China Making Manned Submersible to Dive to 10,000 Meters Depth


SCMP says in its report yesterday titled “Key work finished on Chinese submersible to carry humans to greater depths” that previously China built two manned submersibles that have dived to 4,500 meters and 7,000 meters below sea level and now it is building a new one to dive to 10,000 meters according to CCTV report yesterday.

The manned sphere is being made of titanium to withstand the great pressure at such a depth. Officials of the manufacturer Baoji Titanium Industry said that it was the first time titanium had been used to make a personnel sphere for a submersible.

Wang Dingchun, the company’s deputy general manager, told the broadcaster that the metal was more flexible and the company is able to make titanium alloy that is “almost corrosion-free”.

The report says, “The sphere is being made in two halves that will be welded together with just one seam to make it more solid. Traditionally there are more pieces involved.” Test dive of the submersible will be conducted at the world’s deepest Mariana Trench in three years.

Such deep-sea submersible will facilitate China’s sea bottom mining and its technology will be very useful for China in developing the most advanced submarine.

Comment by Chan Kai Yee on SCMP’s report, full text of which can be found at http://www.scmp.com/news/china/society/article/2121803/key-work-finished-chinese-submersible-carry-humans-greater-depths.


China-made Manned Deep Sea Submersible Passed All Sea Tests


Submersible Shen Hai Yong Shi

Submersible Shen Hai Yong Shi

On October 3, manned deep sea test team of 112 members from 19 enterprises and institutes led by Deep Sea Science and Engineering Research Institute of Chinese Academy of Sciences returned to Sanya Port after completing all sea tests of China-made Submersible Shen Hai Yong Shi.

Submersible Shen Hai Yong Shi is an important research and development project under Plan No. 863 of China’s Twelfth Five-year Plan”. In developing Submersible Shen Hai Yong Shi the research and development teams of 94 domestic entities led by Research Institute No. 702 of CSIC kept on working hard to make breakthroughs for 8 years on the basis of the research, development and application of Submersible Jiaolong. Through their efforts, China has improved its capabilities of independent creation with respect to the core technology and key components and parts for manned deep sea submersion. It has thus lowered the operation and maintenance costs and vigorously boosted the construction of families of deep sea equipment with various set functions.

Source: mil.huanqiu.com “Successful manned deep submersion of China’s Submersible Shen Hai Yong Shi” (summary by Chan Kai Yee based on the report in Chinese)


China Developing Deep Seabed Mining


The Jiaolong submersible able to go 7 km deep on display in Hong Kong. Photo: SCMP Pictures

The Jiaolong submersible able to go 7 km deep on display in Hong Kong. Photo: SCMP Pictures

Tao Chunhui, from the State Oceanic Administration, says China has made huge progress in deep-sea technology. Photo: Dickson Lee

Tao Chunhui, from the State Oceanic Administration, says China has made huge progress in deep-sea technology. Photo: Dickson Lee

SCMP says in its report “China’s deep-sea mission to mine the wealth beneath the ocean floor” on October 10, China is stepping up its activities in exploration of minerals deep at the bottom of Indian and Pacific oceans.

It says that according to Tao Chunhui, one of the country’s leading oceanographers and a researcher at the State Oceanic Administration, there are vast sulphide deposits on 3,000 meter deep seabed containing copper, zinc and precious metals gold and silver. China is conducting exploration to know where the minerals are while developing the techniques to mine the minerals.

China has developed its manned Jiaolong submersible able to go to the depth of 7,000 meters and is now developing an 11,000-meter submersible to challenge the depth of of the Mariana Trench near Guam.

SCMP quotes Tao as saying,“China has made huge progress in deep-sea technology. We went from importing and copying to making our own innovations.”

Source: SCMP “China’s deep-sea mission to mine the wealth beneath the ocean floor” (summary by Chan Kai Yee, full text can be viewed at http://www.scmp.com/news/china/policies-politics/article/2025456/chinas-deep-sea-mission-mine-wealth-beneath-ocean-floor