Bringing you another episode of “the future is here,” an Italian designer has debuted plans for a $1 billion superyacht that is not only a floating marvel but also has its own detachable airship.

arrived in San Francisco in September after making stops in Alaska and Seattle. WSJ took an exclusive tour of Andrey Melnichenko's 394-foot mega-yacht in 2010. Photo: AP ...

“Le Grand Bleu” was built in the Vulkan Bremen shipyards, designed by world famous mega-yachts Kusch Yachts and originally belonged to Roman Abramovich the Russian tycoon who among other ...