"The Ukrainian Armed Forces, together with the Defence Ministry's intelligence unit, destroyed the Caesar Kunikov large landing ship," the military said in a social media message, as cited by the Reuters news agency.
"It was in Ukraine's territorial waters near Alupka at the time of the hit," the Ukrainian military added.
The Black Sea resort town of Alupka lies not far from Yalta on the southern edge of Crimea, which Russia seized from Ukraine in 2014, Reuters reported.
Ukraine's GUR military intelligence agency said in a statement that the Russian warship "received a critical breach on the port side and started sinking."
The Ukrainian military says it has destroyed 25 Russian naval vessels and one submarine since the start of the war, according to Reuters.
Russia invaded Ukraine on February 24, 2022, launching the largest military campaign in Europe since World War II.
Wednesday is day 721 of Russia’s war on Ukraine.
(gs)
Source: Reuters, ukrinform.net, IAR, PAP