Trieste reaches the bottom of the Challenger Deep
Jacques Piccard and Don Walsh descend in the bathyscaphe Trieste and reach the floor of the Challenger Deep. Onboard instruments initially indicate about 11,521 m; the figure is later recalculated to about 10,916 m. No human returns to the bottom for 52 years.
Historical — it happened, and the record is settled.
Subjects
- Bathyscaphe Trieste · vehicle · United States (US Navy, from 1958) · not located
- Jacques Piccard · person · Switzerland · not located
- Don Walsh · person · United States · not located
- Challenger Deep · site · Western Pacific Ocean - southern Mariana Trench
- Hadal Zone · ocean_zone · Global ocean - subduction trench systems · not located
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
The Trieste's Deepest Dive
On 23 January 1960 Jacques Piccard and Lt. Don Walsh descended in the bathyscaphe Trieste to the floor of the Challenger Deep. Onboard instruments initially indicated about 11,521 m; the figure was subsequently recalculated to about 10,916 m.
U.S. Naval Institute, Naval History Magazine, vol. 34 no. 1 · 2020-02 · Partly verified
https://www.usni.org/magazines/naval-history-magazine/2020/february/triestes-deepest-dive
Recorded on Bathyscaphe Trieste
- HMS Challenger sounds the deep that will bear her name
- Trieste reaches the bottom of the Challenger Deep
- JAMSTEC's Kaiko reaches the Challenger Deep floor
- Multibeam survey reports a 10,984 m maximum sounding
- First solo crewed dive to the Challenger Deep
- So, How Deep Is the Mariana Trench? asks the question in print
- Five Deeps Expedition dives the Challenger Deep four times
- Submersible pressure transects across the Challenger Deep floor
- Revised depth of the Challenger Deep published
Related
Related because they share a subject in the Atlas — never because the text looks similar.
- Revised depth of the Challenger Deep published · 2021
- Submersible pressure transects across the Challenger Deep floor · 2020-06
- Five Deeps Expedition dives the Challenger Deep four times · 2019-04-28/2019-05-07
- So, How Deep Is the Mariana Trench? asks the question in print · 2014
- First solo crewed dive to the Challenger Deep · 2012
- Multibeam survey reports a 10,984 m maximum sounding · 2010
- JAMSTEC's Kaiko reaches the Challenger Deep floor · 1995
- HMS Challenger sounds the deep that will bear her name · 1875