The Undersea Infrastructure
summary
Undersea cables carry 97% of internet traffic, with ~1,700 active cables and 100–200 faults per year; modern systems use repeaters about every 100 km, ships lay cable at ~10 km/h, and heavily armored sections can weigh nearly a ton per km. Example: the 6,600 km Dant cable (12 fibers, 250 Tb/s) costs $150–500M and is planned for 20–25 years. Repairs take weeks to months (Suez incidents 3–6 months, Tonga outage ~18 months) and use ROVs and splice ships.
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chapters (18)
- 0:00Introduction and background
- 3:07History of undersea cables
- 7:44Undersea oil pipelines
- 9:51Telephone cables and technology
- 11:16Internet traffic under the sea
- 12:19Fiber optic cable manufacturing
- 16:54Cable design and armor levels
- 18:38Google’s Dunant cable project
- 20:24Cable laying process
- 21:32Shore connections and landing stations
- 23:15Cable damage and repair methods
- 26:41Choke points and cable vulnerabilities
- 28:05Recent cable sabotage incidents
- 33:27Cables in the Taiwan Strait
- 33:48Tonga eruption and cable damage
- 37:00Military undersea infrastructure
- 38:25Future of undersea cables
- 39:49Conclusion and importance of infrastructure
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