Mariana Trench

The Mariana Trench

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The Mariana Trench (in the Pacific Ocean) supposedly was formed by “Ocean to ocean subduction” and is the deepest place in the sea and the earth, and at seven miles deep, only one attempt to reach the bottom has been successful. The names of the oceanographers who made it are: “Don Welsh” and “Jacques Piccard,” they reached the bottom of the Mariana Trench in a mini-sub called the Trieste and were members of the U.S. Navy.

The Navy purchased the “bathyscaphe” (or “deep subs” are the deepest diving subs) from Italy for $ 250,000 ($1,819,517 in 2010 value) in the 1960s for the purpose of scientific research. The sub was almost completely a gas tank, being able to carry 70 tons of gas, and the only occupied part of the sub was the dome on the bottom, which was plated with bronze.

The Trench is divided in several sections and the deepest of them is the Challenger Deep named by Piccard while on a fishing boat “Converted into a laboratory.” Their goal was to reach the bottom of the Challenger Deep. On 26 August 1953 they dived, and they went down using thrusters and at 9,840 feet they began to slow down as a impact would be fatal. The sudden pressure of stopping cracked one of the windows, but it was an outer window and was of no danger.  To come back up they released 2.2 tons of “iron-pellet ballast.” They reached the surface and they set the record for the deepest dive in history, the record has never been broken. One robot came within two feet of the record, but had to surface. Jacques died November 1, 2008 and Don Walsh is still alive at the age of 80

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“Just remember, you can do anything you set your mind to, but it takes action, perseverance, and facing your fears.” ~ Gillian Anderson

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The Trench is located approximately 585.96 miles from Tokyo Japan
Visit the image gallery for more images.
You can see a video of the Trieste here.

Source[s]:
http://marianatrench.com/
http://www.pbs.org/wnet/savageseas/deep-side-journey.html
http://thinkexist.com/quotation/just_remember-you_can_do_anything_you_set_your/207562.html
Odious Oceans, by: Anita Ganeri