Kongsberg Discovery has expanded the international use of its passive acoustic monitoring technology following the full integration of Naxys Technologies.
Naxy Technologies is a Bergen-based firm acquired in January 2025.
The system is aimed at helping oil, gas, and naval sectors detect anomalies early and monitor subsea environments and infrastructure.
Kongsberg Discovery specialises in ocean sensors and robotics, while Naxys has developed passive acoustic systems widely used in Norway’s energy sector.
Its hydrophone-based technology reportedly provides continuous acoustic monitoring to identify changes in flow, structural condition, and potential leaks, as well as other subsea anomalies.
According to Martin Wien Fjell, President of Kongsberg Discovery, the systems can be installed on underwater infrastructure or used as mobile arrays for inspection tasks.
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Fjell said: “This passive technology is a gamechanger. It can detect leaks far ahead of conventional systems, save millions of dollars in unplanned downtime, deliver precise critical infrastructure inspections, and help protect fragile ocean ecosystems by monitoring radiated noise from human activity and detecting nearby marine mammals.”
The system is designed to be adaptable. Sensors can be permanently installed on subsea structures for leak detection or fitted to equipment such as pumps and compressors to support performance monitoring and maintenance planning.
In mobile form, the technology can be used on ROVs or other assets to inspect installations or support surveillance and infrastructure protection, including in port environments.
It can also monitor radiated underwater noise to help users manage their acoustic impact.
Fjell added: “It’s not just the environments that our customers operate in that creates challenges, but also the evolving legislations and increasingly dynamic risk picture. This technology is tailored to meet those needs, helping users stay ahead, and in control, as they work to enhance safety, sustainability and standards in our oceans.”
