London, England (CNN) -- From inside it looks like a swanky bachelor pad, kitted out with an abnormally large aquarium. But, this is no fashionable New York apartment, rather the latest in sub-aquatic luxury -- a cruise yacht that doubles up as a submarine.
Still at the design stage, if built, the "U-010 Undersea Yacht" would be the first to combine underwater exploration with all the comfort and style of a modern superyacht, say its designers.
Superyacht transforms into 'pleasure submarine' - CNN.com