Direct proof of use
USNI News directly connects the Project 1265 / Sonya-class minehunter to the 2014 Russia-Ukraine War by reporting that the Ukrainian Navy lost a Project 1265 Sonya-class minehunter during Russia's 2014 annexation of Crimea. The same passage places the loss alongside one Project 1258 Yevgenya-class minehunter and two Project 266M Natya I-class minesweepers, framing it as part of Ukraine's mine-countermeasure losses after Crimea.
The available sources support a loss or capture-context claim, not a confirmed mine-clearance sortie, firing incident, or later operational use by Ukraine. USNI's 2014 reporting on the immediate post-Crimea period says Ukraine had left more than 50 assorted vessels in Crimea after the Russian intervention and was recovering some ships through transfers back to Odesa.
Sources: USNI Eastern European Navies, USNI Ukrainian Navy Rebuilding
Timeline
The public record is sparse and centers on the Crimea phase rather than a detailed operational chronology. RussianShips.info lists the two former Ukrainian Project 1265 hulls, Melitopol U330 and Mariupol U331, as decommissioned in 2013 and 2012 respectively, while The Searchers summarizes the Ukrainian Sonya-class service period as 1996-2013.
During the annexation and its aftermath in March-May 2014, USNI News reported that Ukrainian naval vessels were caught up in Russia's seizure of Crimea and that some were later evacuated or returned. The later USNI mine-countermeasure article states the Project 1265 Sonya-class loss occurred during the annexation in 2014.
Sources: RussianShips Project 1265, The Searchers Ukraine Mine Warfare Ships, USNI Ukrainian Navy Rebuilding, USNI Eastern European Navies
Role in the conflict
The Sonya-class entry belongs in the conflict record as a Ukrainian mine-countermeasure capability lost in the Crimea phase of the war. The class was designed for coastal mine warfare, and the loss matters because Ukraine's later Black Sea security problem included keeping shipping channels safe from mines and rebuilding a mine-countermeasure force.
USNI's 2023 article links the 2014 losses directly to Ukraine's later need for mine-countermeasure capacity. It reports new and planned mine-warfare support for Ukraine, then identifies the Project 1265 Sonya-class minehunter as one of the mine-countermeasure vessels lost during the Crimean annexation.
The named-hull record should be treated cautiously. RussianShips.info and The Searchers identify Melitopol U330 and Mariupol U331 as former Ukrainian Project 1265 ships, but both sources place their active Ukrainian service as ending before 2014. This page therefore does not identify a specific Project 1265 hull as the confirmed 2014 loss unless a stronger source does so.
Sources: USNI Eastern European Navies, RussianShips Project 1265, The Searchers Ukraine Mine Warfare Ships