Key Factors – In a big development for naval warfare, the U.S. Navy’s Virginia-class fast-attack submarine, USS Delaware (SSN 791), has efficiently executed a pioneering unmanned mission throughout the U.S. European Command (EUCOM) space of operations.
In keeping with a Might 30, 2025, announcement by the U.S. Commander of Submarine Forces, the operation featured the Yellow Moray Unmanned Underwater Car (UUV).
This personalized REMUS 600 UUV is engineered for various underwater duties, together with mine countermeasures, surveillance, reconnaissance, and hydrographic surveys.
This mission represents the first-ever forward-deployed launch and restoration of a UUV by a submarine’s torpedo tube to meet a tactical goal, heralding a significant breakthrough in autonomous capabilities for the submarine pressure.
Validating Autonomous Undersea Operations
The groundbreaking mission comprised three distinct autonomous sorties, every lasting between six and ten hours, all carried out by the identical Yellow Moray UUV. Critically, all launch and restoration procedures had been carried out by way of the usDelaware’s torpedo tubes whereas the submarine remained submerged, eliminating the necessity for divers. This profitable demonstration validated the system’s reliability and operational effectiveness below real-world situations.
It powerfully underscores the strategic benefits of integrating robotic platforms into standard submarine operations, enabling novel approaches to subsea and seabed warfare (SSW) whereas markedly lowering dangers to naval personnel.
USS Delaware (SSN 791): A Platform for Innovation
Commissioned in April 2020, the usDelaware is the 18th Virginia-class submarine and a Block III variant. This formidable platform measures 115 meters (377 ft) in size, with a beam of 10.3 meters (34 ft), and displaces roughly 7,800 tonnes when submerged. Powered by an S9G nuclear reactor and a pump-jet propulsor, it might probably obtain submerged speeds exceeding 46 km/h (25+ knots) and function at depths higher than 240 meters (800+ ft).
The submarine is closely armed with 12 vertical launch system (VLS) tubes for Tomahawk cruise missiles and 4 533mm torpedo tubes able to launching Mk 48 ADCAP torpedoes. Its superior sensor suite, that includes the AN/BQQ-10 sonar and a Giant Aperture Bow (LAB) array, gives superior undersea detection. The united statesDelaware can be optimized for particular operations, geared up with reconfigurable payload areas and compatibility with dry deck shelters.
The Yellow Moray UUV: Extending Submarine Attain
The Yellow Moray, a mission-specific adaptation of the REMUS 600 UUV developed by HII’s Hydroid division, is designed for long-duration, high-endurance missions at depths as much as 600 meters (1,968 ft). The UUV is 3.25 meters (10.7 ft) lengthy, has a diameter of 0.32 meters (12.6 in), and weighs round 240 kg (530 lbs). Its modular structure permits for quite a lot of mission payloads, reminiscent of artificial aperture sonar, side-scan sonar, CTD (Conductivity, Temperature, Depth) sensors, Doppler Velocity Logs (DVL), and inertial navigation techniques. The Yellow Moray can function autonomously in GPS-denied environments and navigate advanced routes in each shallow and deep-water situations.
Key missions for the Yellow Moray embody seabed mapping, mine countermeasures, hydrographic reconnaissance, and monitoring of undersea infrastructure. It is usually adept at supporting intelligence, surveillance, and reconnaissance (ISR) operations in high-risk or denied areas the place conventional naval property may face unacceptable threats. The info supplied by the UUV affords operational commanders precious environmental and tactical intelligence, facilitating knowledgeable decision-making and simpler battlespace preparation.
Strategic Implications for the U.S. Submarine Power
The operational deployment of UUVs just like the Yellow Moray signifies a transformative enhancement of the U.S. Submarine Power’s mission capabilities. These autonomous techniques allow submarines to venture affect and collect intelligence far past manned operational limits.
They will conduct detailed surveys and reconnaissance in contested or hazardous maritime environments with out straight exposing the host submarine or its crew to hazard. Moreover, UUVs enhance the tempo and persistence of undersea operations, as they are often quickly redeployed for subsequent missions, typically with out requiring upkeep between sorties. The flexibility to launch and get better UUVs by way of torpedo tubes additionally preserves the submarine’s stealth and operational safety by eliminating the necessity to floor or deploy divers.
Vice Admiral Rob Gaucher, Commander of Submarine Forces, underscored the strategic advantages, stating that integrating autonomous techniques aboard submarines “reduces threat to personnel and permits distributed sensing in advanced environments.” He affirmed the Navy’s dedication to increasing these capabilities throughout the fleet, guaranteeing future assault submarines are geared up not solely with potent weaponry and sensors but additionally with unmanned techniques that act as pressure multipliers.
Overcoming Challenges: Innovation in Motion
The success of this mission additionally highlighted the adaptability and progressive spirit of the Submarine Power and UUV Group 1 personnel. Following an preliminary setback throughout trials in a Norwegian fjord in February, the place a UUV didn’t get better resulting from harm found post-launch, the system was swiftly returned to the U.S. for pressing repairs. SUBFOR then quickly redeployed the UUV again to the European theater. The united statesDelaware subsequently carried out a profitable expeditionary reload and executed a number of autonomous missions, together with the first-ever pierside diver-assisted torpedo tube UUV loading operation in Norway.
(July 9, 2018) – Multi-national Particular Operations Forces (SOF) take part in a submarine insertion train with the fast-attack submarine USS Hawaii (SSN 776) and fight rubber raiding craft off the coast of Oahu, Hawaii throughout Rim of the Pacific (RIMPAC) train, July 9. Twenty-five nations, 46 ships and 5 submarines, about 200 plane, and 25,000 personnel are taking part in RIMPAC from June 27 to Aug. 2 in and across the Hawaiian Islands and Southern California. The world’s largest worldwide maritime train, RIMPAC gives a novel coaching alternative whereas fostering and sustaining cooperative relationships amongst contributors crucial to making sure the security of sea lanes and safety of the world’s oceans. RIMPAC 2018 is the twenty sixth train within the sequence that started in 1971.` (U.S. Navy picture by Mass Communication Specialist 1st Class Daniel Hinton)

U.S. Navy Virginia-Class Submarine.

Western Australia, Australia (Feb. 25, 2025) The Virginia-class fast-attack submarine USS Minnesota (SSN 783) prepares to moor at HMAS Stirling, Western Australia, Australia, Feb. 25, 2025. Minnesota arrived in Western Australia kicking off the primary of two deliberate U.S. fast-attack submarine visits to HMAS Stirling in 2025. Minnesota is at present on deployment supporting the U.S. seventh Fleet, the U.S. Navy’s largest forward-deployed numbered fleet, working with allies and companions in preserving a free and open Indo-Pacific area. (U.S. Navy picture by Lt. James Caliva)
This operational triumph confirms the readiness of submarine-launched UUVs for a broad spectrum of crucial undersea warfare missions. Because the U.S. Navy continues its push in the direction of higher autonomy inside its undersea forces, the Yellow Moray’s deployment from the usDelaware marks a pivotal milestone within the evolution of Twenty first-century naval fight.
It paves the best way for a future the place manned and unmanned property collaborate seamlessly to make sure enduring undersea dominance.