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DDX vs Sejong the Great

DDX vs Sejong the Great at a glance — displacement 13,500 vs 10,000 tons, length 180 vs 166 m, crew 251 vs 300.

Specifications
DDX Sejong the Great
Origin 🇮🇹 Italy 🇰🇷 South Korea
Category Destroyer Destroyer
Type Guided-missile destroyer Guided-missile destroyer
Manufacturer Orizzonte Sistemi Navali (Fincantieri, Leonardo) Hyundai Heavy Industries
Year introduced 2033 2008
Number built NA 4 units
Estimated unit price NA $923 million
Displacement 13,500 tons 10,000 tons
Maximum speed NA 30.0 knots
Range 4,000 nm 5,500 nm at 20 knots
Length 180.0 m 166.0 m
Beam NA 21.4 m
Crew 251 300
Performance Radar Chart
Armament & Systems
DDX Sejong the Great
Armament
  • ~80-cell Sylver vertical launching system (A50 and A70 modules), as reported before the 2026 contract
  • Aster 30 Block 1NT and Aster 15 surface-to-air missiles (MBDA)
  • MdCN land-attack cruise missiles
  • Teseo Mk2/E anti-ship missiles
  • 1 × Leonardo 127/64 mm gun (Vulcano guided ammunition)
  • 3 × Leonardo 76/62 mm guns (Strales/DART)
  • 2 × triple torpedo tubes for MU90 Impact torpedoes
  • 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
  • 80-cell Mk 41 VLS for SM-2 Block IIIB/IV
  • 48-cell K-VLS for K-ASROC Red Shark, Hyunmoo III, K-SAAM, KM-SAM
Propulsion -- 4 × General Electric LM2500 COGAG; 2 × shafts; 100,000 shp (75,000 kW) produced power
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Frequently Asked Questions

Which has greater displacement, the DDX-class or Sejong the Great-class?
The DDX-class has greater displacement at 13,500 tons compared to the Sejong the Great-class's 10,000 tons.
Which is faster, the DDX-class or Sejong the Great-class?
The Sejong the Great-class is faster with a maximum speed of 30 knots compared to the DDX-class's 0 knots.
Which has longer range, the DDX-class or Sejong the Great-class?
The Sejong the Great-class has a longer range at 5,500 nautical miles compared to the DDX-class's 4,000 nautical miles.
Which is longer, the DDX-class or Sejong the Great-class?
The DDX-class is longer at 180.0 meters compared to the Sejong the Great-class's 166.0 meters.
How many crew members do the DDX-class and Sejong the Great-class have?
The Sejong the Great-class has a larger crew complement of 300 compared to the DDX-class's 251 crew members.