The Cables Under the Ocean: Who Owns the Internet's Spine
Over 99% of the data that crosses between continents never touches a satellite. It rides glass threads on the ocean floor — owned by two American giants, built by three companies, and landed at chokepoints a dragging anchor can reach. This is the map of the internet's spine.
Key findings
- The internet is not wireless. It is not even mostly in the sky. Undersea cables carry more than 99% of intercontinental data connectivity; the world counts 694 cable systems and 1,893 landing stations (TeleGeography Submarine Cable Map 2026). About 200 faults occur each year — 70 to 80% of them accidental — and some 60 repair ships serve the entire planet. ICPC; TeleGeography 2026
- Three builders lay roughly a third of the world each. Alcatel Submarine Networks of France, SubCom of the United States and NEC of Japan form the turnkey oligopoly — manufacture, deployment and maintenance under one roof. sdxcentral
- France nationalized its cable builder in January 2025. The state's Agence des participations de l'État acquired 80% of ASN — the deal finalized December 31, 2024 and announced complete on January 6, 2025 — at a €350 million enterprise value; Nokia keeps 20%. The company: 800,000+ kilometres of systems, 7 cable ships, ~2,000 employees, HQ at Les Ulis, Paris-Saclay. Its CEO is Alain Biston. (Nokia had acquired it through Alcatel-Lucent in 2016.) sdxcentral; thehyperscalers.com
- The American builder belongs to a private-equity fund. Cerberus bought SubCom from TE Connectivity for $325 million in cash, closing in November 2018. The company: 610,000+ kilometres deployed, 8 cable ships, 1,400-plus staff at Eatontown, New Jersey. Its CEO is David Coughlan. Capacity/ConvergeDigest; SubTel Forum
- Meta announced the longest cable ever planned. Project Waterworth, unveiled February 14, 2025: 50,000-plus kilometres, five continents, 24 fiber pairs, a multi-billion-dollar, multi-year investment — the world's longest subsea system, and it is private, not a consortium. Meta had already built 20-plus cables in the preceding decade. SubTel Forum
- Google holds about 33 investments in subsea cables. Dunant — 250 Tbit/s, 6,600 km, Virginia Beach to Saint-Hilaire-de-Riez, live since September 2020 — was built by TE SubCom; Equiano runs 15,000 km with 12 fiber pairs; Nuvem (384 Tbps, 16 pairs) was lit in 2026. submarinenetworks.com
- 2Africa's core is complete. The 45,000-plus-kilometre system reached its core milestone on November 20, 2025: 33-plus countries, 180 Tbps of design capacity, eight partners — China Mobile International, Bayobab, center3, Meta, Orange, Telecom Egypt, Vodafone and WIOCC — on an open-access model. PRNewswire
- The chokepoints are on land, not at sea. Thirteen of India's 18 intercontinental cables land inside a 6-kilometre stretch of beach at Mumbai's Versova. The Red Sea corridor, Egypt's Mediterranean landings, Marseille, Singapore, Virginia Beach: a handful of addresses carry the world's traffic. singaporenewstribe.com; TeleGeography
- February 2024 showed what happens when one breaks. Four cables — AAE-1, EIG, Seacom and TGN Atlantic — were severed in the Red Sea; roughly 25% of Asia–Europe traffic was affected (HGC Global Communications) and more than 100 million people across West and North Africa felt it. The cause: the dragging anchor of the stricken vessel Rubymar. sofx.com; DataCenterKnowledge; SubTel Forum
- The head map is short. ASN → Alain Biston, under the French state. SubCom → David Coughlan, under Cerberus. NEC → Japan Inc. The hyperscale layer → Meta (Waterworth) and Google (33-plus systems). Five doors, and the keys fit in very few pockets. Bureau analysis
The internet has a body, and the body is glass.
Forget the cloud. The cloud is a building in Virginia and a building in Singapore, and between the two buildings lies seven thousand kilometres of fiber-optic cable on the ocean floor — thinner than a garden hose, carrying more data in a second than the entire printed collection of every library on Earth.
Every email, every trade, every drone feed, every central bank's settlement: over 99% of intercontinental data connectivity rides these threads, according to the International Cable Protection Committee. Satellites carry the rest — the crumbs. The spine of the digital century is wet.
The spine
TeleGeography's 2026 submarine cable map counts 694 cable systems and 1,893 landing stations. The numbers sound like abundance until you look at where they concentrate — but first, the fragility, because it is ordinary rather than exotic.
About 200 faults a year, per the ICPC. Seventy to eighty percent are accidents: fishing trawlers, ships' anchors, undersea earthquakes. The planet is served by roughly 60 cable-repair ships — a floating ambulance fleet smaller than most countries' coast guards — and a repair in deep water can take weeks. The internet's spine is repaired by a few dozen vessels most people have never heard of.
This is the baseline against which everything else in this investigation should be read: the world's most critical infrastructure, guarded mostly by the hope that nobody drops an anchor in the wrong place.
The owners
There was a time when cables were consortiums of telephone companies. That time is ending. The builders now build increasingly for two customers: Google and Meta.
Google holds investments in some 33 subsea cables, per the industry's submarine-networks database — the largest private portfolio on the planet. Dunant, its transatlantic system (250 Tbit/s, 6,600 kilometres, Virginia Beach to Saint-Hilaire-de-Riez in France), went live in September 2020; it was built by TE SubCom — the American builder now owned by a private-equity fund. Equiano runs 15,000 kilometres down Africa's west coast with 12 fiber pairs. Nuvem — 384 Tbps, 16 pairs — was lit in 2026. Google does not buy capacity on other people's cables the way it used to. It lays its own.
Meta had already built more than 20 cables in the preceding decade when, on February 14, 2025, it announced the one that ended the consortium era for good: Project Waterworth. Fifty thousand-plus kilometres. Five continents. Twenty-four fiber pairs. A multi-billion-dollar, multi-year investment — the longest subsea cable system ever planned, and it belongs to one company. Not a consortium. Not a club. A private road across the ocean floor, owned by the company that owns the conversations.
The motive is not mysterious: whoever owns the cable owns the latency, the capacity and the repair priority. In the AI decade, bandwidth is the new oil field — and the hyperscalers have decided to own the wells.
Chart 1 · Scale
The spine, measured in kilometres
Deployed or committed system length · company and industry disclosures, 2025–2026
This investigation continues for members
You have read the key findings, the spine, and the owners. The rest of the investigation — the part that makes it an investigation — is behind the lock.
- The builders: ASN's nationalization, SubCom's private-equity ownership, and NEC's quiet third
- The chokepoints: thirteen cables on six kilometres of beach, and what severed the Red Sea
- The head map: every owner named, every ship counted — plus the consensus ledger and the full 18-source annex
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