More recent measurements indicate the bottom of the Challenger Deep to be roughly 11,000 meters below sea level. The ship's instruments initially registered the vessel's depth to be 11,521 meters, but this was later recalculated to 10,916 meters. The Trieste carried hydronauts Don Walsh and Jacques Piccard approximately 11,000 meters underwater - that is, about 11 kilometers (or 7 miles) into the deepest part of the Pacific Ocean. It was named after the city in which it was built, on the border between Italy and Yugoslavia. Trieste (pronounced TREE-est-a) was the name given to the bathyscaphe that would make history by traveling into the Challenger Deep on January 23, 1960. Gasoline is more buoyant than water and is highly resistant to compression, which makes it well-suited for the high pressure of deep-sea dives. This observation chamber is attached to the bottom of a tank filled with gasoline. The Ship: The Bathyscaphe TriesteĪ bathyscaphe (pronounced BA-thi-skaf meaning: "deep ship") is a submersible vessel with a spherical room for research and observation. Trieste was the first vehicle to explore the trench with a crew of two people. It was discovered to be 10,924 meters deep in 1951 by researchers aboard the British survey ship Challenger. Where is the Mariana Trench? The Mariana Trench is located in the western Pacific Ocean.
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