picto marine surveillance

Defense

In recent years, appropriation of resources and maritime spaces by states have increased, generating an expansion of potential space for conflict. In this context, it is a challenge for states to increase their abilities to guarantee the freedom of action of their naval force or to protect their underwater infrastructures, interests, and resources.

  • undersea warfare
    • overview

      In an era of evolving threats, mastering sound waves is not just an advantage, it’s a strategic necessity.

       

      Why Underwater Acoustics Matters:

      Acoustic systems enable navies to detect enemy submarines, secure communications between units, and monitor sensitive areas often beyond the reach of radar. In the vast, opaque underwater environment, sound remains the most reliable medium for gathering intelligence and maintaining operational awareness.

       

      Key Challenges:

      Harnessing underwater acoustics is fraught with obstacles: ambient ocean noise, multi-path interference, limited bandwidth, and the critical need for stealth to avoid detection. These challenges demand continuous innovation and precision engineering to ensure effective and covert operations.

       

      Sercel, Leading the Way:

      Among industry leaders, Sercel stands out for its expertise in underwater acoustic solutions. By developing cutting-edge technologies, Sercel addresses the critical needs of navies worldwide, delivering systems like underwater acoustic modems that combine high performance with the discretion required for modern naval operations.

      As anti-submarine warfare challenges grow, underwater acoustics remains an invisible yet decisive asset for national security and sovereignty.

      SUBMARKETS

    • surveillance
    • We provide advanced underwater surveillance solutions to protect sensitive sites and infrastructure, detect threats, and support decision-making through real-time monitoring, data analysis, and secure acoustic communications.

      Find out more

    • Mines countermeasure
    • We deliver advanced underwater acoustic solutions for mines countermeasures, enabling secure, covert communication, autonomous decision-making, and reliable operations in harsh marine environments.  

      Find out more

    • Defense
    • We provide high-performance underwater acoustic systems for undersea warfare, enabling covert detection, long-range communication, and precise tracking of threats in challenging marine environments.

      Find out more

      Articles

    • MATS 3G
      • News
      • Marine surveillance
      • Case study
      30.01.2026
      Long range underwater acoustic communication experiment
      From cutting-edge engineering to proven results in the field, discover what’s shaping the future of underwater...
    • vector sensor microphone image
      • News
      • Marine surveillance
      • Article
      23.02.2026
      What is an acoustic vector sensor?
      Not all hydrophones listen the same way, and that difference matters. Conventional hydrophones measure...
    • Vector sensors for underwater operations
      • News
      • Marine surveillance
      • Article
      18.03.2026
      Vector sensors: a paradigm shift
      Where a traditional hydrophone hears “noise,” vector sensors can distinguish a cargo ship 5 km away, a dolphin off...
    • Defense underwater acoustic communication
      • News
      • Marine surveillance
      • Article
      26.08.2026
      Modern underwater communications overcoming limitations
      Defense operations face three key challenges: fading signals, vulnerable underwater communications, and the trade-...