China’s unmanned submarine the Haidou-1 has repeated the country’s deep sea diving record by visiting the Mariana Trench 35,784 feet under the Pacific Ocean.
The expedition team, made up of members of the Shenyang Institute of Automation and the Chinese Academy of Sciences, reportedly visited the Challenger Deep four times.
The Challenger Deep is the deepest known point in the Earth’s seabed with a depth of between 10,902 and 10,929 metres (35,768 and 35,856 feet).
It was visited briefly for the first time in 2012 when film director James Cameron made a solo descent in the DSV Deepsea Challenger. The filmmaker’s descent lasted 2 hours and 36 minutes, and the recorded depth was 10,908 metres (35,787 feet).
The Challenger Deep is located in the Western Pacific Ocean, at the southern end of the Mariana Trench near the Mariana Islands.
The huge depression is named after the British Royal Navy survey ship HMS Challenger, whose expedition between 1873 and 1876 made the first recordings of its depth.
The Chinese team left for the expedition on 23rd April and returned to the Chinese province of Liaoning on 8th June, according to local media.
During the deep-sea dive to the Mariana Trench, scientists reportedly experimented with high-precision depth detection, machine hand operation, acoustic detection and positioning, and high-definition video transmission.
The Haidou-1 also collected samples from the deepest known point in the Earth’s seabed and took HD images of the mysterious underwater region.
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