|Grolier Encyclopedia. 1957.|
"Jesus, John, will you please stop that interminable whistling!"
I found this intriguing photo in an old encyclopedia I picked up. A little online research unveiled more information. It was so named because of its resemblance to a giant cannon ball. The American inventor, W.D. Sisson, seems to have collaborated with the more famous engineer, Simon Lake, on this vessel. I can't find any information on whether it was ever actually used, or what its ultimate fate may have been.