Underwater Acoustic Monitoring

Different applications of acoustics monitoring

Innovative passive acoustic buoy for enhanced sound monitoring

Data analysis by experts to make the best decisions

Predict and prevent underwater acoustics from a dashboard

Detect and identify the marine mammals to prevent the impacts of human activities

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Remote Monitoring

PAM systems can be deployed in remote or inaccessible marine environments, allowing researchers to gather data from locations that are difficult or unsafe to reach by traditional means.

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Species Identification

PAM systems can identify specific marine mammal species present in an area, providing crucial information for implementing species-specific conservation measures and mitigating impacts.

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Noise Pollution

PAM can quantify and analyze underwater noise pollution generated by human activities, helping to identify sources and assess their impact on marine mammal communication, feeding, and mating behaviors.

A patended technology to record the underwater noises

Broadband hydrophones mounted on PAM buoys can detect the entire frequency range of marine mammal sounds, including those from common porpoises and dolphins.

Our patented PAM buoy is an innovative tool designed for advanced marine research and conservation.

This state-of-the-art buoy boasts three key patented features:



An interface for interaction between humans, machines, and marine mammals via aerial and underwater signals.



Capabilities for the detection, identification, and localization of marine mammals.



A device that reduces the impact of underwater noise pollution from human activities.

Together, these patents highlight our commitment to enhancing marine ecosystem sustainability and protecting marine life.

what is passive acoustic monitoring


Sinay can do the provision of the PAM buoy, the mob / demob and the maintenance during the operation phases.

This system allows:

  1. Detecting the presence of marine mammals. Particularly porpoises, which use wideband hydrophones tailored to high-frequency emissions.
  2. Measuring ambient noise levels and frequencies. Before and/or during construction work without risking hydrophone saturation (data acquisition for establishing a baseline state and construction phase monitoring.)
  3. Providing real-time alerts:
    – To report the presence of marine mammals
    – Indicate threshold exceedances (Temporary Threshold Shift and Permanent Threshold Shift according to 4 groups of marine mammals based on their specific sensitivity).
    – Alert on threshold exceedances in the presence of marine mammals.
  4. Offering a comprehensive dashboard for:
    – Real-time alert logs
    – Weekly report summaries
    – Reports on frequency analysis and baseline.reference phase and construction phase studies

Passive acoustic monitoring methodology

Eco-intelligence of the solution

We offer a comprehensive methodology for environmental surveillance through Passive Acoustics.

We ensure precise data collection by utilizing a protocol for ambient noise monitoring using submerged hydrophones and recorders, rooted in BAG/BACI methods.

This data fuels our modeling and mapping capabilities, providing a detailed depiction of the sound environment. Our adaptable monitoring approach caters to project phases, including initial assessment, baseline establishment, construction, and ongoing operation.

Mapping underwater noise

We employ advanced calculations and scenario-based modeling techniques for underwater noise modeling capabilities.

This enables the generation of detailed maps illustrating underwater noise distribution.

Our models provide insights into noise patterns and facilitate risk assessment, with specialized maps designed to highlight areas of concern for different species.

With our solution, gain invaluable insights into environmental risks and enhance decision-making processes for sustainable project management. Try it and monitor your noise emissions with our solution.

Sustainable Development Goals

SDG 9, industry, innovation and infrastructure
SDG 11, sustainable cities and communities
SDG 13, climate action
SDG 14, life below water

By leveraging underwater acoustic technology, our solution enhances supply chain efficiency, enables precise management, and advances environmental sustainability within the maritime industry, all while harnessing the power of data to meet specific sustainable development goals.

Underwater Noise Module

Predict and prevent underwater acoustics

Harmful underwater noise arises from various human activities such as piling for oil and gas, construction, shipping (including ship sounds and engine noise), port activities, military sonars, and seabed excavation. This type of noise, known as “anthropogenic noise,” can be monitored and predicted to mitigate its impact and bring it to safer levels. Additionally, detecting marine mammals within the monitored areas allows for generating alerts, aiding in informed decision-making processes. Thanks to our module it becomes easy to monitor from your dashboard.

Dashboard interfaces and features: 

  • Marine Mammals Alerts
  • Noise levels
  • Threshold Alerts
  • Threshold & MM Alerts
  • Weekly Reports
  • Cloud Access
  • Multi-sensor Integration