I think at this stage we cannot definitively identify what the hull may or may not be, due to the pictures being unclear and a lack of obvious chronology yet.
The lack of any credible rumours saying anything to identify any modules or hulls that we've seen, doesn't help us either.
I think it is worthwhile for us to continue observing these drydocks, but appropriate caution should be done with acknowledgement that there's no reason to confidently declare anything as 076 or naval just yet.
I also personally feel that pictures and discussion shouldn't be shared too much outside of the forum until we know what is going on, simply due to outsiders often being unable to treat things with nuance and context.