Sea Technology

DEC 2018

The industry's recognized authority for design, engineering and application of equipment and services in the global ocean community

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Page 36 of 52

36 ST | December 2018 A Brief History of Sonar One of JW Fishers Mfg.'s first so- nar-like devices was invented by na- val architect Lewis Nixon in 1906. His vision was to design a system that would allow naval captains to detect underwater icebergs and other threats. This detection system became more important after the sinking of the Titanic in 1912. Then, after WWI broke out in 1914, there was an immediate need for subma- rine detection. The first active sonar was developed in 1915 through a collaboration between Russian en- gineers and French physicists. Sonar systems were first devel- oped for military applications and have since become very helpful in underwater exploration. Scientists use sonar to map the seafloor, scan reefs and measure water depths. Police and dive rescue teams use sonar to find missing persons and evidence. Treasure hunters use it to locate shipwrecks and other valu- able objects. Among the users of JW Fisher's sonar tech today are the Ful- ton County Sheriff's Office and W.J. Castle of The Castle Group, com- prising marine structural engineers and contractors. AUV Prototype Progress Autonomous Robotics Ltd. (ARL) has reported successful au- tonomous sea trials of a prototype "flying node" AUV at a location offshore Plymouth Harbour. The trial demonstrated the AUV au- tonomous navigation and seabed landing and take-off operation. The AUV demonstrated exceptionally stable flight and accurate naviga- tion during the trial. This is a major milestone in the development of the flying node concept. ARL is a U.K. marine robotics company that aims to offer a swarm of novel AUVs carrying indus- try-proven sensor packages that are autonomously deployed, positioned on the seabed and recovered, creat- ing a new drone market. Grant to Help Fund Innovative Propulsion System Whiskerstay Ltd. is planning a new development in electric ma- rine vessels, with the help of a Rap- id Innovation Grant from Marine-i. There is much interest in the ma- rine sector for electric and hybrid propulsion systems that can deliv- er good performance while being quiet and environmentally friendly. However, to date, the pace of de- velopment has been relatively slow. Whiskerstay has devised a new propulsion solution for commer- cial and leisure marine vehicles. The Rapid Innovation Grant will be used to purchase the computer equipment needed to carry out vital system design and simulation work. CSIRO Training for Falcon Australia's Commonwealth Sci- entific and Industrial Research Or- ganisation (CSIRO) has begun train- ing students to operate its new Saab marine electronics 1953 County Street, East Taunton MA 02718 USA (800)822-4744 or (508)822-7330 / Email: / Channel Buoy Remove the water with the help of a JW Fishers Side Scan So nar! - Low cost - 500' depth capability - Single or dual frequency towfish - Up to 2,000' (600m) range per side of the towfish - Displays sonar images on a laptop or tablet - Simple to operate - "Turn key" system - Store files (XTF format)

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