a V.

 

Certainly an interesting concept, but I don't see "comfort" listed among the attributes......Surely will hand out a hiding in rough water ? I'd like to think not, but hard to see how it could be otherwise.

 

Tom's post contains a simple but fundamental error. The "area" involved in calculating buoyancy by adding up (integrating) the effects of water pressure pushing on a boat's hull is the area projected onto a horizontal plane, not the total area. The result of the integration equals the weight of the water displaced by the hull, and that is true independent of the shape of the hull.

 

QED !