2006-09-29 08:05:07 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
The maximum surveyed depth is 10,923 metres (35,838 feet). On 23 January 1960, the Swiss-built Bathyscaphe Trieste, acquired by the US Navy, descended to the ocean floor in the trench manned by its inventor Jacques Piccard and USN Lieutenant Don Walsh.
The Trieste class bathyscaphes were replaced by the Alvin class submersibles, best exemplified by DSV Alvin itself. Though the newer design could not dive as deep (a maximum of 20,000 feet for DSV Sea Cliff), they were generally more capable and more durable.
2006-09-29 08:45:58 · answer #1 · answered by campbelp2002 7 · 1⤊ 0⤋
Man has explored the deepest ocean canyon on earth when the bathyscaphe Trieste descended to the challenger deep in the Mariannas trench over 37,000' about 1960.
2006-09-29 15:23:24 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The Marianas Trench is one of two deep water trenches about 5 mles deep. I think we've been there once. But most of the ocean is much shallower, maybe a mile or so.
2006-09-29 15:09:40 · answer #3 · answered by Anonymous · 0⤊ 0⤋
7 miles. The Deep Sea Submersible Craft, "Alvin", visited there first.
2006-09-29 15:23:54 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Its average depth is 4,300 metres (14,000 ft) down; and its deapest point is alsoThe lowest point on earth—the Mariana Trench—lies 10,911 metres (35,797 ft) below sea level. people have goto the bottom of it, took about seven hours, and it is the deepest people have ever travelled downwards
2006-09-29 18:39:54 · answer #5 · answered by prof. Jack 3 · 0⤊ 0⤋
some have gone down much deeper than what the public is aware of.
2006-09-29 15:33:05 · answer #6 · answered by ? 5 · 1⤊ 0⤋