New project Stepped Hull Sport Boat

[Dobermann]

At the invitation of Ron, I post a photo of his new boat.
While the construction process:

P.S. Sorry for my english:)

[Dobermann]

Length of 17 feet, the planned power of the engine 170 h.p.
I use motocycle engine (inboard) Honda VFR 1200 FD with two-stage transmission.

[Dobermann]

I use self-made Arneson surface drive:
calculated speed - 68 knots

[curbman]

Great looking boat and work !

[Dobermann]

Thanks!
As the work will post new photos.

[chris3298]

Thats awsome, thanks for sharing the pictures.

[Dobermann]

Began make ship's skin. It will be a sandwich structure, core - polyurethane foam Divinisell Diab, density 60kg/m3...
Laminates of kevlar and glass...
This is a tedious and long work:)

[chris3298]

Began make ship's skin. It will be a sandwich structure, core - polyurethane foam Divinisell Diab, density 60kg/m3...
Laminates of kevlar and glass...
This is a tedious and long work:)

No kidding looks like it, thanks for sharing, this will be a very nice thread to follow as I am wanting to build a boat next winter.

[Yellowjacket]

Beautiful framing, but I was expecting it to be covered in plywood. Hard to beat plywood for strength to weight when you have that much framing already. Just curious as to why you are doing foam? I would think a foam core construction would require less framing than you have done here.

[Dobermann]

Beautiful framing, but I was expecting it to be covered in plywood... I would think a foam core construction would require less framing than you have done here.

You are right! Foam on the board only, everything to be covered in plywood. Board has a curved shape, and it is difficult to do using plywood. For rigidity and strength is not required as frequent framing, this is done for the correct form. Some parts of the framing will be removed later.
Better to have frequent and accurate framing, than make surface finish long time.:)

I'm so sorry!, but I have not spoken in English, and perhaps not always correctly say...
You know what I mean?:o

[Doubleeagle]

Will this be a running plug or prototype, to later build a mold from or is this a one off

[Dobermann]

Will this be a running plug or prototype, to later build a mold from or is this a one off

Prototype... After the test, we will do the matrix...

[wolfgang]

Admirable carpentry work! What software do you use? Good luck with your project.

[Dobermann]

Admirable carpentry work! What software do you use? Good luck with your project.

Thank You!
I use Rhinoceros and SolidWorks.
Some work on the weekend: