Sensor Technology Limited
- Producer of piezoelectric ceramics and materials for transducer OEMs. Manufacturer of underwater sensor and transducer devices.
- http://sensortech.ca/

Advansys Solutions Ltd
- Design and develop software for sonar used in navel combat systems.
- http://www.advansyssolutions.co.uk/

AquaCoustic Remote Technologies Inc
- Providing remote-sensing services for your underwater needs, using SONAR systems and proprietary software programs.
- http://www.aquacoustic.com/

Klein Associates
- Manufacturer of side scan sonar systems, navigation and intrusion detection.
- http://www.l-3klein.com/

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
- http://www.novaray.com

Subsea Services Incorporated
- Provider of underwater inspection, maintenance and repair services to the marine industry.
- http://www.subsea.com.ph

J & 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.
- http://www.jsmarine.co.uk/

SRD Ltd. - Sonar Research & 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.
- http://www.srduk.com

Klaxon Signals Ltd.
- Manufacturer the Vitavox range of naval and underwater loudspeakers and microphones.
- http://www.klaxonsignals.com

L-3 Communications ELAC Nautik GmbH
- Manufacture echosounders and sonars, underwater communication systems, multibeam systems, transducers and hydrophones.
- http://www.elac-nautik.com/

Subacoustech Ltd
- Consultancy in underwater acoustics. Services include the environmental effects of underwater sound, noise and diving and acoustic altimetry . United Kingdom .
- http://www.subacoustech.com/

Marschall Acoustics Group
- Design and manufacture acoustic and nonacoustic instrumentation for underwater and subsurface geophysical imaging applications for the industrial, government, and defence sectors.
- http://www.hydrophones.com/

LinkQuest Inc.
- Designs and manufactures 9600 baud, underwater acoustic modems and precision marine geodetic systems.
- http://www.link-quest.com/

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.
- http://www.marine-acoustics.co.uk/

Sunwest Technologies, Inc.
- Manufacture CTFM search and obstacle avoidance scanning sonars, doppler current profilers and acoustic test instruments.
- http://www.sunwest-tech.com/

Naval Technology.com
- Links to products and service companies providing a range of sonar and acoustic maritime and undersea equipment.
- http://www.naval-technology.com/contractors/sonar/index.html

Submetrix Ltd.
- Designs, manufactures and sells sonar systems for hydrographic surveying. Brochures, technical information and useful tips.
- http://www.submetrix.co.uk/

Ocean Engineering Enterprises
- Manufactures underwater loudspeakers, hydrophones, diver recall systems, diver signaling devices and synchronized swimming sound systems .
- http://www.oceanears.com/

Neptune Sonar Limited,
- Manufacture, calibrate and supply underwater sonar acoustic transducers for commercial and military applications.
- http://www.neptune-sonar.co.uk/

Sonsub International
- Supply remotely operated vehicles, remote systems engineering, cable and pipeline burial, subsea systems, and light subsea construction support .
- http://www.sonsub.com/

Sonatech
- Underwater acoustic systems development organization. Includes underwater sonar, navigation and tracking systems. A Channel Technologies company.
- http://www.sonatech.com/

Sonalysts, Inc.
- Provides analysis of submarine sonar systems, and a wide variety of airborne, surface, subsurface and land-based navy systems.
- http://www.sonalysts.com/

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 .
- http://www.sippican.com/

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.
- http://www.seabeam.com/

Lowrance
- Manufacturer of recreational marine and GPS electronics for the consumer sport fishing, boating, aviation, automotive and outdoors recreation markets.
- http://www.lowrance.com/

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.
- http://www.itc-transducers.com

Gearing & Watson Electronics Ltd
- Manufacture and supply a wide range of shakers for vibration testing, sonar systems, underwater transducers and power amplifiers.
- http://www.gearing-watson.com/

Ocean News and Technology Buyer's Guide
- Firms working in the oceans and seas.
- http://www.ocean-guide.com/

Benthos Inc
- Designs and manufactures oceanographic and robotic systems for research, exploration and defense, and through datasonics transducers.
- http://www.benthos.com/

Lubell Labs
- Manufacture underwater speakers for the scientist, synchronized swimmer, lap swimmer, and scuba diver.
- http://www.lubell.com/