If the thought of being your own Captain Nemo makes you all tingly inside you'll definitely want to consider getting your hands on one of these new personal submarines being offered from Duch company U-boatWorx. German WWII sub references aside, the U-boatWorx subs look cool and are called the C-Quester line.
The C-Quester subs allow one or two people (depending upon the model) to submerge themselves to a maximum depth of 50 meters and a dive time of around 2.5 hours. Pressurization in the cockpit of these subs remains at a level whereby you don't have to worry about decompression sickness. Uboatworx also says boarding these subs through the cockpit is very easy as they remain stable like other boats when on the surface.
source- scifi.com
