US Navy MH-60R Helicopters Enhance Submarine Detection Capabilities with MAD-XR Sensor.

The U.S. Navy’s fleet of MH-60R Seahawk helicopters will soon receive a capability upgrade in the field of anti-submarine warfare with the integration of the MAD-XR magnetic detection system. Developed by CAE and integrated by Sikorsky, a Lockheed Martin subsidiary, this new-generation sensor is designed to detect anomalies in the Earth’s magnetic field caused by large submerged metallic structures such as submarines. The program is the result of cooperation between Sikorsky, CAE, the U.S. Navy, and the Royal Australian Navy.
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MAD-XR is positioned as a strategic addition to the MH-60R’s operational toolkit, providing a discrete, mobile, and efficient submarine detection capability in various environments (Picture source: US DoD) 

The MAD-XR (Magnetic Anomaly Detection – Extended Role) system represents a departure from previous MAD sensor generations. Unlike the legacy AN/ASQ-81 system, which was heavy and externally mounted on SH-60B helicopters, MAD-XR is compact and lightweight, weighing less than 9 kg, and does not require permanent modification to the aircraft. It can be quickly installed or removed and can operate either independently or in coordination with other anti-submarine systems such as sonobuoys or dipping sonar.

The system consists of sensitive magnetometers and a processing/interface unit. The crew receives both audio and visual alerts when a contact is detected, including range data. Its modular design allows operational flexibility, enabling rapid transfer between aircraft as mission requirements evolve. In January 2024, the U.S. Navy released a software and hardware update to its MH-60R fleet to ensure compatibility with the digital MAD-XR system.

In September 2024, Sikorsky was awarded a $21 million contract by the U.S. Navy to supply 28 MAD-XR kits. Of these, 20 are designated for the Royal Australian Navy, six for the U.S. Navy, and two for U.S. Navy Reserve evaluation. The contract includes options for an additional 24 kits in both 2025 and 2026. Deliveries are scheduled through May 2026.

MAD-XR is positioned as a strategic addition to the MH-60R’s operational toolkit, providing a discrete, mobile, and efficient submarine detection capability in various environments. According to Sikorsky Maritime Systems, the removable and autonomous nature of the sensor enhances the aircraft’s anti-submarine warfare function. CAE notes the system’s relevance and adaptability for defense and security operations.

The Royal Australian Navy will serve as the first operational user of the MAD-XR, integrating the system on its MH-60Rs. Sikorsky Australia highlighted the importance of the partnership with the Royal Australian Navy in deploying and sustaining the capability and its implications for the fleet’s operational performance.

The MH-60R Seahawk remains a central platform in maritime warfare for the U.S. Navy and serves as the backbone of its shipborne helicopter fleet. Designed for multi-mission roles, it is employed in anti-submarine warfare, surface warfare, electronic warfare, airborne command and control, and secondary tasks such as logistics, search and rescue, naval gunfire support, and intelligence gathering. Achieving full operational capability in 2010, it replaced the SH-60B and SH-60F and maintains one of the highest mission readiness rates in its class.

The MH-60R measures nearly 20 meters in length and can weigh up to 23,500 pounds at maximum gross weight. It is powered by two GE T700-GE-401C or -401D engines and operated by a crew of three. It can be armed with Mk 54 torpedoes, AGM-114 Hellfire missiles, and door-mounted machine guns. Its sensor suite includes the APS-153(V) radar, the AN/AQS-22 dipping sonar, sonobuoy processing systems, and now the MAD-XR. It also incorporates electronic warfare systems and partial armor, enabling it to operate in high-threat environments with extended autonomy.

The integration of MAD-XR on MH-60R helicopters marks a notable development in airborne anti-submarine capabilities. Lightweight, modular, and compatible with existing mission systems, the MAD-XR expands the detection options available to U.S. and Australian naval forces, reinforcing their undersea situational awareness while adapting to the operational demands of contemporary naval conflict. Combined with an already versatile and proven platform, the MAD-XR completes a detection and engagement suited to modern maritime operations.