Lavish submarines for the niche sector known as "luxury adventure," as well as luxurious cruise ships, have gotten their share of criticism over the years from green activists and everyone who ...

If I had $2,000,010, I would sink $2M in this Personal Submarine, a spacecraft-looking two-person underwater vessel that can go down to 1,000 feet. Then I will use the $10 to buy a fake Ringo Starr ...

The luxury-submarine business is sometimes hard to fathom. "If you can find my submarine, it's yours," said Russian oil billionaire Roman Abramovich. And that's all the reclusive owner of the Chelsea ...