This purports to be a leaked copy of the Moskva's maintenance report from shortly before the sinking.
Original Russian: https://docs.google.com/document/d/1lBqJ6Op8d3NFb8geSzTxTAyP3Y1_MtRt4DWlXrxX5f0/edit
English translation: https://docs.google.com/document/d/1v5bGYBs2S7vYlrCD8phIEO1WMM3SA2Sj7Rh8Zh4B4t8/edit
There's a short, if slightly hyperbolic summary here: https://www.youtube.com/watch?v=aNEtlMSCiCI
The tl;dr version seems to be that the ship was in extremely poor material condition, hardly any of the defensive systems were actually working and most of the hand held fire extinguishers were apparently missing.