The CONTSHIP JET was struck around midday on Wednesday, approximately 17 nautical miles east of Cape Kaliakra inside Bulgaria's exclusive economic zone but outside its territorial waters . Three unmanned surface vessels (USVs) hit the vessel, causing severe damage; the ship was abandoned by its crew, drifted south, and eventually sank roughly 36 nautical miles from Varna . Video verified by Reuters showed a matte black sea drone driving alongside the vessel before turning toward its hull, followed by an explosion that caused the ship to list .
The crew—14 Filipino and 4 Ukrainian nationals—was evacuated safely and transferred to Varna by a Bulgarian naval vessel . Bulgarian Navy Commander Kiril Mihaylov revealed that a French Atlantique 2 reconnaissance aircraft had detected the drones and transmitted an alert approximately one hour before impact, but Bulgarian forces were unable to intercept the attack because the distance exceeded their response capacity and the strike occurred in international waters .
Responsibility remains unclaimed, but maritime risk analysts have assessed the weapon involved. Tomas Alexa, a senior analyst at Ambrey, identified the USV as a matte black, 5-6 meter-long platform likely derived from the Russian Murena-300S design, controlled remotely . Former Ukrainian naval officer Andriy Ryzhenko said the drone did not resemble any known Ukrainian naval model . Moscow has denied involvement in recent Black Sea shipping attacks and issued no immediate comment .
The human and environmental stakes were significant. The vessel carried 421 containers including lithium-ion batteries, corrosive liquids, acids, and industrial components . Bulgarian authorities conducted initial inspections and found no visible traces of pollution . The rescue came amid a broader pattern: at least six commercial ships have been attacked by drones off Bulgaria's coast this month, with approximately two dozen seafarers feared dead . Bulgarian Prime Minister Rumen Radev has said some attacks appear to benefit Russia .
Greek Prime Minister Kyriakos Mitsotakis used the incident to escalate diplomacy at the highest level. Speaking at a high-level UN Security Council debate under Greece's October presidency, he declared: "Targeted civilian commercial shipping is completely unacceptable. It is yet another reminder for the urgent need for a global maritime truce" . He warned that disruptions to freedom of navigation increase shipping and insurance costs and ultimately raise prices for consumers, adding: "We cannot allow our seas to become a jungle" . Greece holds the world's largest commercial fleet, making it particularly sensitive to maritime security threats .
The sinking has intensified regional security coordination. Bulgaria, Romania, and Turkey—Black Sea littoral states—plan to hold regular consultations to respond to vessel attacks . Bulgaria, an EU and NATO member, has sought assistance to bolster security off its Black Sea coast . The attack also fits into a wider escalation of maritime threats globally, from limpet mine strikes in the Strait of Hormuz to Houthi pressure on Red Sea shipping, creating a multi-front crisis for commercial shipping that insurers and charterers are struggling to price.
For shipping markets, the CONTSHIP JET sinking reinforces that the Black Sea—once a secondary concern compared to Hormuz—has become a lethal corridor for commercial vessels. The involvement of a Greek-owned, Liberian-flagged vessel chartered by Israeli shipping company ZIM, carrying cargo from Israel to Romania, illustrates how quickly geopolitical conflicts can converge on a single hull. Until naval escorts, drone countermeasures, or a diplomatic truce materialise, shipowners face an increasingly fragmented risk map in which no single corridor is reliably safe.