The exact same shape as Cache Tucker's "Classic Fish" digitally enlarged. See Classic Fish description for full back story. If you like the Classic Fish design but you're not a grom any more. This is a big kid / mid sized guy "Mid Fish" for those a little past the grom size fish. 
Full internal structure precision laser cut from Mahogany Ply or for $10usd more Marine Grade Paulownia 2.7mm Ply. 
Wood for outer covering sold separately ( See Paulownia and Balsa Wood Kits ) Fiberglass materials also sold separately. See Fiberglass Supplies. Full building instructions included.