[Wersy] has been trying out different designs for 3D printed RC boats — his latest is a hydrofoil! He based the hydrofoil’s profile off of NACA 63-412, a typical profile for sailboat hydro ...

We’ll go out on a limb here and say that a large portion of Hackaday readers are also boat-builders ... The keel meanwhile is a 3D printed sectional mold filled with concrete.