S. Korea's SLBM program shows progress through consecutive launch

Lim Chang-won Reporter() | Posted : April 22, 2022, 14:02 | Updated : April 22, 2022, 14:02

[Yonhap News Photo]

SEOUL -- South Korea's infant submarine-launched ballistic missile program showed considerable progress through the consecutive release of two rounds in an unheralded test launch that came seven months after the first open launch from a 3,000-ton attack submarine in the presence of President Moon Jae-in.    

The South's defense ministry belatedly confirmed that two submarine-launched ballistic missiles (SLBMs) were fired consecutively in 20 seconds from South Korea's first 3,000-ton submarine named "Dosan Ahn Chang-ho" off the west coast on April 18 in a test that revealed performance improvement before their operational deployment. 

The missiles flew some 400 kilometers (248 miles) and hit preset targets, the ministry said. The test was to verify the capability of SLBMs in a real-world environment, but their maximum flight range and specifications were kept under wraps. South Korea has conducted missile tests at a limited range to avoid provoking neighboring countries,

Dosan Anchang-ho carrying six SLBM vertical launchers was used for the first SLMB test launch in September 2021. The 83.5-meter-long  submarine featuring advanced noise reduction technologies is to be deployed for combat missions in August. It can operate underwater for 20 days without surfacing by using an air-independent propulsion system.

South Korea has a three-stage military program to develop a fleet of modern conventional submarines. Through the first phase, nine 1,200-ton diesel-electric submarines have been built with technical help from Germany’s Howaldtswerke-Deutsche Werft (HDW). The second phase called for the construction of six 1,800-ton vessels. Through the third phase, nine submarines of 3,000 tons or more are to be built.

On September 28 in 2021, South Korea launched its third 3,000-ton submarine that can sail at a maximum speed of 37 km per hour with about 50 people aboard. Construction of the first 3,600-ton submarine capable of firing up to ten SLBMs began in August 2021. The first 3,600-ton submarine armed with torpedos, guided missiles and sea mines is set to be deployed in 2027. Three 3,600-ton submarines and three 4,000-ton submarines would be built to complete the three-stage submarine program.

The development of ballistic missile submarines and SLBMs in South Korea is under U.S. scrutiny to control the rapid development of strategic weapons that could pose a security threat to neighboring countries in Asia. However, Washing faces increasing difficulties checking Seoul's irresistible desire to build up its independent military power.

In response to Pyongyang's persistent push for the development of nuclear weapons and long-range ballistic missiles, the South's defense ministry has maintained a task force related to a nuclear-powered ballistic missile submarine which has been of great strategic importance as it can hide from reconnaissance. 

Wary of nuclear proliferation in Northeast Asia, Washington is apparently unhappy with the construction of large ballistic missile submarines with nuclear propulsion in South Korea because SLBMs are related to intercontinental ballistic missiles (ICBMs).

The deployment of highly accurate missiles on ultra-quiet submarines allows an attacker to sneak up close to the enemy coast for a decapitation strike. Nuclear propulsion frees submarines from the need to surface frequently. The large amount of power generated by a nuclear reactor allows nuclear submarines to operate at high speed for long periods.  
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