Hi Darek. The cat's name is Isis. Like the Egyptian god. The end
caps are 3/8 inch thick AS 516-70 steel at 84 inch diameter and the
inside height of the hull is 52 inches. Not enough room to stand but
enough to crouch down while adjusting the seats. As for stiffeners, I
still need them and have begun the fabrication.
The model is made of fiberglass hand laid over foam molds for
the front and back while the dome parts were done using an old BBQ
propane tank as a mold.
The hull is very roomy inside and pretty much all of it can be
reached by simply leaning over. With two people sitting side by side,
there's still lots of room. Frank D.