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Naval ship protection

While measures such as floating barriers offer protection against surface attack, divers and underwater drones pose a growing, yet challenging threat. That’s where constant, real-time underwater monitoring using a diver detection sonar comes in. Arrive. Deploy. Protect.

What our tech can do for you


Underwater protection from the moment you arrive at anchorage


Integrates with your existing above water security sensors


Detection range of underwater threats with one Sentinel sonar head


Track threats from underwater drones as well as divers

Rapid deployment on any vessel

Naval ships anchored off the coast or berthed in ports and dockyards are difficult assets to protect because of their size and proximity to commercial shipping traffic, open shipping lanes and leisure users. Whilst physical measures such as floating barriers offer ships protection against surface attack using fast boats, divers using easily acquired scuba equipment remain a significant, yet hard to detect threat.

Time is of the essence

Sentinel is commercial-off-the-shelf (COTS) underwater security technology that is now in service with several navies around the world. It delivers a rapidly deployable force-protection capability with high probability detection, solid tracking performance, very low false alarm rates and long-range performance – even in challenging environments like ports.

Detect in real time

The ability to reliably detect underwater intruders and AUVs in real-time at long range is essential to providing ample time for ship security officers to react to a security breach. Vital minutes can make the difference between successful threat interception and divers and vehicles being able to deliver their attack.

Sentinel’s compact size and lightweight design make it a practical solution for force protection in support of military ships visiting overseas ports, as well as homeland expeditionary roles securing naval bases and ports of embarkation/ debarkation. With both temporary and permanent installation options catered for, Sentinel’s compact sonar can be deployed using its own cable over the side of small craft patrolling inland waterways, through the hull of a naval vessel (e.g. Offshore Patrol Vessels) or lowered on a lightweight frame directly onto the seabed.

If required, track data can also be exported via an open, industry standard interface to the vessel’s Combat Management System or integrated bridge.

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