Deepest Wreck Dive - USS "Johnston"

[GordMay]

‘Deepest wreck dive’ reaches US WWII ship off Philippines
A crewed submersible filmed, photographed, and surveyed the wreckage of the USS “Johnston”, lying nearly 6,500 metres (21,325 feet) deep, off Samar Island, during two eight-hour dives, completed late last month, Texas-based undersea technology company Caladan Oceanic said.
The 115-metre-long (377-foot-long) destroyer was sunk on October 25, 1944, during the Battle of Leyte Gulf, as US forces fought to liberate the Philippines [then a US colony] from Japanese occupation. Only 141, of the ship’s 327 crew survived, according to US Navy records.
More ➥ https://caladanoceanic.com/expeditio.../pressrelease/
and:
History ➥ https://caladanoceanic.com/expeditions/samar/
Pics ➥ https://caladanoceanic.com/expeditions/samar/gallery/
Video ➥ https://caladanoceanic.com/expeditions/samar/videos/

[ggray]

Greatest stand ever by the USN.

[GordMay]

In late February 1968, the Soviet diesel-electric submarine “K-129", carrying three ballistic nuclear missiles, was on a routine combat patrol, in a remote area of the North Pacific, when it vanished without explanation.
After radio communication suddenly ceased, a flotilla of craft steamed out of Soviet ports, in a mass search-and-rescue mission.
After two months, the Soviet Union abandoned its search for “K-129", and the nuclear weapons it carried; but the United States pinpointed the “K-129", about 1,500 miles northwest of Hawaii, and 16,500 feet below the surface.
Drawing on acoustic signals, from a network of underwater hydrophones, installed in secret during the 1950s to passively listen to submarine traffic, the Navy identified the likely death throes of “K-129". From that, they triangulated its approximate position, and dispatched the USS “Halibut” to pinpoint the wreck.
According to the declassified C.I.A. history of the project, “No country in the world had succeeded in raising an object of this size and weight from such a depth.” The deepest salvage of any submarine in history, was around 90 metres, and the K-129 job would be more complex, by orders of magnitude.
Enter, the CIA, Howard Hughes, the “Hughes Glomar Explorer”, and "Project Azorian”.


More:

➥ https://nsarchive2.gwu.edu/nukevault/ebb305/index.htm

➥ https://nsarchive2.gwu.edu/nukevault/ebb305/doc01.pdf

➥ https://nsarchive2.gwu.edu/nukevault...index.htm#docs

[GordMay]

How Low Can You Go? The World's Deepest Dives in History

The ocean keeps the Earth alive. Covering around 70 percent of our planet's surface, the ocean regulates temperature, drives weather, and supports all living organisms in some way. For centuries, it has also provided humans with food, transport, commerce, leisure, and inspiration.

Yet, humans have only observed, explored, and mapped approximately 20 percent of it — some say this number could even be as low as five percent. The rest is left to our imagination.

Lack of technology, high cost, and difficulty have hindered deep underwater exploration, but that's not to say humans haven't tried for, and even achieved, inspiring feats of ocean exploration. From inventing new types of submersibles to new ways of kicking with their own two legs, innovators, explorers, and sportspeople have reached unthinkable depths through a number of impressive methods.

More ➥ https://interestingengineering.com/h...ves-in-history

[GordMay]

In September 2019, Victor Vescovo, and the crew of his ship, the DSSV Pressure Drop, completed a mission to descend to the deepest points in all five of Earth's oceans, aboard a small submersible. Vescovo's team also used bathymetric instruments, aboard the Pressure Drop, to map these bottom-of-the-world hotspots while the ship was in the neighborhood. The team's expeditions mapped an area equivalent to the size of France, in roughly 10 months, more than half of which had never been seen before.

THE FIVE DEEPS: EXPEDITION OVERVIEW
The Five Deeps Expedition was the first to reach the deepest point in each of the Earth’s five oceans: the Puerto Rico Trench in the Atlantic, South Sandwich Trench in the Southern Ocean, Java Trench in the Indian Ocean, Challenger Deep in the Pacific and Molloy Deep in the Arctic.
More ➥ https://fivedeeps.com/home/expedition/

DSSV 'Pressure Drop' ➥ https://fivedeeps.com/home/technology/vessel/

News report about ➥ https://www.livescience.com/explorer...tic-ocean.html

See also:
Filipino Scientist Goes 10,000 Meters Down the Ocean and Finds a Teddy Bear
➥ https://www.vice.com/en/article/m7eb...ippines-trench

[laird]

I've stood on the bottom of the North sea at 659 ft ,does that count ? ��