Deep-submergence vehicles

thumb|Bathyscaphe Trieste (bathyscaphe)|Trieste before its only dive into the [[Mariana Trench]] thumb|The Trieste in 1958

submersible

experimental nuclear submarine

Iranian submarine class

deep-submergence vehicle

chinese deep diving submersible

Nautile is a crewed submersible owned by Ifremer, the French Research Institute for Exploitation of the Sea. Commissioned in 1984, the submersible can be operated at depths of up to .

The FNRS-3 or FNRS III is a bathyscaphe of the French Navy. It is currently preserved at Toulon. She set world depth records, competing against a more refined version of her design, the Trieste. The French Navy replaced her with the bathyscaphe Archimède, in the 1960s.

The bathyscaphe Archimède is a deep diving research submersible of the French Navy. It used of hexane as the gasoline buoyancy of its float. It was designed by Pierre Willm and Georges Houot. In 1964, Archimède descended into "what was then thought to be the deepest part of the Puerto Rico Trench", which the NY Times reported as .

thumb|The FNRS-3 at the Tour Royale, Toulon|Tour Royale in Toulon.

French deep-water remotely operated vehicle

Japanese manned research submersible that can dive up to a depth of 6,500 metres

crewed full-ocean-depth rated submersible

Class of Iranian submarine

crewed submersible

Aluminaut (built in 1964) was the world's first aluminum submarine. An experimental vessel, the 80-ton, crewed deep-ocean research submersible was built by Reynolds Metals Company, which was seeking to promote the utility of aluminum. Aluminaut was based in Miami, Florida, and was operated from 1964 to 1970 by Reynolds Submarine Services, doing contract work for the U.S. Navy and other organizations, including marine biologist Jacques Cousteau.

deep-diving manned submarine that is self-propelled

class of two deep submergence vehicles, built and operated by the Russian Navy