We have heard of submarines that can travel in under water, we have seen many of such Submarines in the BOND Movies also….But the submarines were mainly used at that time to attack an enemy Nation by being in disguise.

Later on advances in technology has made inevitable changes in the concept of use of submarines. Now they are used to detect the minerals that exist deep under the sea which are almost more that 5000 feet below.

A Human being going so deep into the seas and oceans is way too risky so SUBMERSILE’s were designed to fulfill this task. Many of the countries including INDIA have put in their R&D into designing Submersile’s. CHINA being the top country which has got a lot of progress in this regard, they have started the research in 2002 and they could successfully complete the Model. They named it JIALONG.



China’s manned deep-diving submersible Jiaolong  left a port in Jiangyin, Jiangsu province on board its mother ship Xiangyanghong 9 yesterday for a 5,000 meter dive in the Pacific Ocean.

Only four other nations – the United States, France, Russia and Japan – have the technology for a manned submersible dive at greater than 3,500 meters below sea level.

A submersible is a smaller version of a submarine, and requires a mother ship while it is on the surface. It can also dive much deeper than a submarine.

Named after a mythical sea dragon, Jiaolong completed 17 dives in the South China Sea between May 31 and July 13 last year, reaching a maximum depth of 3,759 meters with three crew members on board.

This time, it will attempt a 5 kilometer-deep dive in the Pacific Ocean in the next 47 days, and it is expected to make four dives, said Jin Jiancai, secretary-general of China Ocean Mineral Resources R&D Association (COMRA).

The 8.2 meter, 22 ton submersible was designed to go to a depth of 7,000 meters, which could give China access to 99.8 percent of the ocean floor. Jiaolong is considered to be the world’s only deep-sea vessel that can theoretically reach those depths.

Jin noted that safety was the first priority in this mission.

“First of all, we should bear in mind that this is a scientific experiment. Although we have studied the environment as much as possible, there are still some unpredictable conditions.”

“Even if we could not reach the expected depth for some reason, we will achieve the goal of this experiment as long as all our crew members return safely to land,” said Jin.

Manufactured as part of the national high technology R&D plan in 2002, also known as the 863 Plan, more than half of Jiaolong’s parts and components were made in China.

Jin said part of the mission is to fulfill the contract between the International Seabed Authority (ISA) and COMRA, which includes taking photographs and video footage of the sea floor, and measuring submarine topography and geomorphy, in the 75,000 square kilometer area designated by the ISA.

“With permits from the ISA, China will be able to explore minerals and other resources for commercial purposes in this area once the technology matures,” added Jin.

The three crew members on Jiaolong are Tang Jialing, Fu Wentao and Ye Cong. Ye, Jiaolong’s pilot, has been responsible for 28 of the 37 dives that it has made so far, and he also helped with the design of the craft.

source:China Daily

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Mahesh (MGIT ECE 4th year)

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