Sejong the Great Class (KDX-III Class) South Korean Destroyer
Sejong the Great Class
Destroyer
Other
Basic Information
Name
Sejong the Great Class (KDX-III Class) South Korean Destroyer
Designation
Sejong the Great Class
Alternate Designation
Sejong the Great Class; KDX-III Class
Equipment Type
Destroyer
Manufacturer
—
Date of Introduction
2008
Description
The Sejong the Great-class, also known as KDX-III, are three guided missile destroyers of the Republic of Korea Navy (ROKN). The ROKN has deployed three ships with an option for three more which was taken up in December 2013.
Naval & Littoral Specifications
Crew
350
Beam
21.00 m
Draft
10.50 m
Variants
Sejong the Great
Commissioned: 2008
Status: Active
Yulgok Yi I
Commissioned: 2010
Status: Active
Seoae Ryu Seong-ryong
Commissioned: 2012
Status: Active
System
Alternative Designation
Sejong the Great Class; KDX-III Class
Type
Destroyer
Builder
Hyundai Heavy Industries
Daewoo Shipbuilding & Marine Engineering
Crew
350
Dimensions
Length
135.9 m
Beam
21.0 m
Draft
10.5 m
Displacement, Standard
7,773 tons
Displacement, Full Load
10,455 tons
Propulsion System
Engine Name
4 x General Electric LM-2500
Engine Type
Gas Turbine
Diesel Engine Power
106,560 total shp
Maximum Speed
30 knots (56 km/h; 35 mph)
Range
5,000 nm at 14 knots; 4,500 nm at 20 knots
Gun Weapon Systems
Gun Weapon System #1
Name
1 x OTO Melara 127/64
Type
Naval Gun
Caliber
127 mm
Quantity
1
Crew
Remote Controlled
Elevation
−15°/+83°
Traverse
360°
speed: 40°/s
Rate of Fire
40 rounds/min
Effective Range
100 km with guided VULCANO ammunition
Feed System
Magazine capacity:
66 ready rounds
Gun Weapon Systems #1 Ammunition
Type
Rifle
Caliber
127 mm
INA
INA
Basic Load
INA
Gun Weapon System #2
Name
1 x Goalkeeper CIWS
Type
Close-in-Weapon System (CIWS)
Caliber
30 mm
Quantity
1
Crew
Automated, with human oversight
Barrels
7-barrel (progressive RH parabolic twist, 14 grooves)
Elevation
+85 to −25 degrees at 80 degree/s
Traverse
360 deg
Rate of Fire
70 rounds/second (4,200 rounds/minute)
Muzzle Velocity
1,109 m/s
Effective Firing Range
350 to between 1,500 and 2,000 m
Gun Weapon Systems #2 Ammunition
Type
Rifle
Caliber
30 mm
Shell
30×173mm TP, HEI, MPDS, or FMPDS
Basic Load
INA
Missile Weapon Systems
Launcher
Name
2 x Mark 41 VLS (80 Cells)
Missile System #1
Name
Hyunmoo III
Type
Cruise Missile
Manufacturer
Agency for Defense Development (ADD), Seoul, South Korea
LIG Nex1, Seoul, South Korea
Length
6.25 m
Diameter
0.52 m
Launch Weight
1,450 kg
Payload Weight
315 kg
Engine
solid-propellant rocket boost and turbojet
Range, Hyunmoo IIIA
500 km
Range, Hyunmoo IIIB
1,000 km
Range, Hyunmoo IIIC
1,500 km
Circular Error Probable
5 m
Torpedo System
Launcher
2 x triple 324-mm Mk 32 tubes
Torpedo Name
Blue Shark ASW or Mark 46 Mod 5 torpedoes
Basic Load
46
Fire Control Systems
Gun Fire Control System Name
1 x Mark 160 gun fire control systems
Missile Fire Control System Name
3 x Raytheon SPG-62 MFCR systems
Computerized FCS
Yes
Battle Management System
Yes
Radar Systems
Multi-Phased Radar
1 x Lockheed-Martin AN/SPY-1D(V) Aegis multi-phased radar
Air Search Radar
1 x STX Radar SPS-95K air search; 1 x Northrop Grumman SPW-9B air/surface search; 1 x Thales Nederland MW-08 air/surface search
Surface Search Radar
1 x DRS SPS-67(V) surface search
Navigation Radar
1 x Daewoo DTR-92 navigation
Sonar Systems
Active and Passive Sonar
1 x Lockheed Martin SQQ-89(V) underwater combat system w/SQS-53C bow-mounted
Aircraft Facilities
Aircraft
2 x Super Lynx [carries Sea Skua ASM missiles or U.S. Mark 46, Mod. 5 ASW torpedoes].
Protection
Active Protection System
2 x 330-340 round Matra-Defense Dagaie Mark 2 decoy rocket launching system
Torpedo Decoy
1 x AN/SLQ-25 Nixie torpedo decoy system and 1 x Prairie/Masker noise suppression system
EW
1 x SLQ-200(V) SONATA EW system
NBC Water Washdown System
Yes
Chaff/Flares
4 x Mark 36 SRBOC chaff/flare launchers (6-barrel)
Details
Country of Origin
South Korea
Category
Naval
Naval
Filter Label
S
Classification
Domain
Naval & Littoral
Equipment Status
Active
Dimensions
Length
135.9 m
Width
—
Height
—
Weight
—
Operators (1)
South Korea
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