What the damaged Svalbard cable looked like

Original Article ↗ Hacker News Discussion ↗

Likely Cause of the Cable Damage

  • Many commenters think a trawler is the most plausible cause, noting anchors and trawls are a common source of subsea cable damage.
  • NRK reporting that a Russian trawler crossed the Svalbard cable ~140 times, including multiple times right before the break, fuels suspicion of that specific vessel; shipowners deny involvement.
  • Some argue this could still be intentional state activity, as “trawlers” have historically doubled as cover for military/intelligence operations.
  • Others counter that trawler zig‑zag patterns can be normal fishing behavior and say there’s insufficient proof of deliberate sabotage.

Russian/Geopolitical Angle

  • Several comments see a pattern with other cable/pipeline incidents and Russian or Chinese state interests, pointing to repeated crossings over other Norwegian cables and broader sabotage reports.
  • Counterpoints:
    • At the time of the incident Russia was not yet in an “open hot war” with the West (only Ukraine), so it might still seek plausible deniability and workable relations with Norway.
    • Evidence is circumstantial; legal standards for attribution or retaliation are not met.

Undersea Fiber Technology & Capacity

  • The cable carries both fiber and a power conductor; electricity powers optical amplifiers (often erbium‑doped fiber amplifiers) spaced along the route.
  • Amplifiers boost light directly, without full optical‑electrical‑optical regeneration.
  • Capacity is set more by terminal equipment than by the glass itself; older cables can be upgraded via better DWDM, modulation (e.g., high‑order QAM), and DSP.
  • Debate over “Shannon limit”:
    • One side treats it as a hard physics‑based upper bound for a given medium.
    • Others argue practical “limits” are model‑ and technology‑dependent, and have repeatedly been pushed by new signaling methods.

Strategic Importance of Svalbard

  • Svalbard hosts a key polar‑orbit ground station used by NASA, ESA, and many commercial EO satellites; frequent passes make it vital for timely data (including imagery used in Ukraine).
  • The cable cut thus affects far more than local internet for ~2.5–3k residents.
  • Some suggest Starlink as a backup path; others reply that:
    • Existing satellites aren’t designed to talk to Starlink.
    • Starlink’s current polar coverage and bandwidth are far below a multi‑10 Gbit/s fiber trunk, so at best it’s a degraded fallback.

Trawling, Environment, and Ethics

  • Several commenters argue bottom trawling should be banned, citing EU data that a large share of coastal seabed habitats are physically disturbed, mostly by trawling.
  • Others highlight slavery and extreme labor abuse on some distant‑water fleets.
  • Pushback focuses on food prices and practicality, but some say they would pay more or have already largely stopped eating industrially caught seafood.

Infrastructure Vulnerability, Law, and Insurance

  • A Canadian case is discussed where a fisherman repeatedly cut a fiber cable with a saw and was found liable for over $1.2M; his insurance was voided for willful recklessness.
  • This prompts a long side‑discussion on liability, “moral hazard,” when insurance pays (or subrogates), and how intentional or reckless acts are treated.
  • Commenters note that submarine cables are marked on charts and that professional skippers are expected to avoid anchoring or trawling over them—though some knowingly break rules.

Espionage and Tapping Cables

  • Historical examples (e.g., Cold War cable taps) are mentioned to show undersea links are long‑standing intelligence targets.
  • Technically, tapping fiber is possible but difficult to do undetected, especially with encryption and huge aggregate bandwidth.
  • Some think advanced state actors might still manage it (possibly even with sophisticated, detachable taps); others are skeptical and note no such devices have been publicly reported from cable repairs.