- 2 * General Electric LM-2500
- 2 * MTU 12V 956 TB82
- Signaal DA-08 air surveillance radar
- AN/SPS-10C navigation radar
- ST-1802 fire control radar
- Signaal PHS-32 hull-mounted sonar
- TB-261K towed sonar
- ULQ-11K ESM/ECM suite
- 2 * Mark 36 SRBOC 6-tubed chaff/flare launcher
- 2 * 15-tube SLQ-261 torpedo acoustic countermeasures
- 8 * Harpoon (2 quadruple launchers) anti-ship missile
- 6 * 324 mm (12.8 in) Blue Shark torpedo (2 triple tubes)
- 2 * Otobreda 76 mm (3 in)/62 cal. gun
- 3 * Otobreda 40 mm (1.6 in)/70 cal. (2 twin) compact CIWS
ROKS Seoul (FF-952) is the second ship of the Ulsan-class frigate in the Republic of Korea Navy. She is named after the city, Seoul.
In the early 1990s, the Korean government plan for the construction of next generation coastal ships named Frigate 2000 was scrapped due to the 1997 Asian financial crisis. But the decommissioning of the Gearing-class destroyers and the aging fleet of Ulsan-class frigates, the plan was revived as the Future Frigate eXperimental, also known as FFX in the early 2000s. ROKS Seoul (FF-952) is an Ulsan-class (Flight I) guided missile frigate built by Hyundai Heavy Industries Co. She was decommissioned on 31 December 2015 and moored at Seoul Battleship Park, in her namesake city as a museum ship.