UK: Additional Remus 300 Unmanned Underwater Vehicles for Royal Navy.

According to a PR published by Huntington Ingalls Industries on May 6, 2024, the Royal Navy has improved its underwater capabilities with the acquisition of additional unmanned vehicles from HII.
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Remus 300 Unmanned Underwater Vehicle. (Picture source: HII)

This transaction represents a notable step forward in the enduring partnership between HII and the UK's Ministry of Defence. Over the last two decades, the UK has relied on a mix of REMUS 100s, 300s, and 600s for mine countermeasure missions. Impressively, the first two REMUS 100s acquired in 2001 remain in operation, underscoring the resilience and modernization of HII's UUVs.

These newly acquired REMUS 100s and 300s, known for their versatility and reliability, will improve the Royal Navy's operational efficiency across various maritime missions. Their advanced sensor suites and systems equip them to handle tasks ranging from reconnaissance to mine countermeasures.

The delivery of these vehicles continues HII's tradition of providing underwater technology to allied nations. With over 600 UUVs delivered to 30 countries, including 14 NATO members, HII maintains a global footprint in underwater defense systems. Recent achievements include the sale of a REMUS 620 to a customer in the Indo-Pacific, the successful launch of a UUV from a submarine torpedo tube using the Yellow Moray system, and expanding a contract with the U.S. Navy to build up to 200 small UUVs.

Technical comparison

The REMUS 100 is designed for coastal operations, able to dive up to 100 meters and operate for up to 10 hours. It is a lightweight, portable vehicle commonly used for shallow water mine countermeasures and environmental assessments. Its dual-frequency sonar system provides imaging suitable for identifying seabed objects.

In contrast, the REMUS 300 can reach depths of up to 305 meters with an endurance of up to 30 hours. It offers modularity, allowing for different sensor payloads and mission-specific configurations. This vehicle is suitable for operations like mine countermeasures, hydrographic surveying, and intelligence, surveillance, and reconnaissance (ISR) missions.

The REMUS 600, with a maximum depth rating of 600 meters, can operate for up to 70 hours. It incorporates synthetic aperture sonar for high-resolution imaging, suitable for mine detection and hydrographic surveying in deeper waters. Its modular design accommodates varied mission requirements, from underwater archaeology to mine hunting​.