U.S. Navy Plans 47 MUSV Drone Ships Through 2031 for Indo-Pacific To Counter Chinese Threat.

The U.S. Navy is moving the Medium Unmanned Surface Vessel (MUSV) into large-scale fleet procurement, with its May 2026 Shipbuilding Plan allocating $171 million in FY27 for three vessels and $3.11 billion through FY31 for a planned fleet of 47 platforms. The move signals a major expansion of the Navy’s ability to conduct scouting, screening, deception, sensing, and strike missions in contested waters without committing crewed destroyers or frigates to every forward operation.

Published in May 2026, the plan places MUSV alongside battle force and auxiliary ships for the first time, showing the Navy now considers the platform operationally viable rather than experimental. The vessel is expected to strengthen Distributed Maritime Operations by expanding sensor coverage, dispersing combat risk across more platforms, and increasing the fleet’s capacity to sustain pressure in high-threat maritime environments.

Related topic: U.S. Navy To Field More Than 30 Medium Unmanned Surface Vessels In Indo-Pacific By 2030 To Counter China.

U.S. Navy Medium Unmanned Surface Vessels will use modular payloads for sensing, command relay, deception, anti-surface warfare, anti-submarine warfare, and strike missions as the service plans a 72-vessel long-term force to support Distributed Maritime Operations (Picture source: U.S. DoW).

The procurement profile is unusually steep by naval acquisition standards. The Navy identifies 36 MUSVs in FY26 using One Big Beautiful Bill Act funding, followed by three in FY27, 10 in FY28, 10 in FY29, 12 in FY30, and 12 in FY31, for a 47-vessel FYDP total after FY26. The projected inventory rises from 39 vessels in FY27 to 49 in FY28, 59 in FY29, 71 in FY30, 83 in FY31, and 95 in FY32, before settling around a long-term steady state of 72 vessels after the first retirement cycle. Funding is carried under Other Procurement, Navy, rather than traditional shipbuilding accounts, a budget choice that suggests the Navy wants faster acquisition cycles, shorter service lives, and more room for design iteration.

The armament question is central, but the Navy has not publicly tied MUSV to a single missile, launcher, torpedo, sonar, or electronic warfare suite. The plan describes swappable, containerized payloads, including missile modules, anti-submarine warfare sensors and effectors, anti-surface warfare sensors and effectors, and C4I command modules. That wording matters: MUSV is not being presented as a small destroyer with a fixed vertical launch system, but as a mission-configured unmanned vessel able to accept containerized weapons or sensors as operational requirements change. In practical terms, a missile module could extend surface strike capacity; an ASW package could place acoustic sensors and effectors forward of a frigate; an ASuW payload could contribute targeting or engagement options against small combatants; and a C4I module could act as a relay between manned ships, unmanned vessels, aircraft, and shore-based command nodes.

The same payload concept is also intended to work across frigates, Littoral Combat Ships, MUSVs, and other naval vessels, which would reduce the penalty of building a payload only for one hull type. That gives the Navy a more flexible magazine and sensor model: a frigate could command several MUSVs carrying different mission packages, while an LCS could embark similar containers for coastal surveillance, mine-related missions, or electronic warfare. The operational point is that payload standardization could allow a commander to assemble a tailored force package by mission rather than by ship class, but only if the containers, power interfaces, cooling, data links, and command software are common enough to avoid bespoke integration before every deployment.

The Navy’s current MUSV experience rests on prototypes rather than a completed production class. Its official data identifies Sea Hunter and Seahawk as the first autonomous medium unmanned surface vessels operated by the service, both based in San Diego and originally developed through DARPA and the Office of Naval Research. The Navy lists them as approximately 41 meters long and 142.3 metric tons at full load, and states that they have operated as distributed sensors for manned ships in support of maritime domain awareness and anti-submarine warfare during events including Integrated Battle Problem 23.1, Integrated Battle Problem 23.2, and RIMPAC 2022.

A separate acquisition line began on July 13, 2020, when the Naval Sea Systems Command awarded L3 Technologies, Inc. a $34,999,948 contract for one MUSV prototype, with options that could raise the value to $281,435,446 for up to eight additional vessels. NAVSEA described the vessel as pier-launched, self-deploying, modular, and open-architecture, with autonomous navigation and mission execution supporting ISR, electronic warfare, distributed sensing, and situational awareness. This earlier contract is relevant because it shows the Navy’s baseline requirement before the 2026 plan: endurance, autonomous transit, payload flexibility, and integration with the Surface Development Squadron mattered more than a publicly declared weapon fit.

MUSV changes the geometry of a surface force. A carrier strike group or expeditionary strike group can push unmanned vessels ahead of the crewed force as radar pickets, acoustic nodes, electronic emitters, decoys, communications relays, or armed extensions of a frigate-led surface group. In wartime, this gives commanders options to probe a contested area without immediately exposing a destroyer or amphibious assault ship. In peacetime, it permits persistent surveillance of chokepoints, approaches to ports, and maritime gray-zone activity at lower personnel cost. The concept also creates tactical friction for an adversary: every MUSV contact must be classified, tracked, jammed, ignored, or engaged, and that consumes sensors, operators, weapons, and time.

The limitation is that MUSV’s combat value depends less on the hull and more on integration quality. An armed container has little operational effect without reliable target-quality data, secure control, electromagnetic resilience, cyber protection, rules for weapon release, and a sustainment system able to keep unmanned vessels at sea. ASW payloads face additional constraints because submarine detection depends on environmental data, sonar processing, quiet machinery, and coordination with helicopters, maritime patrol aircraft, submarines, and surface combatants. These are solvable engineering and operational problems, but they are not minor details. They are the difference between a useful distributed sensor and an unmanned contact that produces ambiguous data during a fast-moving engagement.

The industrial model is equally consequential. The Navy says MUSV acquisition will use Other Transaction Authority, recurring competitive evaluations, and the Portfolio Acquisition Executive for Robotics and Autonomous Systems to invite new shipyards and smaller yards into production. That could add capacity outside the major combatant shipyards and allow commercial autonomy, sensors, payloads, and hull designs to compete more frequently. It also creates oversight questions for Congress: unit cost, payload cost, autonomy maturity, attrition assumptions, maintenance demand, and battle force counting will need to be tracked separately, because a low-cost vessel can become expensive if mission packages, software updates, or support infrastructure grow faster than planned.

The broader strategic implication is that MUSV is one of the first unmanned naval programs sized to affect fleet employment rather than only experimentation. It will not replace submarines, destroyers, frigates, or carrier aviation, but it can redistribute sensing and some weapons carriage across a wider force. If the Navy delivers the planned inventory, certifies containerized armament, and proves reliable control in contested communications conditions, MUSV could become a measurable element of U.S. sea control. If those elements slip, the program risks becoming a large inventory of vessels awaiting payloads, software, or doctrine. The key judgment is that MUSV’s importance lies not in a single technical breakthrough, but in whether the Navy can turn modular unmanned vessels into repeatable, funded, and tactically credible combat formations.