On July 6, three significant defense acquisitions underscored a strategic shift toward undersea capabilities. Lockheed Martin committed $3.5 billion to acquire Ultra Maritime, a firm specializing in undersea weapons and sensor technologies. Thales Alliance secured a 36% stake in Exail Technologies, a French firm with revenue growth of 40% in Q1 2026, for long-term acquisition at an estimated $4.5 billion valuation. Italy’s Fincantieri invested nearly $700 million across four firms focused on unmanned maritime systems and undersea engineering.
These coordinated investments reflect escalating global demands for undersea dominance. While startups dominate innovation narratives, these legacy defense giants are prioritizing proven expertise in a domain increasingly critical to maritime security. The synchronized timeline suggests a response to heightened adversarial pressures in undersea warfare and defense technologies.
Threats to undersea infrastructure and operations have intensified. China’s deployment of surface and subsea sensors to map oceanic domains—part of a five-year, $42-vessel research initiative—threatens both strategic navigation and commercial activities. Analysts describe this as an “underwater Great Wall,” combining sensor networks, uncrewed systems, and data analytics to track undersea assets. Similarly, Russia’s use of GUGI submarines to target undersea cables and pipelines has disrupted critical Western infrastructure, leveraging capabilities matching U.S. deep-sea operations.
Asymmetric threats from smaller nations further complicate the landscape. The Strait of Hormuz, a vital chokepoint for global trade, has seen extensive mine deployments by Iran. The lack of effective mine countermeasures during this operation highlights gaps in Allied readiness. Mines remain a potent tool in hybrid warfare, capable of altering trade routes and military strategies with minimal resources.
Industry Adjustments
The July 6 acquisitions highlight a dual trend: legacy firms accelerating existing competencies and integrators acquiring established specialists. This mirrors past deals like Bollinger’s 2022 purchase of VT Halter Marine and Leidos’ 2021 acquisition of Gibbs & Cox, both aimed at strengthening market position through specialized capabilities.
Lockheed Martin’s Ultra Maritime purchase strategically expands its undersea warfare portfolio, complementing its existing sub-hunting and unmanned systems. Thales’ move into Exail Technologies—a leader in subsea solutions and mine countermeasures—addresses gaps in Thales’ own offerings. Fincantieri’s $700 million investment into firms like Next Geosolutions and Graal Tech emphasizes its ambition to become a full-spectrum player in underwater technologies, akin to its space-sector aspirations.
The operational context driving these deals includes Russia’s Black Sea campaign, which exposed vulnerabilities in unmanned naval systems, and China’s growing undersea assertiveness. These events have intensified demand for advanced mine countermeasures, autonomous vessels, and real-time underwater surveillance. Gulf nations, observing Iran’s actions, are likely to follow suit with increased maritime security investments.
Fincantieri’s CEO previously stated the company’s intention to “grow underwater capabilities” aggressively, comparing the market’s potential to aerospace. This reflects a broader defense industry pivot toward undersea domains, which offer strategic advantages in stealth operations, resource control, and asymmetric defense.
Aleksandar (Alek) Jovovic and Katy Buda contributed to this analysis as part of their roles at the Center for the Industrial Base, CSIS.