The Naresuan-class frigate (Thai: ชุดเรือหลวงนเรศวร) is an enlarged modified version of the Chinese-made Type 053 frigate with Western weaponry, cooperatively designed by the Royal Thai Navy and China but built by the China State Shipbuilding Corporation in Shanghai.

On 3 June 2011, Saab announced that it was awarded a contract for the upgrading of the two Naresuan-class frigates.

The scope of the upgrade will include Saab's 9LV MK4 combat management system, Sea Giraffe AMB, CEROS 200 fire control radar, EOS 500 electro-optics system and data link systems for communications with the newly acquired Royal Thai Air Force Erieye surveillance aircraft.

[1] Media related to Naresuan class frigate at Wikimedia Commons

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