Poseidon 180 Superyacht is pretty super, I guess

If you're gonna get a yacht, there's no point in skimping, You might as well blow as much money as possible and get the sweetest vessel in the port. If you have $50 million to spend, it doesn't get much sweeter than the Poseidon 180 Superyacht.

What do you get for your $50,000,000 (count them zeros!)? Well, only a boat built with the patented Air Cavity Hull, which offers reduced hydrodynamic drag for about 30% better fuel efficiency. You hear that? 30%! If that didn't sell you, the fancy hull will also help to reduce seasickness. If that doesn't sell you, nothing will. Get those credit cards ready.

Super Yacht Times, via Geekologie