Bathyscaphe Trieste
On 23 January 1960, she reached the ocean floor in the Challenger Deep (the deepest southern part of the Mariana Trench), carrying Jacques Piccard and Don Walsh. This was the first time a vessel, manned or unmanned, had reached the deepest known point of the Earth's oceans. The onboard systems indicated a depth of , although this was revised later to ; fairly recently, more accurate measurements have found Challenger Deep to be between and deep.
Emory Kristof
Kristof has participated in multiple undersea expeditions with Canadian explorers Joseph MacInnis and Phil Nuytten, including the exploration of the "Breadalbane", the world's northernmost known shipwreck, and the 1995 expedition to recover the bell from the wreck of the SS "Edmund Fitzgerald". Nuytten also accompanied MacInnis and Russian explorer Anatoly Sagalevich on a descent 16,400 feet into King's Trough in the eastern North Atlantic aboard the submersible "Mir 1", and on the expedition which made the IMAX film "Titanica".