In spring 2026, Britain, Norway, and america tracked and disrupted a covert Arctic train off the coast of Norway involving Russian deep-sea submersibles simulating the deployment of a weapon designed to disable the 2 1,400-kilometer submarine cables linking the islands of Svalbard to mainland Norway. Svalbard hosts a satellite tv for pc floor station serving Europe, america, and Japan. This encounter revealed that NATO allies can detect a covert subsea operation and, if caught in time, disrupt it.
Had it been an actual assault, the primary query would have been the place and the way rapidly web and delicate authorities site visitors may very well be rerouted. However this requires grappling with who will restore the cables, how rapidly, and what would occur if further cables in different theaters have been reduce earlier than the primary restore was full. To successfully disrupt world communications, an adversary wants solely to wreck cables in a number of areas sooner than the restore system can restore them.
New cable routes being developed to keep away from geopolitical choke factors face further restoration challenges. Nordic analysis networks are planning a ten,000-kilometer Polar Join cable from Sweden throughout the Arctic Ocean to Japan and North America, a route meant to offer another path to the Pink Sea. Its deliberate route runs near Svalbard. The route will go by way of the identical waters the place Russia not too long ago rehearsed disrupting cables.
In 2017, Adm. (ret.) James Stavridis warned within the foreword to a Coverage Alternate report by future U.Ok. Prime Minister Rishi Sunak, “It’s not satellites within the sky, however pipes on the ocean flooring that type the spine of the world’s economic system. … We have now allowed this important infrastructure to develop more and more susceptible and this could fear us all.” Since 2020, the Federal Communications Fee has applied robust insurance policies round submarine cable possession and provider screening. However america has no wartime restore and restoration technique for a marketing campaign of simultaneous cable failures throughout a number of theaters.
Wartime submarine cable restore needs to be handled as a nationwide safety mission and funded as such. The designation of submarine cables as essential infrastructure, the institution of a federal coordinating authority with emergency powers to prioritize repairs, and an elevated finances to broaden the Cable Safety Fleet would give america a technique to determine which cables are repaired first and which ships are wanted to hold out these selections.
Vulnerability within the Restore Queue
Cable faults are routine. Fishing gear, anchors, and different accidents injury submarine cables roughly 150 to 200 instances yearly, a quantity simply dealt with by the roughly 22 ships on the planet outfitted to restore subsea cables. Underneath regular circumstances, this method works nicely; whereas one cable is beneath restore, operators reroute site visitors over spare capability on different paths. However a number of faults without delay can exhaust that spare capability and clog the queue for restore ships. The Hunga Tonga–Hunga Ha’apai eruption of 2022 prompted an underwater landslide that remoted the island nation of Tonga for 5 weeks, with full restoration taking nearly 18 months. And in February 2023, 5 of Vietnam’s worldwide cables have been broken inside a quick time-frame, with full restoration occurring 9 months later.
Restore functionality additionally relies on a number of components: entry: ship location, its flag, who legally controls it, a educated crew, whether or not it may be insured in a battle zone, and the supply of spare cable and elements. The Pacific illustrates the danger. Repairs there are coordinated by way of the Yokohama Zone upkeep settlement, which depends on three operators, together with S.B. Submarine Programs, a Shanghai-based cable set up and upkeep firm that’s majority owned by China Communications Companies, whose controlling shareholder is state-owned China Telecommunications Company. It has repaired cables owned by Google and Meta. U.S. officers have raised safety considerations about American dependence on Chinese language restore vessels. In a battle involving China or Taiwan, america couldn’t safely assume continued entry to Chinese language-controlled restore capability. Beijing wouldn’t have to sabotage something. It may merely decline to sail and restore.
The USA doesn’t have a government-operated restore ship, for the reason that Navy cable ship Zeus was formally deactivated in 2025 after 4 a long time of service. As a substitute, the Cable Safety Fleet is allowed at $10 million yearly for funds to the operator of two privately owned ships to make them out there to the Division of Protection when requested. This offers a minimal assured functionality for repairing an remoted failure however does little for simultaneous cuts throughout a number of theaters. A contract with two ships just isn’t the identical as having two ships instantly out there to sail. Since they function commercially, these ships might be contracted to work removed from their assigned ocean. For instance, in 2022, the cable ship Reliable spent a month within the Indian Ocean laying a cable to the Naval Help Facility in Diego Garcia, removed from its protection space of the Pacific.
Much less mentioned is the criticality of the subsea cable provide chain. A restore ship is simply as helpful because the spares it carries: jointing kits, repeaters, and cable that matches the system being repaired. These elements are usually not interchangeable and never at all times available. Most of Tonga’s 18-month wait went to confirming specs, then manufacturing and delivery the correct substitute cable from France. U.S. coverage can be narrowing the provider pool. In 2025, the Federal Communications Fee barred tools on its Coated Checklist of nationwide safety dangers from U.S.-connected cable methods, and the Fee’s Third Report and Order banned gadgets containing Coated Checklist elements. A wartime restoration technique subsequently requires stockpiling trusted spares earlier than they’re wanted.
Europe has begun addressing this downside. In 2026, the European Union allotted €60 million (or about $70 million — €20 million for the Baltics, €40 million for the Mediterranean and Atlantic) for modular cable restore tools to be pre-positioned at ports and shipyards. These might be quickly put in on vessels pre-configured to obtain the module. The USA has no equal.
Restore Underneath Fireplace
In armed battle, a vessel or cable can grow to be a lawful navy goal if the focusing on standards are met. The Second Geneva Conference protects hospital ships however says nothing about cable ships, whose authorized and operational threat can change relying on how they’re used throughout hostilities. The 2025 Newport Guide on the Regulation of Naval Warfare treats navy communications cables as navy aims. Nevertheless, in observe, it’s troublesome to differentiate navy communications cables from industrial ones as a result of navy and authorities communications usually journey over industrial cable methods.
In a 1923 arbitration, Cuba Submarine Telegraph Firm (Nice Britain) v. United States, a tribunal rejected a British firm’s declare for cables the U.S. Navy reduce in Cuban waters through the Spanish-American Warfare, discovering the corporate functioned as a Spanish public service. The identical logic may apply immediately to a industrial cable that carries navy site visitors. Cable restore ships are important to restoring each navy and civilian communications however may grow to be navy targets as a result of they don’t have any immunity from assault. As Douglas Burnett, former authorized adviser to the Worldwide Cable Safety Committee, has argued, cables and restore ships stay reputable targets in a battle.
Insurance coverage compounds the issue, as a result of battle protection might be canceled on as little as 72 hours’ discover. After U.S. hostilities with Iran started on Feb. 28, 2026, main insurers issued cancellation notices for war-risk cowl for ships within the Persian Gulf inside days. By early March, seafarer unions and employers designated the Strait of Hormuz, the Gulf of Oman, and the Persian Gulf a Warlike Operations Space, giving crews the correct to refuse to sail there. Though some insurers introduced again restricted, costly war-risk protection, the Congressional Analysis Service famous that ship homeowners have been nonetheless reluctant to place crews in hurt’s approach no matter whether or not insurance coverage was out there.
Restore and restoration in contested waters can’t be handled as a purely industrial service. For instance, within the 2024 Pink Sea incident by which Houthi rebels struck the Rubymar and dragged its anchor throughout three cables, full repairs took about six months, delayed by safety considerations and a political dispute in Yemen over who may grant restore permits. Restore conditions equivalent to this cross industrial, civilian, and navy authorities, which complicates operations. complicating operations.
This downside is exacerbated if a reduce is deliberate, as a result of the restore ship may grow to be a goal. Since cables carry navy and civilian site visitors, it’s unclear whether or not a restore ship serves a navy or a civilian function. A naval escort would settle that query, however not within the ship’s favor. Underneath the regulation of naval warfare, a service provider ship crusing beneath convoy of a belligerent’s warships could also be handled by the opposite aspect as a navy goal. For a industrial ship repairing industrial cables, that price is actual: with out an escort, it would hold its civilian standing. For the ships america would depend on most, the fee is smaller. A ship beneath a Division of Protection contract restoring cables that carry navy site visitors is probably going already a navy goal, escorted or not, as a result of it’s contributing to navy motion. Under the extent of armed battle, an escort deters interference with out the authorized threat. If crews and insurers won’t sail unprotected, the choice to an escorted restore could be no restore in any respect. Safety ought to subsequently depend upon whose ship it’s and what it’s repairing: shut escort for ships beneath authorities contract, and space safety at a distance for purely industrial ones.
The Peacetime File Is Deceptive
The strongest objection to altering the method to restoration is that the industrial restore system simply handles 150 to 200 annual faults, and web suppliers have spare capability. However whereas the variety of faults has remained flat, the variety of cables and the lengths of recent cables are rising, complicating repairs. Clusters of near-simultaneous failures equivalent to in Vietnam and Tonga resulted in restoration instances stretching to months. Injury that could be deliberate is tough to differentiate from an accident. Such incidents have already occurred within the Baltic, the place a Russia-linked tanker dragged its anchor throughout 5 cables in 2024, in addition to close to Taiwan, the place a Chinese language fishing boat and a Chinese language freighter reduce each cables to the Matsu Islands six days aside in 2023. And battle has already difficult repairs within the Pink Sea and within the Gulf. What has not occurred but is clustered failures, sabotage, and battle unexpectedly, a mix a wartime marketing campaign may produce. A restore system sized for the speed of present accidents just isn’t constructed to face up to an adversary that has discovered to make assaults appear like accidents.
A second objection is that low Earth orbit satellites can present a backup. Whereas they will hold some websites linked, they continue to be an entry know-how, not a spine, and can’t change the capability of the cables they might be backing up. Satellite tv for pc networks additionally depend upon floor stations which can be themselves linked by cable, and their indicators might be jammed.
Adversaries are already constructing the means to chop cables intentionally. The Svalbard incident and information of China’s superior deep-sea cable reducing machine exhibit that they’re creating and testing this in areas which can be difficult to restore. Russia’s Fundamental Directorate of Deep-Sea Analysis operates no less than eight nuclear-powered special-mission submarines, together with floor ships such because the Yantar, which carries submersibles able to reaching depths of 6,000 meters (20,000 ft). Shadow fleet vessels may also be used to wreck cables by dragging anchors, a standard explanation for cable faults. Strategic, closely trafficked choke factors in geopolitically contentious areas with dense concentrations of cables, such because the Suez Canal/Bab al-Mandeb Strait, Strait of Hormuz, and the South China Sea, present a straightforward setting for a number of cuts which can be exhausting to attribute. Moreover, an adversary may capitalize on naturally occurring faults, equivalent to underwater landslides that will injury a number of methods on the similar time, additional stressing a restore system that’s sized for “routine” cable faults.
How massive would a marketing campaign should be? Contemplate Taiwan, the place 15 worldwide cables come ashore at 4 touchdown stations. When an earthquake off its east coast on the finish of 2025 disrupted six of them, repairs took till Might 2026. Taiwan sees seven to eight cable incidents a yr, with dragged anchors the main trigger. Chinese language vessels working close to Taiwan routinely swap off their location transponders. Slicing six cables intentionally, close to shore the place anchors can attain them, would require comparatively few vessels. For instance, a single tanker, the Eagle S, broken 5 submarine cables within the Gulf of Finland in December 2024.
Repairs in a second theater would compete for a similar few ships. The Pink Sea cuts described above affected an estimated one quarter of the site visitors between Asia, Europe, and the Center East. Taiwan sits between the Yokohama and Southeast Asia restore zones. With a world cable restore taking a couple of month even in peacetime, a handful of ships going through 9 faults throughout two theaters would want months to revive them.
Options
First, the Division of Homeland Safety ought to formally designate submarine cables as a essential infrastructure subsector beneath the Communications Sector. Submarine cables span the Communications and Info Know-how sectors, that means no single company owns and leads their restoration.
Second, Congress ought to designate a federal operational coordinator for submarine cable restoration with emergency authority to prioritize restoration when outages have nationwide safety and financial penalties. It ought to sit within the Division of Homeland Safety, whose Nationwide Coordinating Middle for Communications already coordinates the restoration of communications networks in emergencies. Restoration priorities ought to weigh the significance of navy communications, monetary networks, and cloud and data-center connectivity towards the supply of redundant routes. That authority ought to embrace utilizing Protection Manufacturing Act precedence scores for spares, which requires reauthorizing past Dec. 11, 2026.
Third, fund the Cable Safety Fleet on a multiyear foundation, broaden it past two ships, and fund depots of spare cable elements. The present annual authorization for the fleet is $10 million for 2 ships. Doubling the fleet to 4 retained ships would elevate the annual price to round $20 million. But the Maritime Administration requested no funding for it in fiscal yr 2027. With the latest decommissioning of the Navy cable ship Zeus, america ought to fund the procurement of a devoted new cable restore ship, which prices between $52 million and $100 million to construct and roughly $12 million to 14 million a yr to run. Retained industrial ships are cheaper, however they could be on the opposite aspect of the world when known as upon. A government-owned ship might be stored in a theater the place it’s wanted.
This initiative needs to be paired with a government-funded and government-held stock of spares freed from Coated Checklist elements, pre-positioned at U.S. and allied ports. Utilizing the European Union’s €60 million program as a benchmark, a listing of spares protecting the Pacific and Atlantic would price no less than as a lot. Taken collectively, a brand new ship, a doubled fleet, and a spares stock would price roughly $120 million to $170 million initially, and about $35 million a yr to maintain. That is lower than half of the €347 million (about $388 million) the European Union dedicated this yr to cable tasks beneath a single program. Moreover, the Maritime Administration ought to create pre-arranged procedures for activating war-risk insurance coverage protection for the fleet’s ships earlier than a disaster. If industrial war-risk insurance coverage is terminated, the company may rapidly provide government-backed protection for each the ship and its personnel.
Fourth, set up a graduated framework for safeguarding restore operations in contested waters. Restore ships ought to stay beneath industrial management till there’s a credible risk to them. At that time, america and its allies ought to escort ships working beneath authorities contracts, that are probably navy aims already, and supply safety for industrial ships with out inserting them beneath convoy. A reputable risk would come with the withdrawal of war-risk cowl, a warlike operations designation for an space, or an specific adversary risk towards cables. The federal coordinator proposed above ought to determine when that threshold has been met. The USA must also negotiate preparations with allies, together with command relationships, guidelines for escort, authorized evaluate, port entry, and allied duties, for restore operations in contested waters earlier than a disaster.
Fifth, streamline the end-to-end course of to construct further cable routes. The Federal Communications Fee’s 2025 order streamlined federal licensing, however developing a brand new touchdown requires separate approvals from the Military Corps of Engineers, the Nationwide Oceanic and Atmospheric Administration if routes cross marine sanctuaries, state coastal businesses, and native zoning boards. The federal coordinator proposed above ought to oversee this course of.
Business operators deal with adversarial campaigns as a distant risk. Nevertheless, navies have lengthy handled cables as targets. The U.S. Navy reduce the telegraph cables serving Spanish Cuba in 1898, and through the Chilly Warfare, in an operation code-named Ivy Bells, america tapped a Soviet navy cable within the Sea of Okhotsk. The Svalbard interception exhibits that America’s adversaries are rehearsing for covert undersea operations in waters the place repairs are hardest. The USA has spent years deciding who could personal, construct, and function subsea cables. It now must reply a less complicated query: Who repairs the web in wartime?
Anita Nikolich is a analysis scientist on the Faculty of Info Sciences on the College of Illinois Urbana-Champaign.
Andrew Gallo is a senior community architect on the George Washington College.
Picture: Lewis Clarke by way of Wikimedia Commons
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