Slow repairs, a new kind of clock, and the seabed in court

The panel is the International Advisory Body for Submarine Cable Resilience, convened jointly by the International Telecommunication Union, the United Nations agency for communications, and the International Cable Protection Committee, an industry group. It was set up in November 2024 with 42 members drawn from governments, cable operators and universities, and given a two-year term.[5] It approved its final report on 10 July 2026, during the ITU's WSIS Forum in Geneva.[1]

The stakes are easy to state. Submarine cables carry more than 99 percent of the world's intercontinental data traffic, a share that has only grown as the network stretched from roughly 1.5 million kilometres of cable in 2010 to about 2.7 million in 2024.[1][3] Faults are routine rather than dramatic. Around 200 occur each year, and most are accidents. Fishing gear and ship anchors account for roughly 86 percent of breaks, with earthquakes and seabed landslides a distant second.[3] The system is built to absorb this. What troubles the panel is how long the mending now takes.

Between 2012 and 2024 the average time to begin a repair more than doubled, from under 20 days to more than 50.[2] The intuitive culprit would be a shortage of ships. The report reaches a more uncomfortable conclusion. Repair volumes and the number of available vessels stayed broadly stable across those years, so the delay traces mainly to regulation. Permits to lay or mend a cable in national waters now take six to twelve months on average, which the panel calls the longest and most critical phase of any project.[2]

The recommendations follow from that diagnosis, and most cost little. Governments are urged to publish clear permitting rules, to name a single official contact for cable emergencies, and to keep 24-hour escalation lists so that a fault at three in the morning reaches someone who can act.[2][6] The report also presses for shared repair fleets, pooled spare cable and more diverse routes, so that no country leans on a single line. That last point is not abstract. The whole of Africa has one permanently stationed repair vessel, based at Cape Town, and many island and least-developed states depend on a handful of cables or fewer.[2]

The timing carries its own pressure. Industry analysts project that by 2040 around two-thirds of the world's cable-maintenance ships will have reached the end of their working lives, and that holding today's repair speeds could require roughly three billion dollars and twenty new vessels.[4] The advisory body's report is guidance, not law, and none of its recommendations binds any government.[1] Its value is quieter. More than 70 countries and much of the industry now converge on a single description of the problem, and on a shared language for fixing it, reached before a bad year forces the conversation.[2]

The heart of the machine is a rare form of thorium, thorium-229, whose nucleus has an unusually low-lying excited state that a laser can reach. Nudging the nucleus between its resting and excited configurations, the shift physicists call the isomer transition, takes deep-ultraviolet light at a wavelength of 148 nanometres, a frequency near 2,020 trillion cycles a second.[1] In the new work the researchers did not merely poke the nucleus and watch. They fed the nucleus's response back to the laser continuously, so the light stayed locked to the nuclear beat. That closed loop, the authors write, is the first time a nuclear clock has run as a standalone instrument rather than a one-off laboratory demonstration.[1] The result is a preprint, posted in early June and not yet peer reviewed.[1]

There is a reason to reach past the electrons to the nucleus. An atom's electrons sit exposed to stray electric and magnetic fields, which jostle their energy levels and blur the tick. The nucleus sits deep inside, screened by those same electrons, and largely ignores the outside world.[3] The thorium transition carries a second prize. Its energy rests on a near-cancellation between the electromagnetic and the strong nuclear forces, which makes it exquisitely sensitive to any drift in the fundamental constants that set those forces.[3] A clock like this could test whether the constants of physics truly hold fixed, and could serve as a listening post for certain models of dark matter.[3]

The Vienna clock is not yet the most precise timekeeper in the world, and its makers do not claim otherwise. Its rate wanders by about three parts in a trillion divided by the square root of the averaging time, settling toward a few parts in a thousand trillion after a day of running.[1] The best optical atomic clocks already hold steady near a part in a billion billion, roughly a thousand times finer. What matters here is the design. The thorium sits locked inside a calcium fluoride crystal rather than a floating cloud of trapped ions, which points toward a compact, rugged device that could one day leave the laboratory bench.[1]

The milestone caps a fast few years. In 2024 physicists first drove the thorium transition with a laser and pinned its frequency against an optical atomic clock.[4] This January a separate group showed that two differently prepared thorium crystals agreed on the transition to about one part in ten trillion over seven months, evidence that the nuclear tick is reproducible enough to build on.[2] The new feedback loop turns those measurements into something that behaves like a clock.[1]

The collaboration spans a Vienna technical university, Germany's national metrology institute and Austria's federal weights-and-measures office, a lineup that signals where this is headed.[1] A standalone nuclear clock is still a laboratory creature, delicate and far from any redefinition of the second. It is, even so, a working example of a genuinely new way to measure time, and the first of its kind to keep itself honest.

The claimants are two small companies with outsized ambitions. Nauru Ocean Resources Inc, sponsored by the Pacific state of Nauru, and Tonga Offshore Mining Ltd, sponsored by Tonga, filed matching claims on 30 May 2026 at the Seabed Disputes Chamber of the International Tribunal for the Law of the Sea. Both are subsidiaries of a single seabed-mining firm. The Convention on the Law of the Sea has always let a contractor sue the International Seabed Authority in this forum, yet until now none ever had.[6][5]

What pushed them there was an inquiry. In July 2025 the Authority's member states voted to examine whether the two contractors had honoured their obligations under the treaty. The timing was not incidental. Their parent company had begun pursuing a mining permit from the United States, which is not a party to the Convention, and in 2026 a US agency took up an application covering a stretch of the Clarion-Clipperton Zone, a swathe of the Pacific that overlaps the very areas the two firms hold under their international contracts. The Authority's secretary-general, Leticia Carvalho, has defended the review as what any reasonable regulator would do, adding that the seabed belongs to no single country and no corporation.[4]

The legal argument is narrow and procedural. The contractors say the Authority singled them out for special attention without a lawful basis, denied them fair notice and a real chance to respond, and so breached duties of due process, good faith and the treaty's own command that the regulator not discriminate among operators. They asked the Chamber to suspend the inquiry outright, to bar any findings from being published or relied upon, and to shield a pending request to extend one contract.[5][6]

On 18 July 2026 the Chamber gave an answer that split the difference. It declined to freeze the inquiry, the central relief the companies wanted. It ordered the Authority, unanimously, to conduct the review in step with due process, to give the contractors enough clarity about the procedure and the questions put to them, and to observe the same standard in weighing the contract extension. It told both sides to avoid any step that would aggravate the dispute. The Authority, for its part, stressed that the order does not prejudge the merits and that its inquiry remains in force.[3][1]

Strip away the seawater and the case resembles something more familiar, an investor challenging a regulator before an international tribunal. The likeness is imperfect, because the seabed regime exists to steward a common heritage rather than to protect investment, and the remedies here are declarations rather than damages. Yet the lever is the same. A regulated firm is using an outside court to discipline the conduct of the authority that governs it, at the exact moment that authority is still writing the rulebook that would permit the first commercial mine. How the Chamber reasons on the merits will shape who really holds power over the ocean floor.[6][2]