Russia has reportedly deployed the Kommuna salvage vessel in an attempt to salvage parts of the Moskva. Note the DSRV on the deck
The Kommuna was laid down in 1912, launched in 1913, and commissioned in 1915. It is the sole “active” member of the Imperial Fleet. The Kommuna was a purpose-built catamaran hull with several heavy-lift gantry cranes spanning the well-deck
Conjecture on the mission ranges from attempting to recover cryptological equipment to possible nuclear warheads on the missiles. Regardless, raising some or all of the flagship could be a nationalistic boost.
All that gantry-work looks like a job for 3D printing. It reminds me of the support structures found on many available 3D pieces