Greece Navy's to upgrade its four Hydra class MEKO frigates.

According to information published by Ekathimerini on April 8, 2023, the Arms Committee of the Greek Parliament has approved the mid-life upgrade program for the Hellenic Navy’s four MEKO frigates.
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Hellenic Navy's Hydra class frigate Spetsai. (Picture source: US Navy)

The Hydra-class frigate is a type of warship that displaces 3,360 tons in standard conditions and 4,000 tons when fully loaded. It is 117.5 meters (385 ft 6 in) long, 14.8 meters (48 ft 7 in) wide, and has a draught of 6.0 meters (19 ft 8 in).

The frigate is powered by two shaft CODOG propulsion systems, comprising two General Electric LM2500 gas turbines, with a total output of 60,656 horsepower (45,231 kW), and two MTU 20V 956 diesel engines that generate 10,040 horsepower (7,490 kW).

It has a maximum speed of 31 knots (57 km/h; 36 mph) when using its gas turbine, and 21 knots (39 km/h; 24 mph) when using diesel only. The frigate has a range of 4,100 nautical miles (7,600 km; 4,700 mi) when travelling at a speed of 18 knots (33 km/h; 21 mph).

The Hydra-class frigate can accommodate a crew of 173, comprising 22 officers and 151 enlisted personnel. It is equipped with various sensors and processing systems, including a Signaal MW08 air search radar, a Signaal DA08 air surface radar, two Signaal STIR fire control radars, a Racal Decca 2690 BT navigation radar, a Raytheon SQS-56/DE 1160 hull-mounted and VDS sonar, an SLQ-25 Nixie torpedo decoy, an Mk XII Mod 4 IFF radar, two Signaal Mk 73 Mod 1 radars for ESSM, and a Signaal STACOS Mod 2 combat data system.

The frigate is also equipped with an Argo AR 700 ESM system, a Telegon 10 ESM system, an Argo APECS II ECM system, and four SCLAR decoy launchers for electronic warfare and decoys.

The Hydra-class frigate is armed with one Mk 45 Mod 2A 5" gun, two Mk15 Phalanx 20 mm CIWS, two Mk141 2×4 Harpoon missile launchers, a Mk 48 Mod 2 vertical launcher for 32× RIM-162 ESSM, and two Mk32 Mod 5 2×324mm T/T for Mk46 torpedoes. It also has a hangar for one Sikorsky S-70B-6 Aegean Hawk helicopter.