....
http://home.maine.rr.com/rlma/Challenger_Class.HTM

All three home pages have arrangement plans for the boats and there are even
some videos if you look around.
....

Thanks for all that. Not every designer in the world is willing to
share lines drawings. When I bought the design for my current boat I
had to sign a NDA with the designer and return the plans on
completion! Anyway, since you've been generous with sharing your work
I'm going to be rude enough to ask some questions. Feel free to
ignore them! I'm curious about why you've chosen jets for the new
design. Is the cruise speed higher? I'm also fascinated by the bilge
keels. Are they just to help the handling?

-- Tom.