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MQ-9B SeaGuardian® UAS Undergoes Testing with Anti-Submarine Sensors

GA-ASI has successfully demonstrated the first-ever Anti-Submarine Warfare (ASW) capability on an MQ-9B SeaGuardian® UAS, deploying and testing anti-submarine sensors during trials conducted in January 2025 By William Mackenzie / 03 Mar 2025
MQ-9B SeaGuardian® UAS Undergoes Testing with Anti-Submarine Sensors
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General Atomics Aeronautical Systems, Inc. (GA-ASI) has demonstrated the first-ever Anti-Submarine Warfare (ASW) capability on an MQ-9B SeaGuardian® unmanned aerial system (UAS). 

In a test which took place from January 20-30, 2025, a company-operated MQ-9B SeaGuardian successfully deployed and tested anti-submarine sensors using multiple pre-production Sonobuoy Dispensing System (SDS) pods.

Having already proven its ability to track submerged targets, the SeaGuardian took this capability further with GA-ASI’s newly designed SDS pods. These pods deployed multiple sonobuoys to conduct onboard thermal-depth and acoustic data processing. 

Using Directional Frequency Analysis and Recording (DIFAR), Directional Command Activated Sonobuoy System (DICASS), and Bathythermograph sonobuoys, SeaGuardian effectively detected, tracked, and analyzed underwater targets while collecting critical acoustic intelligence.

As part of the development process, GA-ASI successfully deployed multiple DIFAR and DICASS test sonobuoys, precisely correlating ejection speed with stress/strain data. This provided a high-fidelity launch model to refine future deployment capabilities.

Naval Air Warfare Center Aircraft Division (NAWCAD) AIRWorks played a key role in supporting and overseeing the development, ensuring the system meets emerging warfighter needs. AIRWorks has partnered with GA-ASI in multiple ASW demonstrations, including the Rim of the Pacific (RIMPAC) exercise in July 2024.

With strong demand already in place from multiple customers, GA-ASI reportedly anticipates increasing interest in the MQ-9B SeaGuardian, given its high-end maritime capabilities at a significantly lower cost than traditional manned maritime platforms.

GA-ASI President, David R. Alexander, stated, “This demonstration represents a major leap forward in unmanned capabilities and marks a major milestone in proving that an unmanned aircraft can perform end-to-end persistent ASW operations. The success of this testing paves the way for enhanced anti-submarine warfare capabilities on the MQ-9B SeaGuardian. We look forward to continued collaboration with the U.S. Navy as they explore innovative solutions for distributed maritime operations in the undersea domain.”

To learn more, visit the General Atomics Aeronautical Systems, Inc Partner Hub: Innovation Partner Hub
Posted by William Mackenzie Will is a Content Specialist at Unmanned Systems Technology. Joining in 2024 with a background in professional copywriting and content marketing, Will covers the latest advancements in robotics, sensors, and unmanned systems across land, air, and maritime domains. His writing brings a clear, informed perspective to emerging technologies and their applications in both commercial and defense markets. Connect

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