 Complete the following phrase:  The four s of the Hellenic Navy of Greece are 3200-ton frigates of the MEKO 200HN design. The first of the four, Hydra was built by Blohm  Voss in Hamburg and commissioned in 1992. The other three were constructed at the Hellenic Shipyards Co. at Skaramagas. Spetsai was commissioned in 1996, Psara in 1998 and Salamis in 1999. Three Hydra-class frigates were deployed in support of 