Who will be the next Captain Nemo?

This is a link to a website describing a huge (65m) submarine that could be yours for $78m: http://www.nauticalniche.com/u...3.htm

Is this project realistic?
Whether or not, I find this Captain Nemo yacht to be really thrilling. I mean, the billionaire next door might have a yacht bigger then big -but so what? When you surface with your 65m underwater palace in the Port Hercule even Allen