Also found in: Dictionary, Thesaurus, Wikipedia.


a strong steel deep-sea diving sphere, lowered by cable



a strong, usually steel, sphere-shaped chamber with equipment for underwater observation; it is lowered on a cable from a surface vessel. There is equipment in the bathysphere for air regeneration, measurement devices, and a telephone; there are also several observation windows.

The first descent in a bathysphere was made by the Italian Balzamello in the Mediterranean in 1892, to a depth of 165 m. In 1911 the American engineer H. Hartman descended in a bathysphere in the Mediterranean to a depth of 458 m. In 1934 the Americans W. Beebe and O. Barton descended in the bathysphere Age of Progress to a depth of 923 m near Bermuda, and in 1948, after a series of improvements, O. Barton descended in a bathysphere near California to a depth of 1,360 m. Since the 1950’s hydrostats have been used instead of bathyspheres for oceanographic exploration (and in some cases, for work connected with the raising of sunken vessels).


Diomidov, M. N., and A. N. Dmitriev. Pokorenie glubin, 2nd ed. Leningrad, 1964.
Diomidov, M. N., and A. N. Dmitriev. Podvodnye apparaty. Leningrad, 1966.



(naval architecture)
A spherical chamber in which persons are lowered for observation and study of ocean depths.
References in periodicals archive ?
After a bathysphere ride you arrive in Rapture, a utopian underwater city where the world's greatest minds have fled.
This original bathysphere has recently been restored and will soon be on display at the New York Aquarium.
Bermuda: Employees will refill sand, clean tanks and water reservoirs, and paint the bathysphere at the Bermuda Aquarium Museum and Zoo.
Best known for being the first person to dive to 2,000 feet under the ocean in an iron bathysphere lowered from a ship, he also wrote two dozen best-selling books on his wildlife studies in Trinidad, the Galapagos Islands, British Guiana, the Himalayas, and many other places.
MediaBin software will be used to manage digital images on the Team Dennis Conner web site, which is being hosted by Bathysphere DMS.
As a boy, Strahl read the works of bathysphere inventor William Beebe, who served as the zoo's first curator of birds and who studied the hoatzin in South America during the early years of the century.