When you multiply everything (hull length, mast height) by a factor of...4(?) all you've done is quadrupple the money required, and created a logistical issue with the huge wings.
When boat length is multiplied by a given factor, sail area and hull surface go up by the square of that factor, hull volume by the cube and structural stresses by more than the cube. My guess is that the price would go up more or less by the cube.
So, if the factor is 75 ft / 25 ft =
3, price would go up
27 times.
If a C Class costs about
$ 300,000 (guessing), a 75 ft winged AC cat would cost between
$ 2.7 to 8.1 million, or about the same as the Open 60 tris. Not too bad, if we compare with the last ACs.
