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The first fishfinder marketed to consumers in America for recreational fishing was the Lowrance Fish Lo-K-Tor (also nicknamed "The Little Green Box"), which was invented in 1957 and entered the market in 1959. It retailed for $150 at the time, equivalent to $1,610 in 2024.
Lowrance was founded in Tulsa, Oklahoma in 1957. In 2006, Simrad Yachting and Lowrance merged in a deal valued at $215 million, creating a new company named Navico. In 2006, Lowrance was purchased by Simrad Yachting for $215 million. [8] This merger went on to create Navico, now the largest leisure marine electronics manufacturer in the world. [9]
Thales has sold one CAPTAS-4 low-frequency active sonar to the U.S. Navy to be towed behind the LCS, with a potential order of 25 units. [65] The USN tested combination of this unit, derived from the Sonar 2087 on British Type 23 frigates , with the TB-37 Multi-Function Towed Array (MFTA) found on U.S. warships. [ 66 ]
His work is documented in US Patent 4,197,591 [4] which was first disclosed in Aug 1958, but remained classified by the US Navy until it was finally issued in 1980. Experimental side-scan sonar systems were made during the 1950s in laboratories including Scripps Institution of Oceanography and Hudson Laboratories and by Dr. Harold Edgerton at MIT.
Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. [4] Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, [5] and sodar (an upward-looking in-air sonar
This category is for articles about military sonar equipment developed by the United States. Pages in category "Military sonar equipment of the United States" The following 15 pages are in this category, out of 15 total.
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.
Sonobuoy being loaded onto a USN P-3C Orion aircraft Hand deployment of a sonobuoy in the Arctic Ocean from the aft deck of the R/V Sikuliaq. A sonobuoy (a portmanteau of sonar and buoy) is a small expendable sonar buoy dropped from aircraft or ships for anti-submarine warfare or underwater acoustic research.
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