Thanks for sharing McBeck...looks like alot of fun.
Its funny too... there is a guy I went to school with that constructs these subs on that same site. I used to buy my school books from him. He used to save me alot of money. I remember watching him test his first sub out on campus. He has recently built a second one and is giving tours with it in Hondoras.
His submersibles are on same site:
First Submarine tested at school...
http://www.vulcaniasubmarine.com/KARL%20STANLEY.htm
Second submarine project...
http://www.vulcaniasubmarine.com/IDABEL.htm
His website where he now gives tours...
http://www.stanleysubmarines.com/
Note the depths of his subs....
one goes 750 ft (230 meters) and the other 2020ft (615 meters)