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WarshipsActive: 4
Guided-missile destroyer
Sejong the Great-class destroyer is a guided-missile destroyer. It was built by Hyundai Heavy Industries Daewoo Shipbuilding & Marine Engineering.
South KoreaSejong the Great-class destroyer
U.S. Navy photo by Mass Communication Specialist 1st Class Brandon Raile · Public domain · Resized · Public domain · Source ↗ · ModifiedHyundai Heavy Industries Daewoo Shipbuilding & Marine Engineering
Republic of Korea Navy
Chungmugong Yi Sun-sin class
KDDX-class destroyer
$923 million per ship
6
2
4
4
Guided-missile destroyer
Batch I: 7,650 tons standard displacement 10,000 tons full load Batch II: 8,200 tons standard displacement 12,000 tons full load
Batch I: 166 m (544 ft 7 in) Batch II: 170 m (557 ft 9 in)
21.4 m (70 ft 3 in)
6.25 m (20 ft 6 in)
4 × General Electric LM2500 COGAG ; 2 × shafts; 100,000 shp (75,000 kW) produced power
exceeds 30 knots (56 km/h; 35 mph)
5,500 nmi (10,200 km; 6,300 mi)
30 days
300
AN/SPY-1D(V) multi-function radar AN/SPG-62 fire control radar DSQS-21BZ-M hull-mounted sonar SQR-220K towed array sonar system Sagem Infrared Search & Track (IRST) system
LIG Nex1 SLQ-200K Sonata electronic warfare suite
Batch I: 1 × 5-inch (127 mm)/L62 caliber Mk 45 Mod 4 naval gun 1 × 30 mm Goalkeeper CIWS 1 × RAM Block 1 CIWS 16 × SSM-700K Haeseong anti-ship missile 2 × triple torpedo tubes for: K745 Blue Shark torpedo 1 × 48-cell, 1 × 32-cell (80 cells) Mk 41 VLS for: SM-2 Block IIIB/IV 1 × 48-cell K-VLS for: K-ASROC Red Shark Hyunmoo III land attack cruise missiles K-SAAM short range air defence missiles KM-SAM air defence missiles Batch II: 1 × 5-inch (127 mm)/L62 caliber Mk 45 Mod 4 2 × 20mm Block 1B Phalanx CIWS 8 × SSM-700K Haeseong anti-ship missile 2 × triple torpedo tubes for: K745 Blue Shark torpedo 1 × 48-cell Mk 41 VLS for: SM-2 Block IIIB/IV SM-3 NTW Block IB SM-6 Block I 1 × 16-cell K-VLS for: K-ASROC Red Shark Hyunmoo III land attack cruise missiles K-SAAM short range air defence missiles KM-SAM air defence missiles 1 × 24-cell K-VLS II for: L-SAM long range air defence missiles Hyunmoo IV-2 ballistic missiles
2 × Super Lynx or SH-60 Seahawk
Hangar and helipad
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Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 28 Sept 2026 | 166 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 166 m | Wikipedia contributors | approved |
Sejong the Great-class destroyer equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
South KoreaNaval inventory of the source class and listed configurations; excludes orders and construction. Source-year holdings, not immediately deployable strength.