The new 3,600-ton vessel represents a technological and strategic leap in South Korea’s submarine capabilities
The Republic of Korea Navy has officially launched the Jang Yeong-sil (SS-087), the first submarine of the Changbogo-III Batch-II class, during a ceremony held on October 22 at the Hanwha Ocean shipyard in Geoje.
The new submarine, entirely designed and built with domestic technology, is expected to be delivered to the fleet by the end of 2027. Weighing 3,600 tons and measuring 89 meters in length, the Jang Yeong-sil represents the latest advancement in South Korea’s submarine modernization program, aimed at strengthening the country’s strategic deterrence capabilities.
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According to the Navy, the project was developed to serve as a core asset in South Korea’s maritime defense, capable of addressing various threats around the peninsula and beyond. The vessel is named after Jang Yeong-sil, a renowned inventor and engineer from the Joseon Dynasty, symbolizing the combination of scientific heritage and technological innovation.
During the ceremony, Admiral Kang Dong-gil, Chief of Naval Operations, emphasized the strategic importance of the launch:
“This launch marks a leap forward in our pursuit of an intelligent and elite naval force. I am confident that the Jang Yeong-sil, built with our own technology, will play a crucial role in defending Korea’s maritime sovereignty.”
The new Batch-II generation introduces significant improvements over the first phase of the Changbogo-III (also known as KSS-III) program, including more advanced sensors, greater endurance, and enhanced stealth performance. These features enable the vessel to carry out long-duration independent missions, including the launch of land-attack cruise missiles.
After the launch, the submarine will undergo a series of tests and evaluations before being officially commissioned into operational service, expected by the end of 2027.
Hanwha Ocean (formerly Daewoo Shipbuilding & Marine Engineering – DSME) is the main builder of the KSS-III program and plays a key role in South Korea’s transition from importer to manufacturer—and potential exporter—of advanced submarines.
In a statement, the Navy reaffirmed its commitment to integrating cutting-edge technology into its defense structure:
“We will continue to strengthen our naval power based on advanced science and technology, ensuring Korea’s maritime sovereignty with confidence.”
The development of the Changbogo-III Batch-II consolidates South Korea’s position as one of the global leaders in naval engineering and submarine defense, while expanding its potential to export advanced naval platforms to countries interested in South Korean technology.
Source and images: X @ROKNAVY_. This content was created with the help of AI and reviewed by the editorial team.
