The Super Sub can achieve a top speed of 10 knots (11.5 mph). This is considerably faster than the average personal submersible, which typically operates at speeds around 3 knots. For comparison, this ...

This is the U-Boat Worx Nemo 2, a submarine that's like a supercar of the sea! The Nemo 2 can take two people below water at ...

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 ...

There are a handful of ultra-high-net-worth pursuits that sound tempting, but don’t really make sense. They’re typically wildly expensive and operationally inconvenient. And always difficult to ...