Need help from RIB experts-Double bended tube

[corsair.p]

Hi,guys.I am working on a RIB project.I wana my boat to be looked more curvaceous.Can Anyone tell me if the tube shape as attached pic shows can be easily formed or not?Some guys told me not because from the side view it's a double bend curve and the tube can be only formed one bend by doing something special on the front.Is that true?
Your ideas are appreciated.Thanks.
David
http://www.boatdesign.net/gallery/data/500/medium/double_bend_tube.jpg

[corsair.p]

No Reply?

[kach22i]

Don't some of the computer drawing programs has an "unfold" feature for pattern making?