Teledyne Marine, in collaboration with Teledyne Geospatial, has successfully demonstrated its advanced suite of maritime security technologies during the SeaSEC Challenge 2025 (SCW25), a multinational event designed to evaluate critical underwater threat detection and infrastructure protection solutions in real-world maritime scenarios.
Held from 12–23 May off the coast of Scheveningen, Netherlands, SeaSEC brought together defense ministries from six nations, along with leading industry and research partners, to address growing threats in shallow-water maritime environments through operationally relevant exercises.
“SeaSEC provides an exciting opportunity to verify our technologies in operationally relevant conditions, collaborate with partners, and contribute to the broader maritime security community,” said Morten Bernsdorf, Teledyne Marine’s Project Lead.
Teledyne Marine participated in all three of SeaSEC’s core challenges, leveraging its full-stack capabilities across sonar, autonomous systems, and real-time data processing.
1. Sea What’s There – Detecting Covert Underwater Vehicles
This scenario tasked participants with detecting and tracking uncooperative autonomous underwater vehicles (AUVs) in real-time. Teledyne Marine deployed its Passive Acoustic Monitoring (PAM) system to initially detect acoustic signatures from a suspected AUV within a 1×1 km zone. Once contact was established, the SeaBat 7123 Forward-Looking Sonar was used for visual identification and continuous tracking.
Data from the field was transmitted in real-time to Teledyne Marine’s shore-based communication center, demonstrating rapid detection, localization, and tracking using integrated acoustic and sonar technologies.
2. No Pipe to Lose – Pipeline Threat Detection
This phase involved the identification and classification of threats near subsea pipelines. Teledyne Marine mobilized its Gavia AUV, outfitted with a SeaBat T20 multibeam sonar, to locate anomalies along the pipeline route. Parallel operations used a SeaBat T51 deployed from both a crewed survey vessel and a USV.
For buried threat detection, a harbour-based trencher fitted with the HydroPACT pipe tracker and guided by dual Teledyne BlueView sonars provided precision navigation and identification of hidden hazards. All collected data was processed and relayed to the operations center in near real-time for rapid threat response.
3. Fishy Finds – Detecting Seabed Anomalies
The final challenge required comparing current survey data with pre-existing maps to detect sabotage indicators or recent seabed disturbances. Teledyne Marine, which had also provided the baseline mapping data for this exercise, returned to the zone with its SeaBat T51 and Gavia AUV with T20 sonar to identify anomalies such as trenching or anchor drag marks.
To enhance situational awareness, Teledyne Geospatial contributed its lidar platform, while Teledyne PDS software facilitated near-real-time processing. Detected anomalies were immediately flagged and shared with the command center.
Persistent Visual Surveillance and Team Collaboration
In addition to underwater operations, Teledyne Marine deployed a FLIR infrared camera in the harbour to provide persistent visual surveillance over offshore challenge zones up to 8 nautical miles, directly supporting SeaSEC’s core planning group with live situational awareness.
Teledyne Marine also emphasized collaboration, working alongside partners including:
- Copenhagen Global – providing a USV platform integrated with Teledyne systems
- IHC – supplying a trencher equipped with Teledyne’s HydroPACT technology
This multinational event not only tested technological capabilities but fostered a spirit of operational cooperation among civilian and military stakeholders from six nations bordering the North Sea and Baltic Sea.
“Beyond technical validation, our team is keen to make a strong impression demonstrating the full scope of capabilities across sonar, AUV, hydrophones and more,” Bernsdorf added. “This commitment to SeaSEC reflects Teledyne Marine’s broader focus on advancing the tools and partnerships that help protect critical underwater infrastructure – a growing global priority in an increasingly connected maritime environment.”
Founded in December 2023 by the Ministries of Defence from six nations, SeaSEC promotes international collaboration for maritime security, bridging the gap between defense, infrastructure operators, industry, and research. The 2025 challenge represents the latest initiative to address common regional security risks in shallow-water coastal zones. Learn more about SeaSEC here >>
