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Output of a computer model of underwater acoustic propagation in a simplified ocean environment. A seafloor map produced by multibeam sonar. Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and its boundaries.
Submarine signaling was made obsolescent and overtaken by advances during World War II. In 1946 the Submarine Signal Company was acquired by and merged with Raytheon , becoming Raytheon's Marine Division, after having become the national leader in underwater sound, sonar and other work with the Navy during the World Wars and branching into ...
Communication with submarines is a field within military communications that presents technical challenges and requires specialized technology. Because radio waves do not travel well through good electrical conductors like salt water, submerged submarines are cut off from radio communication with their command authorities at ordinary radio frequencies.
The understanding of the ocean acoustic environment made the system possible rather than development of new technology. SOSUS was a case of new understanding of the environment and then application of largely existing technology and even equipment to the problem.
The Mark 24 mine (also known as FIDO or Fido) is an air-dropped anti-submarine (ASW) acoustic torpedo developed by the United States during World War II; it was called a mine to conceal its capabilities. The torpedo entered service with the Allies in March 1943; the United States Navy (USN) used it until 1948. Approximately 4,000 were produced.
During World War II, he continued to develop sonar systems that could detect submarines, mines, and torpedoes. He published Fundamentals of Sonar in 1957 as chief research consultant at the US Navy Underwater Sound Laboratory. He held this position until 1959 when he became technical director, a position he held until mandatory retirement in 1963.
For the remainder of the war, most of Kühnhold's research at the NVK was in underwater acoustic techniques, working closely with the firm ELAC in Kiel. Founded in 1926, ELAC was the primary supplier of echo-sounding (sonar) equipment for the Kriegsmarine, with a staff that peaked near 5,000. When the war ended in May 1945, the NVK was closed ...
An acoustic torpedo is a torpedo that aims itself by listening for characteristic sounds of its target or by searching for it using sonar (acoustic homing). Acoustic torpedoes are usually designed for medium-range use, and often fired from a submarine .