Ukraine hit and sank a Russian Black Sea Fleet patrol ship off occupied Crimea in an overnight attack, the Ukrainian military said on Tuesday. Meanwhile, President Zelenskyy shared a video on his X page.

He said: "Today, I would like to thank all of our warriors and units who are restoring security and Ukraine's control over our skies and the Black Sea. Ukraine has already proven its capabilities and strength. The number of destroyed Russian aircraft, as well as our warriors' achievements against the Russian fleet, serve as proof of this. There are no safe harbors for Russian terrorists in the Black Sea. And there will be none. Just as there will be no safe space in the skies for them if Ukraine has sufficient strength. This refers to both partner deliveries and domestic manufacturing."

The Ukrainian military intelligence agency said a special unit called Group 13 had fired Magura V5 maritime drones at the Sergey Kotov near the Kerch Strait, which connects the Sea of Azov to the Black Sea. 

It said on the Telegram messaging app that the vessel had sustained damage to the stern, starboard and port sides, at an estimated cost of $65 million. 

“Right now this ship is on the seabed as a result of fire damage by unmanned boats,” navy spokesperson Dmytro Pletenchuk said in televised comments, adding that a helicopter may have been on board.