Chi Yang Class
In the 1990s the US agreed to transfer 8 Knox class frigates to the Republic of China Navy (ROCN). The ROCN planned to upgrade these ships with new air defense, anti-submarine, and electronic warfare capabilities, including new radar, towed active sonar, CIWS guns, VL air defense missiles, active/passive electronic warfare systems, etc. However, due to budget considerations and the acquisition of newer ships, only a few upgrades were implemented. These frigates were renamed the Chi Yang class and assigned to the ROCN 168 Patrol Squadron.
By 2005 the ROCN had removed several systems from the retired Gearing class upgraded World War II-vintage destroyers and transferred them to the Chi Yang class FFG. These systems include SM-1MR Standard missile in box launchers, H-930 modular combat system, and DA-08 air/surface search radar (with speculations that the Mk 75 76/62 rapid-fire gun might also replace the older Mk 42 127 mm/5" gun in the future). Each Chi Yang class frigate has 10 SM-1 missiles installed in two forward twin box launchers on top of the helicopter hangar, and two triple box launchers installed between the stack and the hangar, pointing to port and starboard.
The anti-submarine capability of the Chi Yang class FFG is provided by its SQS-26 bow-mounted sonar, SQS-35(v) VDS, SQR-18(v)1 passive TAS, MD500 ASW helicopter, Mk-16 8-cell Harpoon/ASROC box launcher, and 4 x Mk46 324 mm torpedoes. While on ASW patrol, the frigate will carry 2 x Harpoon SSMs and 6 x ASROCs in its Mk-16 box launcher.
Read more about this topic: Knox Class Frigate
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