Black Sea Drone Strike Sinks Greek-Managed Cargo Ship Off Bulgaria, Raising Shipping Security Fears

A Greek-managed container ship has sunk in the Black Sea after being struck by three naval drones off Bulgaria's coast, intensifying concerns about the safety of commercial shipping amid the ongoing Russia-Ukraine war. Video footage of the incident shows an unmanned sea drone approaching the vessel before an explosion damages its hull.

The Liberian-flagged vessel, CONTSHIP JET, was carrying 421 containers and travelling from Haifa, Israel, to Constanța, Romania, when it was attacked on Wednesday, October 28. The strike occurred within Bulgaria's exclusive economic zone (EEZ), approximately 21 nautical miles southeast of the coastal town of Shabla, but outside the country's territorial waters.

All 18 crew members, comprising 14 Filipinos and four Ukrainians, were rescued and taken safely to the Bulgarian port of Varna. The ship's management company, Contships Management, confirmed that the crew had been evacuated.

Video Shows Sea Drone Approaching the Vessel

Footage of the incident shows a small, dark unmanned surface vehicle moving alongside the container ship before turning towards its hull. A separate recording captures an explosion, after which the vessel begins listing.

Maritime security company Ambrey analysed footage reportedly recorded by a crew member aboard the ship. The company identified the unmanned vessel as a five-to-six-metre-long surface drone that appeared to approach the container ship at high speed.

According to Ambrey analyst Tomas Alexa, the vehicle was likely a variant of, or derived from, Russia's Murena-300S design. He said its movements suggested that it was remotely controlled.

However, the drone's appearance has not established who launched it. The identity of those responsible for the attack remains unconfirmed, and Russia has denied involvement in recent strikes against commercial vessels in the region.

Hazardous Cargo Raises Environmental Concerns

The CONTSHIP JET was carrying 421 containers containing a range of goods, including lithium-ion batteries, corrosive liquids, acids and industrial components.

The possibility of hazardous materials entering the Black Sea raised concerns about potential environmental damage following the sinking. Bulgarian authorities said initial inspections had found no visible signs of pollution from the vessel.

The incident also highlighted the risks posed by attacks on merchant ships carrying industrial and potentially hazardous cargo through busy international shipping routes.

Series of Attacks Raises Concerns Across the Black Sea

The attack on the CONTSHIP JET is part of a broader series of drone strikes against commercial vessels operating near Bulgaria and Romania. Bulgarian authorities said at least six ships had been attacked off the country's coast during October.

Government statements have also indicated that around two dozen international seafarers are feared dead or remain missing following recent incidents in the region.

Ukraine has blamed Russia for attacks on commercial shipping, while Bulgarian Prime Minister Rumen Radev has said that the incidents appear to benefit Moscow. Russia has denied involvement.

The attacks have increased concerns that the conflict is extending further into commercial maritime routes, creating risks for vessels operating near NATO member states.

Bulgaria Seeks Stronger Maritime Security

Bulgaria, which is both a European Union and NATO member, has sought assistance from its allies to strengthen security along its Black Sea coastline.

Bulgarian naval commander Kiril Mihaylov said authorities had received an alert about a possible drone attack from a French patrol aircraft but were unable to prevent the strike.

The incident has also prompted calls for stronger coordination among countries in the region. Bulgaria, Romania and Turkey have discussed improving intelligence sharing, early-warning capabilities and cooperation to protect commercial vessels and maritime infrastructure.

Turkey's defence minister has warned both Russia and Ukraine against attacks on commercial ships in the Black Sea, saying Ankara reserves the right to pursue legal action over such incidents.

Wider Implications for International Shipping

The Black Sea remains an important route for the movement of energy, agricultural products and industrial goods. Continued attacks on merchant vessels could disrupt shipping schedules, increase insurance costs and force operators to reconsider routes through the region.

Russia's war against Ukraine has already affected maritime trade, particularly after repeated attacks on Ukrainian ports and shipping infrastructure. Ukraine has increasingly relied on alternative routes close to the coastlines of Romania and Bulgaria to maintain exports.

The sinking of the CONTSHIP JET adds to the security challenges facing international shipping companies. Although the crew escaped safely, the attack demonstrates the potential consequences of naval drones operating against commercial vessels in waters close to NATO territory.

With responsibility for the latest strike still unconfirmed, regional governments face the challenge of strengthening maritime protection while preventing further escalation in an already volatile Black Sea region.