On the hydro dynamics of flat bottomed kayaks

[rwatson]

So… Moths are Apples or Oranges??

Do you Paddle a Moth, or Sail it ???

 

[rwatson]

Here’s a neat quick build method

Cajun Pirogue Wooden Boat Kit and plans https://www.unclejohns.com/boat/

Pull the top of the sides apart, set with a stick the max beam location you’d like, and create different rockers & beams, plane/sand the chine logs, and attach bottom.

you can build models quickly out of model ply or balsa, tape the ends together, and yoke test (a la Bethwaite) different rockers, flare, etc.. up to 4’ is easy, since you can buy, for example, 3’ balsa sheets from hobby supply houses, so you don’t even need to do much cutting. Increase the number of cross sticks to experiment with prismatic.

First canoe I ever built was one of those. Paddles like an inflated mattress.

Very tiresome.

 

[Paul Scott]

First canoe I ever built was one of those. Paddles like an inflated mattress.

Very tiresome.

which one? Length? Prismatic? Flare? Rocker? Beam? Sit down paddling? Knee paddling? Paddled like a mattress at all Froud numbers? Like a deflating mattress?

 

[Paul Scott]

Do you Paddle a Moth, or Sail it ???

A skinny low rider? More like swimming. At least at first. At that point, laying on its side, it doesn’t really matter if it floats like any kind of fruit. People will ask if you’re ok though.