If you have enough scratch for a Super Yacht then of course you need your own personal submarine. The Super Yacht Sub 3 by U-Boat Worx ($2.35M) was built just for you. The Sub 3 is the most compact 3-person submersible ever built. It features luxurious leather seating in a fully air-conditioned environment. Your new sub has a maximum operating depth of 150-300 meters, depending on the model you get and a pressurized hull that has a perfect seating arrangement for optimized viewing for all passengers. So take your seafaring ways to an entirely new level with your very own Super Yacht Sub 3.