In brief
The container ship, carrying lithium‑ion batteries and gas oil, was hit by maritime drones and sank near the Bulgarian coast on 28 October 2026. All 18 crew members were rescued, and initial seawater samples show no visible pollution. Bulgarian authorities have scheduled further sampling at multiple coastal sites to detect any hidden contamination.
A container ship, the CONTSHIP JET, was struck by three maritime drones east of Cape Kaliakra on Wednesday night and sank at around midnight. The 421‑container vessel, which carried lithium‑ion batteries and light fuel oil, had 18 crew members—14 Filipinos and four Ukrainians—rescued and transported to Varna. Early reports from the Varna Regional Administration confirmed that the ship sank about 21 nautical miles southeast of Shabla.
Separation of the vessel’s cargo and subsequent security protocol is in effect. Maritime Administration Executive Agency teams inspected the wreck and assessed the container ship’s condition. According to the agency, the gas oil on board is expected to evaporate quickly and not reach the Bulgarian coast, so initial evaluations found no significant adverse effects on the marine environment or coastline. The agencies are maintaining constant coordination and monitoring, ready to take action if a pollution risk emerges.
Bulgarian environmental authorities have already commenced extensive seawater sampling. Defense Ministry teams collected samples from two sites in national waters and reported no visible signs of pollution. The Environment and Water Ministry announced further sampling at five coastal locations—Durankulak, Shabla, Cape Kaliakra, Byala, and Sozopol—to detect petroleum products, polychlorinated biphenyls, metals, and other physicochemical indicators. Samples will be analysed at the Executive Environment Agency’s regional laboratories in Varna and Burgas. The aim is to confirm whether any pollution is present and to identify changes in seawater quality that cannot be detected through visual inspection alone.
Admiral Emil Eftimov, Bulgaria’s outgoing Chief of Defence, noted in an interview that the drones which struck the ship were believed to have originated from the east and did not enter Bulgarian territorial waters. He stated,
We are not at war. The drones did not enter territorial waters, so we did not take action.
He added that the country has been enhancing intelligence, surveillance, and early‑warning capabilities, and that new anti‑drone systems are being deployed. The Admiral highlighted that Bulgaria’s participation in allied defence networks allows it to share capabilities with partners and maintain a reliable defence posture.
While the initial environmental assessment suggests no immediate damage, several uncertainties remain. Sources do not yet confirm whether the seawater samples will detect any contamination from the lithium‑ion batteries or other hazardous cargo. The exact origin of the drones, whether from the east as the Admiral reported or from another direction, remains unverified. The long‑term environmental impact of the ship’s sinking and the possibility of further attacks in Bulgarian waters have been acknowledged as pending matters by the responsible authorities.
