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 ...

“I thoroughly enjoyed it—I didn’t want it to end,” Barker says. “And when it was over, I said I would absolutely do it again.” For Barker, the best part was getting to experience the advanced ...

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 ...