💥 Attack

Ukrainian SSO elements struck the Russian Grad Buyan-M-class corvette on Lake Onega, Republic of Karelia, damaging the vessel's power plant compartment.

Republic of Karelia
Likely Reported by 3 independent sources
Institute for the Study of War Kyiv Independent Censor.NET

Two or more independent sources agree on the core facts. Additional sources would further strengthen this assessment.

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Source Reports

What each source reports. "Source tone" reflects the language used by the outlet — it is not an independent verification.

Ukrainian SSO struck Russian corvette on Lake Onega, damaging power plant compartment

Kyiv Independent → Source tone: likely

Ukrainian Special Operations Forces struck the Russian missile ship Grad on Lake Onega at 04:31 a.m. local time on Oct 4

Kyiv Independent → Source tone: likely

The missile ship was travelling from the Baltic Sea to the Caspian Sea

Kyiv Independent → Source tone: likely

The damage was to the right side of the ship's power plant compartment

Kyiv Independent → Source tone: certain

The Buyan-M-class ship is a carrier of Kalibr cruise missiles capable of operating in shallow waters

Censor.NET → Source tone: certain

At 04:31 a.m. on the morning of October 4, 2025, as a result of the successful actions of one of the units of the Special Operations Forces in Lake Onega (Republic of Karelia), the small Grad missile ship (side number 575) of project 21631 "Buyan-M" was hit.

Censor.NET → Source tone: certain

The missile carrier was heading from the Baltic to the Caspian Sea. The hit occurred in the right part of the ship's power plant compartment.

Censor.NET → Source tone: certain

The damaged Grad is one of the newest and most modern ships of the Russian Federation, commissioned into the Russian Baltic Fleet on December 29, 2022.

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Extraction metadata

Extracted: 2026-05-30T04:15:39.359Z

Source story: russian-offensive-campaign-assessment-october-4-2025