Constanta Blast Exposes Radar Blind Spot

Berth 78 in Constanta port is an ordinary enough place until a maritime drone explodes against the quay wall. There were no casualties. No attacker has been proven. But the incident has left Romania facing a harder question: who, in peacetime, is actually responsible for spotting a military-grade weapon before it drifts into a civilian harbour?

Constanta is not just a Romanian port. Since Russia's full-scale invasion of Ukraine, it has become part of Europe's emergency logistics system. Ukrainian grain moves through the EU's Solidarity Lanes, the port sits on the revised Trans-European Transport Network, the EU's map of priority infrastructure, and regional experts now describe Romania as a possible Black Sea logistics hub for NATO (AGERPRES). If Constanta is disrupted for any length of time, the effects run beyond the quay: Danube shipping, grain exports, Black Sea insurance pricing and allied military planning all come into view.

Two Surveillance Systems, Both Blind to What Arrived

Romania's interim defence minister, Radu Miruță, has said the awkward part aloud: the Romanian army does not guard Constanta port in peacetime (European Pravda, WP). That job belongs to other state bodies. His argument is that the port itself needs detection systems fit for the threat now reaching the Black Sea coast.

The port had eyes in the air and on the water. The trouble is that neither system was built for what arrived. An anti-drone system intercepted an aerial drone in May. Romania's coastal surveillance network tracks vessels longer than roughly six metres. A Magura V5 maritime drone measures 5.5 metres. The weapon, in other words, sat just below the line at which the system begins to see.

The response after the blast showed how fragmented the chain remains. Civilian maritime authorities spotted the object and alerted the navy. The navy notified the coast guard and SRI, Romania's domestic intelligence service. Ukraine sent a warning shortly before the drone self-detonated. Only afterwards did Romania's coast guard begin testing an autonomous system for detecting maritime drones (Digi24). Miruță has since confirmed that five more drone remains were destroyed at sea, some containing explosive material (Adevărul, Antena 3).

Spillover, Not a Strike

The public evidence does not establish a deliberate attack on a NATO port. Romanian and Ukrainian reporting points instead to a Ukrainian maritime drone that lost control, probably after Russian electronic warfare interfered with it (BTA, Antena 3). President Nicușor Dan has blamed Moscow through that electronic-warfare chain, rather than through a proven order to strike Constanta (Moldova1). Bucharest and Kyiv are now working on a protocol for warning thresholds and self-destruction programming before drones enter Romanian waters.

That distinction matters. A deliberate attack on a NATO port would move quickly into military and alliance channels. A weapon pushed off course by electronic warfare is murkier. It is too dangerous to be treated as an ordinary port incident, but too ambiguous to trigger automatic military command.

Who Watches the Water

The EU already has laws for this terrain. The CER Directive, which requires critical entities to assess risks and build resilience, covers transport infrastructure. NIS2, its companion law on cybersecurity and governance for essential services, covers port managing bodies and vessel-traffic services (EUR-Lex, European Commission). Commission guidance issued in recent days treats physical, digital and hybrid disruption as a single policy field. What it does not do is identify which Romanian actor first sees a small maritime drone, classifies it, and has the authority to stop it before it reaches a berth.

Some of this is plainly national. Under CER, member states identify and supervise the critical entities in their own territory, and Romania's implementation may simply be running late. But the same question now hangs over every eastern-flank port carrying wartime logistics: Varna, Burgas, Alexandroupoli, Klaipėda and Gdańsk. Bulgaria has already expanded its joint mine-countermeasure mission with Romania and Turkey to include surveillance of undersea infrastructure (BNR, AGERPRES). Lithuania has moved further in the air, giving airport operators specific responsibility for drone-risk assessment and contingency procedures (LRT). Ports have no comparable duty.

Europe has asked civilian hubs to do wartime work. It has not yet given them wartime-level detection to match. Miruță, and every defence minister on the eastern flank, now owes the public a precise answer to a simple question: who is watching the water?