I thought only four Zubrs were ever acquired by the Greeks.
The Hellanic Ship Cephalonia (L180) was purchased used from the Russian Navy and was then upgraded; Ithaca (L181) was never finished by the Russians and was obtained by Greece and then completed by Morye Shipyard in the Ukraine; Corfu (L182) was a new build by Almaz in St. Petersbug. All three of those were commissioned in 2001 into the Hellanic Navy. The fourth vessel, Zackynthos (L183) , was launched in June 2004, also by Almaz's St Petersburg yard, and was commissioned into the Greek Navy in January 2005.
Was a fifth added later that I'm missing?
I thought that all four, however active, were still listed as commissioned within the Hellanic Navy.