Strawman is your post #10 “If the ship was struck by missiles”
Perhaps you believe that the Flag ship of the Russian Black sea fleet Moskva has taken out two Ukrainian Neptune missiles with it’s hull. After a stunning maneuver the Moskva skillfully placed itself into the path of the incoming Ukrainian missiles. The two missiles were utterly destroyed and can no longer be used by the Ukrainians.
The Moskva is on a “special underwater operation” looking for Ukrainian crabs and jellyfish after transferring to the submarine flotilla. They will sort them out those pesky Ukrainian crabs.
Very likely scenario. The only one that makes sense.