Subsea Defense News

© Advent

Cobham Ultra to Sell Ultra Maritime to Lockheed Martin

Cobham Ultra, a portfolio company of Advent, a leading global private equity investor, announced that it has agreed to sell Ultra Maritime, a worldwide leader in next-generation undersea warfare solutions, to Lockheed Martin, for $3.45 billion.Since acquiring Ultra Maritime in 2022, Advent has partnered closely with the management team to transform the business into a unified, mission-focused enterprise dedicated to advancing undersea warfare solutions. By integrating previously widespread capabilities, investing in both engineering and manufacturing excellence, and strengthening its global footprint

Navy Petty Officer 1st Class Andrew Turner conducts predive checks as Navy Petty Officer 2nd Class Giovanni Casteñeda prepares to test a Deep Sea Expeditionary with No Decompression suit during an exercise at Naval Undersea Warfare Center Division, Keyport, Wash., June 9, 2026. Credit: Scott Pittman, Navy

US Navy Tests Prototype Atmospheric Diving System

Naval Undersea Warfare Center Division, Keyport, Washington, hosted the first open water test of the Deep Sea Expeditionary with No Decompression suit in Liberty Bay, Washington, June 8-12.The atmospheric diving system is designed to protect divers from the crushing pressure of extreme ocean depths while eliminating the need for decompression. During the weeklong evaluation, three Navy divers piloted the prototype suit to the ocean floor. The event successfully simulated critical real-world Navy missions, including deep ocean salvage, underwater rescues, explosive ordnance disposal and ship hull

(Credit: Fincantieri)

Fincantieri Strikes Four Deals in $687M Underwater Expansion

Italian shipbuilder Fincantieri has agreed to acquire majority stakes in four companies for an initial expenditure of about $687 million (€600 million), expanding its capabilities in marine drones, subsea services and underwater communications across commercial and defense markets.The agreements cover acquisitions of majority stakes in Next Geosolutions, WSense, Graal Tech, and Defcomm, which will be integrated into Fincantieri’s Underwater technological hub.Next Geosolutions, listed on Euronext Growth Milan, provides marine survey and geoscience services as well as offshore construction

Kongsberg Secures Critical Infrastructure Protection Deal

Kongsberg has signed a contract with an unnamed international customer to deliver technologies for the protection of critical infrastructure.The project will focus primarily on underwater surveillance and protection, according to Kongsberg, which did not disclose the value of the contract.Critical infrastructure includes oil and gas installations, telecommunication cables, energy grids, ports and transportation networks.“Preventing and detecting threats and attacks are essential to protect people and critical infrastructure. Kongsberg has the solutions and technology to support countries and

© Danish Defense

German Prosecutors Charge Ukrainian in Nord Stream Blasts Case

German federal prosecutors said on Thursday that a Ukrainian national tied to the Nord Stream pipeline blasts has been charged with being an accomplice to a war crime, disruption of public services, causing an explosion and destroying structures.Serhii K, as the suspect is known under German privacy rules, is suspected of acting on behalf of Ukrainian government entities, along with other military personnel, to destroy the pipelines in 2022.The aim was to permanently halt gas deliveries via the pipelines and prevent Russia from using the revenue from natural gas trade to finance

The  Bayonet Underwater Controller (BUC) is paired with EOD Workspace software, is built on Greensea IQ’s Core open architecture software and is part of the broader Bayonet product offering. Image courtesy Greensea IQ

Greensea IQ wins $18m Navy Contract

, software, and engineering technical services for underwater controllers used to operate autonomous and remotely operated systems in maritime environments. This seven year, sole-source award, made under the authority of 10 U.S. Code 3204(a)(1) further establishes Greensea IQ as a trusted leader in subsea autonomous solutions for the Department of War. The Naval Information Warfare Center Pacific, San Diego, California serves as the contracting activity. “Greensea makes some of the industry's most mature robotic platforms and software suites,” says Bayonet General Manager, Fred

One of four Ocean Aero Triton autonomous underwater and surface vehicles displayed at the Philippine Navy’s Naval Operating Base Subic (Credit: U.S. Embassy in the Philippines)

US Supplies Autonomous Drones to Boost Philippine Maritime Surveillance

The United States has transferred four Ocean Aero Triton autonomous underwater and surface vehicles (AUSVs) to the Armed Forces of the Philippines to strengthen the country's maritime domain awareness and its ability to monitor and respond to maritime challenges.The delivery, valued at approximately $13 million, was completed on June 22 during a turnover ceremony at the Philippine Navy's Naval Operating Base Subic, attended by U.S. and Philippine military officials.The Triton systems are capable of collecting data above and below the ocean's surface through a resilient mesh network and can

U.S. Naval Oceanographic Office conducts a hydrographic survey by launching an unmanned surface vessel, supported by a Bahrain Coast Guard escort, in the U.S. Central Command area of responsibility. Credit: Official U.S. Navy photo

A Double-Sided Trident: Dual-Use Environmental Data Underpins Subsea Defense

also periodically go dark, or sometimes deliberately spoof their positions to conceal operations, particularly when operating in the waters surrounding Taiwan where detailed seabed imagery could inform submarine, amphibious assault, and mine warfare operations, as well as identify the locations of subsea cables that could be targeted during conflict.As the undersea domain becomes increasingly operationalized and contested, hydrographic survey will become more tightly and critically woven into subsea defense, and oceanographic research vessels, both crewed and uncrewed, will likely find themselves

Espen Henriksen, SVP Uncrewed Platforms KONGSBERG, and Drass CEO Sergio Cappelletti formalise the agreement with a handshake flanked by Sigurd Aksnes Fjerdingen (left), VP Products, Uncrewed Platforms at KONGSBERG, and Marco Bellomo, Technical Director at DRASS. © KONGSBERG

KONGSBERG, DRASS Partner for Underwater Solutions

A partnership between KONGSBERG and DRASS will support the exchange of technologies, systems, payloads, and operational architectures, combining the companies’ complementary industrial strengths, technical expertise, and operational experience to develop advanced underwater solutions.“Our goal is to develop highly capable, scalable, and interoperable underwater systems that meet changing operational and defense needs. This includes unmanned underwater vehicles (UUVs), maritime intelligence, surveillance, and reconnaissance (ISR) solutions, and manned-unmanned teaming (MUM-T),” says

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