It is a sad thought that the whole history has had to deal with the submarine warfare, barring some isolated experiments. Today, submarines are used for many other purposes, for example. For research underwater carbonate new species.
The biggest incentives man to learn to work in the depths of the sea, were located in two military disasters of the United States of America, one in 1963 and the other in 1966. The first disaster was the fatal collision of the submarine Thresher with the bottom of the Atlantic Ocean at a depth where no rescue boats could come. The second disaster was the loss of a hydrogen bomb in the sea off the coast of Palomares, Spain. These two events brought a revolution in the development of the deep-sea research.
For at least 2,500 years have been long there are divers were equipped with breathing apparatus. But only in the 20th century, they have ventured depths of any significance. At the largest depths, the pressure of the water is not less than 1000 kg per square cm. The sphere is the only possible form that seems to be able to withstand such a pressure. Those who were looking for opportunities to deep diving, also called for a spherical device before.
The first diving apparatus was developed by Otis Barton in 1930. In 1933 he went, accompanied by William Beebe, therein down to a shallow depth. Later deep investigations started in 1948 with Professor Auguste Piccards. A bathyscaphe usually consists of a very strong ball for the crew and instruments. That bulb is attached to a sheath with a larger floating capacity, which is filled with a substantially incompressible fluid of a lower density than sea water, such as liquefied gas. Suspension from the surface has been tried, but at depths down to 100.00 meters proved to be totally impracticable. There were adjustable ballast and vertically propellers are used.
Man has learned a lot from how humans can live in depth, how to navigate in depth, how to perform work on the seabed and how he can extract valuable resources from the sea. There is already a huge variety of diving apparatus: rescue vessels, many kinds of research platforms, work platforms, subsea work boats and on the seabed mounted devices with remote control (even bulldozers and loopkramen.De most appliances that are designed for depths greater than 500 meters have little resemblance more than submarines. Because they are built according to the bathyscaafprincipe.
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