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A bathyscape, '''bathyscaphe''', or '''bathyscaph''' is a self-propelled deep-sea Diving Submersible , consisting of a crew cabin similar to a Bathysphere suspended below a float filled with a buoyant liquid such as Gasoline . It floods tanks to descend but unlike a Submarine they cannot be refilled underwater. To ascend solid ballast, e.g. containers of lead shot are released and allowed to sink to the ocean floor. Auguste Piccard , inventor of the first bathyscaphe, composed the name ''bathyscaphe'' using the Greek words "bathos" (depth) and "skaphos" (ship). The first bathyscape was dubbed ''FNRS-2'', and built in Belgium between 1945-48 by Piccard. Propulsion is provided by battery-driven electric Motor s. Piccard's second bathyscaphe was '' ''Trieste'' set a world record by diving to a depth of 35,810 feet (10 915 meters) at the bottom of the Challenger Deep , the deepest point in the Mariana Trench and believed to be the deepest point in the world's oceans. See also a Timeline Of Underwater Technology . SEE ALSO EXTERNAL LINKS
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