World's fastest private 'underwater supercar' launched with 11.5 mph speed

Source: interestingengineering
Author: @IntEngineering
Published: 3/29/2026
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Read original articleDutch submersible manufacturer U-Boat Worx has launched the Super Sub, touted as the world’s fastest private mini-submarine, capable of speeds up to 10 knots (11.5 mph/18.5 kph). Designed as a luxury underwater “sports car,” the sub can carry one pilot and two passengers, reaching depths of up to 984 feet (300 meters), which covers the typical habitat range of most marine life. Measuring about 12 feet long and 6 feet wide, it features a 62 kWh battery allowing for around 8 hours of underwater exploration. The acrylic bubble cockpit offers nearly 360-degree panoramic views, enhancing the immersive experience for passengers.
The Super Sub’s advanced design emphasizes maneuverability and speed, with hydrofoils and thrusters enabling it to ascend and descend at angles up to 45 degrees and perform smooth, agile movements underwater. Its propulsion system includes four 25 kW and two 6 kW motors, supported by safety features such
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robotunderwater-vehiclebattery-technologyelectric-propulsionmaterials-engineeringenergy-storagemarine-robotics