Sejong the Great class Guided missile destroyer

[Zarvan]

The Sejong the Great class are among the largest, heaviest, and the most technically advanced destroyers built to date



Entered service 2008
Crew 300 men
Sea endurance ?
Dimensions and displacement
Length 165 m
Beam 21 m
Draught 6 m
Displacement, standard 7 700 tons
Displacement, full load 11 000 tons
Propulsion and speed
Speed 30+ knots
Range 10 186 km at 20 knots
Propulsion 4 x General Electric LM2500 gas turbines driving 2 shafts with 100 000 shp
Airwing
Helicopters 2 x Super Lynx of SH-60 Seahawk
Armament
Artillery 1 x 127 mm/62 Mk-45 Mod 4, 1 x 30 mm Goalkeeper CIWS
Missiles 1 x RAM Block 1, 16 x SSM-700K Hae Sung AShM, RIM-66M-5 Standard SAM, Hyunmoo III cruise missiles, Red Shark SUwM
Torpedoes 6 x K745 Blue Shark torpedoes


The Sejong the Great class destroyers are among the most advanced warships afloat today. They were developed under the KDX-III program, which sought to provide the South Korean Navy with a world-class destroyer capable of meeting virtually any threat at sea, on land, or in the air.

The design of these vessels borrows heavily from features of the American Arleigh Burke class and the Japanese Atago class, and shares numerous common components and systems as well, but has a largely original construction and composition. Moreover, with a combat displacement of some 11 000 tons (practically making these vessels Cruisers), the Sejong the Great class destroyers are substantially heavier. The wider hull flare and bulkier superstructure are also very different from the Arleigh Burke class, though the Atago class has a similar shape. Also as with the Arleigh Burke class, the structural components (hull, bulkheads, decks, hatches, etc.) of the Sejong the Great class are almost entirely steel in composition.

There are three vessels in the class; the DDG-991 Sejong the Great, DDG-992 Yulgok Yi I, and DDG-993 Seoae Ryu Seong-ryong. Named after prominent figures of the Joseon Dynasty, they were commissioned in 2008, 2012, and 2014, respectively. The DDG-991 Sejong the Great and DDG-993 Seoae Ryu Seong-ryong were constructed by the Hyundai Heavy Industries (HHI) shipyard in Ulsan, while the DDG-992 Yulgok Yi I was constructed by the Daewoo Shipbuilding & Marine Engineering shipyard in Opko.

Likely owing to the use of only fully-developed technologies and subsystems, the Sejong the Great class destroyers cost only $923 million per-vessel. It is worth noting that his price tag makes these among the most inexpensive Aegis warships ever constructed.

Sensors consist of four AN/SPY-1D(V) phased array radar sets, an AN/SPG-62 fire control radar, a DSQS-21BZ hull mounted sonar, an MTeQ towed array sonar system, and a Sagem Infrared Search & Track (IRST) system. The AN/SPY-1D(V) is capable of being used as a passive radar, and the Sagem IRST is already a passive system, giving the Sejong the Great class immense situational awareness capabilities even at a maximum Emissions Control (EMCON) state, giving it substantial stealth capability.

Propulsion for the Sejong the Great class is four General Electric LM2500 gas turbines driving two shafts with 100 000 shp. Additional power for the ship's systems is provided by three Rolls-Royce AG9140RF gas turbine generators, as the electrical power demand of the class' systems is too great for the LM2500's alternators alone. Enough fuel bunkerage is provided for a 10 186 km (5500 nm) range at 20 knots, and the full speed of the class is approximately 30 knots. Two rudders are fitted, allowing for a relatively small minimum turning circle.

The weapons, sensors, fire controls, propulsion, and other systems are fully-automated, and networked together via the Aegis combat information system; the version currently used in the Sejong the Great class is Baseline 7 Phase 1. This system allows the ship to detect, identify, evaluate, and engage targets with no input from the crew, other than the decision to engage. The system can also display several-thousand contacts, and track and/or engage up to 100 simultaneously. It is also possible for the crew to operate these systems manually, as in earlier guided missile warships, without using the Aegis system. The class also has a Maritime Air Support Operation Centre (MASOC) system, allowing it to coordinate the operations of all friendly tactical aircraft in the vicinity.

The stern is covered by a large helicopter landing pad, and there are two hangars. The total capacity is two helicopters, which can be expanded to three, if an additional helicopter is kept on the landing pad. The maintenance and storage facilities have space and equipment for either the Super Lynx orSH-60 Seahawk.

The missile battery of the Sejong the Great class is exceptional. Not even including the 21-cell RAM launcher, or even the 16 Hyunmoo III anti-ship missiles, they carry an incredible 128 missiles in three different VLC launch cell pads (one forward with 48 cells, one aft with 32 cells, and another 48-cell pad aft). This is a much larger stock of missiles than the 96 cells found on the Arleigh Burke class, though it is still second-place to the Kirov classbattlecruisers (which have the world's largest missile battery, at 352 missiles).

The variety of missiles carried by the Sejong the Great class is staggering as well. These include the RIM-66M-5/SM-2ER Block IV Standard SSM-700K Haeseong with a range of 240 km, the Hyunmoo IIIB land attack cruise missile with a range of 1 000 km, the SSM-700K Haeseong anti-ship missile with a range of 150 km, the Red Shark (also called the K-ASROC) anti-submarine missile with a 18.5 km range, and the RIM-116B RAM surface to air missile with a range of 7.4 km. The K745 Blue Shark torpedo has an effective range of 18.5 km.

Though only two gun systems are carried, these are also quite formidable. The Mk-45 Mod 4 127-mm/62 dual-purpose gun fires 30.7 kg projectiles at a rate of fire of 20 rounds/minute, with a maximum range of 38.4 km, and is capable of engaging land targets, ships, aircraft, and even missiles. The Goalkeeper 30 mm CIWS fires 0.4 kg projectiles at up to 4 200 rounds/minute, with an effective range of 3 km, and can be used against watercraft as well as aircraft and missiles.

The complete ammunition loadout for the Sejong the Great class includes (but is likely not limited to) 680 127 mm shells, 1 190 30 mm shells, 21 RAM missiles, 6 Blue Shark torpedoes, and 16x SSM-700K Hae Sung missiles. The VLS load-out is variable, but the standard configuration consists of 80 SM-2 Standard missiles, 32 Hyunmoo IIIB missiles, and 16 Red Shark missiles. The loadout for the additional munitions carried by the helicopters is unknown.

In 2012, the ROKN formally made a request to the government for three additional Aegis warships, with an eye toward having them in commission by 2027. If these vessels are authorized, it is likely that they will be additional Sejong the Great class Destroyers, or possibly an evolved version of the design.

The manufacturers retain the ability to construct additional Sejong the Great class, but it is unknown as of late 2015 if any other will be ordered by the ROKN, and very unlikely that KDX-III type vessels would be offered for export, as many of its key technologies are classified and/or barred from further proliferation by the US government.

Barring unforeseen developments, the Sejong the Great class destroyers will remain in service until at least the mid-2030s.



Related Vessels



Arleigh Burke class: US Destroyer class, and the design basis of the Sejong the Great class.

Kongo class: Japanese variant of the Arleigh Burke class.

Atago class: Japanese destroyer class, with a similar design to the Sejong the Great class.

Type 052 class: Series of Chinese destroyers, generally considered to be comparable in capability to Aegis warships. They are also similar in layout to the Sejong the Great class.

Type 055 class: New class of Chinese destroyers in development, with a similar design to the Sejong the Great class.



Name
Laid down
Launched
Commissioned
Status
Sejongdaewang (Sejong the Great) (DDG-991)
?
2007
2008
active, in service

Yulgok Yi I (DDG-992)
?
2008
2012
active, in service

Seoae Ryu Seong-ryong (DDG-993)
?
2011
2014
active, in service

Home > Naval Forces > Sejong the Great class
Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the GreatClass
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class Images
@Rashid Mahmood @fatman17 @Nihonjin1051

 

[Ankit Kumar]

Less than 1 billion dollars for this is damm too cheap.

 

[Baybars Han]

South Korea has cruise missile with 1000 km range? Great ship.

 

[Nike]

this is one of the most formidable floating missile battery system ever commissioned. The South Korean know well where is to find formidable technology system and including them into one of the most potent fighting systems.

 

[mike2000 is back]

It's a great warship indeed. Jeez.......to think how far the Koreans have come, just 5 decades ago they were poorer than sub-Saharan countries like Ivory coast/Cameroon/Gabon etc. Now look at where they are today. Shows that with hard work,dedication and visionary leaders a country can achieve miracles, instead of sitting down their lazy *** and blaming foreign powers for all their ills like some people in many developing countries do.
Anyway, good one Korea, hopefully the paranoid communist north will wake up from its delusional commie dreams and embrace globalization/capitalism/open up for their own good/well being.

 

[sEoulman556]

South Korea has cruise missile with 1000 km range? Great ship.

The Hyunmoo-3B cruise missile has a range of 1,000 km, while the Hyunmoo-3C has 1,500 km range. Hyunmoo cruise missiles will be useful against Japanese civilian and military targets should the Japanese try to do anything stupid regarding the Dokdo islets. In addition to Hyunmoo cruise missiles being armed on Sejong-class DDGs, they are also going to be armed on KSS III submarines when the first KSS III production variant is commissioned by the ROKN in 2020.

Hyunmoo - Wikipedia, the free encyclopedia

DSME & ROK Navy cut first steel of future KSS-III (Jangbogo III) heavy diesel-electric submarine

 

[Nike]

They have several class of Destroyer and Frigate, most of them is heavily armed and have indigenous system on it

South Korean other Destroyer Class

Chunmugang Yi Sun Shin Class aka KDX II, there is order for KDX II flight II equipped with Aegis like system and more indigenous system than their predecessor

Gwanggaeto Class aka KDX I

The Hyunmoo-3B cruise missile has a range of 1,000 km, while the Hyunmoo-3C has 1,500 km range. Hyunmoo cruise missiles will be useful against Japanese civilian and military targets should the Japanese try to do anything stupid regarding the Dokdo islets. In addition to Hyunmoo cruise missiles being armed on Sejong-class DDGs, they are also going to be armed on KSS III submarines when the first KSS III production variant is commissioned by the ROKN in 2020.

Hyunmoo - Wikipedia, the free encyclopedia

DSME & ROK Navy cut first steel of future KSS-III (Jangbogo III) heavy diesel-electric submarine

South Korean right now trying to sell their KDX II variants to Indonesia

 

[truthseeker2010]

The Sejong the Great class are among the largest, heaviest, and the most technically advanced destroyers built to date



Entered service 2008
Crew 300 men
Sea endurance ?
Dimensions and displacement
Length 165 m
Beam 21 m
Draught 6 m
Displacement, standard 7 700 tons
Displacement, full load 11 000 tons
Propulsion and speed
Speed 30+ knots
Range 10 186 km at 20 knots
Propulsion 4 x General Electric LM2500 gas turbines driving 2 shafts with 100 000 shp
Airwing
Helicopters 2 x Super Lynx of SH-60 Seahawk
Armament
Artillery 1 x 127 mm/62 Mk-45 Mod 4, 1 x 30 mm Goalkeeper CIWS
Missiles 1 x RAM Block 1, 16 x SSM-700K Hae Sung AShM, RIM-66M-5 Standard SAM, Hyunmoo III cruise missiles, Red Shark SUwM
Torpedoes 6 x K745 Blue Shark torpedoes


The Sejong the Great class destroyers are among the most advanced warships afloat today. They were developed under the KDX-III program, which sought to provide the South Korean Navy with a world-class destroyer capable of meeting virtually any threat at sea, on land, or in the air.

The design of these vessels borrows heavily from features of the American Arleigh Burke class and the Japanese Atago class, and shares numerous common components and systems as well, but has a largely original construction and composition. Moreover, with a combat displacement of some 11 000 tons (practically making these vessels Cruisers), the Sejong the Great class destroyers are substantially heavier. The wider hull flare and bulkier superstructure are also very different from the Arleigh Burke class, though the Atago class has a similar shape. Also as with the Arleigh Burke class, the structural components (hull, bulkheads, decks, hatches, etc.) of the Sejong the Great class are almost entirely steel in composition.

There are three vessels in the class; the DDG-991 Sejong the Great, DDG-992 Yulgok Yi I, and DDG-993 Seoae Ryu Seong-ryong. Named after prominent figures of the Joseon Dynasty, they were commissioned in 2008, 2012, and 2014, respectively. The DDG-991 Sejong the Great and DDG-993 Seoae Ryu Seong-ryong were constructed by the Hyundai Heavy Industries (HHI) shipyard in Ulsan, while the DDG-992 Yulgok Yi I was constructed by the Daewoo Shipbuilding & Marine Engineering shipyard in Opko.

Likely owing to the use of only fully-developed technologies and subsystems, the Sejong the Great class destroyers cost only $923 million per-vessel. It is worth noting that his price tag makes these among the most inexpensive Aegis warships ever constructed.

Sensors consist of four AN/SPY-1D(V) phased array radar sets, an AN/SPG-62 fire control radar, a DSQS-21BZ hull mounted sonar, an MTeQ towed array sonar system, and a Sagem Infrared Search & Track (IRST) system. The AN/SPY-1D(V) is capable of being used as a passive radar, and the Sagem IRST is already a passive system, giving the Sejong the Great class immense situational awareness capabilities even at a maximum Emissions Control (EMCON) state, giving it substantial stealth capability.

Propulsion for the Sejong the Great class is four General Electric LM2500 gas turbines driving two shafts with 100 000 shp. Additional power for the ship's systems is provided by three Rolls-Royce AG9140RF gas turbine generators, as the electrical power demand of the class' systems is too great for the LM2500's alternators alone. Enough fuel bunkerage is provided for a 10 186 km (5500 nm) range at 20 knots, and the full speed of the class is approximately 30 knots. Two rudders are fitted, allowing for a relatively small minimum turning circle.

The weapons, sensors, fire controls, propulsion, and other systems are fully-automated, and networked together via the Aegis combat information system; the version currently used in the Sejong the Great class is Baseline 7 Phase 1. This system allows the ship to detect, identify, evaluate, and engage targets with no input from the crew, other than the decision to engage. The system can also display several-thousand contacts, and track and/or engage up to 100 simultaneously. It is also possible for the crew to operate these systems manually, as in earlier guided missile warships, without using the Aegis system. The class also has a Maritime Air Support Operation Centre (MASOC) system, allowing it to coordinate the operations of all friendly tactical aircraft in the vicinity.

The stern is covered by a large helicopter landing pad, and there are two hangars. The total capacity is two helicopters, which can be expanded to three, if an additional helicopter is kept on the landing pad. The maintenance and storage facilities have space and equipment for either the Super Lynx orSH-60 Seahawk.

The missile battery of the Sejong the Great class is exceptional. Not even including the 21-cell RAM launcher, or even the 16 Hyunmoo III anti-ship missiles, they carry an incredible 128 missiles in three different VLC launch cell pads (one forward with 48 cells, one aft with 32 cells, and another 48-cell pad aft). This is a much larger stock of missiles than the 96 cells found on the Arleigh Burke class, though it is still second-place to the Kirov classbattlecruisers (which have the world's largest missile battery, at 352 missiles).

The variety of missiles carried by the Sejong the Great class is staggering as well. These include the RIM-66M-5/SM-2ER Block IV Standard SSM-700K Haeseong with a range of 240 km, the Hyunmoo IIIB land attack cruise missile with a range of 1 000 km, the SSM-700K Haeseong anti-ship missile with a range of 150 km, the Red Shark (also called the K-ASROC) anti-submarine missile with a 18.5 km range, and the RIM-116B RAM surface to air missile with a range of 7.4 km. The K745 Blue Shark torpedo has an effective range of 18.5 km.

Though only two gun systems are carried, these are also quite formidable. The Mk-45 Mod 4 127-mm/62 dual-purpose gun fires 30.7 kg projectiles at a rate of fire of 20 rounds/minute, with a maximum range of 38.4 km, and is capable of engaging land targets, ships, aircraft, and even missiles. The Goalkeeper 30 mm CIWS fires 0.4 kg projectiles at up to 4 200 rounds/minute, with an effective range of 3 km, and can be used against watercraft as well as aircraft and missiles.

The complete ammunition loadout for the Sejong the Great class includes (but is likely not limited to) 680 127 mm shells, 1 190 30 mm shells, 21 RAM missiles, 6 Blue Shark torpedoes, and 16x SSM-700K Hae Sung missiles. The VLS load-out is variable, but the standard configuration consists of 80 SM-2 Standard missiles, 32 Hyunmoo IIIB missiles, and 16 Red Shark missiles. The loadout for the additional munitions carried by the helicopters is unknown.

In 2012, the ROKN formally made a request to the government for three additional Aegis warships, with an eye toward having them in commission by 2027. If these vessels are authorized, it is likely that they will be additional Sejong the Great class Destroyers, or possibly an evolved version of the design.

The manufacturers retain the ability to construct additional Sejong the Great class, but it is unknown as of late 2015 if any other will be ordered by the ROKN, and very unlikely that KDX-III type vessels would be offered for export, as many of its key technologies are classified and/or barred from further proliferation by the US government.

Barring unforeseen developments, the Sejong the Great class destroyers will remain in service until at least the mid-2030s.



Related Vessels



Arleigh Burke class: US Destroyer class, and the design basis of the Sejong the Great class.

Kongo class: Japanese variant of the Arleigh Burke class.

Atago class: Japanese destroyer class, with a similar design to the Sejong the Great class.

Type 052 class: Series of Chinese destroyers, generally considered to be comparable in capability to Aegis warships. They are also similar in layout to the Sejong the Great class.

Type 055 class: New class of Chinese destroyers in development, with a similar design to the Sejong the Great class.



Name
Laid down
Launched
Commissioned
Status
Sejongdaewang (Sejong the Great) (DDG-991)
?
2007
2008
active, in service

Yulgok Yi I (DDG-992)
?
2008
2012
active, in service

Seoae Ryu Seong-ryong (DDG-993)
?
2011
2014
active, in service

Home > Naval Forces > Sejong the Great class
Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the GreatClass
Guided Missile Destroyer

Sejong the Great Class
Guided Missile Destroyer

Sejong the Great Class Images
@Rashid Mahmood @fatman17 @Nihonjin1051

The most powerful surface combatants of the western origins in the world. Only kirov class surpass them......

I greatly admire these ships...........

 

[sEoulman556]

They have several class of Destroyer and Frigate, most of them is heavily armed and have indigenous system on it

South Korean other Destroyer Class

Chunmugang Yi Sun Shin Class aka KDX II, there is order for KDX II flight II equipped with Aegis like system and more indigenous system than their predecessor

Gwanggaeto Class aka KDX I

South Korean right now trying to sell their KDX II variants to Indonesia

Hi madokafc. How are you doing, my lady?

Indonesia could find KDX-IIA to be a suitable flagship for a Indonesian Navy task force since the cost is around 500 to 700 million USD for each KDX-IIA DDG. You might support Indonesia buying KDX-IIA but a fellow Indonesian could argue that its better to use that money to build more Indonesianized Chang Bogo submarines beyond the three that Jakarta has already planned to build or even expand the production quantity of Diponegoro-class corvettes. Whatever Indonesia decides for her naval capability, I am confident that the kimchi people can find a way to help the sambal people fulfill their defence needs.

 

[Nike]

Hi madokafc. How are you doing, my lady?

Indonesia could find KDX-IIA to be a suitable flagship for a Indonesian Navy task force since the cost is around 500 to 700 million USD for each DDG. You might support Indonesia buying KDX-IIA but a fellow Indonesia could argue that its better to use that money to build more Indonesianized Chang Bogo submarines beyond the three that Jakarta has already planned to build or even expand the production quantity of Diponegoro-class corvettes. Whatever Indonesia decides for her naval capability, I am confident that the kimchi people can find a way to help the sambal people fulfill their defence needs.

Hmm, actually the funds for Submarine and Frigate/Destroyer acquisition is different. So far what i am know is, in 2016 the Navy will open procurement process for another batch of Submarine the number will be around for two to three vessels. So far French, Japan, South Korea and Germany has interested to submit their bid.

After PKR class frigate be finished the order likely will be continued. But there is rumor about the Navy proposing a crash programme for large combatant vessels. So far South Korean, Germany, French, Netherland along with Britain is the most aggressive one to submit their proposal for AAW Frigate.

 

[Zarvan]

Hmm, actually the funds for Submarine and Frigate/Destroyer acquisition is different. So far what i am know is, in 2016 the Navy will open procurement process for another batch of Submarine the number will be around for two to three vessels. So far French, Japan, South Korea and Germany has interested to submit their bid.

After PKR class frigate be finished the order likely will be continued. But there is rumor about the Navy proposing a crash programme for large combatant vessels. So far South Korean, Germany, French, Netherland along with Britain is the most aggressive one to submit their proposal for AAW Frigate.

Indonesia should go for 4 to 6 Type 45 Destroyers from UK

 

[Blue Marlin]

It's a great warship indeed. Jeez.......to think how far the Koreans have come, just 5 decades ago they were poorer than sub-Saharan countries like Ivory coast/Cameroon/Gabon etc. Now look at where they are today. Shows that with hard work,dedication and visionary leaders a country can achieve miracles, instead of sitting down their lazy *** and blaming foreign powers for all their ills like some people in many developing countries do.
Anyway, good one Korea, hopefully the paranoid communist north will wake up from its delusional commie dreams and embrace globalization/capitalism/open up for their own good/well being.

thank samsung. heres a fact you did not know. samsung accounts for 17% of south korea's entire gdp

hyundai and daewoo are other notible contributions

 

[Nike]

Indonesia should go for 4 to 6 Type 45 Destroyers from UK

the price will killing the Navy budget

 

[Beast]

The most powerful surface combatants of the western origins in the world. Only kirov class surpass them......

I greatly admire these ships...........

Kirov in fact has outdated system, besides its large displacement and large number of oversize missile. I question Kirov effectiveness in nowadays modern naval warfare.

 

[Baybars Han]

I can't wait to see our TF-2000s in service and in a naval drill with this great ship of brotherly country SK.