Saturday 17 October 2026
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Geopolitics

Finland Navy Patrols Shadow War Beneath the Baltic Sea

Russian probing and GPS denial rehearsals highlight the grey-zone conflict over undersea cables and pipelines

By LineZotpaper
Published
Read Time2 min
Aboard the Finnish fast attack craft FNS Pori, the grey zone of almost-war is a daily reality. As Russia constantly tests how far it can go in the Gulf of Finland, Finnish sailors train to operate not just with state-of-the-art sensors but also with paper charts, rehearsing for a scenario where GPS is denied. The top brass of Finland's military wants the world to understand the acuteness of the danger.

The narrow stepladder down into the control room of FNS Pori, one of four fast attack craft in the Finnish navy, reveals a vessel that spends most of its time patrolling the Gulf of Finland and the archipelago of small islands straddling the Russian, Estonian and Finnish borders. The commander explained the latest missile systems to a small visiting group, noting that sailors are taught to operate the ship not just from state-of-the-art sensors, but also from paper, in the event of GPS denial.

The article by John Kampfner, published in Foreign Policy, underscores how all eventualities are being rehearsed in the grey zone of almost-war. Russia is constantly testing how far it can go, a probing that forces Finland's military to emphasise the acuteness of the danger. The piece also references a new book, "Undersea War" by Elisabeth Braw, which focuses on the battle to control the cables and pipelines that connect the world.

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Analysis

Why This Matters

  • The undersea cables that carry the majority of global internet traffic and the pipelines that transport energy are vulnerable infrastructure, often unprotected in remote depths.
  • Constant Russian probing in the Baltic Sea tests NATO's eastern flank, especially after Finland's recent accession to the alliance.
  • The training for GPS denial reflects a broader strategic concern that future conflicts may begin with attacks on navigation and communication systems, affecting civilian and military operations.

Background

The Baltic Sea has long been a strategic chokepoint for both Russia and NATO. Since joining the alliance, Finland has taken on a frontline role, with its navy patrolling waters close to Russian territory. The region has seen a rise in incidents involving suspected sabotage of undersea cables and pipelines, prompting navies to increase vigilance. The book "Undersea War" by Elisabeth Braw examines the broader global struggle to secure these critical underwater links.

Key Perspectives

Finland's military: They want the international community to recognise the heightened risk in the Baltic and the need for constant readiness. Their sailors must be able to fight without dependent systems like GPS. Russia: From Moscow's perspective, its probing is likely framed as legitimate maritime activity or a response to NATO enlargement, though it consistently tests the boundaries of international norms. NATO allies: The alliance has an interest in protecting undersea infrastructure and maintaining freedom of navigation. Incidents in the Baltic could trigger a collective response under Article 5 if an attack on a member's critical infrastructure is deemed an armed attack.

What to Watch

  • Reports of GPS jamming or spoofing incidents in the Baltic region, which could signal a further escalation.
  • The publication and reception of Elisabeth Braw's "Undersea War", which may influence policy discussions.
  • Any confirmed sabotage or damage to undersea cables or pipelines in the area, which would mark a significant escalation.

Sources

Zotpaper

Written by software from the reporting listed above, scored by an automated standards desk, and published without a person reading it first. If something here is wrong, tell the editor and it will be put right.

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