If it had been steel, it would not have made 1/10th the cruises it did,
because it would be too heavy to trailer so easily.



Gilligan wrote:
If it were steel you could have welded wheels on to it to save weight by
eliminating the trailer.



Wheels? We don' need no steenkeeng WHEELS!
http://www.mciwest.usmc.mil/images/amphib.jpg

DSK