At around noon on 28 October, about 16–17 nautical miles east of Cape Kaliakra inside Bulgaria's exclusive economic zone, the Liberian-flagged container ship Contship Jet (421 containers, sailing from Haifa to Constanța) was hit by sea drones; all 18 crew were rescued by the Bulgarian Navy and others and taken to Varna. Defence Minister Dimitar Stoyanov said three drones were involved, and the ship is reported listing and to have lost containers. No attribution has been made officially; following merchant-ship losses in mid-October, the defence ministers of Bulgaria, Romania and Türkiye met the same day on Black Sea maritime security (B2).

[S1] All 18 Crew Members of Drone-Hit Container Ship near Kaliakra Have Been Rescued · [S2] Drone attack on container ship off Bulgaria's Cape Kaliakra

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AI & Security Observatory（2026-10-28）「ブルガリア沖でコンテナ船が海上ドローンの攻撃を受け乗員18人を救助　黒海3カ国の国防相が協議」『AI & Security Observatory』、第1.0版、最終更新2026-10-29。https://ai-security-observatory.org/ja/brief/brief-20261029-13/

AI & Security Observatory (2026-10-28). Container ship hit by sea drones off Bulgaria, 18 crew rescued; Black Sea defence ministers confer . AI & Security Observatory, version 1.0. Updated 2026-10-29. https://ai-security-observatory.org/en/brief/brief-20261029-13/

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Version 1.0 · Publication date 28 Oct 2026 · Updated 29 Oct 2026

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