SONAR (SOund Navigation And Ranging) — or sonar — (in British use ASDIC until 1948) is a technique that uses sound propagation under water to navigate or to detect other vessels. There are two kinds of sonar — active and passive. Sonar is a subcategory of acoustic location.
In 1906, Lewis Nixon invented the very first passive sonar-type listening device, as a way of detecting icebergs *. During World War I, with the need to detect submarines, interest in sonar increased. The French physicist Paul Langevin, working with a Russian emigré electrical engineer, Constantin Chilowski, invented the first active sonar-type device for detecting submarines in 1915. Although piezoelectric transducers later superseded the electrostatic transducers they used, their work influenced the future of sonar designs. In 1916, under the British Board of Inventions and Research, Canadian physicist Robert Boyle took on the project, which subsequently passed to the Anti- (or Allied) Submarine Detection Investigation Committee, producing a prototype for testing in mid-1917, hence the British acronym ASDIC.
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Development - Subsea surveys and solutions for real-time process control and visualisation down to 4000 metres. We also provide transducer products. We are based in the UK and operate globally.
Meta Description: [ SRD : Advanced Acoustic Systems for the offshore industry. ]
S Marine Ltd - Design, development and supply of underwater acoustic sensors, data networks and electro-mechanical based technologies, systems and through-life support to the defence and commercial offshore markets.
Meta Description: [ J & S Marine is a leading, independent, UK -based company with a long pedigree engaged in the design, development, manufacture and support of complex systems and equipment associated with the naval defence and commercial offshore oil and gas markets. ]
Watson Electronics Ltd - Manufacture and supply a wide range of shakers for vibration testing, sonar systems, underwater transducers and power amplifiers.
Meta Description: [ World leaders in Vibration Test Equipment and Underwater Acoustic Systems, Gearing & Watson vibration test equipment and underwater acoustic systems can be found operating in more than 30 countries around the world. ]
Advansys Solutions Ltd - Design and develop software for sonar used in navel combat systems.
Meta Description: [ Advansys Solutions, High Level Strategic Studies in Sonar. Aerospace and Defense, Systems Engineering, Emergency Services. ]
AquaCoustic Remote Technologies Inc - Providing remote-sensing services for your underwater needs, using SONAR systems and proprietary software programs.
Meta Description: [ Underwater remote-sensing and inspection services, using SONAR systems and proprietary software. ]
Benthos Inc - Designs and manufactures oceanographic and robotic systems for research, exploration and defense, and through datasonics transducers.
Meta Description: [ Teledyne Benthos - Undersea systems and equipment: Survey/Mapping, Locator, Flotation, Hydrophone and Positioning products. ]
International Transducer Corporation - Manufacturer of acoustic transducers for ship and submarine sonar, oceanographic survey, seismic exploration, marine life research, medical devices and industrial proximity sensing.
Klaxon Signals Ltd. - Manufacturer the Vitavox range of naval and underwater loudspeakers and microphones.
Meta Description: [ Klaxon manufacturers electronic sounders, fire alarms, sirens, beacons, bells, buzzers and hooters for Fire, Industrial and Security applications. Klaxon also offers directional sounder evacuation solutions. ]
Klein Associates - Manufacturer of side scan sonar systems, navigation and intrusion detection.
L-3 Communications ELAC Nautik GmbH - Manufacture echosounders and sonars, underwater communication systems, multibeam systems, transducers and hydrophones.
Meta Description: [ ELAC Nautik GmbH is a leading company in the field of sonar technology. Company's activities cover research & development, production, sales & marketing as well as service of echosounders and sonar systems and components and other related products for navigation., defense applications and survey. ]
LinkQuest Inc. - Designs and manufactures 9600 baud, underwater acoustic modems and precision marine geodetic systems.
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Lockheed Martin -Syracuse - Prime contractor for many sonar systems.
Meta Description: [ MS2 provides surface, air and undersea applications for U.S. and allied forces. ]
Lowrance Electronics, Inc. - Designer and manufacturer of sonar, gps, mapping and aviation instruments. Includes a sonar tutorial and a dealer locator .
Meta Description: [ Lowrance Official Website - The leading manufacturer of recreational marine electronics and GPS electronics for consumer sport fishing, boating, aviation, automotive and outdoors recreation markets. ]
Lubell Labs - Manufacture underwater speakers for the scientist, synchronized swimmer, lap swimmer, and scuba diver.
Meta Description: [ Lubell Labs underwater speaker company home page, Lubell Labs offers underwater speakers, underwater loudspeakers, underwater acoustic transducers, diver recall systems, synchronized swimming sound systems, amplifiers, analog and digital recorders, wired and wireless microphones, sound reproducti... ]
Marine Acoustics Limited - Supplies a wide range of sonar products and related services to both the defence and commercial customer. Technical papers and career opportunities.
Meta Description: [ Chelsea Technologies Group Ltd is a leader in the design and manufacture of a wide range of oceanographic sensors (fluorimeters, transducers, CTD, Bioluminescence), sonar systems, acoustic transducers, towed vehicles systems and OEM biomedical instrumentation. Applications include environmental, ... ]
Marschall Acoustics Group - Design and manufacture acoustic and nonacoustic instrumentation for underwater and subsurface geophysical imaging applications for the industrial, government, and defence sectors.
Meta Description: [ The Marschall Acoustics Group supplies geophysical instrumentation, seismic equipment, towed hydrophone arrays, and custom audio electronics. ]
Naval Technology.com - Links to products and service companies providing a range of sonar and acoustic maritime and undersea equipment.
Meta Description: [ List of companies providing Sonar Systems and Equipment equipment and services to the The Website for Defence Industries - Navy. ]
Neptune Sonar Limited, - Manufacture, calibrate and supply underwater sonar acoustic transducers for commercial and military applications.
Novaray Underwater ROV - Underwater ROV (Remotely Operated Vehicle) Operates in high currents - maritime search and rescue, maritime port and ship security, underwater treasure salvage. All in one underwater rov
Ocean Engineering Enterprises - Manufactures underwater loudspeakers, hydrophones, diver recall systems, diver signaling devices and synchronized swimming sound systems .
Meta Description: [ THE source for underwater loudspeakers, underwater speakers, sychronized swimming sound systems, acoustic diver recall systems, hydrophones and U.S. Navy approved diver signaling devices! ]
Ocean News and Technology Buyer's Guide - Firms working in the oceans and seas.
Meta Description: [ ADD LISTING / UPDATE LISTING FREE - OCEAN NEWS and TECHNOLOGY BUYER'S GUIDE ]
SeaBeam Instruments - Manufactures multibeam swath ocean survey sonars and related services used to map the ocean floor. Includes a listing of agents and trade show activities.
Sippican - Manufactures expendable oceanographic and meteorologic instrumentation and associated data acquisition systems; communication and navigation antenna systems for submarines and aircraft and autonomous underwater vehicles for anti-submarine warfare .
Meta Description: [ Sippican is a privately-held defense electronics contractor located in Marion, Massachusetts. The company is ISO-9001 certified and an EEO / AA employer.
Products include oceanographic and meteorological instrumentation, submarine communication systesms, countermeasure systems, underwater vehic... ]
Sonalysts, Inc. - Provides analysis of submarine sonar systems, and a wide variety of airborne, surface, subsurface and land-based navy systems.
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Sonar performance prediction model 'ALMOST' - Information about 'ALMOST', a sophisticated underwater acoustic model for propagation and range prediction, which is able to assess detection performance for fully specified passive and active sonars.
Sonatech - Underwater acoustic systems development organization. Includes underwater sonar, navigation and tracking systems. A Channel Technologies company.
Meta Description: [ Sonatech designs and manufactures underwater acoustic products including side scan, forward looking, obstacle avoidance, and homing and docking sonars; long baseline, short baseline, and supershort baseline navigation systems; flexible hydrophone and projector arrays; and a variety of special-app... ]
Sonetech Corporation - Technology based systems development. Products include all-digital parametric sonar systems .
Meta Description: [ sonetechcorp.com ]
Sonsub International - Supply remotely operated vehicles, remote systems engineering, cable and pipeline burial, subsea systems, and light subsea construction support .
Meta Description: [ Sonsub has the ability to lay Umbilicals, Flexible Pipelines and to conduct complimentary Trenching, Diving, Survey, ROV and pre-commissioning services, supported by Subsea Inspection. Well Intervention and Decommissioning allows Sonsub to offer the Subsea Construction sector a fully integrated p... ]
Subacoustech Ltd - Consultancy in underwater acoustics. Services include the environmental effects of underwater sound, noise and diving and acoustic altimetry . United Kingdom .
Meta Description: [ Subacoustech provides consultancy and research into underwater acoustics on behalf of government and commercial organisations throughout the world. ]
Submetrix Ltd. - Designs, manufactures and sells sonar systems for hydrographic surveying. Brochures, technical information and useful tips.
Meta Description: [ Systems Engineering & Assessment Ltd (SEA) is an independent system integrator. Skills include prime contract services encompassing investment appraisals, concept and assessment studies, safety and risk audits. Domain knowledge includes sensor and real-time digital signal processing, communicati... ]
Subsea Services Incorporated - Provider of underwater inspection, maintenance and repair services to the marine industry.
Meta Description: [ a commercial diving company providing
underwater services to the maritime industry and the other industrial sectors whose
activities involve in-water structures ]
Sunwest Technologies, Inc. - Manufacture CTFM search and obstacle avoidance scanning sonars, doppler current profilers and acoustic test instruments.
Meta Description: [ sonar, CTFM, forward scanning sonar, long range search, obstacle avoidance, pinger receiver, beacon receiver ]
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