Ukraine's Navy claimed to have "destroyed" a Russian vessel on Thursday morning in the port of Berdyansk on the Black Sea southwest of Mariupol. 

"A large paratroop ship ‘Orsk’ of the black sea fleet of occupiers was destroyed in the occupied Russian port Berdyansk," the country's Navy announced on Facebook. "Glory to Ukraine!"

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"The occupiers are burning well," the Armed Forces of Ukraine wrote on Twitter.

While Russia has superior forces in Ukraine, the defenders have put up a surprisingly strong resistance, and President Volodymyr Zelenskyy has maintained that his besieged country will prove triumphant in the war.

Navy explosion (Ukraine Navy)

On Thursday morning, the Armed Forces of Ukraine claimed that Russia's total combat losses from Feb. 24 to March 23 amounted to about 15,800 people, 530 tanks, 1,597 armored combat vehicles, 280 artillery systems, and 47 anti-aircraft weapons.