We can use the building concept of this paper tiger to get a rather simple but modern looking F12 hull. Not torturing of ply involved, just bending flat plates in one direction.

I'll try to give a summary of my idea this evening.

The following picture should be enough for some to understand what I mean.




Blue is the stern frame, red is a frame very close to the bow, black is a midframe. In each corner (between two sheets) there is a stringer to which the panels are attached. Lets say they are screwed and glued to these, were the screws both act as fastener and glue clamps. All panels are curved (bend) perpendicular to their own plane given them stiffness and they are saturated with epoxy. The bow itself with a something like a vertical "stringer" to hold the two side panels.


The things I'm after with this are :

-1- simple hull contruction using a frame jig with stringer over which flat plates are folded and fitted

-2- some planing potential as Phill once mentioned to me that he felt the paper tiger could plane. Both designs use the seem V-ed keel setup.

-3- A modern outline of the hull when viewed from the side. Because of the tumblehom of the sides the bow will have a wave-piercer look.

-4- The keel line is fat while the tumblehome will make the decks narrow. In effect we have copied the volume distribution of the wave-piercers in a rather crude way, but this succes modern distribution is there nevertheless.

-5- having a rather vertical hull so that the hull will track without the need for daggerboards or skegs.

-6- Keeping the hull small while having enough bouyancy. Especially keeping the wetted area small for the bouyancy designed into it. V-ed hulls aren't very efficient here.


Wouter