t seems that Ukrainian forces successfully targeted Russian ships in the port of Berdyansk, which reportedly have been offloading military equipment during the last few days. Berdyansk is west of Mariupol, on the Sea of Azov. More will follow in an INTSUM as I learn some details, but at least one ship, thought to be an Alligator-class landing ship, suffered from a catastrophic explosion. That hull is likely a total loss.
Here's some excellent footage of the aftermath. You can notice some tugboats getting out of dodge, and then two larger Russian ships doing the same, one of which appears to be on fire. The ship in the center continued to burn and explode throughout the video. It is unlikely that ship will be saved.