Designs and manufactures oceanographic and robotic systems for research, exploration and defense, and through datasonics transducers.

Manufacture and supply a wide range of shakers for vibration testing, sonar systems, underwater transducers and power amplifiers.

Manufacturer of acoustic transducers for ship and submarine sonar, oceanographic survey, seismic exploration, marine life research, medical devices and industrial proximity sensing.

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.

Manufacturer the Vitavox range of naval and underwater loudspeakers and microphones.

Manufacturer of side scan sonar systems, navigation and intrusion detection.

Manufacture echosounders and sonars, underwater communication systems, multibeam systems, transducers and hydrophones.

Designs and manufactures 9600 baud, underwater acoustic modems and precision marine geodetic systems.

Prime contractor for many sonar systems.

Designer and manufacturer of sonar, gps, mapping and aviation instruments. Includes a sonar tutorial and a dealer locator .

Manufacture underwater speakers for the scientist, synchronized swimmer, lap swimmer, and scuba diver.

Supplies a wide range of sonar products and related services to both the defence and commercial customer. Technical papers and career opportunities.

Design and manufacture acoustic and nonacoustic instrumentation for underwater and subsurface geophysical imaging applications for the industrial, government, and defence sectors.

Links to products and service companies providing a range of sonar and acoustic maritime and undersea equipment.

Manufacture, calibrate and supply underwater sonar acoustic transducers for commercial and military applications.

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

Manufactures underwater loudspeakers, hydrophones, diver recall systems, diver signaling devices and synchronized swimming sound systems .

Firms working in the oceans and seas.

Manufactures multibeam swath ocean survey sonars and related services used to map the ocean floor. Includes a listing of agents and trade show activities.

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 .

Provides analysis of submarine sonar systems, and a wide variety of airborne, surface, subsurface and land-based navy systems.

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.

Underwater acoustic systems development organization. Includes underwater sonar, navigation and tracking systems. A Channel Technologies company.

Technology based systems development. Products include all-digital parametric sonar systems .

Supply remotely operated vehicles, remote systems engineering, cable and pipeline burial, subsea systems, and light subsea construction support .

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.

Consultancy in underwater acoustics. Services include the environmental effects of underwater sound, noise and diving and acoustic altimetry . United Kingdom .

Designs, manufactures and sells sonar systems for hydrographic surveying. Brochures, technical information and useful tips.

Provider of underwater inspection, maintenance and repair services to the marine industry.

Manufacture CTFM search and obstacle avoidance scanning sonars, doppler current profilers and acoustic test instruments.