Grab your beanie; the U-Boat Worx Nautilus is about to fulfill your Steve Zissou fantasies. The 123-foot superyacht gives guests a luxury submarine experience and is available to order now. It can travel 200 meters below the surface with an underwater cruising speed of four knots and can stay there for up to four days. Above the surface, the vessel can reach a speed of nine knots and offers a 635-square-foot upper deck with a freshwater pool, bar, and outdoor dining. The interior includes a 540 square foot dining room and lounge surrounded by circular portholes and accommodations for 10 with four staterooms and a primary suite, along with crew quarters for six members. Layouts are fully customizable by the client, and once ordered, the Nautilus will be delivered in 30 months.