Republic of Korea Navy – The Defense Post

Oct- 2025 -

23 October

The firrst Dosan Ahn Chang-ho-class (KSS-III) Batch-II attack submarine. the ROKS Jang Yeong-sil (SS-087).

S. Korea Rolls Out First KSS-III Batch-II Attack Submarine

Hanwha Ocean has launched the Republic of Korea Navy’s first Dosan Ahn Chang-ho-class Batch-II attack submarine, marking a milestone in the country’s push to build and operate its own advanced undersea fleet.

23 October

Asia Pacific

Republic of Korea navy Chungmugong Yi Sun-sin-class destroyer ROKS Chungmugong Yi Sun-sin (DDH 975) sails during the at-sea phase of Exercise Rim of the Pacific (RIMPAC) 2024. Twenty-nine nations, 40 surface ships, three submarines, 14 national land forces, more than 150 aircraft and 25,000 personnel are participating in RIMPAC in and around the Hawaiian Islands, June 27 to Aug. 1. The world’s largest international maritime exercise, RIMPAC provides a unique training opportunity while fostering and sustaining cooperative relationships among participants critical to ensuring the safety of sea lanes and security on the world’s oceans. RIMPAC 2024 is the 29th exercise in the series that began in 1971. (U.S. Navy photo by Mass Communication Specialist 2nd Class Terrin Hartman)

Rojoef Manuel

South Korea is Building an AI ‘Crewmate’ for Its Warships

The system is being built around the company’s in-house AI engine known as Runway, along with a lightweight setup that allows large AI models to function on platforms with low processing capacity.

Sep- 2025 -

22 September

Asia Pacific

HD HII launches the second King Jeongjo-class 8,200-ton destroyer, Dasan Jeong Yak-yong, for the ROK Navy

Christine Casimiro

HD HHI Launches South Korean Navy’s Second 8,200-Ton Aegis Destroyer

HD Hyundai Heavy Industries has launched the second King Jeongjo-class 8,200-ton destroyer for the Republic of Korea Navy.

Feb- 2025 -

5 February

Asia Pacific

Rendering of the Republic of Korea Navy's future Korean Next-Generation Destroyer (KDDX)

Rojoef Manuel

Hanwha, Hyundai to Compete for South Korean KDDX Destroyer Program Contract

South Korea has selected Hanwha Ocean and HD Hyundai Heavy Industries to compete for the primary contractor role on the Korean Next-Generation Destroyer program contract.

Dec- 2024 -

2 December

Asia Pacific