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.
McCann Rescue Chamber
In 1939, the McCann Rescue Chamber made its debut when it was used to successfully rescue thirty-three survivors from "Squalus", At the time of "Squalus" accident, Lieutenant Commander Momsen was serving as head of the Experimental Diving Unit at the Washington Navy Yard. The submarine rescue ship USS "Falcon" (ASR-2), commanded by Lieutenant George A. Sharp, was on site within twenty-four hours. It lowered the Rescue Chamber — a revised version of a diving bell invented by Momsen — and, in four dives over the next 13 hours, recovered all 33 survivors in the first deep submarine rescue ever. McCann was in charge of Chamber operations, Momsen commanding the divers. Although there was no reason to believe anyone was alive in the aft part of the ship, a fifth dive was made to the aft torpedo room hatch on May 25. This run confirmed the flooding of the entire aft portion of the ship.