Ukraine received 5V55U surface-to-air missiles for S-300 systems during Russia's full-scale invasion, with the clearest public subtype-specific evidence coming from SIPRI-derived transfer data rather than from identified battlefield firings.
| Claim | Sources |
|---|---|
| Ukraine received 45 5V55U missiles for S-300 missile systems during Russia's full-scale invasion. | Sources: Jamestown Ukrainian Air Defense, SIPRI Arms Transfers Database |
| The 5V55U transfer context is linked to Slovakia's April 2022 S-300PMU supply to Ukraine. | Sources: U.S. Defense Slovakia S-300, TWZ Slovakia S-300 Transfer |
| Open sources do not separately identify individual 5V55U firings in Ukraine. | Sources: Jamestown Ukrainian Air Defense |
Timeline
U.S. defense reporting confirmed Slovakia's decision to supply an S-300 air-defense system to Ukraine; The War Zone identified the donated system as Slovakia's S-300PMU.
Sources: U.S. Defense Slovakia S-300, TWZ Slovakia S-300 Transfer
Jamestown cited SIPRI data listing 45 5V55U missiles for S-300 missile systems among munitions Ukraine received during Russia's full-scale invasion.
Sources: Jamestown Ukrainian Air Defense, SIPRI Arms Transfers Database
The 5V55U appears in the 2014 Russia-Ukraine War record as a transferred Ukrainian air-defense munition. Jamestown, citing SIPRI Arms Transfers Database data for partner supplies during Russia's full-scale invasion, listed 45 5V55U missiles for S-300 missile systems among munitions received by Ukraine.
The transfer is tied to Ukraine's S-300 air-defense force rather than to a separate public record of individual 5V55U launches. U.S. defense reporting confirmed Slovakia supplied an S-300 air-defense system to Ukraine on April 8, 2022, and The War Zone identified the donated Slovak system as the country's S-300PMU.
Sources: Jamestown Ukrainian Air Defense, SIPRI Arms Transfers Database, U.S. Defense Slovakia S-300, TWZ Slovakia S-300 Transfer
Slovakia's S-300 transfer became public on April 8, 2022, when U.S. defense reporting said Slovakia would supply the system and receive a U.S. Patriot deployment in return. Same-day specialist reporting described the package as Slovakia's only Soviet-era S-300PMU system and said it was going to the Ukrainian military.
By June 2024, Jamestown's review of Ukrainian air-defense munitions cited SIPRI data that included 45 5V55U missiles for Ukrainian S-300 systems among partner-supplied munitions during the full-scale invasion.
Sources: U.S. Defense Slovakia S-300, TWZ Slovakia S-300 Transfer, Jamestown Ukrainian Air Defense
The 5V55U is best understood in this conflict as ammunition for the S-300PMU branch of Ukraine's layered air-defense network. Ukraine already operated S-300-family systems, and additional Soviet-designed air-defense equipment was valuable because Ukrainian crews, launchers, and support structures could absorb familiar systems more quickly than wholly new Western systems.
The public evidence supports transfer and fielding for air defense, not a verified incident log of 5V55U shots. Sources separately discuss Ukraine's heavy wartime air-defense demand and stock depletion, but the available open material does not isolate individual interceptions or attempted interceptions by the 5V55U subtype.
Sources: Jamestown Ukrainian Air Defense, TWZ Slovakia S-300 Transfer
