The USA accelerates the production of sensors launched into the ocean to hunt quieter submarines, and the new system promises to detect targets at greater distances in rough seas, shallow waters, and noisy areas, changing the game of anti-submarine warfare.

Written by Fabio Lucas Carvalho

Published on 12/04/2026 at 13:06

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The expansion of the production of AN/SSQ-125B sonobuoys by the United States reinforces the commitment to systems capable of detecting quieter and more sophisticated submarines at greater distances, in shallow waters, rough seas, and areas with high noise, enhancing the surveillance and response capability of the Navy

The United States will expand the production of devices aimed at submarine detection with the manufacturing of AN/SSQ-125B sonobuoys, in a move that strengthens the U.S. Navy’s ability to identify increasingly silent and sophisticated underwater threats.

The new phase will be led by Ultra Maritime, a company based in Massachusetts, following the signing of a contract to initiate Low Rate Initial Production of the system.

Sonobuoys are small disposable sensors launched into the ocean, typically by aircraft, that act as temporary underwater listening systems. These devices capture sound signals in the marine environment and transmit the data for analysis, allowing support for submarine surveillance and tracking operations.

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New production reinforces surveillance against submarines

The latest version, the SSQ-125B, was developed to detect quieter and more advanced submarines at greater distances and in complex ocean environments. The update represents a significant advancement for modern anti-submarine warfare operations, in a scenario where underwater threats are becoming increasingly difficult to locate.

The contract signed with the U.S. Navy is fixed-price and sole-source, focusing on Low Rate Initial Production of the AN/SSQ-125B. The goal is to meet annual demands for training, peacetime operations, testing, and building sufficient stock to support large combat operations, within the naval munitions requirements process.

Carlo Zaffanella, president and CEO of Ultra Maritime, stated that the contract marks an important step in advancing anti-submarine warfare technology for the U.S. Navy. He declared that the Q-125B was designed to enable the detection of even the quietest submarines at greater distances than before.

Technology bets on greater range and faster response

The executive also highlighted that the expanded performance and greater detection area bring substantial improvements to the submarine destruction chain in anti-submarine warfare operations. In the assessment presented by the company, this offers operators clearer acoustic data and faster, more reliable decision-making.

The announcement also reflects a growing emphasis on improving underwater detection capabilities. With the increasing sophistication of threats in the maritime environment, the production of these sonobuoys now meets not only immediate operational use but also the expansion of the Navy’s stockpiles.

Ultra Maritime reported that the Q-125B incorporates advanced signal processing and enhanced acoustic performance to operate effectively in demanding ocean conditions. The need for greater resilience in the face of challenging acoustic environments has gained importance as the underwater battlefield has become more complex.

Investments expand production and sustain anti-submarine capability

To make this new capability viable, the company has made internal investments in sonar technologies and manufacturing facilities specifically built for the development and production of next-generation sonobuoys. The infrastructure has been prepared to ensure production readiness, scalability in the face of growing demand, and long-term sustainability of critical anti-submarine warfare capabilities.

The company also emphasized its expertise in acoustic engineering and manufacturing processes as the foundation for the continuous evolution of this technology. The positioning reinforces Ultra Maritime’s role as a strategic supplier of sonar systems and advanced anti-submarine combat resources.

Reports indicate that traditional detection methods have been losing effectiveness as submarine technology evolves. Therefore, systems like the AN/SSQ-125B have been designed to improve sensitivity, signal processing, and performance in challenging acoustic scenarios, such as shallow waters or areas with significant background noise, including navigation routes and rough seas.

These sonobuoys often operate as part of a larger network, with multiple units spread across a wide area to form an underwater surveillance grid. This arrangement allows operators to triangulate and track submarine movements more accurately, reinforcing the strategic weight of these devices in future naval operations.

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The USA accelerates the production of sensors launched into the ocean to hunt quieter submarines, and the new system promises to detect targets at greater distances in rough seas, shallow waters, and noisy areas, changing the game of anti-submarine warfare.

New production reinforces surveillance against submarines

Technology bets on greater range and faster response

Investments expand production and sustain anti-submarine capability

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The USA accelerates the production of sensors launched into the ocean to hunt quieter submarines, and the new system promises to detect targets at greater distances in rough seas, shallow waters, and noisy areas, changing the game of anti-submarine warfare.

New production reinforces surveillance against submarines

Technology bets on greater range and faster response

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