It's obvious, really
Displacement boats are limited in speed by the water-line length
12 inch long yachts (footys) are limited more that bigger ones
So a fast racing Footy must not be a displacement boat
the options seem to be:
Planing - noone has yet seen a footy plane while sober
Hydrofoil - there is a secret project known as Pants/BLX which cannot be revealed (yet)
Submerged hull - see my new creation ZBF which took to the water early this morning
The pure concept:
The real boat:
And out of the water
As I said it's obvious really
The Hull is the black torpedo shape - it contains:
the batteries, (4 x AA, laid down by the rules)
two servos
receiver
not much air
lead ballast
Access is by untaping the nose cap (at the moment)
The odd-shaped cream coloured bit I call the Buoyancy Compensator. or BC.
It touches the surface at rest in calm conditions (like this morning's photo), but as the boat heels or dives it presents a greater volume to resist the leaning.
The sail is a MacRig (but you knew that) and is footy legal - less than 12 inches above the box.
Sailing trials next
Oh, yes, the servos drive rudder and sail sheet arms via carbon fibre concentric torque tubes - you can see the operating arms at the top.
Now for something a little less conventional
andrew
More details available if anyone is interested;it is perfectly reasonable to shake your head, pityingly