U-Boat Worx has been producing submersibles for business and scientific concerns for over 15 years, and its new Super Sub is its best-performing model to date. The 17-foot vessel is powered by four thrusters making a peak 80 horsepower, pushing the Super Sub's 20,000-pound weight up to 8 knots, or a little over 9 MPH. That's faster than a dolphin can cruise, putting the Super Sub in good company. Dive time is eight hours on a full charge, with an aquadynamic design that allows for 30-degree climbs and depths of up to 1,000 feet. The Super Sub can carry one pilot and two passengers, with a massive acrylic hull for unobstructed views of the ocean.