Bulgaria's Maritime Administration said on 29 October that the Liberian-flagged container ship CONTSHIP JET (Haifa to Constanța, all 18 crew rescued), struck the previous day about 21 nautical miles off Cape Kaliakra inside Bulgaria's EEZ by 'three naval drones' in the words of Defence Minister Dimitar Stoyanov, had sunk, with some 20 of its 421 containers lost overboard and posing a navigation hazard. Navy commander Rear Admiral Kiril Mihaylov said the origin of the drones could not be determined, and the defence ministers of Bulgaria, Romania and Türkiye announced in a joint statement a Black Sea coordination mechanism built on regular consultations, intelligence sharing, maritime surveillance and early warning. It was the fifth attack in the area this month; Russia's Ministry of Defence claimed to have struck 'a cargo vessel used by the Ukrainian military' in the Black Sea the same night, and no link between the two has been established.
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AI & Security Observatory（2026-10-29）「ブルガリア沖で海上ドローン3機の攻撃を受けたコンテナ船が沈没 ブルガリア・ルーマニア・トルコが黒海調整メカニズムを発足」『AI & Security Observatory』、第1.0版、最終更新2026-10-30。https://ai-security-observatory.org/ja/brief/brief-20261030-08/
AI & Security Observatory (2026-10-29). Container ship hit by three naval drones off Bulgaria sinks; Bulgaria, Romania and Türkiye launch a Black Sea coordination mechanism . AI & Security Observatory, version 1.0. Updated 2026-10-30. https://ai-security-observatory.org/en/brief/brief-20261030-08/
Version 1.0 · Publication date 29 Oct 2026 · Updated 30 Oct 2026
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