(Bloomberg) — Ukraine’s military said it destroyed a Russian warship off the south coast of Crimea, the latest in a string of operations targeting Kremlin navy vessels in the Black Sea.

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Ukrainian military intelligence said a special unit sank the Caesar Kunikov, a Russian large landing ship off Alupka in occupied Crimea, according to a video published by Ukraine’s military intelligence on the X social media platform. Naval drones were used in the attack, it said.

The Russian vessel “was upgraded to a submarine,” the Defense Ministry said in a separate X post. The landing ship was in Ukrainian waters, it said.

Ukraine has been intensifying attacks against Russia’s Black Sea Fleet in the last few months using explosive-laden naval drones, prompting Moscow to relocate part of the fleet away from the peninsula, which Moscow annexed in 2014.

President Volodymyr Zelenskiy’s military says it’s destroyed 24 Russian military vessels and a submarine since the start of Russia’s invasion of Ukraine in February 2022.

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