Security and Defense

Seiche delivers advanced underwater acoustic technologies and specialist marine environmental expertise to support defence and security operations worldwide. Combining innovative sensing systems, autonomous platforms and acoustic analysis, Seiche provides solutions that enhance maritime domain awareness, improve operational effectiveness and support environmentally responsible defence activities.

Seiche’s capabilities include the deployment of bespoke hydrophones, passive acoustic monitoring systems and autonomous platforms such as the AutoNaut Uncrewed Surface Vehicle (USV) to detect, classify and monitor underwater targets across a wide range of operational environments. These systems can be configured for persistent surveillance, anti-submarine warfare support, harbour protection, critical national infrastructure monitoring and the detection of uncrewed underwater vehicles (UUVs) and other underwater threats. The long-endurance AutoNaut platform enables continuous remote data collection while reducing operational costs and personnel exposure.

Complementing its detection capabilities, Seiche develops bespoke acoustic sensor systems and integrated data acquisition solutions that can be tailored to meet specific mission requirements. Advanced signal processing and data analysis enable the identification, localisation and characterisation of underwater sound sources, providing actionable intelligence for defence and security organisations.

Seiche also provides world-leading expertise in underwater noise assessment and environmental compliance. Through underwater noise modelling, field measurements and real-time acoustic monitoring, Seiche assesses the impacts of sonar, naval exercises, vessel operations, underwater detonations and offshore infrastructure on marine mammals, fish and other marine life. These assessments support environmental impact studies, operational planning and regulatory compliance while helping to minimise environmental risk.

By integrating autonomous technologies, specialist sensors and marine environmental expertise, Seiche delivers a complete capability spanning target detection, underwater surveillance, acoustic monitoring and environmental assessment. This enables defence organisations to conduct safe, effective and sustainable maritime operations while maintaining compliance with environmental legislation and supporting the long-term protection of the marine environment.