Year is 1968. Kent Markham, a math teacher at John Gorrie Junior High School in Jacksonville, Florida, designed and built a one man submarine. He calls it a semi-dry submarine, be- cause the upper part of your body is out of the water at any depth and you are breathing freely without wearing a mouthpiece or mask, although you can wear either if you choose. It's a vehicle sportsmen — or even serious divers — might enjoy using.
.jpg)
Social Plugin