A 4 year refurb. according to the Wiki ... I can only assume this was constrained by finances, as I'm surprised to see the missile armament (ssn19 shipwrecks?) was not replaced with something more compact and enabling a greater load out.
Does anyone have any details as to the refurbishment activities carried out? ie was it purely a refurb - addressing wear and tear? or were any upgrade activities undertaken?
since you quoted me ... I didn't translate the description I had originally found in
because I of course thought several outlets would translate (now I see I didn't even bother with posting the Russian link back then);
now I did a google search and, to my surprise, this didn't seem to be the case (??) ... I'm really unsure if I should do it, so just very briefly:
the activities started in 2011, concerned the propulsion, electricity generation, internal communications, and general systems (these I imagine as for example "the drainage, dewatering, fire safety and other systems of the vessel" from the one year old article
);
as for the missiles, I think she's gotten the Vulkans
"improved Sandboxes"
but that's my interpretation, not something from the article I quoted ... common! there's has to be a translation available in Internet