# Ghost Ships Over Europe

Companion Study Notes

## The Short Version

Recent research highlights a concerning trend in European airspace: a coordinated campaign of uninhabited aerial vehicle (UAV) incursions, likely orchestrated by Russia, utilizing uncrewed maritime vehicles (UMVs) as covert launch platforms. Between August 2024 and February 2026, these incursions targeted critical sites across at least a dozen NATO member states and Ireland, revealing significant vulnerabilities in European air-defense systems. The campaign has not only exposed gaps in defense architecture but also raised questions about the effectiveness of current maritime law in addressing gray-zone warfare.

## Why It Matters

The rise of UAVs and UMVs in military operations presents a new challenge for European nations, particularly as these technologies evolve faster than existing governance frameworks. Russia's use of these systems in a gray-zone context—where actions fall short of formal warfare—complicates the response strategies of NATO allies. The implications extend beyond military readiness; they touch on economic stability, national security, and the legal frameworks that govern maritime operations. Understanding this dynamic is crucial for policymakers aiming to safeguard European airspace and maintain collective security.

## Key Ideas

### The Maritime-UAV Nexus and the "Shadow Fleet"
- **Operational Mechanism:** Russian commercial vessels, including a fleet of approximately 1,300 re-flagged tankers, are being utilized as covert platforms for UAV operations. These vessels often disable their Automatic Identification System (AIS) transponders or employ GNSS spoofing to conceal their activities before launching UAVs.
- **Case Evidence:** A notable incident in February 2026 involved a UAV launched from the Russian spy ship *Zhigulevsk* within Swedish territorial waters, underscoring the operational capabilities of this shadow fleet.

### Strategic Intent: "Reconnaissance by Battle"
- The UAV incursions align with the Russian military doctrine of *razvedka boyem*, aimed at compelling adversaries to activate their defense systems rather than seizing territory.
- **Intelligence Collection:** These operations are designed to gather critical data on radar systems and response protocols, with specific targeting of nuclear sites and logistics hubs supporting Ukraine.

### Legal Gaps and the Escalation Calculus
- Current maritime law is ill-equipped to address the challenges posed by gray-zone activities involving UAVs and UMVs. The legal landscape is fragmented, with varying rules of engagement across nations.
- **Escalation Risks:** Miscalculations regarding responses to these incursions could inadvertently escalate tensions, as the perpetrators maintain plausible deniability through the use of civilian-grade hardware.

## What To Listen For

As you engage with this briefing, pay attention to the implications of the UAV incursions on European air-defense strategies and the legal frameworks governing maritime operations. Consider the strategic objectives behind these incursions and how they reflect a broader trend in modern warfare. The insights provided will shed light on the urgent need for cohesive policy responses to enhance security and deterrence in the face of evolving threats.

## Caveats / What Remains Uncertain

While the report outlines significant findings regarding the UAV campaign and its implications, uncertainties remain regarding the full extent of Russia's operational capabilities and the potential for future escalations. The effectiveness of proposed policy responses and the ability of European nations to adapt to these challenges also warrant careful consideration.