One-man dry submarine project - Omniscience Futureneering

Here's an amateur project that has some technical notes on designing and building a one man sub. Nicknamed the Manattee, this is another interesting project by the Omniscience Futureneering group. I don't see much information on how it actually worked but you can infer that one or more dives were made with it. Also some photos of a nice looking two person submersible done by Karl Stanley.

  Omniscience Futureneering website