The official Twitter channel of the Defence Intelligence of Ukraine has released a video showing Ukrainian maritime drones striking a Russian vessel.
The ship in question, as reported by the Twitter account, is the missile corvette “Ivanovec” (954) of the Tarantul II class. It is a unit with a full load displacement of 469 tonnes and a crew of 41. These ships are armed with anti-ship and anti-aircraft missiles.
From what is seen in the video, the ship appears to have been sunk (in the last frames of the video, the bow of the ship can be seen sinking).
We do not know where or when exactly the action was carried out, but it is believed to be one of the worst Russian losses in the Black Sea, possibly the largest victims of Ukrainian maritime drones.