Bathyscaphe Trieste
Trieste is a Swiss-designed, Italian-built deep-diving research bathyscaphe, which with its crew of two reached a record maximum depth of about , in the deepest known part of the Earth's oceans, the Challenger Deep, in the Mariana Trench near Guam in the Pacific. On 23 January 1960, Jacques Piccard (son of the boat's designer Auguste Piccard) and US Navy Lieutenant Don Walsh achieved the goal of Project Nekton.
Jiaolong (submersible)
Jiaolong ( flood dragon) is a Chinese manned deep-sea research submersible that can dive to a depth of over 7,000 m. It has the second-greatest depth range of any manned research vehicle in the world, the only manned expeditions to have gone deeper were the dives of the Trieste bathyscaphe (10,916m) in 1960, Archimède (9,560 m) in 1962, Deepsea Challenger (10,898m) in 2012 (with all three diving to Challenger Deep) and the Limiting Factor which dove 8,370 meters in December 2018 to the bottom of the Puerto Rico Trench.