The Greek-owned, Liberian-flagged container ship Contship Jet sank in the Black Sea on 29 October, one day after three maritime drones struck it in Bulgaria's exclusive economic zone. Bulgarian authorities said there was no visible pollution in the first inspections, though the cargo included batteries, corrosive liquids, acids and industrial components. [1] [2]

All 18 crew members — 14 Filipinos and four Ukrainians — were rescued and taken to Varna. Reuters-verified footage showed a drone approaching the ship before an explosion and the vessel listing; Bulgaria said a French patrol aircraft had warned it of the approaching drones but they could not be stopped. [1]

ContextNo party had claimed responsibility at the review cutoff. Maritime security firm Ambrey assessed that the surface drone was likely based on Russia's Murena-300S design, while a former Ukrainian naval officer told Reuters that it did not resemble Ukrainian models he knew. Those assessments do not establish who launched the drones. [1]