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EventB1likely · moderate confidenceRU · adversaryWest · friendlycross-side corroborated

Ukrainian drone strikes hit merchant vessels off Bulgarian coast

Bottom line

Ukrainian drone strikes targeted two Maltese-flagged cargo ships, CHELSEA-3 and AZOV CONCORD, in Bulgaria's exclusive economic zone, injuring crew and prompting diplomatic protests.

Why it matters

Attacks on merchant shipping in international waters near NATO member Bulgaria escalate the conflict's maritime dimension and test NATO's collective defense and diplomatic response mechanisms regarding neutral shipping.

Ukrainian drone attacks on CHELSEA-3 and AZOV CONCORD in Black Sea near Bulgarian coast; Bulgaria summons Russian ambassador; ships owned by Ukrainian entities. CHELSEA-3 struck 18 miles off Byala, Bulgaria. Second attack in a week. 12 crew injured.

Pictures from the cited posts

Evidence — 4 independent origins

  • Liveuamapsource Borigin t.me
    Original text (excerpt)

    Another vessel has been struck off the Bulgarian coast, 18 miles from the Black Sea town of Byala. This is the second attack in a week; the previous one occurred 70 km east of Byala. The vessel, Chelsea 3, is a Malta-flagged cargo ship managed by Odesa-based Black Sea Shipping Ma

  • Rybarsource Corigin t.mearchive
    Original text (excerpt)

    📝 Новая атака в Черном море! 📝 Видишь украинское судно у своих берегов? Жди беды . Так наверняка реагируют болгарские и румынские власти, когда видят, что суда с украинской принадлежностью проходят рядом . Этой ночью по заявлениям руководства Болгарии в Черном море ночью было ата

  • Rybar in Englishsource Corigin t.mearchive
    Original text (excerpt)

    Fwd from @ 📝 New attack in the Black Sea! 📝 See a Ukrainian vessel near your shores? Expect trouble . That's surely how Bulgarian and Romanian authorities react when they see ships with Ukrainian ownership passing nearby . Last night, according to Bulgaria's leadership, a cargo s

  • СОЛОВЬЁВsource Dorigin t.mearchive
    Original text (excerpt)

    ❗️ Торговое судно Chelsea 3 атаковано дронами у берегов Болгарии, сообщают СМИ. Судно под флагом Мальты подверглось удару неизвестных беспилотников в исключительной экономической зоне Болгарии, примерно в 14 милях от побережья. В результате атаки ранения получили двое моряков.

NamedChelsea 3Black Sea Shipping ManagementCHELSEA-3AZOV CONCORDSTAR SKY SHIPPINGTopicsnaval dronesnato regionukraine war

Related findings

← Latest findings · All findings from October 2026

History · version 1 · first published · last substantive update

Cite this finding
Robot War (2026). Ukrainian drone strikes hit merchant vessels off Bulgarian coast. Hetzner OSINT, 13 October 2026. https://robotwar.io/osint-hetzner/2026-10-13--ukrainian-drone-strikes-hit-merchant-vessels-off-bulgarian-coast/

@misc{robotwar-2026-10-13--ukrainian-drone-strikes-hit-merchant-vessels-off-bulgarian-coast,
  title = {Ukrainian drone strikes hit merchant vessels off Bulgarian coast},
  author = {Robot War},
  howpublished = {\url{https://robotwar.io/osint-hetzner/2026-10-13--ukrainian-drone-strikes-hit-merchant-vessels-off-bulgarian-coast/}},
  year = {2026},
  note = {Hetzner OSINT finding B1}
}

Grades: source reliability A–F from the channel register; information credibility 1–6 from independent origins — reposts count once. The bottom line and summary are written by the model from the cited posts; grades and source roles are rule-based. Methodology 2026-10-15.v6 · Corrections · JSON · RSS · API performance

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