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Defence & Security6 Nov 2026 · about 6 min

War Comes to NATO’s Black Sea Coast, and Shipping Starts Saying No

The brief

Russian drone and uncrewed-surface-vessel attacks have spread beyond Ukrainian waters to merchant ships near Romania and Bulgaria. Ambrey recorded attacks in Romanian, Bulgarian, Turkish, and Georgian waters. The shift matters because these are busy commercial areas, and Romania and Bulgaria are NATO members. The Contship Jet, a Liberian-flagged, Greek-owned vessel, was attacked off Bulgaria. Ambrey linked nine of ten attacked vessels in Romanian and Bulgarian waters to Ukrainian trade. A ship can attract risk through its cargo, owner, charterer, or route, including a possible Ukrainian destination. Between October 5 and October 28, eight aerial-drone strikes and two uncrewed-surface-vessel attacks were recorded. Owners and crews are now reassessing whether to accept these voyages at all. Richard Meade said analysts were being approached about possible charter-party disputes. Ambrey still rates direct attacks on ships without Ukrainian links as negligible to low, but overall Western Black Sea risk has risen.

01

What attacks have recently spread to merchant vessels near Romania and Bulgaria, and why are some shipowners refusing orders to those ports?

Russian drone and uncrewed-surface-vessel attacks have spread beyond Ukrainian waters to merchant ships near Romania and Bulgaria. Ambrey recorded attacks in Romanian, Bulgarian, Turkish, and Georgian waters. The shift matters because these are busy commercial areas, and Romania and Bulgaria are NATO members.

The Contship Jet, a Liberian-flagged, Greek-owned vessel, was attacked off Bulgaria. Ambrey linked nine of ten attacked vessels in Romanian and Bulgarian waters to Ukrainian trade. A ship can attract risk through its cargo, owner, charterer, or route, including a possible Ukrainian destination. Between October 5 and October 28, eight aerial-drone strikes and two uncrewed-surface-vessel attacks were recorded.

Owners and crews are now reassessing whether to accept these voyages at all. Richard Meade said analysts were being approached about possible charter-party disputes. Ambrey still rates direct attacks on ships without Ukrainian links as negligible to low, but overall Western Black Sea risk has risen.

02

What are NATO, Romania, and Bulgaria, and why does the location of these attacks matter?

NATO, the North Atlantic Treaty Organization, is a defensive alliance whose members coordinate security and commit to mutual defense. Romania and Bulgaria are countries on the western Black Sea coast and members of NATO. Their waters therefore sit close to both the war zone and a major international shipping region.

The article reports attacks on merchant vessels in Romanian and Bulgarian waters, as well as in Turkish and Georgian waters. It records ten ship strikes between October 5 and October 28. The Contship Jet was attacked off Bulgaria, while many vessels linked to Ukrainian trade have faced growing exposure near Romania.

This location matters because the attacks are no longer confined to Ukrainian ports or waters. Ambrey describes a geographical spread and heightened threat across the Western Black Sea. The article does not report a NATO military response, but commercial operators are already reconsidering voyages and potential charter obligations.

03

How many maritime security events and direct strikes has Ambrey recorded in the Western Black Sea?

Ambrey recorded 696 security events in the Western Black Sea alone. About 537 occurred in Ukrainian waters. These figures show a broad and sustained security problem, rather than a handful of isolated incidents affecting one port or one shipping lane.

For a more specific period, Ambrey recorded ten strikes on ships at sea between October 5 and October 28. Eight involved aerial drones, and two involved uncrewed surface vessels. The report attributed all ten strikes to Russia. The attacks occurred as operations by Russia and Ukraine intensified from July onward.

The numbers describe different measures. The 696 figure covers security events across the Western Black Sea. The ten figure covers direct ship strikes during one stated period. Ambrey still assesses direct attacks on vessels with no Ukrainian link as negligible to low, while warning that overall exposure has increased.

04

Why might a ship with Ukrainian cargo, a Ukrainian-linked owner, or a Ukrainian port in its route be treated as a potential target?

A vessel may be treated as a potential target if its owner, manager, charterer, cargo, last port, or next port has a Ukrainian link. The reason is strategic: Ambrey says Russia’s intent is to weaken Ukraine’s ability to import and export cargo. A ship connected to that trade may therefore be viewed as supporting Ukraine’s wartime supply network.

The Liberian-flagged, Greek-owned Contship Jet illustrates the concern. It was attacked off Bulgaria, and Ambrey said cargo possibly bound for Ukraine might have been enough to make the ship a target. The firm was still investigating whether the cargo was dual-use. Russia describes Ukraine-bound cargo ships as carrying military or dual-use cargo, although Ambrey found no evidence of this on vessels struck in Romanian or Bulgarian waters.

This targeting logic raises risk even for ships without Ukrainian ownership. Ambrey still rates direct attacks on vessels with no Ukrainian link as negligible to low, but operators with any connection face greater exposure and may reconsider voyages.

05

What happens to shipping, grain exports, crews, and food stocks when vessels avoid Ukrainian-linked routes and ports?

When vessels avoid Ukrainian-linked routes, Ukraine loses access to ships needed to move imports and exports. The article says attacks on Ukrainian ports and infrastructure have cut seaport export capacity by up to 95%. That directly affects grain exports and the country’s ability to send goods through maritime channels.

Ambrey tracked a significant shift toward Sulina and ports in the Danube River Delta. Nine of the ten vessels attacked in Romanian and Bulgarian waters were linked to Ukrainian trade. If owners refuse those orders, fewer ships may be available, and crews face harder choices about accepting dangerous voyages. The article does not quantify resulting food stocks.

In general, reduced shipping can delay grain deliveries and raise pressure on alternative routes, which may affect food availability. However, the source provides no figures for food inventories, prices, or shortages. It clearly shows that avoidance threatens trade capacity and that the shift itself remains exposed to attack.

06

What alternative routes or ports can Ukraine use when attacks make its seaports too dangerous, and what limits those alternatives?

The article identifies Sulina and ports in the Danube River Delta as Ukraine’s main alternative maritime gateways. This shift followed attacks on Ukrainian ports and infrastructure, which Ambrey says reduced Ukraine’s seaport export capacity by up to 95%. The alternatives help keep grain and other trade moving when direct access becomes more dangerous.

Many vessels wait near Sulina for transits toward Ukrainian waters, the Danube River Delta, or seaports. That concentration creates an important link between the alternative route and Ukrainian trade. Ambrey says nine of ten vessels attacked in Romanian and Bulgarian waters were connected to Ukrainian trade, showing that changing location does not remove the perceived risk.

The article does not state the alternatives’ cargo capacity, infrastructure limits, or ability to replace Ukrainian seaports. It does show that attacks have geographically spread into Romanian and Bulgarian waters. Owners and crews therefore face continuing danger even when they avoid Ukraine’s most exposed ports.

07

Why are commercial ships, ports, and maritime trade so important to a country's ability to import supplies and export goods during wartime?

Commercial shipping connects a country to external supplies and overseas buyers. Ports are the transfer points where ships load imports and exports. During wartime, this network can carry food, fuel, equipment, raw materials, and other goods, while exporting products that bring income and sustain trade.

The article gives Ukraine as a clear example. Attacks on Ukrainian ports and infrastructure cut its ability to export from seaports by up to 95%. Grain exports shifted toward Sulina and Danube River Delta ports. Ambrey says Russia’s stated effect, in its assessment, is to degrade Ukraine’s ability to import and export cargo.

When ships avoid dangerous routes, fewer goods move, voyages become harder to staff, and alternative gateways carry greater pressure. The source does not quantify food stocks or import shortages. It does show that attacks on maritime trade can weaken a country’s supply lines and economic connections during war.

This brief was written by AI from the original reporting and checked by other models. Names, figures and quotes come from the source; read it for full context.

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