When it comes to purchasing your own private submarine, there is quite a choice. U-Boat Worx has just unveiled their latest contribution; the Super Yacht Sub 3.
As you would expect it comes complete with luxury leather seating and an air-conditioned environment.
U-Boat Worx state the six powerful thrusters can handle strong currents, and you can get quite decent bottom times. The 42kWh lithium-ion batteries have a burn time of 12 hours. Prices start from €1,750,000.