At least six commercial vessels have been attacked by drones off Bulgaria's coast in October 2026, resulting in about two dozen estimated seafarer deaths in earlier incidents.

From the articleGreek container ship sinks after drone attack off Bulgaria | ReutersAlso in ZIM vessel sinks in Black Sea after being hit by 3 suicide boat drones; no injuries, Ship sinks off Bulgaria’s Black Sea coast after being hit by drones, Zim-chartered container ship sinks after drone strike in Black Sea | Ctech