'Shadow fleets' and sabotage: are Europe's undersea cables under attack?

Original Article ↗ Hacker News Discussion ↗

Effectiveness of Naval Patrols and Submarines

  • Broad consensus that big submarine fleets wouldn’t meaningfully prevent cable sabotage. Submarines are optimized for stealth and deep-water combat, not wide-area monitoring or intercepting surface ships/anchors.
  • Surface patrol vessels plus maritime patrol aircraft, helicopters, and UAVs are seen as more suitable for surveillance and interception.
  • However, monitoring enough area (e.g., tens of thousands of km² in the Baltic) to protect long cables is described as practically and financially infeasible.

Detection, Monitoring, and Attribution

  • Ships already use AIS, but many deliberately switch it off (“dark vessels”), and enforcement is weak.
  • Suggestions: anomaly detection combining AIS, satellite/UAV imagery, persistent LEO sensing, and rapid localization of breaks.
  • Some argue militaries could track more fishing/shadow vessels but don’t allocate resources to do so.
  • The Baltic and North Seas are shallow and jurisdictionally fragmented, making sabotage easier than in deep US coastal waters.

Deterrence, Enforcement, and Sanctions

  • Many see the core problem as lack of consequences, not lack of hardware.
  • Proposed responses:
    • Seizing or liquidating ships/cargo after suspicious anchor-drag/cable damage.
    • Criminal liability for “derelict” captains and financial penalties covering repair costs.
    • Rewards and protections for crew who whistleblow.
    • Tighter control over access chokepoints (e.g., Danish straits) and onboard observers in critical areas.
  • Others note “shadow fleet” tankers use flags of convenience and opaque ownership, making legal enforcement and asset disposal costly and complex.

Hybrid Warfare and Strategic Framing

  • Many frame this as Russian hybrid warfare: small, deniable acts (cable cuts, water/power sabotage, jamming satellites) to create FUD, stress societies, and probe NATO responses.
  • Debate over whether Europe is “in denial” versus engaged in a proxy war via support to Ukraine and planned rearmament.
  • Some argue stronger EU hard/soft power and consistent sanctions enforcement would reduce incidents more than more ships.

Accidental vs Intentional Breaks; Media Hype

  • Known global baseline: 100–200 cable faults/year, mostly accidental (fishing, anchors).
  • Disagreement:
    • Some claim clear signs of intentional sabotage in recent Baltic incidents and note an unusual cluster since 2022.
    • Others emphasize lack of confirmed intent, point to long-standing accidental breaks, and see a media-driven frenzy layered onto routine maintenance issues.
  • Nord Stream is repeatedly cited as precedent; there is sharp disagreement over who did it and how much it has changed norms.

Protection Schemes and “Stupid Ideas”

  • Ideas like minefields along cables are widely rejected as unsafe, uneconomic, and legally/politically toxic.
  • Physical armoring or “booby traps” are criticized as creating disproportionate risk to innocent crews.
  • A few humorous asides suggest trained marine mammals; serious consensus focuses on better monitoring and raising the cost of misbehavior instead.