Proto 2001 Design
I started this project in 1995. I had the
sailboat LeBlanc which is presented in this website. Even if
this boat was sailing well, I wanted more sailing waterline
length. So during the winter, I made plans on my head to modify
the end of the hull. Also I wanted to make another high
aspect low bulb keel to it. So I cutted out the existing keel ,
turned the boat upside down and begin to modify the hull with
stringers attached at the turn of the topsides and bottom. In
no time, I had a new hull shape with a chine making a flat
bottom toward the transom end. Then I looked at the front and
say, why not make a plumb bow and gain some waterline length
there to. So it is what I did. So the end result was a stringer
from the bow to the transom making a chine. All I had to
do then was making the skin and cutting out the old hull which
was free from the new one form inside. There is still something
like 12 feet of the first hull still inside.
And SuperBlanc was born.
I launched the boat the nine of September
2001. Two days before the fatidic date.
I was so surprised to see how well the boat
was going. Perfectly balance with just a little weather helm.
The boat was going high upwind and planning easily white
sail. But there was a teething problem. There was not enough
buoyancy in the front topside of the hull. So when heeling, the
boat had a tendency to dive the nose and take the end out of
water. Also the bulb was made in a hurray with a lot of frontal
And then the winter came and plans were
spinning on my head to modify the hull and make a new
bulb. So what I decided to do was to pull down the
bottom at the front from 7 inches at the bow to nothing in
at the keel region.
I will put photos.
And this is the actual shape now. Although
the problems are corrected and the hull behaves nicely, the new
lines are not blending gracefully. And there is still to much
pinching in the front topside to my taste.
This is why I want to do another boat. This
why I have designed Proto 2007, this time with the help a
Prolines, a sailboat design software. I know better what I am
doing for sure. But this new design is ideas and ideally
I would like to have it revised by a naval architect. I know
what I can do alone but I can use pro advices.
The following images are documents extracted
from the boat design software Proline. I measured the boat
afterward when it was finished. It gives
hydrostatics numbers and the lines of the boat in the 3
A designer will draw a boat using the 3 plan
view like the ones in the image below. He can move every lines
to shape he needs. Superblanc lines was measure after the boat
was completed. I did not have the software in the first place.
Would I had, the lines would have been different. But this is