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 Sercel Underwater Acoustics (ex Orca Instrumentation) develops and markets underwater data transmission systems and marine instrumentation for oceanographic engineering, scientific community, military and oil & gas applications.


The company's products include underwater acoustic communication and positioning systems, passive acoustic monitoring and marine mammal detection systems, ocean bottom seismometers, mooring monitoring beacons, acoustic transducers and hydrophones. You will find below a description of the different products we designed for underwater acoustic applications. 

In addition, Sercel, in partnership with SHIP AS A SERVICE, provides a marine test center to help you achieve your in-sea equipment project goals: from testing and validation through to qualification. 

Learn more about our new facility and it's capabilities here MARINE TEST CENTER

Discover our products range in more details below: 



MATS LT is a cost-effective micro modem dedicated for underwater acoustic communication and positioning.

Its small size, weight and reduced power consumption make MATS LT an ideal solution for compact AUV. Highly efficient, the micro underwater acoustic modem allows a communication range up to 3,500 meters.

MATS LT can also be used for your underwater IOT applications.

The modem is available in two versions: either cased (water-resistance up to 500 m) or uncased ready for integration in your own solution.

Find out more about MATS LT here MATS LT SPECIFICATIONS​



MATS 3G is an underwater acoustic modem that offers a single solution for all underwater communication needs. Its state-of-the-art DSP (Digital Signal Processing) technology ensures long-range and reliable communication.

MATS 3G is ideal for AUV (Autonomous Underwater Vehicle) communication. As well as being compact and light, it has a high data-rate link, which can be used to transfer images from a subsea camera or side-scan sonar data to a master vessel at the surface. When deployed in an offshore drilling platform environment, it provides an error-free underwater communication solution to command subsea valve operations.

MATS 3G’s use can range from oceanographic applications to real-time monitoring by networked stations across vast instrumented fields.

To know more about it, please download the MATS 3G Brochure​



QuietSea’s passive acoustic monitoring (PAM) system is designed to detect the presence of marine mammals during offshore operations.

QuietSea provides high marine mammal detection capabilities in a wide frequency listening range that covers a large variety of vocalizing cetacean species. QuietSea is particularly adapted to civil engineering projects where marine construction activities are likely to produce underwater noise and vibration levels capable of causing injury and disturbance to marine mammals. QuietSea provides appropriate monitoring and mitigation measures of marine life and allows to protect mammals during marine operations. For environmentally responsible operations, QuietSea complies with the increasingly widespread marine mammals monitoring regulations worldwide. 

To know more about it, please download the QuietSea Brochure​



GeoTag is an acoustic positioning system that has been designed to work with any ocean bottom or transition zone seismic equipment down to 500 meters deep. GeoTag is the smallest acoustic transponder on the market, allowing flexible and cost effective operations due to its ability to be stored on a reel and deployed by mechanical squirter.
GeoTag can be deployed for shallow and deep surveys. Up to 10,000 transponders can be used per system.
GeoTag benefits from Sercel’s expertise in advanced acoustic technologies to provide a reliable state-of-the-art turnkey solution for your acoustic positioning needs.

To know more about it, please download the GeoTag Brochure​



Designed to retrieve a buoy in case of mooring line break, BABS warns owners of line breakage by transmitting a signal to ARGOS satellites while BASM alerts of underwater equipment that may surface by transmitting through the same ARGOS satellite system.

To know more about it, please download the  Argos Beacon Brochure​


If you need more information, please contact us here.