British shipbuilder Babcock is preparing to offer its Arrowhead 140 frigate design to the US Navy, potentially opening a new chapter in Anglo-American naval cooperation as Washington seeks to accelerate warship production and overcome persistent shipbuilding bottlenecks.
British defense company Babcock is preparing to pitch its Arrowhead 140 frigate design to the United States Navy, seeking to capitalize on a major shift in Washington’s naval procurement policy that allows greater consideration of foreign warship designs from allied countries.
The proposal would offer the United States a British-designed alternative as the US Navy attempts to expand its surface fleet, address shipyard capacity constraints and accelerate the delivery of smaller combat vessels following years of delays and rising costs.
Arrowhead 140 is the parent design of the Royal Navy’s Type 31 Inspiration-class frigate. Babcock has already held preliminary discussions with Pentagon officials and is reportedly preparing to submit an expression of interest by the end of October 2026.
“Of course we’re interested. We have a world-class frigate, close links to the U.S. and U.S. industry. It would be insane for us not to respond,” Sir Nick Hine, head of Babcock’s marine business and a former Second Sea Lord, was quoted as saying by The Telegraph.
The proposal comes as the administration of US President Donald Trump seeks to rebuild what it has described as the “arsenal of freedom,” placing greater emphasis on the speed and scale of American defense manufacturing.
Under a national security memorandum issued in August 2026, the US Navy was given greater flexibility to consider foreign warship designs and overseas construction as part of efforts to overcome delays, cost overruns and limited domestic shipbuilding capacity.
For Babcock, the policy change presents an opportunity to expand the international reach of its frigate design while strengthening its position in the US defense-industrial market.
The potential bid is reportedly being developed in cooperation with Huntington Ingalls Industries (HII), one of the largest military shipbuilders in the United States.
The companies are exploring arrangements that could allow Arrowhead 140 frigates to be manufactured under license in American shipyards, combining British design expertise with US industrial capacity.
Under the reported procurement framework, foreign shipbuilders would be expected to invest in or take a majority stake in an American shipyard. After the first two vessels were constructed overseas, subsequent ships would be built in the United States.
Such an arrangement would allow the US Navy to adopt an existing foreign design without permanently shifting the bulk of its shipbuilding workload abroad.
Babcock could provide the underlying design, engineering knowledge and technical support, while American facilities would eventually undertake most of the construction.
The model would also align with Washington’s broader objective of strengthening domestic shipbuilding capacity rather than relying indefinitely on foreign production.
However, the precise terms of any Babcock-HII arrangement, including the scale of investment, licensing conditions and division of manufacturing responsibilities, have not been publicly established in the information available.
Babcock already has experience working with the American submarine industrial base. Its facilities have produced tactical missile tube assemblies for General Dynamics Electric Boat since at least 2014 as part of the Common Missile Compartment program.
The compartment is shared by the US Navy’s Columbia-class ballistic missile submarines and the Royal Navy’s future Dreadnought-class submarines.
The existing industrial relationship provides a foundation for further cooperation, although supplying submarine components is substantially different from establishing a production line for complete surface combatants.
The Arrowhead 140 proposal comes as the US Navy seeks a faster route to acquiring smaller surface combatants.
The troubled Constellation-class frigate program was canceled in November 2025 after persistent concerns over schedule, cost and design complexity. Its cancellation left the Navy seeking alternatives that could deliver operational capability more quickly.
The United States currently has no dedicated frigates in active service, following the retirement of its Oliver Hazard Perry-class frigates. Although the Navy operates other surface combatants, including destroyers and littoral combat ships, a modern frigate would provide a different balance of cost, endurance, escort capability and operational flexibility.
The revised procurement approach has reportedly brought several allied designs into consideration.
These include Japan’s Mogami-class guided-missile frigate, South Korea’s Chungnam-class guided-missile frigate and Turkey’s Istanbul-class frigate. If Babcock formally submits its proposal, Arrowhead 140 would add a British contender to the emerging competition.
Each design offers a different combination of weapons, sensors, construction experience and industrial arrangements.
For Washington, the central question is not simply which frigate has the strongest specifications. The Navy must also determine which design can be produced rapidly, integrated with American weapons and communications systems, and supported over decades of service.
The ability to manufacture vessels at scale in US shipyards could prove as important as their combat capabilities.
Arrowhead 140 was developed as a general-purpose frigate with an emphasis on endurance, adaptable internal space and relatively straightforward construction.
The baseline design measures approximately 455 feet in length, has a beam of around 65 feet and displaces about 5,700 tonnes.
Its maximum speed exceeds 28 knots, while its endurance is designed to support deployments lasting roughly one to two months, depending on operating conditions and mission requirements.
The vessel incorporates a large flight deck and hangar, providing space for helicopter operations. Dedicated boat bays can accommodate rigid-hulled inflatable boats and other small craft, with provisions for unmanned aerial vehicles and additional mission equipment depending on the configuration.
The design’s open architecture and generous internal volume are intended to make it adaptable to different customers without requiring major structural modifications.
Its potential weapons configuration includes a medium-caliber naval gun of up to 127 millimeters, secondary guns of around 40 millimeters, anti-ship missiles and close-in weapon systems.
The design can also accommodate a vertical launch system, with provision for up to 32 cells in relevant configurations, alongside a combat management system, three-dimensional air or surface-search radar and electro-optical sensors.
For underwater warfare, the ship can be equipped with hull-mounted sonar, with options for towed-array or variable-depth sonar systems.
These features could make Arrowhead 140 suitable for escort missions, surface warfare, maritime security, patrol operations and selected anti-submarine warfare tasks.
However, these specifications describe the design’s potential rather than a single standardized operational configuration. Actual weapons, sensors and mission systems would depend on the customer’s requirements, integration decisions and procurement budget.
For the US Navy, integrating American combat systems, weapons and communications equipment would be a major part of any acquisition process.
The final cost and delivery schedule would also depend on the extent of redesign required to satisfy US Navy standards.
A successful British offer would represent a notable development in the naval relationship between Washington and London.
The two countries have long maintained close defense ties, but the United States has traditionally been regarded as the dominant naval power, with extensive domestic shipbuilding and advanced warship design capabilities.
During the Second World War, one of the most significant naval transfers between the countries proceeded in the opposite direction.
On September 2, 1940, US President Franklin D. Roosevelt announced the destroyers-for-bases agreement with Britain.
Under the arrangement, the United States transferred 50 aging destroyers to the Royal Navy in exchange for 99-year leases on eight British-controlled bases in the Western Hemisphere.
Britain was then fighting for survival against Nazi Germany, facing the threat of invasion after the fall of France and during the Battle of Britain. The United States had not yet entered the war.
British Prime Minister Winston Churchill had requested American destroyers to strengthen Britain’s ability to defend its maritime approaches and counter the threat of German invasion.
The vessels transferred included older Caldwell-, Wickes- and Clemson-class destroyers.
The agreement became an important step in expanding Anglo-American strategic cooperation before the United States formally entered the war in December 1941.
Churchill subsequently emphasized the mutual advantages of closer cooperation between the two countries, describing how their institutions would become more closely intertwined in pursuit of shared interests.
More than eight decades later, Babcock’s proposal would reflect a different form of cooperation: Britain offering a warship design to a United States Navy seeking to strengthen its own shipbuilding system.
The comparison is not exact, given the vastly different strategic and industrial circumstances, but it highlights the changing nature of the defense relationship.
Despite Arrowhead 140’s potential, the proposal carries a significant qualification: the Royal Navy’s Type 31 program has yet to demonstrate the design’s performance in operational service.
The Type 31 was conceived as a relatively affordable replacement for five older Type 23 frigates, particularly in general-purpose roles that do not require the full capabilities of more specialized high-end warships.
Its intended missions include maritime security, presence operations, escort duties and deployments in support of wider naval activities.
The program emphasizes modularity, endurance and the ability to adapt the ships to changing requirements. However, it has encountered delays, cost pressures and criticism over its delivery record.
The lead ship, HMS Venturer, was launched in 2025 and is undergoing fitting-out. The second vessel, HMS Active, has been rolled out, while the keel of the third ship, HMS Formidable, was laid in December 2025. Steel has also been cut for the fourth vessel.
Although construction continues, the program has experienced schedule slippage and additional work associated with design changes and the sequence in which ships were assembled.
The first two vessels are also expected to undergo a Capability Insertion Period after initial delivery, including the installation of Mk 41 vertical launch systems. This means that delivery and the achievement of the intended operational capability are not necessarily the same milestone.
In May 2026, Babcock declared a £140 million charge against the program, attributing the additional costs to higher-than-anticipated rework on HMS Venturer and HMS Active. Design modifications and out-of-sequence construction activity early in the program contributed to the problem.
The British Ministry of Defence has also acknowledged inflationary pressures affecting labor and the wider supply chain.
Defence Minister Luke Pollard has said the program’s affordability remains under review, leaving uncertainty over the financial outlook for later ships.
Questions have also been raised about the Type 31’s combat configuration. Although the design is intended to be flexible, the delayed installation of key weapons systems and the comparatively limited initial anti-submarine warfare fit have prompted debate over whether the baseline ships will provide sufficient capability for the demands of modern naval operations.
Critics argue that affordability and modularity will have limited value if important capabilities arrive late or require expensive upgrades after delivery.
These concerns could complicate Babcock’s efforts to persuade American officials that Arrowhead 140 offers a mature, low-risk solution.
The US Navy would need to assess not only the underlying design but also the performance of the British program, the feasibility of American production and the cost of adapting the vessel to US requirements.
Winning a US Navy contract would provide Babcock with a major international endorsement for Arrowhead 140 and potentially strengthen the long-term prospects of the Type 31 program.
It would demonstrate that the design could attract interest beyond its existing export markets, which include Poland and Indonesia, while Babcock is also pursuing opportunities in Chile.
A US partnership could create opportunities for licensed production, engineering support and a broader industrial relationship with one of the world’s largest defense markets.
It could also help Babcock answer domestic criticism by demonstrating that its design is sufficiently adaptable to meet the requirements of a demanding naval customer.
Nevertheless, the United States has alternatives. Japan, South Korea and Turkey can offer established frigate designs, while American officials must weigh combat performance against delivery schedules, domestic investment and long-term support.
A foreign design would still require careful evaluation, and adopting one would not automatically resolve the US Navy’s shipbuilding problems.
For Babcock, the opportunity is therefore both commercial and strategic. The company is seeking to persuade the world’s most powerful navy that an existing British design can help address an urgent American capability gap.
Whether Arrowhead 140 succeeds will depend on its ability to demonstrate that its flexibility and production potential outweigh concerns about the Type 31 program’s delays, costs and incomplete operational record.
A successful bid could mark a major milestone in Anglo-American defense-industrial cooperation. Rejection, particularly in favor of an Asian competitor, would leave Babcock facing a more difficult task in convincing critics at home that the Arrowhead 140 offers the right balance of affordability, capability and reliability.
