A Twitter user dubbed “Capt_Navy” who is a retired Russian Navy officer and lives in Sevastopol was the first to share the video of the (possibly) damaged ship while being towed. The ship was identified as Project 775/Ropucha I-class large landing ship Olenegorskiy Gornyak (SDK-91).
The claimed damage on the port side of the ship seemed significant which caused the ship to roll more than 40-50 degrees to the port side. Still, there was no smoke on the ship indicating an explosion. Here is a short footage and some photos of the damaged Russian ship accompanied by the rescue vessels/tugs.
Ukraine started to use kamikaze USVs in the war since the 2022 autumn. The first assault, which occurred on October 29, 2022, was shocking for the Russian Black Sea Fleet as it was not expected. An Admiral Grigorovich-class frigate and mine countermeasure (MCM) ship were reportedly hit by the Ukrainian USV during the attack.
After the first attack, Ukraine conducted a few more at Sevastopol Naval Base, Kerch Bridge, and several Russian units in the Black Sea. While the first attacks were concluded with great success, Russian units were able to repel the kamikaze USV attacks with machine guns. While the analysts were thinking that the Russian fleet has been learning from previous mistakes, Ukraine seems to achieve significant damage on a landing ship, which is important for the Russian Black Sea Fleet in terms of logistic transportation.
[UPDATE] Here is another video showing the possible attack moment:
