Last Updated on 2026 年 3 月 23 日 by 総合編集組
Global Advancements in Unmanned Surface Vehicles (USVs): From U.S. MASC to China’s Orca and Beyond – 2026 Overview
The field of unmanned surface vehicles (USVs) is undergoing rapid transformation, shifting naval warfare paradigms from large manned platforms to distributed, autonomous, and resilient hybrid fleets. Driven by advances in AI navigation, modular payloads, and distributed lethality concepts, major powers are investing heavily to integrate USVs into high-risk missions such as persistent reconnaissance, strike operations, and anti-submarine warfare.
Market Growth and Regional Dominance Recent market analyses estimate the global USV market at approximately USD 2.4 billion in 2025, growing to USD 2.5 billion in 2026 and reaching USD 3.55 billion by 2034 at a CAGR of around 4.5%. More optimistic forecasts suggest higher growth rates (up to 10-14% in some segments) due to accelerated defense procurement and falling technology costs.
North America holds the leading position with a 36.7% market share in 2025, primarily thanks to substantial U.S. Navy modernization budgets and a mature ecosystem of advanced manufacturers. Smaller and medium-sized USVs currently dominate due to cost-effectiveness and suitability for littoral and shallow-water operations, while large and extra-large variants (LUSV/XLUUV) are advancing quickly for integration with carrier strike groups or independent blue-water missions.
U.S. Navy’s Hybrid Fleet Vision: Ghost Fleet Overlord to MASC Program The U.S. Navy pursues a multi-path strategy, evolving from technology demonstrations to structured acquisition. The Ghost Fleet Overlord program, led by the Strategic Capabilities Office, tested retrofitted commercial fast support vessels. Key milestones include:
- Nomad (OUSV 1): Completed a 4,421-nautical-mile trans-Pacific voyage with 98% fully autonomous operation.
- Ranger (OUSV 2): Demonstrated containerized vertical launch system (VLS) firing SM-6 missiles, transitioning USVs from sensor platforms to strike assets.
- Mariner (OUSV 4): Integrated virtualized Aegis combat system, enabling remote node functionality within manned fleets.
- Vanguard (OUSV 3): First purpose-built large USV under construction by Austal USA.
In 2025, the Navy consolidated Medium (MUSV) and Large (LUSV) programs into the Modular Surface Attack Craft (MASC) initiative, emphasizing commercial standards, long endurance, and high payload capacity. MASC variants include:
- Baseline: Two 40-ft ISO containers, 2,500 nm range at 25 knots.
- High-capacity: Four containers, potentially carrying 16 Tomahawk or 64 ESSM missiles.
- Multi-mission: Rapid reconfiguration via Mark 70 payload delivery system for ASW, strike, or EW roles.
First production LUSV is slated for FY2027 procurement at around USD 497 million, with follow-on units dropping to approximately USD 326 million. Leidos leads in autonomy with trimaran designs like Sea Hunter and Seahawk (over 300,000 autonomous nautical miles logged) and the high-speed Sea Archer (40 knots, 1-ton payload) optimized for attritable swarm operations.
China’s Independent Combat Approach: JARI-USV-A “Orca” China pursues a distinct path, designing USVs as near-equivalent to miniature destroyers with standalone combat capability. Unveiled at Zhuhai Airshow 2024, the JARI-USV-A (Orca) measures 58-60 meters long, with 420-500 tons displacement—significantly larger than U.S. counterparts. Key features:
- Trimaran hull with low draft (~2 m), ideal for shallow contested waters like the Taiwan Strait and South China Sea.
- 360-degree AESA radar suite on the mast.
- Armament: 12-cell VLS, 57mm main gun, torpedo tubes, and unmanned helicopter deck.
- Maximum speed ~42 knots, range ~4,000 nm.
This configuration enables dense firepower projection, supporting area denial within the first island chain. However, Western analysts question survivability: larger size may undermine the “expendable” concept, turning it into a high-value target. Doubts also persist regarding full AI autonomy without manned support.
Turkey’s Asymmetric Edge: ULAQ Family Ecosystem Leveraging success in UAVs (e.g., Bayraktar TB2), Turkey rapidly expanded into maritime domains via Ares Shipyard and Meteksan Defense. The ULAQ series supports the “Blue Homeland” doctrine with cost-effective, multi-role armed USVs (AUSVs):
- Anti-surface variant: Cirit laser-guided rockets and L-UMTAS missiles.
- Anti-submarine: Light torpedoes and sonobuoy dispensers.
- ISR/SAR: Advanced EO sensors and encrypted comms.
- KAMA loitering munition: Low RCS, 200 kg warhead, speeds over 50 knots for saturation attacks.
Demonstrated in Denizkurdu-2021 exercises with live rocket strikes, ULAQ excels in UAV-USV teaming (UAV as relay and designator). Anti-jamming GNSS and onboard decision algorithms ensure resilience in contested electromagnetic environments.
Israel’s Precision Multi-Mission Platform: Seagull Elbit Systems’ Seagull (12 m length) integrates mine countermeasures (MCM) and anti-submarine warfare (ASW) on a compact hull:
- Full end-to-end mine hunting: Detection, classification, localization, and neutralization via expendable vehicles.
- High-end sonar: KATFISH synthetic aperture and TRAPS towed arrays, typically found on larger warships.
- Endurance: Over 4 days at cruise speed, covering Israel’s EEZ.
Rafael’s Protector and IAI platforms add AI-driven anomaly detection for asymmetric threat prevention.
UK’s Hybrid Navy Ambition: Project Beehive and ARMOR Facing fleet reductions, the Royal Navy emphasizes unmanned integration for global reach. Project Beehive procured 20 Kraken K3 Scout USVs (55 knots, 650 nm range) for deployment from Type 26/31 frigates. Babcock’s ARMOR Force includes:
- ROMULUS USV (~58 m, AI Odyssey autonomy) for long-range ASW and air defense.
- Cobalt OS for manned-unmanned coordination.
- Modular PODs for rapid sensor/weapon swaps.
Milestone tests in 2025 involved Rattler USVs operating 500 miles from controllers.
Core Technologies and Future Trends True competitiveness lies in software and sensor fusion rather than hulls alone. Leading systems (Leidos LAVA, HII Odyssey) achieve COLREGS-compliant full autonomy. Multi-modal fusion (EO/IR, GNSS, sonar) builds accurate 3D models. Modular Open Systems Approach (MOSA) enables cross-vendor integration of autonomy, command, sensors (AESA/SAS), weapons (VLS/PDS), and hybrid propulsion for silent, long-endurance operations.
Challenges and Debates Despite impressive demos, real-world issues persist: mechanical reliability in harsh marine conditions, lack of onboard maintenance, and brand concerns (e.g., Austal’s past LCS issues). Strategic debates contrast heavily armed platforms (China’s Orca) versus low-cost swarms (Ukraine-inspired or Leidos Sea Archer). Many experts view USVs’ greatest value as sensor extenders providing precise targeting for manned assets.
Conclusion USVs represent a revolutionary shift toward personnel-safe, resilient sea control. Over the next 5-10 years, expect transitions to man-on-the-loop autonomy, cross-domain swarming (USV + UUV + UAV under JADC2), and civil-military tech synergy. Mastering this domain is essential for 21st-century maritime power.
